Edelbrock aluminum heads, valve cover leaks
#2652299
05/05/19 03:37 PM
05/05/19 03:37 PM
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Joined: Jul 2013
Posts: 1,272 Northern Calyfornua
Sxrxrnr
OP
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OP
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Joined: Jul 2013
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Northern Calyfornua
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Several years ago I replaced the stock iron heads on my 512 stoker with Edelbrock aluminum performance heads. The main reason that I had done this was that I had a horrific plug fouling problem and after trying every trick that I could uncover finally in spite advice from many, decided to swap out the heads as I was convinced that it was a sealing problem between the intake ports on the iron heads and my six pack intake.
I(we) had pulled the intake 3 times, closely examining the turkey pan metal gasket looking for any signs of oil being able to get into the intake ports from the lifter chamber to no success. Also doing the trick to ensure that intake had no gaps in contact with heads,,,as per the most obvious cause of perhaps milled heads with no corresponding planing of intake. All look ok each time.
Nevertheless replaced heads with Edelbrocks,,,ergo no more plug fouling and engine performance was outstanding.
However, ever since this swap, I have been plagued with oil seepage between my Mopar Performance aluminum valve covers and the heads,,,,only at the rear third of each cover at header side.
I have tried 3 or 4 different gasket sets, from cork to Moroso to Mr. Gasket. Finally installed a set of Superperformance gaskets,,,following instructions to a T,,,using silicone on valve cover side, installing but not tightening too much, waiting 12 hours and cinching down,,,although on aluminum heads being aware that if torqued to iron heads specs, I could pull the threads.
So being me, I assumed all would be well and off I go Saturday morning for a Mopar Cruise event,,,,and not to long I was aware of the familiar odor of hot oil cooking on headers.
So now I am saying, so much for Superperformance gaskets too. But this time I did a very close inspection postmortem.
These photos say it all,,,,note the head imprint on the gaskets at the bottom, header edge verses the intake edge. Of course this is where you need the most sealing as this is where the oil puddles.
It appears my problem is not my valve covers, nor my gaskets,,,,but an extremely poor made is on God knows where job of machining an adequately wide platform on the contact to valve cover edge.
2 photos are of radiator end of heads,,,all is well, 2 are of firewall end,,,very narrow edge,,,where leaking/seeping occurs.
Any advice as to where I go from here? I do intend to Edelbrock to hear what they have to say.
Actually the only reasonable relief I found in leaking was to take the least expensive O’Rielly Felpro gaskets and slather them with black silicone. Not the best solution or even a decent one for ease of maintenance. Pulling and replacing my heads does no appeal,,,but I suspect that is where I am heading.
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: topside]
#2652319
05/05/19 04:41 PM
05/05/19 04:41 PM
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Joined: Jul 2013
Posts: 1,272 Northern Calyfornua
Sxrxrnr
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Interesting that your comment regarding a decent seal with a narrow platform,,,,matches my comment that my best outcome was with cork,,albeit using a load of silicone.
Yes I have assured that hold down bolts are not bottoming out before gasket compression has very well occurred. I remember very well the experience that I had several years ago with rear main seals. I had purchased a brand new set of pan bolts from Mr. Gasket,,,installed them, ended up with a massive leak at rear main. Started engine flywheel cover removed. Had a look see up the flywheel, looked like rear main leak,,,,closer examination was that rear of pan was cause of leak.
Apparently Mr. Gasket did not know,,,,nor did hardly anyone else for that matter,,,that the 2 pan bolts that go into rear main retainer, are per Mopar specs must be shorter than the remaining 18? pan bolts. Mr. Gasket packages all bolts at exact same length. Therefore rear main two bottom out.
I do have more than adequate clearance between Harland Sharp rockers and valve cover.
Imprints on gaskets at the head side of them show substantial crush all about the valve cover,,,just very narrow at the rear of each.
Cannot understand why radiator end of heads has a valve cover gasket platform likely twice as wide as is firewall end. Would Edelbrock does this deliberately,,,would seem odd as the rear of the head is where the majority of pooling is likely.
Has anyone a set of these heads not mounted, that they can have a look see if the rear platform is much narrower than the front platform as I see on mine?
Do any of you run your valve covers with no gaskets,,,only using a bead of silicone? Likely this would make them very difficult,,,,and time consuming whenever valve covers must be removed.
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: hemi-itis]
#2652324
05/05/19 05:01 PM
05/05/19 05:01 PM
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Joined: Jul 2013
Posts: 1,272 Northern Calyfornua
Sxrxrnr
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Yes I have. Even with iron heads, I had a very slight seepage at rear of driver side. A dab of silicone there always took care of it. These covers are not military grade machined so this cover was prone to seep.
I did dump a bunch of flour on a sheet of glass, sat each valve cover on it. There was contact all around each cover,,,,by examining imprint in flour...however the imprint was a bit less defined at rear of one of them.
However a gasket should take this up,,,,and in fact my gaskets are again imprinted very well when examined upon removal of valve cover,,,,,just very narrow at leak points.
But as I look at crush imprint it should be sufficient,,,,but where head platform is narrow,,,it almost looks like it was dremel tool ground down where it is so narrow,,,looks like tooling marks here,,,almost as if machining a bit more clearances for base of valve spring. Which by the way triggers a thought. I had a machine shop setup heads and also install ‘beehive’. Wonder if they may have done a bit of clearance fine tuning. Each rear spring is pretty close to pocket at edge of head.
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: Sxrxrnr]
#2652365
05/05/19 07:06 PM
05/05/19 07:06 PM
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Joined: Jan 2008
Posts: 2,363 Cotati, CA
Dave Hall
top fuel
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Cannot understand why radiator end of heads has a valve cover gasket platform likely twice as wide as is firewall end. Would Edelbrock does this deliberately,,,would seem odd as the rear of the head is where the majority of pooling is likely. Heads are bisexual. I have Indy covers (no logo) on a set of Edelbrock Performer RPM heads. The only gasket they didn't like was the blue, rubber, Moroso one with the steel shim. I tighten them "palming" a 1/4" drive ratchet moving inside out like a head or an intake. I go until they stop turning going over all the nuts about three times. Studs are the way to go if you have room to lift them off the extra inch or so. Prepare to grind some aluminum off at the distributor.
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: Dave Hall]
#2652445
05/06/19 01:28 AM
05/06/19 01:28 AM
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Joined: Jul 2013
Posts: 1,272 Northern Calyfornua
Sxrxrnr
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When viewing photos of firewall end and the radiator end of the 2 head photos, you will note that the firewall end exhaust valve spring is crowded very close to edge of head, whereas the radiator end is much further from the edge. Perhaps an optical illusion from photo, perhaps rocker arm placement over valve spring is giving this appearance of closer at the back.
Also the ‘lip’ where the gasket sits is much wider on the radiator end than the firewall end.
I am not questioning your assessment that the heads are Bi-sexual(having never considered the thought that I could flip heads from side to side at will), but if so and oil tends to pool and overflow the ridge banks st the rear more than at the front,,,,,would this knowledge be a worthwhile consideration when installing heads to lessen possible oil seepage or leaking?
This is somewhat above my pay grade as a somewhat advanced rookie as a engine technician, so am asking as a point of curiosity.
As my seepage is only near the firewall end of each head, as obviously from oil tracking streams on the head,,,for now as an experiment, I have slathered a dose of black Permatex silicone on the head side of each Superperformance gasket at firewall end,,,,about 8 Inchs from the end of the head.
I do have an inch pounds torqometer meter snapon torque wrench,,,picked up many years ago on EBay.
Anyone know proper inch pound torque for Mopar performance covers on Eddy aluminum heads. I would hate to pull the threads out of one of the bolts.
Last edited by Sxrxrnr; 05/06/19 01:33 AM. Reason: Typo
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: sgcuda]
#2652475
05/06/19 08:24 AM
05/06/19 08:24 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Show a pic of the valve cover.. I want to see if they have a lip on them.. I had a issue with the covers leaking.. it was due to the joint at the intake and heads.. if you notice you have very little difference between the intake and head... I had to clearance that area so the covers could set lower.. it was very little to make them clear and the oil ran back to the corner so I thought that was the leak.. I had to clearance the area all alone the intake.. if you have alum covers they could be touching the intake and not setting down all the way EDIT looking at your covers you do have a lip.. I think that lip isnt letting the cover to set all the way down at the intake I ended up milling that lip off.. all the way around.. mine was on a set of W-9 covers
Last edited by MR_P_BODY; 05/06/19 08:38 AM.
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: MR_P_BODY]
#2652479
05/06/19 08:33 AM
05/06/19 08:33 AM
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Joined: Oct 2007
Posts: 3,978 Hilltown Pa
1967dartgt
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master
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Hilltown Pa
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Looks like its the junk mopar valve cover.
Brett Miller W9 cnc'd heads STR Chassis fabraction
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: 1967dartgt]
#2652490
05/06/19 09:04 AM
05/06/19 09:04 AM
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Joined: Jan 2003
Posts: 13,357 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
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Looks like its the junk mopar valve cover. I'd try another pair of covers.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: an8sec70cuda]
#2652506
05/06/19 09:52 AM
05/06/19 09:52 AM
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Joined: Jan 2003
Posts: 14,492 So. Burlington, Vt.
fast68plymouth
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There is no “front” or “rear” with the heads.
If you swapped the heads side for side, what was the front would become the rear.
I built a 446 for a local guy in 2005. Used the RPM heads and MP covers......FelPro 1612 gaskets..... no leaks in 14 years. It’s s solid cam, so regularly has the covers off.
You basically need a new set of gaskets each time you pull the covers.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: an8sec70cuda]
#2652507
05/06/19 09:53 AM
05/06/19 09:53 AM
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Joined: Jan 2003
Posts: 17,841 S.E. Michigan
ZIPPY
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I Live Here
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Yeah, the valve covers look great but they really don't fit the head perfectly, they are too big. I have the same heads you have. I would recommend Indy valve covers to you. The holes usually need to be opened up slightly in those covers to fit properly (Hey, it's Indy). My second choice in a cast valve cover is the old mickey thompson/holley type but even those are a little wider than they need to be....but they have worked great for me. The next ones I want to buy and check out are these Summit house brand, which to me looks very close to Indy products but nicer finished, and also less expensive. https://www.summitracing.com/parts/sum-440350/overview/
Rich H.
Esse Quam Videri
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: an8sec70cuda]
#2652515
05/06/19 10:07 AM
05/06/19 10:07 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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Romeo MI
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I really like my cast MP valve covers.. I only had that one issue with them but when I got that fixed up they have never leaked EDIT the wider the cover is the more you can have issues with them running into the intake and not letting them sit down the way they should
Last edited by MR_P_BODY; 05/06/19 10:12 AM.
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: MR_P_BODY]
#2652529
05/06/19 10:50 AM
05/06/19 10:50 AM
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Joined: Feb 2005
Posts: 20,160 PA.
pittsburghracer
"Little"John
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"Little"John
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I bought a couple sets of intake spacers for my smalls blocks because with the raised runners of some of the better flowing intake manifolds my valve cover were laying on the intake instead of the valve cover rails and leaking badly. I really like these spacers but they need test fitted and some pushrod clearance grinding. Also some of these valve cover have the mounting bolt angles off small so that needs matched to the spacers. I black silicone these right to the head and then lay my gaskets and valve covers on. http://www.medicemfg.com/products_get.php?c=Valve%20Cover%20Spacers%20-%20Mopar
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: pittsburghracer]
#2652755
05/06/19 09:02 PM
05/06/19 09:02 PM
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Joined: Jan 2003
Posts: 5,443 Indiana
YO7_A66
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master
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Indiana
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My stock 340 valve covers leaked on both my stock heads and then again on my Sidewinder heads at the rear where the oil puddles. So I did what Pittsburghracer did and ordered a set of machined spacers from Medice. This raised the valve cover up farther away from the puddle and the machined surfaces helped seal the leak.
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: Sxrxrnr]
#2652804
05/06/19 11:12 PM
05/06/19 11:12 PM
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Joined: Nov 2013
Posts: 695 Southern Alberta
Uberpube
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As my seepage is only near the firewall end of each head, as obviously from oil tracking streams on the head,,,for now as an experiment, I have slathered a dose of black Permatex silicone on the head side of each Superperformance gasket at firewall end,,,,about 8 Inchs from the end of the head.
I do have an inch pounds torqometer meter snapon torque wrench,,,picked up many years ago on EBay.
Maybe try some threebond, you can buy it from a mazda dealer R2Y110431. Best sealant i've ever seen, wipe the surfaces down with lacquer thinner first to get the oil off. Its the only thing that will seal a rotary oil pan, and you need a mallet to break it free later on.
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: YO7_A66]
#2653039
05/07/19 03:31 PM
05/07/19 03:31 PM
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Joined: Jul 2013
Posts: 1,272 Northern Calyfornua
Sxrxrnr
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Although I do not have the intake caused leakage,,,leaks are on bottom side of covers,,,the spacer idea is intriguing as would raise cover up higher so lessen tendency for pooled oil to leak.
However it seem you would need 2 gasket sets,,,and would the spacer seal against head any better than valve cover currently does.
I do like the appearance of the Mopar Performance covers,,,,looks a bit more Mopar stock than some of the other perhaps better machined covers.
I currently have slathered permetex black about as I suggested in previous post,,,now setting a couple of days, time to take it out for a drive.
I also am planning to call Edelbrock to find what they have to say on this.
Rear main and valve cover leaks go with the game I guess,,,finally got the rear main taking care of,,,knock on wood.
Thank you all for your suggestions.
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: Sxrxrnr]
#2654330
05/11/19 01:37 PM
05/11/19 01:37 PM
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Joined: Jul 2013
Posts: 1,272 Northern Calyfornua
Sxrxrnr
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As noted in previous post, I determined the places that my covers were leaking,,,,oddly with the superperformance gaskets on head side of gasket whereas other brands leaked between valve cover and gasket,,,,not using sealer except a very small amount at bottom rear of valve cover on valve cover side of gasket.
I now have throughly cleaned the head ‘ridge’ with carb cleaner and from rear of head going forward about 10 inches, I ran a bead of permetex black silicone. I hate using this stuff except where necessary because of the bear of removing pans, valve covers etc.
Nevertheless for now, no leaks. I do agree that my Mopar Performance valve covers are likely a culprit here, however also believe that Edelbrock should look at their valve gasket ‘ridge’. It maybe adequate for the front of the head for sealing,,,,but because of a greater tendency to ‘pool’ at the rear the ‘ridge’ needs a bit of refinement. Yes I do now understand that heads are switchable from side to side,,,so Edelbrock should refine both ends. Photos of gasket imprints show very well how narrow they are where as the ‘ridge’ curves upward and this is pooling caused leaks in my case occur.
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: Sxrxrnr]
#2654347
05/11/19 02:14 PM
05/11/19 02:14 PM
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Joined: Jan 2003
Posts: 4,270 Morrow, OH
markz528
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master
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Morrow, OH
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On more than one set of cast aluminum covers I had to mill the sealing surface. I don't see this as an issue in your case, but in one case I had to take 0.080" off the boss where the bolt goes through because it was hitting the head there and would never properly compress the sealing surface. I found this by putting a piece of paper between the gasket and head and it would slip right out.
I have had the best luck milling the valve cover sealing surfaces flat and gluing a rubber gasket to the cover. Degrease the head sealing surface and install. Usually have zero leaks with this approach.
67 Coronet 500 9.610 @ 139.20 mph 67 Coronet 500 (street car) 14.82 @ 94 mph 69 GTX (clone) - build in progress......
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: markz528]
#2654357
05/11/19 02:50 PM
05/11/19 02:50 PM
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Joined: Jan 2003
Posts: 14,492 So. Burlington, Vt.
fast68plymouth
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I Live Here
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So. Burlington, Vt.
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I realize this is just stating the obvious........ but........ there are thousands of these heads in service....... for well over a decade...... where the owners are enjoying leak free operation.
As opposed to something like a MP 518-M MW head...... where I’ve seen the valve cover rail vary by over .125” in height from one end of the head to about the mid-way point....... then back down again to the other end.
Have fun trying to get that to seal.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: Sxrxrnr]
#2654532
05/12/19 10:41 AM
05/12/19 10:41 AM
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Joined: Jun 2014
Posts: 3,163 Md.
carnut68
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Md.
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Try putting the Permatex on the gasket first by rubbing it in with your fingers .Don't use a lot just enough to make the gasket tacky. Works great for my M/T cast aluminum covers. Studs in the heads work best, 3 pacs for a sbc should give you enough and their cheaper. Then let it set set up for a few hours.
America First!
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: carnut68]
#2656111
05/16/19 08:34 PM
05/16/19 08:34 PM
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Joined: Jul 2013
Posts: 1,272 Northern Calyfornua
Sxrxrnr
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Since earlier post where I slathered a bit of black Permatex on back few inches of head rail head rail, between Superperformance gasket and head,,,leaks on both heads appear gone. Now I can start removing baked on engine oil of ceramic coating of TTI header tubes under the car. Not as bad as when with rear main seal issues, but still a time consuming cooly labor job. What I found worked best was a toothbrush like brass brush using Mother’s metal polish. Tried several other well known brands,,,but this was the quickest. Header ceramic coating did not appear damaged when completed. I had thought on Easy Off Oven cleaner. Has anyone tried this. In ovens you are to crank up the oven to hot to get it to work. Has anyone tried this? Incidentally for you Calyfornua SF Bay Area Members. Goodguy’s June event is coming soon to Pleasanton June 1 and 2. Goodguys has given us one of their 3 main buildings to have 25 very unique and high quality early Mopar muscle cars that we have invited as an inside Mopar only show within their event. Chevys and Fords normally dominate these events,,,a couple of us decided it was Mopar time. Any of you attending, stop by for a look-see. https://www.good-guys.com/sgt
Last edited by Sxrxrnr; 05/16/19 08:36 PM.
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: rck850]
#2657603
05/21/19 03:19 PM
05/21/19 03:19 PM
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Joined: Jan 2010
Posts: 1,442 NW Chicago suburban area
Mopar Mitch
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NW Chicago suburban area
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There is no gasket better than its installation. First and above all, flat surfaces required, along with cleanliness. Rigid castings are better than stamped steel pieces. Then, proper torque... and never over-torque, especially with rubber type gaskets as rubber does not compress.. it distorts... too much squeeze and it splits. Cork-rubber and fiber type gaskets will compress. Also, never apply or spread RTV silicone all across a rubber gasket... it will act as a lubricant and welcome the gasket to split or slide out of position; rubber gaskets always best installed DRY.
Read the instructions that should (hopefully) be included within manufacturers gasket sets.
Mopar Mitch
"Road racers and autocrossers go in deeper and come out harder!"... and rain never stops us from having fun with our cars... in fact, it makes us better drivers!
Check out MOPAR ACTION MAGAZINE, August 2006 issue for feature article and specs on my autocross T/A!
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: fast68plymouth]
#2658004
05/22/19 01:21 PM
05/22/19 01:21 PM
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Joined: Aug 2003
Posts: 3,095 Idaho
Runner
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master
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Idaho
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There is no “front” or “rear” with the heads.
If you swapped the heads side for side, what was the front would become the rear.
I built a 446 for a local guy in 2005. Used the RPM heads and MP covers......FelPro 1612 gaskets..... no leaks in 14 years. It’s s solid cam, so regularly has the covers off.
You basically need a new set of gaskets each time you pull the covers.
I'm not sure what the difference is between the 1612 gasket and the VS50145R? i've had good luck with the VS50145R on the edelbrock heads, they are both listed as rubber coated fiber. im also a big fan of ARP valve cover studs and their 12 point nuts. i lay them on the head dry letting the studs hold the gasket in place, then i set the cover on and run my fingers around the outer edge of the cover to tuck the gasket into the lip on the cover then i snug the nuts down a little at a time starting with the bottom. like fast says, its a 1 time use with the gaskets, and sometimes you really have to pop the cover to get it to break free when you are removing it but the dont leak this way. i change the oil and check the lash every fall so its a yearly gasket replacement. i do this on both of the cars we have with edelbrock heads. i tried the cometic rubber gaskets and they leaked really bad with these covers. i like the look of the mp cast covers but they really are a crappy piece for what they cost.
Last edited by Runner; 05/22/19 01:22 PM.
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: Runner]
#2658810
05/24/19 03:43 PM
05/24/19 03:43 PM
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Joined: Jan 2010
Posts: 1,442 NW Chicago suburban area
Mopar Mitch
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Felp-Performance #1612 gasket and the Fel-Pro VS50145R?... exact same gasket.. different packaging. These hi-temp gaskets are rubber-coated fiber and designed for extreme hi-temp OE applications where the cast iron manifolds rise up and very close to the valve covers... intended for ... and tested on emergency/police/fire/ambulances, city taxi-cabs, trucks, heavy-duty industrial vehicles, etc. These are best hi-temp gaskets on the market... period... and intended for longevity. Just remember.. flatness and proper clamp load! They are not as compressible or forgiving to distortion as cork-rubber... also available for Mopar small-block LA covers.
Last edited by Mopar Mitch; 05/24/19 03:44 PM.
Mopar Mitch
"Road racers and autocrossers go in deeper and come out harder!"... and rain never stops us from having fun with our cars... in fact, it makes us better drivers!
Check out MOPAR ACTION MAGAZINE, August 2006 issue for feature article and specs on my autocross T/A!
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: Mopar Mitch]
#2659630
05/27/19 01:26 PM
05/27/19 01:26 PM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
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master
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Utah and Alaska
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I would put the valve cover on a piece of glass and look at how it sits...that is what I do with it to start, that will tell you if it is flat and how the sealing surfaces look. I would start there, if it is in question, use some aluminum oxide paper to sand it down flat...using the glass to hold it flat.
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: Mopar Mitch]
#2659646
05/27/19 01:59 PM
05/27/19 01:59 PM
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Joined: Jul 2013
Posts: 1,272 Northern Calyfornua
Sxrxrnr
OP
pro stock
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OP
pro stock
Joined: Jul 2013
Posts: 1,272
Northern Calyfornua
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Bit the bullet and purchased a replacement set of Mopar Performance valve covers,,,I prefer the look. Also a pair of Felpro 1612 gaskets, as they appear a crowd favorite on the forum at a very reasonable cost compared to some others. I have tried more expensive gaskets from 5 different vendors to not much success. Also purchased silicone black in the can that lays a bead by merely pushing on the tip of the can, similar to using a spray paint. Really impressed at how much simpler and more accurate verses out of a tube. Summit sells their brand name version that appears same as Permatex at about 1/2 the cost. https://www.autozone.com/sealants-g...que-rtv-silicone-gasket-maker/388828_0_0Just installed valve covers this morning,,,will let sit until tomorrow to allow limited areas where I used silicone,,,only at bottom rear of prior covers where I was experiencing leak issues. Hopefully new covers and gaskets, all will be well.
Last edited by Sxrxrnr; 05/27/19 02:27 PM. Reason: Typo
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: Sxrxrnr]
#2665247
06/12/19 06:20 PM
06/12/19 06:20 PM
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Joined: Jul 2013
Posts: 1,272 Northern Calyfornua
Sxrxrnr
OP
pro stock
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OP
pro stock
Joined: Jul 2013
Posts: 1,272
Northern Calyfornua
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Installed replacement Moparts aluminum valve covers and using Felpro 1612 gaskets as suggested by a member, and a slight amount of permatex black Summit sealer only on rear half of valve cover side of gasket from pressurized container,,,all is well. I have always used 40 pound fish line threaded thru boot holes to hold gaskets in position when mounting. Clean up of old gasket sealer has never been a something I enjoy.
2 weeks driving later, including trip to Goodguys June event for indoor Mopar show, not a drop of oil on the floor upon leaving event.
This after numerous attempts over the years, using gaskets,,,some very high priced,,,from a variety of manufacturers with no complete success. Some reason undetermined, the original Moparts valve covers in spite of multiple attempts just would not seal totally.
ARP studs that I ordered from Summit along with other parts were and still are back ordered. Bolts after a couple additional 40 inch pound torque downs as per Cal’s recommendation are doing fine.
Thanks to all of you who chimed in.
Last edited by Sxrxrnr; 06/12/19 06:25 PM.
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Re: Edelbrock aluminum heads, valve cover leaks
[Re: Sxrxrnr]
#2688013
08/15/19 12:36 PM
08/15/19 12:36 PM
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Joined: Jan 2005
Posts: 4,405 Michigan
MarkZ
Worthy
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Worthy
Joined: Jan 2005
Posts: 4,405
Michigan
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Recently just had to deal with this. I noticed the lip on the covers interfered with Felpro 1612 gaskets ever so slightly. It was enough to off-center the bottom bolt holes on the sides and sometimes it would pop out and not sit flat.. Ground off the lip on both sides in the problem areas and used Hylomar per the recommendation from Mancini and it sealed right up.
Last edited by MarkM; 08/15/19 12:37 PM.
1987 Fifth Avenue - 512/518/D60
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