Thoughts on cyl head repair
#2498930
05/22/18 07:43 AM
05/22/18 07:43 AM
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Joined: Mar 2009
Posts: 2,463 Sydney,Australia
tex013
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Just interested in thoughts ideas about a cylinder head repair . This is on my CNC source heads . Been fine for about 6 years , ran awesome on saturday At work monday noticed a bit more moisture in valve covers , not unusual in winter with no pvc valve , normally gone after a weekend racing . Radiator down about a quart Cleaned 1 cover , rechecked today . Worse . Pulled heads to checkover . 2 cracks/splits in 2 different intake ports in 1 head . These are right through to headbolt passage , aluminium looks very thin , about 1/2" long. Appears these may also intersect water ? Is this simply drill and drive in a sleeve/tube situation ? Or are these possibly done and beyond repair . The crack is quite down the port
Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: Thoughts on cyl head repair
[Re: lewtot184]
#2498940
05/22/18 08:58 AM
05/22/18 08:58 AM
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Joined: Mar 2009
Posts: 2,463 Sydney,Australia
tex013
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nice thing about alum is it can be welded up; if the welder can get to it. truth is there's probably other trouble spots that may show up. if it's possible i'd think about moving on to something else. That is a big concern for sure Thanks Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: Thoughts on cyl head repair
[Re: tex013]
#2498947
05/22/18 09:29 AM
05/22/18 09:29 AM
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crabman173
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crabman173
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Source heads are made from a very brittle and IMO low quality alloy--would be a waste of time to try and weld I think--get some Sidewinders or Trick Flows and keep on keeping on You may also find upon inspection that the guides are worn out--that metal looks like bronze but does not hold up well either There have been folks that cracked those heads when tightening them down on the block
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Re: Thoughts on cyl head repair
[Re: tex013]
#2499011
05/22/18 12:33 PM
05/22/18 12:33 PM
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Joined: Jan 2003
Posts: 14,496 So. Burlington, Vt.
fast68plymouth
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Have them pressure tested to see for sure where the water is coming from. The head bolt holes "shouldn't" intersect water, but if they do...... Sealing that up is likely going to be a challenge.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Thoughts on cyl head repair
[Re: tex013]
#2499040
05/22/18 01:34 PM
05/22/18 01:34 PM
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Joined: Jan 2012
Posts: 2,645 Stuttgart, Arkansas
rickseeman
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I would buy some Trick Flows and sell those to someone that wants to go thru the hassle of fixing them.
2011 Drag Pak Challenger
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Re: Thoughts on cyl head repair
[Re: tex013]
#2499071
05/22/18 02:44 PM
05/22/18 02:44 PM
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Joined: Jun 2005
Posts: 6,257 gulfport, ms, west mi
rowin4
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O'Rielly's , probably others sell some block crack fix stuff , it a bright green bottle, guaranteed to stop leaks. Might try that first. A friend of mine used it on a BB Chevy intake gasket water leak . Surprised me that it worked.
it's ok to butt heads, just don't do it with a butthead
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Re: Thoughts on cyl head repair
[Re: tex013]
#2499105
05/22/18 03:50 PM
05/22/18 03:50 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
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Mr. Porter nailed it. You need to pressure test the heads and really see where the leak is. You can tube the bolt holes. But that won't stop your leak. Unless you have some weird deal where a crack in a water jacket is leading to that crack in the bolt hole.
Usually, that stuff only happens to me, but it is possible you got a bit of the green weenie.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Thoughts on cyl head repair
[Re: tex013]
#2499185
05/22/18 07:47 PM
05/22/18 07:47 PM
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Joined: Mar 2009
Posts: 2,463 Sydney,Australia
tex013
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thanks guys . I will try and get them pressure tested next week . Looks like TF270 are on the horizon . At least with the TF I can reuse my rocker gear so its just heads , bolts , pushrods
Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: Thoughts on cyl head repair
[Re: tex013]
#2499239
05/22/18 10:39 PM
05/22/18 10:39 PM
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Joined: Mar 2009
Posts: 2,463 Sydney,Australia
tex013
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Ok , just to go down the road a bit . Which head gasket is good for the Tflow head ? Felpro 1009 , 8519 or buy the Tf cometic which doesn't have a 4.410 bore ? I understand the Felpro max wedge intake is fine , or go Superformance . I also need to buy TF rocker shaft studs , but my Crane Gold 1.5 rockers will be reused . I currently use a 0.039 x 4.410 Cometic but may economise with the felpro if it works . I know economy and racing are mutually exclusive but by the time parts arrive I am at double the US$ cost . thanks again ,
Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: Thoughts on cyl head repair
[Re: tex013]
#2499265
05/22/18 11:37 PM
05/22/18 11:37 PM
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Joined: Sep 2015
Posts: 1,096 Australia
ozymaxwedge
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super stock
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How many "budget" racers have re used Cometic head gaskets ? I have, with only a week between races we had to try it, cleaned, copper spayed and perfect.
1963 Plymouth Max Wedge 1971 Barracuda
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Re: Thoughts on cyl head repair
[Re: tex013]
#2499714
05/23/18 10:49 PM
05/23/18 10:49 PM
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Joined: Jan 2004
Posts: 13,247 Mt. Vernon, Ohio
dartman366
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Ok , just to go down the road a bit . Which head gasket is good for the Tflow head ? Felpro 1009 , 8519 or buy the Tf cometic which doesn't have a 4.410 bore ? I understand the Felpro max wedge intake is fine , or go Superformance . I also need to buy TF rocker shaft studs , but my Crane Gold 1.5 rockers will be reused . I currently use a 0.039 x 4.410 Cometic but may economise with the felpro if it works . I know economy and racing are mutually exclusive but by the time parts arrive I am at double the US$ cost . thanks again ,
Tex I am running he Fel-Pro 1009 with the TF 240's and 12.3-1 compression and so far so good.
Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
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Re: Thoughts on cyl head repair
[Re: tex013]
#2499758
05/23/18 11:54 PM
05/23/18 11:54 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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Leak check it to verify the crack but I would sleeve it.. I had to sleeve 3 ports on my W-2s and 1 port on my W-5.. so far its great.. use a mill to bore your holes
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Re: Thoughts on cyl head repair
[Re: dartman366]
#2499845
05/24/18 04:50 AM
05/24/18 04:50 AM
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Joined: Mar 2009
Posts: 2,463 Sydney,Australia
tex013
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[/quote]I am running he Fel-Pro 1009 with the TF 240's and 12.3-1 compression and so far so good. [/quote] KOOL I have ordered the 270's , the 1009 will certainly save some $
Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: Thoughts on cyl head repair
[Re: MR_P_BODY]
#2499846
05/24/18 04:55 AM
05/24/18 04:55 AM
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Joined: Mar 2009
Posts: 2,463 Sydney,Australia
tex013
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Leak check it to verify the crack but I would sleeve it.. I had to sleeve 3 ports on my W-2s and 1 port on my W-5.. so far its great.. use a mill to bore your holes Mr Peabody ,won't chance it . Port wall is almost tissue thin . It would be hard to get at crack ends to drill to stop extending . And there is also thought of any other port cracking . thanks Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: Thoughts on cyl head repair
[Re: tex013]
#2499861
05/24/18 08:49 AM
05/24/18 08:49 AM
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Joined: May 2003
Posts: 6,562 Downtown Roebuck Ont
Twostick
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Still wishing...
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Downtown Roebuck Ont
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I am running he Fel-Pro 1009 with the TF 240's and 12.3-1 compression and so far so good. [/quote] KOOL I have ordered the 270's , the 1009 will certainly save some $ Tex[/quote] If your block has chamfered bores, those 1009 gaskets will likely overhang the bore. Kevin
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Re: Thoughts on cyl head repair
[Re: Twostick]
#2499865
05/24/18 09:07 AM
05/24/18 09:07 AM
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Joined: Mar 2009
Posts: 2,463 Sydney,Australia
tex013
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I am running he Fel-Pro 1009 with the TF 240's and 12.3-1 compression and so far so good. KOOL I have ordered the 270's , the 1009 will certainly save some $ Tex[/quote] If your block has chamfered bores, those 1009 gaskets will likely overhang the bore. Kevin [/quote] It is 0.030 overbore . Yes i will check Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: Thoughts on cyl head repair
[Re: tex013]
#2499903
05/24/18 11:04 AM
05/24/18 11:04 AM
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Joined: Jan 2003
Posts: 14,496 So. Burlington, Vt.
fast68plymouth
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I Live Here
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So. Burlington, Vt.
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Head gaskets...... Not really a good place to scrimp IMO. I'd stick with the 4.410 Cometics.
What you're experiencing is why I prefer not to try and make a head into something it's not by excessively porting it. If you need a bigger head....... And something is available.......its often less expensive in the long run to just get them at the start.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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