Re: Any good tricks to eliminate header leaks?
[Re: KnuckleDuster]
#1781988
03/17/15 05:42 PM
03/17/15 05:42 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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not likely it will bake out. I'd (1) check the flange for straightness (2) drawfile the welds (3) remflex gaskets
live every 24 hour block of time like it's your last day on earth
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Re: Any good tricks to eliminate header leaks?
[Re: KnuckleDuster]
#1781989
03/17/15 05:43 PM
03/17/15 05:43 PM
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Joined: Jan 2003
Posts: 8,666 Buford, GA
I_bleed_MOPAR
master
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master
Joined: Jan 2003
Posts: 8,666
Buford, GA
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Do they have a solid flange to mount it to the head? If so, an old trick is to cut the excess out between bolt holes and it will seal better. Worked on a cheap, unknown brand I used until my Hookers came in. Tim
'71 Charger 383/727 '17 Challenger SXT (Wifeys car )
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Re: Any good tricks to eliminate header leaks?
[Re: RapidRobert]
#1781990
03/17/15 05:46 PM
03/17/15 05:46 PM
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Joined: Jul 2005
Posts: 1,723 North Austin
KnuckleDuster
OP
top fuel
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OP
top fuel
Joined: Jul 2005
Posts: 1,723
North Austin
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Quote:
not likely it will bake out. I'd (1) check the flange for straightness (2) drawfile the welds (3) remflex gaskets
Remflex?
Unfortunately this is the driver's side, no room to file anything without removing the engine again to get the header out. Even with the exhaust unbolted, barely got enough clearance to slip the gasket in and out.
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Re: Any good tricks to eliminate header leaks?
[Re: KnuckleDuster]
#1781991
03/17/15 05:58 PM
03/17/15 05:58 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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Yeah I dont know who sells em (Remflex brand header gaskets) but they have gotten regular constant reviews (enough that they would be my choice hands down). I would eyeball the flange & go from there if anything appears way out of line especially there between #5 #7. What I like to do is loctite the studs in the head & use a fine thread nut on the outer end & & I mockup ahead of time & trim the stud so there is just enough thread left to end up with the nut flush as any more is a waste & hampers flange fitment in tight compartments which doesn't sound like an issue for you just throwing that out there.
live every 24 hour block of time like it's your last day on earth
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Re: Any good tricks to eliminate header leaks?
[Re: KnuckleDuster]
#1781992
03/17/15 06:20 PM
03/17/15 06:20 PM
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Joined: Jan 2003
Posts: 1,043 Slidell, La.
doctor_mopar
super stock
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super stock
Joined: Jan 2003
Posts: 1,043
Slidell, La.
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DO NOT USE HEADER GASKETS ! I just use high temp silicone ! No leaks!
------------------------ It doesn't matter what you do.........As long as you look good doing it !
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Re: Any good tricks to eliminate header leaks?
[Re: KnuckleDuster]
#1781995
03/17/15 08:10 PM
03/17/15 08:10 PM
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Joined: Dec 2014
Posts: 5,748 ohio
ruderunner
master
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master
Joined: Dec 2014
Posts: 5,748
ohio
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First if the headers are hitting anything, that going to tweak them away from the heads and cause a leak. BTDT when I put a Lakewood bellhousing on my RR.
If clearance issues are ok, I've had great luck with soft copper gaskets at the head and headpipe (no leaks in nearly 20 years now). Jegs and Scummit have em. They're also supposed to be reuseable but I've never tried, like I said they havent leaked so no fooling and no retorqueing needed.
20lbs is about right for little 5/16ths bolts. Too tight will warp the flanges and or strip/break the bolts. Unfortunately you may have already done this. Not sure if your aftermarket heads have dry bolt holes or not but some thread sealer won't hurt.
Angry white pureblood male
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Re: Any good tricks to eliminate header leaks?
[Re: skicker]
#1781998
03/17/15 10:52 PM
03/17/15 10:52 PM
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Joined: May 2003
Posts: 15,487 Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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I use the copper rtv on both sides of the gaskets. install,torque,let cure 24 hrs before fire up. been on the truck for 4 yrs now no leaks at the head gasket. no lower gasket leaks due to ball & cone collectors. will be installing my hedman 79250 headers on the 440 this weekend and will be doing it the same way I have done all my SB engines running headers. Ijust read here someone else used the copper rtv on both sides of gasket and let cure before install. then install them and torque for crush/seal. one thing for sure, the droplets I have seen squeezed into the flow of the exhaust port did NOT burn off in 7 yrs of use. it does not get any hotter than at the exhaust valve opening. read about doing this here on moparts in the 90s and have sealed up many warped cheapo header flanges ever since. how you liking the A-body headers of any brand for install? A-bodys are tuff install but worth the effort for performance.
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Re: Any good tricks to eliminate header leaks?
[Re: doctor_mopar]
#1781999
03/18/15 01:17 AM
03/18/15 01:17 AM
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Joined: Dec 2007
Posts: 10,542 BROOK PARK, OH
WILD BILL
Senior Member of the Junior Dragster Club
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Senior Member of the Junior Dragster Club
Joined: Dec 2007
Posts: 10,542
BROOK PARK, OH
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Quote:
DO NOT USE HEADER GASKETS ! I just use high temp silicone ! No leaks!
This
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Re: Any good tricks to eliminate header leaks?
[Re: WILD BILL]
#1782000
03/18/15 10:36 AM
03/18/15 10:36 AM
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Joined: Aug 2009
Posts: 1,317 Ohio
jlatessa
pro stock
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pro stock
Joined: Aug 2009
Posts: 1,317
Ohio
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You might try this: Like mentioned above, I cut the flanges in two places, each side. Between #1 and 3/5# and between #3/5 and #7, same on pass. side. Allows flanges to conform to ports easier. Done this a few times with good gaskets and NO leaks! Joe
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Re: Any good tricks to eliminate header leaks?
[Re: 1967GTX440]
#1782004
03/18/15 11:48 PM
03/18/15 11:48 PM
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Joined: Apr 2012
Posts: 18,880 -
RSNOMO
Moparts Torchbearer
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Moparts Torchbearer
Joined: Apr 2012
Posts: 18,880
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Quote:
I took my Hedmans to a machine shop and had them refaced.
Yes...
Have the flanges surfaced...
I got beaucoup years on a set of Hooker's with Ultra-Seal's...
NO silly-cone...
And no issues...
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