Your donations help keep this valuable resource free and growing. Thank you.
|
SEALING HEADERS TO HEAD |
Post Reply | Page 123> |
Author | |
JERSEYJOE
AMC Addicted Joined: Oct/23/2008 Location: TUG HILL NY Status: Offline Points: 1718 |
Post Options
Thanks(0)
Posted: Sep/09/2020 at 8:22pm |
One of my Jeep plow trucks has a 360 with headers. The header flanges are not perfect where they meet the gasket to the cylinder head. I use the good REMFLEX gaskets that are reasonably thick but still a few dark spots on the head from an exhaust leak mostly between the middle 2 ports.
What is the best liquid sealer to use between the gasket and header to help seal this leak? I guess the proper fix is to build up the weld bead but no time for that on this truck. Suggestions?
|
|
1985 J-20 PLOW TRUCK
1977 CJ 7 360 T-18 D 300 1970 AMX ex-SCCA car SPEED COSTS MONEY HOW FAST DO YOU WANT TO GO? |
|
BMOgremlin
AMC Nut Joined: Sep/01/2019 Location: Deer Park washi Status: Offline Points: 285 |
Post Options
Thanks(0)
|
I've had good look with the high temp silicon stuff they sell at the farm store for wood and pellet stove's. A little bead on both sides of the remflex seals them up pretty good.
|
|
Heavy 488
AMC Addicted Joined: Apr/27/2019 Location: In the Status: Offline Points: 3529 |
Post Options
Thanks(0)
|
High temp silicone worked for me. Prematex red
|
|
ghinmi
AMC Addicted Joined: Apr/04/2010 Location: Grand Rapids MI Status: Offline Points: 978 |
Post Options
Thanks(0)
|
Permatex Ultra Black. Works better than the copper/red for header gaskets. Doesn't get hot enough to need the high temp stuff.
|
|
1975 Cherokee S - Turbo Hemi stick shift autocross/drag race/street 9.97 @ 140.4
|
|
PROSTOCKTOM
Supporter of TheAMCForum Joined: Jun/20/2010 Location: Indiana Status: Offline Points: 2424 |
Post Options
Thanks(0)
|
Do you want to repair it once or have to do it over and over again? Any sealer will just be a Band Aid for the real problem and eventually your going to be dealing with replacing the head where it will burnout. I would double the gaskets and add some pieces of metal to make spreader bars to even the load out on the poor quality flanges the best you can. Or just put some iron manifolds on it and scrap the headers and the headaches.
Tom
|
|
Molnar Technologies Full Service Dealer - Crankshafts & Connecting Rods
1969 AMC Rambler Rouge Race Car 1974 AMC Hornet Hatchback, Wally Booth Outlaw Nostalgic Pro Stock Race Car Project |
|
Lenni AMC
AMC Nut Joined: Jun/05/2011 Location: Iceland Status: Offline Points: 420 |
Post Options
Thanks(0)
|
Remflex gaskets have worked better for me than any silicon
|
|
AMC Gremlin w/401
6.212 @ 117.01 - 1/8 Mile 9.785 @ 133.11 - 1/4 Mile https://www.youtube.com/channel/UCikyNqrfpMB8VzLd910Hkhg https://rbjracing1.wixsite.com/website |
|
70,71,72 AMXS
AMC Nut Joined: Oct/01/2008 Location: Ohio Status: Offline Points: 332 |
Post Options
Thanks(0)
|
On my plow truck, I had to add weld to the header flange. The sealing surfaces didn't line up in a few spots, and the stress of plowing made them show up pretty quick..
|
|
Bruce in NW Ohio
|
|
RandyB
AMC Nut Joined: Aug/04/2020 Location: Florida Status: Offline Points: 458 |
Post Options
Thanks(0)
|
Use a belt sander on the flange and even them out.
|
|
Randy B
68 Javelin SST 343 73 Charger Rallye 340 triple Blk |
|
jblue1555
AMC Nut Joined: Sep/27/2009 Status: Offline Points: 280 |
Post Options
Thanks(0)
|
find some stock manifolds, on a plow truck the collectors will become the big problem.
|
|
PROSTOCKTOM
Supporter of TheAMCForum Joined: Jun/20/2010 Location: Indiana Status: Offline Points: 2424 |
Post Options
Thanks(0)
|
Tom
|
|
Molnar Technologies Full Service Dealer - Crankshafts & Connecting Rods
1969 AMC Rambler Rouge Race Car 1974 AMC Hornet Hatchback, Wally Booth Outlaw Nostalgic Pro Stock Race Car Project |
|
Post Reply | Page 123> |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |