August 3, 2008hey i''ve gone through 2 sets of headers and i always have a leak i know headers *or* known for that but i cant get ride of the leak and i''m sick of having one , i''m about to go to cast again but i dont want to , i heard the long tubes dont leak as easy is that true *or* do you guys have any info that would work , oh and i''m running velvet pro ( think thats how it''s spelt) gaskets ,
August 3, 2008where is the leaking coming from?
August 3, 2008what you mean, i''m pretty sure the headers , the collection flang is good and tight and both done equal like the two bolts on one flag they are done the same so one side is not tighter the other .
August 3, 2008rogco, I think what Artisan is asking is if it is leaking from the gasket between the head and the manifold, a crack in the manifold, the flange at the collector, etc. That might help us figure out a solution for you. I can understand your frustration. I am fighting that same ticking problem. Doing some research, it is sounding like atleast for me the problem might be some crud build-up inside the head, restricting some of the oil flow, not allowing the tappets to remain tight against the rollers. But, that would involve pulling the head most likely. NOt looking forward to that. I''ve lifted the heads off of the truck twice already, not looking for a trifecta.
Chris "Thermo" Coleman and Nukie, the radioactive 97 X
August 3, 2008well it''s a new engine i had a 4.6 with headers and the leaked and now with my new 5.4 i put a different brand of headers on a better kind and still leak , i''m supercharged too could that be a reason too
August 3, 2008What headers are you using? What gaskets are you using? Have you re-torqued the headers after getting them hot after the install? Have you tried using some Stage 8 Locking bolts?
And again where is the leak?
August 3, 2008just my here but when i put on headers, i use teflon on the bolts. not teflon tape but the liquid teflon thread sealer you get in a tube at your local auto zone. it has worked for me on my mustang, about 5000 miles on the motor and no leak there yet.
hope it helps
August 6, 2008if the gaskets are of the paper variety, i''d switch to a metal type, copper/ aluminum. if it''s ticking, and you can''t tell where, I''d go buy a mechanics stethoscope to pin point it. i went through 3 sets of paper gaskets before going with copper ones, no more leaks. and i have aluminum gaskets at the collectors.
August 6, 2008you can get gaskets for the collectors how does that work and no sorry cant tell were it''s coming from i''ll go buy a scope and i have the alum gaskets velvet pro i think it''s called and yes i have re-torqued them
August 6, 2008not all collectors have gaskets. Some brands like Hedmann use a ball type socket, that is supposed to be leak proof. Mine have been.
Sorry I cant offer much to help with the leak, except maybe to try either a different brand of gasket, *or* double up the gaskets. I run the stock hedman paper gaskets on my 75, cause they are thicker, but half of the bolts that hold the header on are Nuts/bolts so I can get them pretty tight!