disturber of the peace
- July 28, 2004
- Reaction score
- City, State
- Year, Model & Trim Level
- 99 eb 5.0 awd
If you ever saw a pair of TMH up front, you'd see quality all over them. For whatever reason, they're just a bitch to seal. Given that leaky gaskets are a very common occurrence on even stock 5.0 Explorers, the problem could be with the Ford design as much as anything. I had a manifold leak before I did the headers with the stock manifolds. It was very apparent when we took the old gasket out before the TMH install.Maybe people just arent prepping their install correctly, like I said I never had any sealing problems with good ole felpro gaskets but I do make sure both surfaces are even
and clean before I install, use locking bolts and never had problems.
I do know there are a lot of crappy headers for Mustangs which might explain some of the complaints not to mention a lot of people who just throw them on any ole way and expect them to seal .
I don't know the Mustang game very well, but I got WAY more good information on 5.0 header gaskets by scouring those forums and a lot of folks were dealing with leaky gaskets. Many of them solved the problem by switching to Felpro/Percy's/Remflex. I decided on Percy's because even though they were pricey, they were much cheaper than Remflex when you factored in shipping to Canada. Remflex are hard to find and they gouge us with UPS shipping (which always means brokerage and other fees this side of the border). I figured I couldn't go wrong with Percy's as there are a lot of good documented cases of sucess with them. I'm assuming many of the installs were done with "quality" headers too.
Anyhow, this thread wasn't about questioning the quality of Bob's design. Anyone who owns his headers knows they're first rate. I'm just looking for pointers on doing as gasket change so I'd appreciate it if we could keep it on topic.
Thanks for your input.