Just got my brand spanky new W2 TTI headers (gorgeous). The gaskets that were in the box look decent. I am wondering how they are as they look like their own.
In the past, I've always had good luck with Mr. Gasket ultra seal (the graphite coated ones). I haven't used any of the new copper or fancy stuff. What say in Moparts land?

I just put my 360 back together after a head gasket failure and I am using the REMFLEX gaskets from Mancini... This is the best my headers have ever sealed! Great crush on the gasket and small imperfections in the flange don't bother them.

best header gaskets I have ever used are Percy's the thick aluminum ones I have reused them on different heads and headers and never had a leak.

You're going to laugh but I have had good results just coating the cheap paper Mr Gasket type ones that come with most header kits with hi temp silicone ( the red stuff or copper stuff) and call it done. Unless the bolts loosen up and cause a blow out they do a good job on my junk.

If you have 3/8" machined flanges just use the silicone, no gasket.

Kevin

Great question!
I will be soon installing my 440 w/stealth heads, Tri-y's, 727 and "K" frame as an assembly from the bottom, lowering the car down over it. It would really suck if I were to develop a exhaust leak. Someone out there has the answer.

Best for me is no gasket. Just high temp RTV. When the TTI gasket installed originally started to leak I repaired with RTV only. No problems for 3 years. With metal to metal contact or at most a thin layer of RTV there is nothing to blow out.

I've had good luck with Percy's aluminum ones also reused them several times. If there is a major mismatch I've used Remflex and never had any issues.
Scott

Remflex are real nice,but tough as hell to cut to size,which is what i had to do to match my exhaust ports.They do make em specific for W2 but not indy 360-1's.The gaskets indy gave me with the heads lasted 1 heat cycle and nothing left but screen

Remflex are real nice,but tough as hell to cut to size,which is what i had to do to match my exhaust ports.They do make em specific for W2 but not indy 360-1's

the gaskets that came with your headers are good gaskets. i'v never had a problem with them in the 10yrs i'v used them.

I can tell you how to minimize any leaks.. if the flange
is 1 piece cut the end tubes from the center (wedge)
and open up 1 of the mounting hole per tube so it can
slide and not buckle the flange... I like any gasket
thats part graphite.. its slippery

My experience tells me that high dollar header gaskets are bandaids for bad header flanges. If the header is good, any gasket should seal it. Brand new TTI's.... A piece of cardboard should work.

I have had GREAT success with Remflex. First time on my motorhome, lots of heat...no leaks.

If you have used other gaskets and they lasted like a year and then blew out, Remflex is the cure. Only thing that sucks is they get destroyed if you have to pull a header.

remflex hands down!

I don't like the TTi OE header gaskets, they are thin and don't seal well.. Personally I have used the Fel-Pros with good sucess..

Just my $0.0.2..

Remflex has my vote.

Thanks Guys! I agree that the quality of the header itself is a major factor. I'll never forget the first set I had so many years ago- dented up junk from englishtown swap meet, where I had to change gaskets weekly. Hey- I had it down to a science and did it in a parking lot anywhere.

What is the remflex made of?

I have always used Fel-Pro 1414's but after 2 blew out with my new 2" headers I went w/ Percy's we shall see how the hold up. I'll be heading to the track Friday night if it isn't 100* out.