Thread: Sanderson header install

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Sanderson reccommends using Permatex PX82180 instead of gaskets to install their headers. I went to Napa and they don't carry this stuff. Has anyone heard of it? where can I get it? should I just use gaskets?

Looks like it's pretty common per data search, here's one source; http://permatex.carshopinc.com/produ...id/42304/82180

That number has as much to do with packaging as product, ask for "Ultra Black" and they may have it in a different size/package.

From the picture Bob posted it's RTV black hi temperature silicone. Napa has it here but the tube has the number 598B on it. It might just be a code thing for Napa (like Bob already has said). If you ask for RTV I bet they carry it. Good luck and post a shot of those headers after installing them!

I've got Sanderson headers too, and had read this as well.
On their site this is posted in the technical section:
Exhaust header problems are history, thanks to Sanderson's exclusive new port seal design. The precision ground, built up weld bead surrounds the exhaust ports and extends past bolt holes to eliminate leakage and blown gaskets. In fact, the seal is so tight that gaskets aren't even required! The new flange has been extensively road tested on high HP, high RPM motors, and is now standard on all our tubular steel blockhuggers and roadster headers.

A patent is in the works. Just what you expect from Sanderson Headers, the leaders in performance exhaust products.

This might be more helpfull
http://www.sandersonheaders.com/tech...stallation.php
It is the link for their instructions for install. I think you'll be fine with the RTV Hi temp silicone.

Bullshit! run the gaskets or both-been there done that!

I didn't trust the no gasket or RTV routine with mine (either set, I have one on my 23 and ran them on my 27 for years) so I put regular header gaskets in there. However, on Dans 455 Olds he just bolted them up with no gaskets so far and through a lot of hours test running the engine there have been no leaks we can see.

But I plan on installing gaskets when I put the ones back on my 27, just because I am old fashioned, I guess.

Don

Sanderson and I had a "discussion" about this very subject. They are full of c@#p with the RTV. Exhaust flow can reach 1200*F on occasion and that RTV is not acceptable. As far as flat - they build up the flange with MIG weld then grind it - and flat, mine sure weren't!!! I looked at the Fel-Pro gaskets, but the holes were too small for the GT40P heads so ended up with these from Earls - not cheap, but a quality part: http://www.summitracing.com/parts/EAR-29D03AERL/

Originally Posted by IC2

Sanderson and I had a "discussion" about this very subject. They are full of c@#p with the RTV. Exhaust flow can reach 1200*F on occasion and that RTV is not acceptable. As far as flat - they build up the flange with MIG weld then grind it - and flat, mine sure weren't!!! I looked at the Fel-Pro gaskets, but the holes were too small for the GT40P heads so ended up with these from Earls - not cheap, but a quality part: http://www.summitracing.com/parts/EAR-29D03AERL/

That does not mean the RTV gets to 1200 F. If it did your aluminum heads would also melt. The weld beads on mine were fly cut and very flat. If installed per manuf instructions they will work fine.

Kitz

Originally Posted by kitz

That does not mean the RTV gets to 1200 F. If it did your aluminum heads would also melt. The weld beads on mine were fly cut and very flat. If installed per manuf instructions they will work fine.

Kitz

Lucky you - my Sanderson's - not pretty. They needed 6-8 hours of work just so they could be shipped out for Jet Hot coating, including MIG repairing their crappy sealing "flat" welds to even seal with a gasket

RTV - on an exhaust, not me.

I installed my Sanderson Headers per the instructions with the recommended Hi temperature sealer. That was in April 2006 and more than 11,000 miles ago. I have had no leaks at the heads at all. If installed correctly they work as advertised. I have however, had to replace collector gaskets a couple times and finally went to the copper metal collector gaskets. No problem since then.

Pat

Ok thanks everyone. The picture Bob posted is pretty standard stuff I guess. I actually bought that exact tube I believe for the water pump, but I did notice it was only to 625* so I thought PX 82180 was a special higher temp silicone. There is enough approval for the ultra black high temp stuff here that I think I will go with that and follow Sanderson's directions. My version of the directions did not say Ultra Black RTV, it just used the number PX 82180.

"Coat the contact surfaces of the built-up weld rings on the back of the header flange with Permatex Ultra Black RTV, then slide the header over the studs."

So I want to actually coat the weld beads just around the four ports only?

Originally Posted by 35fordcoupe

Ok thanks everyone. The picture Bob posted is pretty standard stuff I guess. I actually bought that exact tube I believe for the water pump, but I did notice it was only to 625* so I thought PX 82180 was a special higher temp silicone. There is enough approval for the ultra black high temp stuff here that I think I will go with that and follow Sanderson's directions. My version of the directions did not say Ultra Black RTV, it just used the number PX 82180.

"Coat the contact surfaces of the built-up weld rings on the back of the header flange with Permatex Ultra Black RTV, then slide the header over the studs."

So I want to actually coat the weld beads just around the four ports only?

I went by their instructions when I mounted mine.I think they ask that you re-tourque the bolts after a short period of driving.My kit had bolts with it. No problems with leaks at the moment,mounted in 2006.

we hAve sanderson on the 429 installed per directions. no problems in running engine, but only in garage so far.

I had great experience with sanderson. we needed custom headers on the driver side to accomodate the Toyota steering box (power steering for 51ford truck). contacted sanderson because we had a set already and their site mentioned custom headers. they shipped me q box of tubing, I cut and arranged it and tacked. sent it back, they made a set based on that and sent it for test fit, then coated and finished it. 100 bucks over regular cost.

Well I don't need to worry about how to install them quite yet...the passenger side header won't clear the motor mount! . I test fit the drivers side when I was doing the steering, but never tried the passenger side. Now I have to figure out a way out of this