Header Gasket Part Numbers?

[Scooterwrench]

After burning up a few gaskets, I went with studs and nuts with Mr Gasket copper gaskets on my aluminum heads with red locktiie on the studs into the heads.

Red locktite on aluminum? Hope you don't hate yourself later on.

 

[Scooterwrench]

Another tip to preventing leaks is to use the longest bolts you can even if you have to buy them longer than the holes are deep and custom cut them. I use like to use 1-1/4" long bolts in SBC's but they are damn near extinct unless you buy the fancy kits with the notched washers and E-clips. When using the long bolts you have to just start two bolts to hold the header up than start the rest and work them all in together.

 

[PlayingWithTBI]

Red locktite on aluminum? Hope you don't hate yourself later on.

Nope, plus I bottomed them out in the holes. If I have to get them out, I figured I'd have to drill them and heli-coil, ha ha

In the mean time - no leaks or loosening bolts Drastic circumstances call for measures. YMMV

 

[Schurkey]

Ideally, studs are not bottomed-out in the holes.

Some guys drop a small ball-bearing into the hole, so the stud can bottom against the bearing instead of the last thread cut into the hole. I've never bothered. IF I'm using threadlocker on studs, I get the stud with threadlocker and activator (if used) in place, and then get it torqued (partially, if not fully) before the threadlocker sets-up. That way the threadlocker "cures" with the stud already under tension.

 

[Scooterwrench]

Nope, plus I bottomed them out in the holes. If I have to get them out, I figured I'd have to drill them and heli-coil, ha ha

In the mean time - no leaks or loosening bolts Drastic circumstances call for measures. YMMV

Hmm,some how I missed that you used studs. Harley EVO's and twin cams use exhaust studs and yeah,they work. Rarely do you see header pipes loose on those.
Special flanged nuts?

 

[PlayingWithTBI]

Special flanged nuts?

Yep, flanged and deep thread count. 9/16" hex head. Stage 8 ones are good too but, expensive.

 

[Scooterwrench]

You were able to get 9/16" hex nuts with the flange and the wrench in there too? I've got a special 7/16" box end wrench that I thinned the OD of the box end to get in under header tubes that curl around over the bolt heads and sometimes it can be tight in there. I hate dinging pipes to get the wrench on but I've had to.
Your pipes must have a good amount of straight section right off the flanges.

 

[PlayingWithTBI]

You were able to get 9/16" hex nuts with the flange and the wrench in there too? I've got a special 7/16" box end wrench that I thinned the OD of the box end to get in under header tubes that curl around over the bolt heads and sometimes it can be tight in there

Yeah, some of them we had to use an open end wrench, others we got with this dude.

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