I6 Head/Header question

[hobsiscool]

Check out this pic, where it's circled, there's a stud...will this come out so that I can put a threaded stud in to hold that part of the header on? I have one of the old washers everywhere except the ends, which is where these little studs are, but they aren't threaded (at least on the outside)...this just seems like it would leak if I don't have a bolt holding it down.

Thanks!

[hobsiscool]

bump

[BadaSs_Cal]

I always thought they were just for a guide... so u get the exhaust manifold on straight.. I say see if u can pull it out.. if not leave em in.

[hobsiscool]

i'm seeing photos that appear to have them in, and out....if they aren't goin to leak then i'm not going to try and kill myself getting them out, but if they may leak then I want to yank em out and get some studs in them...anyone else have any clue?

[hobsiscool]

also, while i'm at it...is my distributor in backwards? my timing mark is on 0, the rotor is pointing toward the #6 wire, all the wires are in order...should it not be pointing to #1? Will this make a difference?

[zeeklu]

Just grab them with vise-grips and unthread them. Mine didn't leak . I did the same thing. Chris

[hobsiscool]

that's what I thought, but if it wasn't goin to be a problem, why fix what aint broke ;-)

[hobsiscool]

any comments on the dizzy issue?

[john]

Originally Posted by hobsiscool

any comments on the dizzy issue?

You're probably on the exhaust stroke on #1, roll it over another 360 and it will point to # 1.

[biggreen292]

both of mine have threaded studs there.

i forget the firing order of the L6 but the crank spins twice for the distributors once so the 0 mark will be at #1 and at the opposite side of the distributor.

where did you get those headers? all i can find is long tubes and they won't fit my bel air so i've been looking for a 1 ton truck manifold but yours would work even better.

[geezer#99]

Easier to install long studs on each end now before you finish putting it together. The po installed some on my 230 with Langdon's headers. Sometimes more is better.

[hobsiscool]

yeah the kit came with a few long studs so i'll probably see what I can do about getting the non threaded studs out and replacing them...biggreen, the headers are Langdon's...they're solid and I've heard good things about them... http://www.stoveboltengineco.com/aca...?productid=171

[slomotion]

You won't be sorry with the Langdon headers. They keep the eng compartment cooler, are quieter, and don't have the ambient noise that tube headers have. Being cast, they're also less susceptible to leaking from heat cycles. I put mine on, retorqued them after a couple of heat cycles, and haven't touched them in three years.
Looking at your picture, I'm guessing you have the same problem I had in that your intake flange is about a heavy 1/16 inch thicker than the exhaust header. I ended up grinding the oval "washer" the amount that the intake was proud so that there was even pressure on the flanges particularly since your Offy is aluminum, and you don't want to over-torque the fastener to insure the header is tight enough.

[RichardJ]

You said "non threaded studs" in your last post. To repeat what everyone said and to make sure it is clear, those end guide pins are threaded into the head. Every hole down the side of the head is threaded 3/8-16. The heads originally had those end pins and the third hole from each end had a threaded stud for a 3/8-24, nut.
I put studs in all eight holes and it makes it a lot easier to hold all three pieces and the gasket in place for assembly. In the picture there is not one nut or bolt holding the manifolds. They are just resting on the studs.

[biggreen292]

excellent, those should work great.

[hobsiscool]

Originally Posted by RichardJ

You said "non threaded studs" in your last post. To repeat what everyone said and to make sure it is clear, those end guide pins are threaded into the head. Every hole down the side of the head is threaded 3/8-16. The heads originally had those end pins and the third hole from each end had a threaded stud for a 3/8-24, nut.
I put studs in all eight holes and it makes it a lot easier to hold all three pieces and the gasket in place for assembly. In the picture there is not one nut or bolt holding the manifolds. They are just resting on the studs.

That's what i'm talking about, the end guides...it helps to know they come out, and I will be placing threaded studs in their place.

Originally Posted by john

You're probably on the exhaust stroke on #1, roll it over another 360 and it will point to # 1.

I think you're right, when I sat down and thought about it I felt stupid.