Exhaust Manifold to Head Bolts

[Paintballaa5]

Well i pulled my exhaust manifold, and it had 3 bolts holding it on, with the rest of them studs. And now I'm going to put it back on, and now one of them doesn't fit. It seems to short?

I replaced the stock manifold with the Evo 3 manifold. Is a longer, or different sized bolt necessary to put it on? Or could have something else gone wrong? Its the second from the left hole, on the bottom side. All of the others went in just fine, and it's nice and snug.

 

[mattasi]

Well i pulled my exhaust manifold, and it had 3 bolts holding it on, with the rest of them studs. And now I'm going to put it back on, and now one of them doesn't fit. It seems to short?

I replaced the stock manifold with the Evo 3 manifold. Is a longer, or different sized bolt necessary to put it on? Or could have something else gone wrong? Its the second from the left hole, on the bottom side. All of the others went in just fine, and it's nice and snug.

If the flanges for both manifold are the same thickness then you should be able to reuse your old bolts/nuts. Maybe you mixed up the order of how they came out? Were any of the studs different lenghts or something?

 

[Paintballaa5]

If the flanges for both manifold are the same thickness then you should be able to reuse your old bolts/nuts. Maybe you mixed up the order of how they came out? Were any of the studs different lengths or something?

The studs are all the same and fit right, along with the two bolts in the top and bottom left holes of the manifold. I don't understand why the 3rd doesn't fit now..

Oh and neither of the other two bolts will fit in it right either. If I shine a light down it i can see straight through it, and it looks as if it should go right in.

 

[mattasi]

The only other thing that comes to mind right now is that the hole is stripped out and the stud is just not grabbing any metal?

 

[Paintballaa5]

The only other thing that comes to mind right now is that the hole is stripped out and the stud is just not grabbing any metal?

Yea I suppose so. They LOOK fine to me when looking down it, but who knows. Ill try to find a bigger bolt I guess

 

[mattasi]

If you find that they are stripped out then you can just heli-coil the holes and still use the same studs that you have.

 

[Paintballaa5]

If you find that they are stripped out then you can just heli-coil the holes and still use the same studs that you have.

Not real sure what that is, I'll look into it. Thanks!

 

[mattasi]

Ok look them up and check them out, heli-coil are easy to use, and you can get them from the local auto store.

Of course only if the tapped holes in the head are actually stipped out.

 

[Kapok6]

Heli coiling is not very hard. I believe they are m8x1.25.