ATP Manifold Stud Thread Size???

[GetBoosted84]

Hi guys,

Can anyone tell me the thread size for the studs that connect from the manifold to a GT28 turbo for the ATP manifold?

I have a feeling that I was sent the wrong studs . I received 8mm x 1.25 studs but I think I need 10mm x 1.5.

So do I need:
* 8mm x 1.25
OR
* 10mm x 1.5
OR
* Something else?

Also, I would assume the same size studs are used for the wastegate port on the same manifold right?

This is the ATP manifold I am referring to:
- Image borrowed from Rosati

[A4ringedONE8T]

For the 4 bolt flange T3 = 10mm, T25 = 8mm

The wastegate port is 8mm on either

[GetBoosted84]

For the 4 bolt flange T3 = 10mm, T25 = 8mm

The wastegate port is 8mm on either

Ok awesome. I am running the T25 manifold so I do have the right bolts. Guess I just need to clean up the threads in there. it was really sloppy in there.

Thank you, I thought I was going to have to hunt down other studs to put in there since I was planning to put everything together this weekend.

[A4 TSCHUSS]

If for some reason your manifold ended up having 10mm studs you can get them at a Napa Auto Parts real cheap instead of ordering them online from somewhere. It shouldnt though if it is T25 unless you bought it used and someone upgraded to larger studs.

[GetBoosted84]

If for some reason your manifold ended up having 10mm studs you can get them at a Napa Auto Parts real cheap instead of ordering them online from somewhere. It shouldnt though if it is T25 unless you bought it used and someone upgraded to larger studs.

I don't think that is the case...

Although I might have to upgrade the hardware since one of the holes looks a marred up. I'm going to try to tap it with a 8mm first to clean up the threads then if that doesn't work I'll head over to NAPA (thanks for the tip btw, didn't even think of napa).

[A4 TSCHUSS]

Yeah they are real cheap, I bought some studs there once for like $1 a piece (7/16" size) little bigger than 10mm and some studs for the head were less than $1 a piece.

[GetBoosted84]

Got the studs into the manifold and decided to bolt up the turbo since it's easier to do now just in case I need to customize anything before this weekend when it is finding a new home under the hood of my car.



I did however notice what looks like a casting screw up. It looks almost like there is a bubble under the flange where the turbo connects to the manifold. I tried to snap a shot of it but my camera blows. Is there anything I can do about that? Like fill it with something?

[Poopie]

looks fine. That hole is from drilling and tapping holes. Its all good. See this weekend man.

[GetBoosted84]

Ok, guess I'm just paranoid. C ya Saturday.

[bassed]

Looks A ok. See you this Saturday.