So guys. After a long looking at why I wasn't getting boost I realized it was that my cast manifold isn't all the way on my turbo. It must have come loose and left a gap big enough to watch blue flames come out of. So found out why I have no boost. Anyway. Does anyone know what size bolts they are? To hold on the exhaust manifold onto the turbo. I'm missing two of them and have no idea the size. Thanks in advance.

 

It's a Garrett Gt3076r turbo btw

 

The turbo does not have threads. It's the manifold that is threaded. Every manifold may have different threads. There's no way of really knowing especially if you don't even know what kind of manifold you have. But the thread pitch is most likely 10 by 1.25 or 10 by 1.5. I know the inline pro log manifold as well as the generic rev hard style manifolds are 10x1.25.

 

Take one of the other bolts out and head to the hardware store.

 

So it's the manifold that has threads which connects to the turbo and you have to put a nut on the other side? Sorry for being a noob I haven't done this kind of work before.

Edit: or does the bolt go through the bottom and just thread into the mani?

 

The bolt goes through the turbo flange and in to the manifold. I'm assuming it is a t3 flange, so it is probably threaded, no need for a nut on the other side.

 

It is a T3. So yea I'm just gonna have to get the right bolt size and try to Jimmy my way in there and put it in.

 

Does anyone know the length generally for them on a T3?

 

Good luck with it....mine kept backing out on my Full-Race mani

The only way I got mine to keep from backing out, was to go longer on the bolts..thread all the way thru the mani and put a nut on the end.

Grade 8 bolt -> Nord Lock washer -> grade 8 washer -> thread thru mani -> grade 8 washer -> Nord Lock washer -> grade 8 nut

Nord Lock washers are worth getting as well

Scott-

 

But mine doesn't go all the way through the manifold. Like the bolt slides through the flange and screws into the manifold. So I couldn't do that I don't think