I'm trying to make a t3 inlet flange for a manifold project. So far I've been able to find these specs:

The Garrett TB03 mount flange outside dimensions are approx. 90mm x 82mm, with 4 bolt attachment holes, on rectangle 85 mm x 45 mm c/c apart.

which doesn't make any sense to me but whatever.

I need to know what the center hole dimensions are, the port for the turbo inlet.
I also need to know the size of the bolt holes that need to be drilled.

If anyone could measure this for me I'd appreciate it.

and no, I don't have a T3 to take measurements off of, otherwise I would.

 

somebody's GOT to know this.

 

okay how about this, does anyone know the size of the bolts used on a t3?

 

i think i used 1/2 on mine? or it might have been 3/8

 

man, if i had a tape measure...

I am using 3/8" bolts on the manifold I have sitting here. looks like 7/16" on dans. If I had a tape here I'd draw you up a diagram.

 

do those dimensions seem about right up top? I know the outside dimensions are screwed up but the bolt holes?

 

sounds close if not dead on.

 

http://www.jgstools.com/turbo/tif.html

that ought to do it.

 

awesome! thanks!