T3 adapter plate power loss

[TSiBill]

I am currently using an adapter plate between the manifold and turbo that allows me to run a mitsu style turbo with a t3 style manifold. i was wondering if anyone has used something similar and had bad experiences with it. i am currently debating between a bb50 trim and a gt3071r but am afraid that if go with the gt3071r i will get some power loss due to the adapter plate. so any advice about the adapter plate and which turbo would be great.

 

[snox135]

If you have a T3 manifold get a T3 turbine. It's a much better unit.

 

[oldman]

Why would you need the plate if you're running a GT3071R?

 

[TSiBill]

The manifold is a t3 style manifold and the gt3071r has a mitsu inlet

 

[GVR4592]

Usually people get the adapter plate so they can use a T3 turbine with the stock manifold. If you have a mitsu inlet turbo, just use your stock exhaust manifold, and you won't have to worry about the adapter plate.

 

[oldman]

The manifold is a t3 style manifold and the gt3071r has a mitsu inlet

Then it's not a true GT3071R rather it's a hybrid GT3071R, why don't you just purchase a full GT3071R since you already have a T3 manifold?

 

[TSiBill]

i did not know that the gt3071r came in full garret. Thank you very much.

 

[oldman]

i did not know that the gt3071r came in full garret. Thank you very much.

Sure they do.

http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT30/GT3071R.htm

 

[TSiBill]

what is the difference between a 4-bolt and 5-bolt turbine housing

 

[luvmygst]

Back to the wuestion, because I am thinking of doing this. Do you lose any power with the adapter plate?

 

[DSM90AWD]

Back to the wuestion, because I am thinking of doing this. Do you lose any power with the adapter plate?

AMS has used "adapter plates" for years on their turbo kits and have made much more power than you/I would ever get

And to the OP, get the GT3076R (s/a GT30R) not the GT3071R as the 3076 has ALOT more potential (540WHP vs 480WHP) with very little sacrifice in spool

 

[TSiBill]

how much worse is the spool on the gt3076r than the gt3071r

 

[99gst_racer]

what is the difference between a 4-bolt and 5-bolt turbine housing

Typically, the 5-bolt housing is set-up to run an internal wastegate, whereas the 4-bolt does not have that provision. If you're going to run an external wastegate, go with the 4-bolt.

 

[TSiBill]

thanks 99gst and also does the 4 and 5 bolt effect the type of o2 housing needed?

 

[99gst_racer]

thanks 99gst and also does the 4 and 5 bolt effect the type of o2 housing needed?

Yes, it directly affects it. Obviously, you would need to match the bolt count of the turbine house to that of the O2 housing.