Garrett trim size?

[EG Hatch]

So I went out and got a Garrett turbo off a 89-90 turbo grand prix for dirt cheap. I can't figure out what trim size it is. There are no flow charts out there for it either... The compressor has an A/R .80 and Turbine A/R .68. From what I've read so far. This thing will have a quick spool. My concern is... will it fall flat on its face? Btw... if you type in TB2528 in google you will find lots about it except trim size and flow charts. It has a T2 flange. Any help would be appreciated. Thanks

I did the math and it came out to be a 50trim.... any input would be helpful.

 

[TiiM iiS l3eAsT]

sounds like a big turbo to me....which would be laggy but make good top end power....

post some pics of the turbo !!

 

[EG Hatch]

Okay, will do. Later on today though. Gotta get some rest. 50 trim is small... I read somewhere that trim size doesn't matter. Oh I have lots to learn, in a way. I am trying my best.

 

[EG Hatch]

This one has the crack being shown by the wastegate flapper. I plan on getting that welded shut and going externally wastegated. Depending on the size of the turbo.

 

[TiiM iiS l3eAsT]

wow nvm yea that looks kinda small....almost like a T3 42/48 but even smaller !!! i would go with something bigger....im already getting sick of my T3 42/48.....not enough top end pull for me....im gonna go with a 57 trim, 50/63...

 

[Steven.]

looks kinda big to me.

holy s**t .80 a/r on the compressor?

 

[TiiM iiS l3eAsT]

yea when i read it was .80 compressor that seems big to me....but from lookin at the pics it looks small...idk hard to tell lol

 

[Steven.]

sit a soda can next to it

search some grand prix forums for the trim size. most have them listed in like a sticky or FAQ

 

[EG Hatch]

There is a pic. If you want more I can get you more. These Grand Prix forum's are pointless. I will keep reasearching.

From my understanding, .68 on the turbine side will cause it to spool later and make peak power from 3500-7000ish. .80 A/R compressor is a decent size as well. I am new to the turbo thing and just trying to learn. I figure the only way to learn is to do it myself and reasearch as much as I can.

 

[AE Motoring]

almost looks very similar to the GT28R the disco potato with the external wastegate actuator

 

[TiiM iiS l3eAsT]

almost looks very similar to the GT28R the disco potato with the external wastegate actuator

you mean internal wastegate....idk looks like a 42/48 to me....

 

[EG Hatch]

I don't know much about it and I have been searching. I was thinking of dropping this on a 2.3L Prelude but it is too small and will heatsoak. From what I have read... when these heat up too much, they catch fire. The Precision SC44 looks like a good candidate for the victim.

 

[reyscivic]

well if you want to sell it let me know i got dibs.

 

[TiiM iiS l3eAsT]

I don't know much about it and I have been searching. I was thinking of dropping this on a 2.3L Prelude but it is too small and will heatsoak. From what I have read... when these heat up too much, they catch fire. The Precision SC44 looks like a good candidate for the victim.

nah get the SC61

 

[EG Hatch]

I'll sell it. As you all know, it needs a rebuild. There is a hairline crack. That can all be fixed. The SC 61 is a really nice turbo. They are almost the same turbo. "Almost". reyscivic, PM me. This would be the perfect turbo for a d16, d15 turbo setup.