GT-13 or GT-12

[paul s]

Hey, Just wonderring if anyone has any experience with the SBR 12- or 13. I was looking to upgrade my turbo(50trim) to one of those. How is the spool up, copressor surge? Any opinions would be great. I'm looking to get around 450 AW hp.. I dynoed 350aw hp on the 50trim on pump gas. below is the comp map for the 13(i think). would that turbo be OK for running 20-24psi on pump and 30 on race gas and still be efficient..

You must be logged in to view this image or video.

 

[BrokenTsi]

you wont like it, go with FP3065

 

[Staytuned]

Niether ...stick with your 50 trim or maybe go with a evo 111. I am tired of being slower than you.

 

[paul s]

Hehe^^ the 3065 is too big for me, I want a nice powerband..

 

[CanadianTSi]

Niether ...stick with your 50 trim

To late, it's already in my Possesion

 

[diambo4life]

Forget about the GT12 or GT13. The 50-trim wheel is very good. I have seen someone dyno 450WHP on an FP Green which is a 50trim wheel. That was at 27ish psi on race gas. Another choice is the FP-3052 or do a Full Garrett GT-35R setup. That will be more than 450AWHP though.

 

[anconover]

i woulda stuck with the 50trim. Perfect for 450whp. Get another 50trim, green, FP3052, or i suppose a GT turbo but..

 

[Rick4g63]

I would go with the fp green or 3065 with an external wastegate.
Correct me if I am wrong, but squeezing another 100 whp from that 50 trim will over run the efficency of that turbo, not to mention a stock 4g63 valve train. Right?

 

[paul s]

I did have a 50trim(green) but its time to upgrade..

 

[BoostinAWD]

I have nothing but good things to say about the GT-12, stay away from the GT-13 though its one laggy mofo beleive it or not.

The spool on my gt-12 is just like my stocker 91 tsi equiped with a plain 16g. Extremely Fast!

I'll sell you my gt-12 and get me something bigger

 

[suicidal2af]

For the record, minus the housings, the SBR GT-12 and fp3052 are pretty much identical turbos.

That said, expect crazy power and insanely quick spool times from either of the above. But shouldn't you be getting more than 350 from a 50 trim? That's a pretty big turbo...

 

[v8s_are_slow]

i have the Gt-13 and i'm pretty happy about it. i was actually gonna go with the GT-14 but leon rightman here on the board was selling his 13 and so i just had to snag it. he was running 10's on it. i'm trying to match that. still a few more things i wanna buy for the car though. but anywho, it doesn't seem all that laggy to me at all. i dunno what the big deal is about that.

i can't speak for the GT-12 cause i personally don't have one and have never seen one nor have driven in a car with one.

i will say that i called slowboy not long ago cause i was having problems with my tial and was looking at all my options cause i needed something pretty fast to fix my problem. i was asking about getting another housing to go internal (as a possibility anyway) and craggar told me that he didn't have any housings in stock and that it was because pretty much most people had been dropping the GT-13 and going with the GT-14. i didn't bother to ask why though. i'm happy with mine. hope this helps. laters!

 

[eclipse90gsxt]

I used to have the GT-12 and loved it. I recieved full boost around 3700-4000K and it pulled nicely. I never got a chance to dyno or run at the track because of a HG/head problem and my loss of my job. I only got to drive the car with it on it about 5-10 times and because of my HG problem I had a tad lower compression, so I know I didn't feel all of the power and get it tuned all the way right. Even at lower compression it was a huge difference over my Big16G.

 

[paul s]

Awsome, thanks for all the info

 

[v8s_are_slow]

let us know what ya decide on. i'm curious as to what ya go with. any reason you wouldn't wanna go with the GT-14? too big for ya? just wondering.

 

[diambo4life]

For the record, minus the housings, the SBR GT-12 and fp3052 are pretty much identical turbos.

They cant be "identical" if they have different housings. Those housings wil make a big difference in HP output. The fatsest GT12 I have seen was a 120mph trap and that was on a built motor and fully supported. I see alot of FP-3052's trapping over 120mph with lower boost easily. I have the GT12 and it's housings are too small. I compared it to that of a PTE SCM-60 (TO4E) and it was dwarfed - everywhere! I haven't run mine to full potential yet since my car had low compression but you need to run a GT12 at high boost 28-30psi to get the most out of it. Below 20psi it's lethargic really.

Stick with the Green. That turbo will put out 450AWHP with proper supporting modifications and tuning. Remember, bolting up a bigger turbo will not neccessarily give you more HP! Tune..tune..tune. You have a turbo that has been proven countless times. Use that extra money to fully complement it. My opinion...

 

[SlowboyCSE]

GT12 CHRA and 3052 CHRA aren't exactly the same. They have many differences.

Now our GT30R CHRA and the 3052 CHRA's "just might be similar"

50 trims have always been great turbo's can't really say any drawbacks.

Cragger

 

[Staytuned]

Don't give him any ideas on getting the GT30R thats what I am getting for sure.

 

[CanadianTSi]

That said, expect crazy power and insanely quick spool times from either of the above. But shouldn't you be getting more than 350 from a 50 trim? That's a pretty big turbo...

That was done on an AWD Mustang Dyno that reads pretty low numbers. His car traps 119mph so It's obviously making some power....

 

[The Flash]

So is it true that you need to run 25+psi on a gt turbo for it to operate efficiently? I was thinking of buying a gt12 or gt14 because of the inproved boost response over regular trim-bearing turbos and their crazy airflow capabilities. So whats the deal, are these turbos beneficial to us running pump gas and 20pis most of the time?

 

[BoostinAWD]

Yes the GT's work extremely well at the 25-30psi range. The difference between my gt12 at 18psi and 25psi is a night and day difference. I can merge onto the onramp doin 45 mash it, and before I even need to merge into the freeway I'm doing 125 Not like I would ever do such a thing

I've been able to get away with 24psi on it, with crappy 91 because of my massive intercooler, I need some water or propane injection.

On a side note, the L2R and GT series are identical from what I understand. So with that being said the L2R has gone 10's at 25psi. Well tuned of course.

 

[paul s]

OK I have decided to get the Gt13.. let you guys know when it comes in..

 

[CatchMe]

Please let us know! I'll be making the same decision in a couple weeks. GT12 or GT13. My main concern is the spool up difference vs. what the turbo will flow in terms of LB/min on a 6bolt with stock cams and intake mani. Any dsmlink guys out there have one of these turbos?

 

[Staytuned]

He has DSM link but won't have any info till spring when it goes back on the road.

 

[XtReMeToYz]

So I have been searching all day and have yet to really see a solid number from people as a spool up time? I was thinking 3052, but screw that o2 housing, I dont wanna screw with that. Thanks.