TURBO:
M27 Garrett AiResearch T3 turbocharger

SPECS:
Garrett model number: TA0301 (T3 series turbo)
OE Part #: 465228-3 Compressor housing A/R: .42
Turbine housing A/R: .48
Horsepower Capabilities: ~250hp
Internal Wastegate: No
Water cooled: No
Wastegate setting: 7 psi

^That's what I was told by the seller. Anyway, I have a stock-internals B18b1 and want to get around 230-250whp. I was wondering if this turbo is too small and would be running past its limit (or close to it) and if it'd stop building power in the higher RPMs. If I buy this turbo, it will be run with some cheap log manifold. TIA for info/comments/help.

 

It will be a bit small. You'll have good low end grunt, but no top end.

 

Dang that's what I was thinking... the reason I'm asking is because I found a kit for cheap. But I guess I'll have to pass.

 

Every dynograph I've seen with this size turbo, the powerband disappears at higher rpm's. Spool up is very quick though, but you're right you will just have no top end.

I will be running this same size turbo because I figured with the ls motor I wouldn't be shifting that high, I wanted quick spool up, and I got it for cheap. I'm not sure how it will handle on the gsr tranny, but hopefully I'll have it installed soon enough and be able to answer my own questions.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by leeminho86 &raquo;</TD></TR><TR><TD CLASS="quote">Every dynograph I've seen with this size turbo, the powerband disappears at higher rpm's. Spool up is very quick though, but you're right you will just have no top end.

I will be running this same size turbo because I figured with the ls motor I wouldn't be shifting that high, I wanted quick spool up, and I got it for cheap. I'm not sure how it will handle on the gsr tranny, but hopefully I'll have it installed soon enough and be able to answer my own questions. </TD></TR></TABLE>

Well the redline on the LS is already low compared to vtec b-series and if I'm going to be turboing my car I want to make sure it makes good power all the way to redline, not to mention that I'd rather have a little less power lower down and more higher up to maybe help a little with wheelspin. If you install it soon though, let me know how it is.

 

Personally i love this turbo. Had it on my b16a, great low end power, and still had a little juice left in VTEC, fell on its face about 7200 but an absolutly killer street turbo. Id say run it if you want a killer street setup.

 

You'd probably want the .63ar turbine housing, maybe a stg3 wheel, but that would mean getting the turbo from garrett, not cheap. If you were going to do that, a bit more would get you a super60 t3. For a street B18b1 with the ls trans, it will be fine if you push it to 16psi or so, that will make 220-240whp, but have a huge torque hump more like an srt4. I plan on starting out my built d16 with this turbo. If I don't like it, I'll go back to the t3/t04b, but not before I try a 'special' turbo. Same .42/.48 50trim housings, except a 57 trim t4 wheel inside.

The diff between the 50trim t3 and 57trim t3/t04e will be 2000+ rpm later spool, 20-30 HP (to be safe with old, stock internals & DD'ing), and a few hundred dollars. Personally I'd rather run a good street turbo, save money for a build, then upgrade the turbo later.

 

It would help to know the wheel trim. Figure needing another 3 psi to get to 230 hp with a 50 trim t3 than with a 60 trim t3. Either way, you won't get close to 230 whp on 7 psi.

I like using t3s for the quick spool-up, for autocross. I also rarely shift above 5K rpm during daily driving, which is good, because I don't build much more power after that. The t3/t04 would be much more suited to making that kind of power on relatively low boost.

 

The turbos off of Ford Thunderbird Manuals are T3 flanged with .63AR. To be more specific, they are .60/.63, giving you plenty of power up top on an LS.

 

i made 244 at 18psi with that turbo...on a 2200 pound chassis it ran 7.6s @93mph in the 1/8th mile...the quick response made it fun to drive on the street but the turbos didnt last too long...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jockobo &raquo;</TD></TR><TR><TD CLASS="quote">i made 244 at 18psi with that turbo...on a 2200 pound chassis it ran 7.6s @93mph in the 1/8th mile...the quick response made it fun to drive on the street but the turbos didnt last too long...</TD></TR></TABLE>

What engine was this on, and what was done to it? That's a high psi number, and that's what I'd be worried about... running it near its limit and having it not last very long.