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Old 06-06-2003, 11:36 PM   #1
cpu77
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Default Anyone running a T3 turbo?

I have a ludespeed Stage 3 turbo kit. I was wondering if I could put a much smaller turbo on likea T3? His 16G turbo spools quick and makes really good power at only 14psi. My car runs much slower and I have been tuned and so forth only runing 9psi of boost but what can you do. His turbo physically is tiny! I want Fast spool and the show can be over by 6k. After all the NA setup sucks as it builds power at 3k and is don e by 5500. IT SUCKS. I want a car that spools up quick and gives me me lots of 0-60 power. 1/4 mile times????? Thats for a camaro or mustang
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Old 06-07-2003, 03:09 AM   #2
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I've got a Ludespeed kit from the original group buyand it has a T3 in it instead of the T3/T4 they use today. I think he switched to get the high-end power so as to stop tranny breakages as often.

It should bolt right up, yes.
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Old 06-07-2003, 03:46 AM   #3
Midwayman
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If you're really shopping for a new turbo, look at the newer garrets. gt25 or gt32. IIRC FAT kits come witha gt25. Its a bearing turbo so should spool quicker.
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Old 06-07-2003, 08:54 AM   #4
cpu77
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I would only need to replace part of my turbo right? Where could I get the intake side in a T3? Will I be able to gt25 or gt32 if I go with them. I don't think so. Can some tell me what to buy that should bolt right up? The car the will be rich after I swap it out or just up top? Does the T3 spool up much quicker? Can I do this for $800? Wil I lose any real power or just make it more usable as a NA car?
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Old 06-07-2003, 08:57 AM   #5
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Would a place like cheapturbos.com be ok and which one would I buy?
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Old 06-07-2003, 12:57 PM   #6
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You can't just buy a center housing and compressor housing and slap it on... the wheel for the turbine may be the wrong size for the exhaust housing opening. You're best off getting them as a whole unit, that way you can actually sell off the old one as a whole unit instead.

You also might be able to find a place that can rebuild it for you with the desired components rather then buying a whole new turbo. Shouldn't be even half the price of a whole new turbo.
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Old 06-07-2003, 01:21 PM   #7
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turbonetics.com - catalog - turbochargers and accessories - compressor wheels and housing. sorry but i dont know how to link you right to it but follow this and you should have what your lookin for
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Old 06-07-2003, 04:19 PM   #8
Midwayman
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You can get a new gt 25 or gt32 for less than $800, so you should easily be able to pick up a t3 for less than that. Ive seen t3/t4 hybrids for as low as $300. A t3 turbo will make less ultimate power than the t3/t04b that you currently have. But it will spool quicker. Weren't you talking earlier about wanting up have like 300-350hp at the wheels? You have to decide what you really want though. Whatever you do go for a BB turbo.

T3 60 trim 400 CFM at 14.7 PSI
GT-30 725 CFM at 14.7 PSI
Small 16G 505 CFM at 14.7 PSI
Large 16G 550 CFM at 14.7 PSI

you need about 530 cfm @7k and 2 bar.
gt-25 probably would work perfect.
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Old 06-07-2003, 05:37 PM   #9
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Midwayman, I believe it is actually like 530cfm at 1bar. 29psi(2bar) would be considerably more than that.
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Old 06-07-2003, 08:32 PM   #10
Midwayman
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Quote:
Originally posted by Surb00
Midwayman, I believe it is actually like 530cfm at 1bar. 29psi(2bar) would be considerably more than that.
heh... excuse me, I am talking absolute terms. Used to thinking like my link does. but yes, 1 bar boost.
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Old 06-07-2003, 09:01 PM   #11
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I could be intereseted in picking up that turbo if your thinking about selling it, I PM you'd.
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Old 06-07-2003, 09:51 PM   #12
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I spoke to Andrew Nam and he said "I would suggest sending it to Turbonetics to have it upgraded with a ball bearing center housing. That should give you the response you are looking for. Or maybe ask if Tom can hook you up with a ball bearing housing. Anyone know how much this would cost and what would be the difference?
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Old 06-07-2003, 11:41 PM   #13
Midwayman
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New BB center sections are almost as much as a new turbo (at least the ones Ive seen at turbonetics) Someone poor me wrong and find us a 300-500 BB center!
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Old 06-08-2003, 12:14 AM   #14
cpu77
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Midwayman the 16G is physically smaller than a T3 but is much more efficent? I mean have you compare there sizes? So you think if I put on a T3 BB I would have lower WHP numbers at the same PSI than my T3/T4? I do want 325whp when I have heads /block/ camsTill then I have a 6200RPM redline with spool up coming on strong above 3k. It seems just as it starts to make power for like 2000RPMs it falls flat due to the stock cams and heads. I just want to have the most fun I can why I wait about a yr to do the STI block and heads. Like you told me before driving these cars around turns is where most of the fun is. 1/4 mile times are nice to brag about along with high dyno numbers but if it does not go on the street why bother To each his own.
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Old 06-08-2003, 03:11 AM   #15
Midwayman
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dont really know about the size difference, but its all about the flow. Compressor maps will even tell you more of the story though. There is also compressor efficiency to worry about. Ideally you want the planned on flow ranges to cross the sweet spot on the compressor map at the Pressure ratio you're using.

t3 vs to4b compressor, the t04b is going to flow more air at the same pressure in most instances Id imagine. Id really have to see the compressor maps to have a better idea of what specifically to expect.

I just know that if you buy a t3, it wont get you where you want to go power wise. It would be a shame to see you buy a turbo that wont get you to your ultimate goals.

Things you can do to improve spool up
1) bigger exhaust (3")
2) bigger downpipe (3")
3) BB center section (spendy)
4) ceramic wheels (spendy, and I dont know how much it really helps)
5) more timing down low. (get that exhaust energy going!)
6) Heat wrap/ceramic coat your headers and uppipe. (less heat escaping means more exhaust energy)
7) Boost Solenoid. Supposedly Electronic boost control can improve response as there is no partial wastegate articulation.

Thats about it... any other ideas?
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