LET'S TALK TURBO'S :-)

[240booster]

OK Im seriously starting plans for my KA24DET and i want to learn everything about turbos that i can. I think im goin to try to build my own set up for $$$ purposes, so im looking for info mainly on the different types and sizes of turbos. T4/T3/T25/T28/T66?? What do they mean?? How R they sized?? What is the best turbo setup for our KA?? Plus, any info on ball bearing turbo's would be kewl. Also, I'm thinking about goin with a boneyard boost so what cars could I find in the junkyard that would carry a good Turbo for my KA?? Finally, Just Post up ne other general information about Turbo's u think would be helpful please. Try to keep it factual and not based on opinion please. THANKS A TON GUYS!!!! :-)

[DSC]

<a href="http://www.howstuffworks.com/turbo.htm" target='_blank'>http://www.howstuffworks.com/turbo.htm</a> I saw a thing on how they work a while back but thats probably not what your looking for. Besides how they work I don't know much about them.

[crazycuban]

on sizing - different turbo companies have different names for their turbos. for example, garrett's sizing goes, from smallest to largest, T3, T04, T51, T61, T64, T66, and T72. Those are, of course, non ball-bearing turbos, and the sizing is different on those. Turbonetics, as well as most OEM turbo cars use Garrett turbos. HKS uses Garrett as well. I'm sure you've heard of the HKS ball bearing turbos. Sizing on those goes GT2510, GT2530, GT2535, GT2540, GT2835, GT3037, and GT3040.

Greddy uses Mitsubishi turbos - sizing goes from TD-04, TD-05, TD-06, then T-67 and T-68, and T-77 and T-78.

Apex uses IHI turbos, which I couldn't find the sizing of.

A basic rule is that a bigger turbo will flow more air, allowing bigger horsepower, but because the turbine is so large, it will take longer to spin up to create full boost. A smaller turbo, on the other hand, will flow less air, but have less lag (less time to spool up to create boost). Ball bearing turbos, such as the Garrett/HKS GT series, have a ball bearing that the turbine spins on (instead of an oil bearing on conventional turbos). This ball bearing has less resistance, and hence less lag is created, so a bigger turbo can be selected without the same bad effects. note BIGGER. u still can't put a GT-3040 on and hope to see very little lag.

on our cars, common setups include the T3, T04, T3/T04 hybrid (a T3 compressor with a T4 turbine, but double check, it may be the other way around), up to even T51 and T61 for drag oriented cars. the HKS ball-bearing kit for our car uses a GT2530, though I have seen GT3037s.

I hope this was useful. One good page I found in looking for shit about this was vache.org/supra/turbos.htm

edit - by the way, our car uses Garrett turbochargers too in Japan. &nbsp;both smaller than the T3, the S13 uses a T25, and the s14 a T28 - i'm probably wrong though. &nbsp;

sr20det.nismo.org/basicsofturbos.htm is good too.

(Edited by crazycuban at 7:44 am on Jan. 9, 2002)

[crazycuban]

wait...or is a T3/T04 a T04 wheel in a T3 housing?

[HippoSleek]

go to the Se-R message board (www.se-r.net??) and look for a faq that covers the waterfront on turbos. &nbsp;If you are looking for general information to build your own with, read Maximum Boost by Corky Bell.

[crazycuban]

aight, so thats what its called...maximum boost...i want that book nasty style, but i couldn't remember the name.

nice to see you're hard at work defending those corporations mark...haha

(Edited by crazycuban at 8:10 am on Jan. 9, 2002)

[NoTuchn]

for a KA, (if it was my car) i would look at useing a T3/T4 b/c of its size. not the biggest, but not the smallest. the bigger you go the more supporting mods youd have to make, so watch out for those, they tend to creap up on us.