firstfirebird

iTrader: (3)

Ask and ye shall recieve...





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The intake wheels measure 1.858/2.370 and that seems to give them a 60 trim.
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The exhaust wheels measure 2.008/1.819.
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The intakes housings are .48 and .63 exhaust.
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They were being used in a 300ZXtt and came out of the Mitsubishi Eclipse Spyder.
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The markings on the intake housings are:
A/R .48 1-2
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The markings on the exhaust housings are:
.63 H4 on one side and 687 97J 272-2 on the other.
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The tag on the bearing housing reads:
TJ 0190J
11411-40P04
466195-2
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on one and:
SH 0447J
11411-40P01
466079-1
on the other.
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Thanx for any help!

firstfirebird

iTrader: (3)

Dave, here is some pics of the cracks in the wastegate port I was telling you about...

I used a pecil to point them out in case you couldn't see them in the picture...

firstfirebird

iTrader: (3)

N E 1 ?

firstfirebird

iTrader: (3)

I found what I believe is the map for these turbos:



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You can find it here along with a bunch of other maps for all kinds of turbos:

Click here for turbo maps

vwdave

Dont ask me about turbos, I am not exactly a expert. I am just a slightly knowledgeable moron.

Also, this is a map for the ones I have. I think they would be well suited for a Tutbo project like yours. Mine should be good to 400-450 or so. (With both obviously)

http://not2fast.wryday.com/turbo/maps/t3-60.gif

firstfirebird

iTrader: (3)

If your sure you have t3's, which 300zx did they come out of? Are they a factory set-up, cause all the 300zx's I've seen hade these t-25's like I've got.
How much do you want for them?
Those are capable of (each)361.8cfm @ 33+psi and still be at 74% eff.
Mine will do (each)289.44cfm @ 30+psi and only be at 70%eff.
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Dave, these might be more what you are looking for!

daves12secV6

iTrader: (3)

nope i still think those are gonna be to small,looks like im just gonna stick with the twin t3/t4's.there slightly large for my motor,but id rather have slightly large then to small

firstfirebird

iTrader: (3)

That won't be a problem since your looking for low RPM boost?
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EDIT: Now you will be dividing the gasses going to the turbo in half, essentially wouldn't that mean smaller would work in your favor?

daves12secV6

iTrader: (3)

its not the spool im worried about,the fact is i maxed my t04 @ 16-18psi moving 43#'s of air,those t25's and t3's together on flow slightly more then the t04.

firstfirebird

iTrader: (3)

As you said though, you've maxed out the t04. I know for a fact that the turbos I've got were pushing 25+psi on a bored 3L.
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If you were reaching the max on the t04's, wouldn't you be out of their eff range? The numbers given on both VW and my Garretts, were in their PEAK eff range.
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What's stopping you from buying a Garrett t3/t4 that's going to be able to push your motor past 25psi, these turbos we've got just aren't the same quality.

daves12secV6

iTrader: (3)

psi means nothing,its how much air they move,i didnt mean i had the turbo completely maxed,but any increase in boost over 16-18psi netted almost no gains in hp,psi wnet up but efficiancy droped.
that was on the old motor
now the new engine has heads that flow 60-75 cfm better then the old heads,beteer cam and a much better intake.which means im gonna need something capable of moving more air
the only reason im not buyying a new turbo is cause i can just buy a second t04 pretty cheap,and if i did buy a new garret id just buy one large single turbo

firstfirebird

iTrader: (3)

How mwny CFM do plan on pushing with the new motor?
Do you know the HP vs. CFM formula?

junkcltr

iTrader: (1)

The A/R on the turbines of the T3's that VWDave has is the same as the T4/T3 hybrids you have now. The T04E compressor you have is better for the HP you want to have (assuming twins). From a comp. map and turbine point of view, you are better off doing what you planned on doing. That is, two T04E comps with T3 turbines.

vwdave

Yes they are t3's. They are too small for my car since I have a L98 with a set of AFR's.

These came off of the Z31 single turbo 300zx. I believe they are off of a 87 and a 86. No shaft play, spins very well. They have a .63 ar.

They ones you have, are off of a Z32 twin turbo which uses 2 t25 (m24) turbos.

firstfirebird

iTrader: (3)

I'm still confused . Doesn't that still mean each turbo is going to recieve HALF the gasses and heat?
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And the A/R is also the same on the m25'S, just a little smaller (.63).
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Does anyone know if I could put larger turbines on the t-25 (m-25)'s?

vwdave

Thats typically the idea with twins. Each turbo is spun by a bank.

.63 AR.

Dont know. Only 1 way to find out.

firstfirebird

iTrader: (3)

But is what I am saying is wouldn't half the gasses/heat cause the turbo to rotate slower?

vwdave

Yeah, but typically you use two smaller turbos that do not need as much gasses/heat to rotate.