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Old 01-27-2011, 01:00 PM   #1
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Default Stock skyline r33gtst turbo?

Yesterday my friend told me he could give me a deal on his recently replaced r33 turbo, it is a hitachi turbo comparable in size to a gt2860, slightly bigger compressor wheel i am told. The thing that makes me nervous is that it has a ceramic turbine wheel which is said to only be good to about 14psi, should i let this scare me off a good deal? he wants 250$ for th turbo and a jackson racing fpr. On sr20s people use these turbos and typically make about 300whp at 14psi, the turbo also comes with an elbow on the turbine side which looks like it would work fine with my manifold configuration. Does anyone have any knowledge of these turbos or good/bad experiences which could aid me in my decision?
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Old 01-27-2011, 01:17 PM   #2
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I had an upgrade of this turbo I believe. The hks gt2535. specs were similar to a gt2860 I believe, but it was ball bearing, so not sure how it compares, but I loved it. It hit HARD at around 3200-3500 and held boost all the way to redline. I ran it on a bunch of settings from 8psi all the way to 14psi. At 14 it felt like it was finally hitting its best efficiency range because the power increase was BIG from 12psi.

I doubt you'll make 300whp on 14psi, but a goood 240 should be do-able.
Just my .02
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Old 01-27-2011, 01:20 PM   #3
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It'd be m4d-tYte JayDeeEmm, what more could you ask for?

I have nothing useful to contribute to this thread.
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Old 01-28-2011, 12:38 AM   #4
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If it's in good shape and it looks fine I'd see no reason to not buy it.

Now on another fact, I was working on this guys MR2 turbo (doing a full motorswap), and he had some aftermarket ceramic wheel turbo. Well he wasn't making boost, so as we took everything off the old motor I remove the turbo and suddenly realize why he's making no boost. The turbine wheel (exhaust side) had completely sheered off. It was funky
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Old 01-28-2011, 10:23 PM   #5
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^thats what people say happens to these at over 14psi it gets too hot and the stuff they use to hold the wheel on fails.
was you turbo a t3 or t25 flange? this one is t3 off the single turbo car not the gt25 ball bearing off the twin turbo cars. I am just waiting for his final word i told him id go ahead and pick it up because for that price i dont mind experimenting. I also was thinking about making a pipe to bolt to the stock manifold turn around and put the turbo flange like right on top of the manifold 2 tabs right there to brace it, im kinda surprised no one has done this. One of my prev cars was an e30 and everybody used stock manifolds with a bend coming back up to turbo flange, it worked great and was very cheap.
Also if i made 240whp i would be tickled to death, i have stock tranny and a 1.6 vlsd so im not trying to make anything over like 225 really and even then i wonder if the diff will hold up to 2-3 shifts. I already broke my open 1.6 diff on a 1-2 shift.
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Old 01-28-2011, 10:33 PM   #6
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It wasn't my turbo or car so I'm nut sure what flange was on it. I was just tasked to take it apart.

As far as using the stock manifold, I wouldn't do it. A proper designed manifold is cheap enough, or go on ebay and get the cast manifold for cheap and make your own downpipe.
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Old 01-29-2011, 02:58 AM   #7
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if it was a 1.6 it would be no problem or if the turbo was a t2 it would be no problem but the only available manifold with t3 flanges are either custom or like the begi tubular which is wayyyy overpriced for what i want.
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