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The guy I got the turbo from is willing to buy me a new shaft. I just need to know the part number for the shaft. Does anyone have any idea?

If its gonna cost me another $200 - $300 to fix, ill pay that. I cant just throw $800 away(thats what it cost me). At the time we both had no idea the wheel was damaged.

Ive been in and driven my mates r33 rb25 with gt3082 .63 on 19psi and its nothing short of fkn wicked.. pulls hard cooks tyres .. 290rwkw. Enough said.

Is it internal or externally gated? Im guessing its external? You'd have a pretty hard time contolling boost with such a tight rear hsng and piddly internal gate.

I thought you already had an external gate ready to go? Whats sort of gate is it? Get someone to weld a flange to your stock manifold as pictured on the page previous...it will work if the gate is big enough...contrary to what Mr High Horse would have you believe, seems there are plenty of people out there that have made this turbo work, including a mate of mine who had the 0.63I/W on his series RB25, made 280rwkw on 18psi, only problem was he couldnt keep boost below 18-20psi...hence my post above...go the external if youre staying with the 0.63 hsng.

Ive got a 44mm tial. The guy I bought the turbo from is helping me organise a brand new one! He also said he will get me one with a .82 rear if I like. I will go with this option and keep it internal. With a bigger housing, the gate should be able to flow enough through to keep boost constant. If not, Ill get the actuator rod locked rather than the flap welded and have a secondary manifold with a WG flange as suggested previously.

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  • Latest Posts

    • GCG is a good company, they're a major distributor for Garrett in Japan as well.
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    • I've never heard of CJ-motor, so can't advise you on them. I'd just go straight to GCG for a GCG highflow though. Seems no point to use a middleman. I'm somewhat surprised that the price on the CJ site is lower than the GCG retail price. Even though CJ would get a discount of some sort, you would hardly expect them to give up so much margin. Maybe the price is out of date? Having said that "I'd go to GCG"...when I did my highflow, I went to Hypergear. I did this https://hypergearturbos.com/product/rb25dethighflow/#tab-dyno-results with the R34 OP6 450HP profile. With the BB centre (extra $400) and intially with the standard boost actuator, but I eventually got him to send me the high pressure one when I got to the point of being able to actually use it. Ends up costing the same sort of money as the GCG highflow, but this is, of course, the turbo that I KNOW has a shorter length core and so moves the comp cover rearwards. The GCG apparently doesn't do that. My mechanic also swears by the GCG highflow, given that we have another turbo rebuilder who does something essentialy the same as theirs, using Garrett wheels. He says it stands up at really low revs and makes good power. I haven't pushed my HG highflow past ~240-250rwkW yet (should have a little more in it, but unclear how much) and it does have a fairly gentle boost ramp. OK, it's much better now that I have gotten my boost controller tuned up on it.  A lot of my earlier unhappiness was because I couldn't keep the wastegate flap as closed as it needed to be (including some mechanical issues). I'd still prefer it to boost up nearly as quickly as the stocker, and it certainly a bit slower than that. So maybe the GCG one is worth the first look (for you).
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