Anyone running a garrett t3/t04 50 trim - .63 ar on a RB25

[virus77]

I got a really good deal on new t3/t4 50 trim .63 a/r so I picked it up. I just wanted to see if anyone has any experience with this turbo on a RB25. I actually had this same turbo in my KA24det back in 2004 and it was an awesome turbo so I was thinking about slapping it on the RB-Z and seeing what its made of. My plans originally were to get a gt30r which I know would kick a** but I'm open to using the 50 trim if its not gonna suck on the RB since I got it for cheap.

The car is quick as it running a stock turbo at 1 bar, my goals are realistically 350whp daily - 400whp max for the occasional exotic car battle. In such a light chassis it should make for a fun car at the button and willow springs, my two local tracks which most of my enthusiastic driving is done. Currently the car is running a z32 mafs, nistune, 525cc injectors... all the supporting mods are there. Anyone running one of these turbos that can tell me how much power they made, spool times, anything?

[krayton]

im running a t3/t4 .48ar and its super super fun.

instant response, especially compared to my 60-1 i was running.

at 1.5 bar we got it to 340 to the wheels. wouldnt expect 400 out of it (mine)

[virus77]

I was hoping for ~350whp at 1 bar but I guess thats a bit optimistic lol

What trim are you running? and was that one 91, 93 octane or something else.

[ItzGenX]

What exhaust wheel do you have in it? If you got the T350 wheel (aka stage 5 wheel), it should be able to see 400 hp on a T04E50trim/T350 .63ar. My old SR turbo was just that, and it made 413hp@21psi before selling it for something bigger.

[virus77]

Sadly its a stage 1 wheel, my KA had the stage 3. Hopefully this turbo doesn't end up disappointing me but in all reality it has to be quicker than the stock rb25 turbo so i should be fine... i hope.

[streeteg]

VIrus--- you and I are in the same predicament--- and i have considered that exact turbo cause of a deal by me on the east coast. But for as nice as your build is I would say ditch the bottom mount and finish the bay with a bigger more well rounded setup then the t/3t/4.

So at the minimum if its not gated youll have to pull your manifold off and get a gate welded onto it....plus the price of the gate--- and im not sure the size of that turbo but you also may have to run a T/3 spacer...

If price was really a concern-- there are guys running the ebay top mounts which can be had for 100-200 bucks, a holset hx35 for 250-300 and for marginally more money-- or in my opinion the same-- you have a nicer (looking) setup with good results for both power and powerband.

In just another post below someone posted 423whp and a decent torque curve for the hx35. The only thing i would be weary of for you is if track use would be enough abuse to crack manifolds quicker.

Anyway for me--- I passed on the small turbo(despite the deal) for the top mount setup because I had the same goals you did and for the hassle it just wasnt enough gain. I picked up my top mount for 70 bucks and got a holset hx35 for 250 shipped and am going to pick up a tial 38mm. My goal is under 500whp for under $500 bucks. We will see

-E

[virus77]

I feel you, I really wanted a GT30r but I couldn't pass up a deal. I build tig welded manifolds so it wouldn't be an issue to make me a nice topmount. In the end though I want to stick with the factory bottom mount, I like the way the turbo looks nestled under the motor like a running back holding a football lol. Plus they are reliable as a rock and the turbo is internally gated so I'm just gonna go ahead and slap it on next week, weld up a new dpipe and see if I like it.

Ill post back with how I feel about it, If my lines and everything are done I should have it running by the end of next week

[dori_fc09]

hey let us know how the .50 trim works on the rb25... i myself got a master power .50 trim that i want to run on my RB with the same hp goal your going for. not looking to change the manifold and see about welding on a waste gate to the stock mani and call it a day. post some pics when its done so i can get a better idea on how its gonna look. thanks bro

[l0nestar]

... you *do* realize that the last reply to this thread was OVER a year ago, correct?

I don't recall what Virus is running now.. I would PM him and ask.

[dori_fc09]

ya i saw that after i posted, just thought to post on this one instead of making my own. trying to get feed back but ill pm him and see if he is running it. thanks bro