GT30r revisted

[Ronin17]

So my last thread about the GT30r didn't go so well, so I thought I would chime in with a small update about the GT30r.

In the end my spooling problem came down to a wastegate issue that I solved by adding a large amount of preload to the arm to keep the flapper from blowing open on spool up. I am happy to say I now get ~20 psi at 3600 RPMs.

I have to say I am really happy with the performance of this turbo on pump gas so far. I knew I wasn't going to be getting a pump gas king like a 50-trim when I bought this thing, but so far it's pretty good.

I ditched the S-AFC/Pocketlogger combo and went for DSMLink V2/Innovate LM-1 combo and I have to say they have been the best investment I have made yet.

So far I have the car tuned for 11.1:1 AFR at 20.6 psi. I am seeing a max of 35.7 lb/min with a stock head/cam/intake manifold, so I am pretty happy with that. I am going to keep tuning and see if I can run 22 psi without any major knock and see what kind of airflow I can get with this thing.

Would I recommend this turbo to everyone? Well I love the turbo, but I would like to see the install be a little more of a bolt on job. I mean you really have to beat up your water pipe to get this thing to fit. I kind of wish SBR could have cast a TH that would let turbo's like this with a large CH fit without a lot of modifications to the water pipe. I also had to remove a eye bolt for the water source on the block and tap into another source, but again a TH that moved the turbo away from the block would solve that issue also.

Even with those small issues, I am very happy with this turbo and would say go ahead and get one if the two problems I described above aren't really a big deal to you.

Oh and be sure to get a external gate with a turbo of this size, it will definitely make your life a lot easier in the long run. I will probably be going with a o2 mounted external sometime in the future.

You can thank hurricane Ivan for making me bored enough to write out this review,

 

[Kevin Jewer]

I'm not sure I would try to gain more clearance in the turbine housing, since that would affect the way it behaves. SBRs new cast manifold does space the turbo out further, might have tried that piece and sell the other mani to recover some of the cost. Either way, glad to see its spooling up where it should now.

 

[Ronin17]

I'm not sure I would try to gain more clearance in the turbine housing, since that would affect the way it behaves. SBRs new cast manifold does space the turbo out further, might have tried that piece and sell the other mani to recover some of the cost. Either way, glad to see its spooling up where it should now.

Good point, but I just assumed that if FP can cast a TH that gives you plenty of clearance, then it can be done with good results.

What do you think about the airflow I am getting? I am not sure if it's normal for this size turbo. I need to search to see what some people are getting with the FP3052 at 20 psi on stock head/cam/intake manifold.

 

[super95awd]

I do have cams but I was still on the stock head and intake manifold seeing 40.7 lb/min at 18psi on the 3052.

 

[Ronin17]

I do have cams but I was still on the stock head and intake manifold seeing 40.7 lb/min at 18psi on the 3052.

Do you happen to remember what the temperature/altitude was when you logged this? I really need cams, looking forward to reading some reviews of FP's new cams

Also, is there a equation for how much airflow you loose per 1000ft of elevation? Thanks.