GT35R vs fp3065

[zilo900]

What's a good turbo for mid 12's on pump. A AMS fifty trim or 16g

 

[nanokpsi]

First of all, both are great turbos/companies. Since you are going with the AMS kit, both of which also run the stock manifold (AMS uses an adapter plate IIRC). It's also worth mentioning that both turbos will meet your goal just fine. Ultimately, the the 35r will support more power with the bigger hotside (.63 t3 is the way to go on a 2.0) and larger turbine wheel. That also means that the 3065 will spool a little bit better though, so it might be a trade of for you if thats what you want. It's not a 500rpm difference or anything though. The 35r will also go a little bit better on pump gas due to the larger hotside meaning better volumetric efficincy.
If this is your first "big turbo", both units will seem laggy anyways. You'll get used to it pretty quickly though.

Hopefully that gives a little more insight into what you want to do. I think both are great choices so I'll leave it at that as to not step on Robert or Martin's toes. Good luck!

Nathan

 

[Shearer]

They are both great turbos. In my experience the 3065 is limited to about 600whp and the 35r we have seen nearly 670whp. However the 3065 is going to spool up slightly better than a 35r.

 

[Steve93Talon]

Ultimately, the the 35r will support more power with the bigger hotside (.63 t3 is the way to go on a 2.0) and larger turbine wheel.

It was my understanding that the FP casting is comparable to a .70AR T3 housing. I'd think you would have to do the .82 to make it worthwhile. Also, if you want to take advantage of the GT35R's bigger turbine wheel, FP has an unlisted FP3565 available which is essentially a bolt-on 35R. If you do decide to go full garrett, why not spend a couple hundred bucks over the cost of the DNP and get a Shearer manifold or something?

 

[nanokpsi]

It was my understanding that the FP casting is comparable to a .70AR T3 housing. I'd think you would have to do the .82 to make it worthwhile. Also, if you want to take advantage of the GT35R's bigger turbine wheel, FP has an unlisted FP3565 available which is essentially a bolt-on 35R. If you do decide to go full garrett, why not spend a couple hundred bucks over the cost of the DNP and get a Shearer manifold or something?

You can't compare ar's like that. The only way to truly do it would be a back pressure test with both the hotsides. I am going by the power I see being made on the different housings and the boost it takes to make the power, especially with the 3575.

Zilo, if you are going with a t3 manifold, then you don't need to worry about the Fp stuff as it is based for a mitsu flange.

 

[jo1]

GT4088 will be another option to consider whether it BB or not.

 

[brute]

The Garrett GT3082R and GT3582R both flow 65lb/min. I believe the only difference in the wheels is the GT3082 uses the GT30 turbine wheel, while the GT3582 uses the GT35 wheel. Same with FP turbos. The FP 3052 is a GT30 that flows 52lb/min. Then, when you step up to the FP 3065, it uses the 65lb/min compressor wheel, but the GT30 turbine wheel. The FP 3565 has a GT35 compressor wheel, with a GT37 turbine wheel. Hope this clarified rather than confused.

 

[4wd-Eclipse]

The Garrett GT3082R and GT3582R both flow 65lb/min. I believe the only difference in the wheels is the GT3082 uses the GT30 turbine wheel, while the GT3582 uses the GT35 wheel. Same with FP turbos. The FP 3052 is a GT30 that flows 52lb/min. Then, when you step up to the FP 3065, it uses the 65lb/min compressor wheel, but the GT30 turbine wheel. The FP 3565 has a GT35 compressor wheel, with a GT37 turbine wheel. Hope this clarified rather than confused.

The FP3565 is GT35R in FP30 TH not listed in FP site (cost about $1650) where as FP3575 (NOT FP3565) has a GT37 turbine wheel.

 

[tstkl]

I always thought it was more along the lines of this:

3052= 30r compressor wheel/ 30r turbine wheel
3065= 40r compressor wheel/ 30r turbine wheel
3565= 40r compressor wheel/ 37r turbine wheel
3575= t67 compressor wheel/ 37r turbine wheel

but I could be wrong. www.turbobygarrett.com deffinatly disagrees with your statement of "the 30r and the 35r both flow 65 lbs/min", as neither of those compressor maps touch 65 lbs/min, while the 40r does.

 

[Verticaljump1]

I would hands down go with the full garrett GT35R with the .82 a/r housing. A tad more lag than the .63, but I think it's worth it. I think going to a full garrett set-up now will save time and money in the future, you have a ton more upgrade options. I like the 3065's v-band, but for the cost of a 4-bolt flange (3") and a v-band flange (3") and $20 spent towards a welder you could have a v-band adaptor, making the install even easier. There are other options, you could go with a dual BB PTE SC61 in a T3 housing with the T350 wheel, and make damn close to what the 35R could make, for a tad cheaper (I think extremepsi had them going for $1150?). The FP3565 is a GT35 turbine and GT40 compressor, not the GT37 btw...

 

[zross1]

If your going to be running a T3 dnp manifold then the choice is clear, 35r. The 3065 is a great turbo, I just think the hot side/turbine wheel is too small. I went with a 35r T3 .82 and I love it. Top end is just undescribable.

 

[4wd-Eclipse]

I recommand you full garrett GT35R with the T3 .82 a/r housing.

 

[brute]

but I could be wrong. www.turbobygarrett.com deffinatly disagrees with your statement of "the 30r and the 35r both flow 65 lbs/min", as neither of those compressor maps touch 65 lbs/min, while the 40r does.

I was saying that there are variants you can get. They are classified as such, so they're in the same family:

GT3076R...52lb/min
GR30R......55lb/min
GT30R......60lb/min
GT3082R...65lb/min
GT3582R...65lb/min

It's just a difference in wheel combination. Just like FP turbos.

 

[brute]

With either turbo, you're going to need to be revving moderately high. Is your head built to handle that? If so, I'd say get the 35r.

 

[dalatinromeo]

I have been thinking the same thing GT35R or FP3065. After much thinking I'm thinking I am going GT35R.

Anyone have reasons besides slightly better spool, and bolt-on???

 

[nanokpsi]

I always thought it was more along the lines of this:

3052= 30r compressor wheel/ 30r turbine wheel
3065= 40r compressor wheel/ 30r turbine wheel
3565= 40r compressor wheel/ 37r turbine wheel
3575= t67 compressor wheel/ 37r turbine wheel

but I could be wrong. www.turbobygarrett.com deffinatly disagrees with your statement of "the 30r and the 35r both flow 65 lbs/min", as neither of those compressor maps touch 65 lbs/min, while the 40r does.

definately wrong

http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT35/GT3582R_714568_2.htm

Everyone sayd the 35r wheel flows 65 lb/min, when it is listed ot only flow 62. That is the 56 trim wheele used in the sc61, 3065, 3037(HKS),etc. Some refer to it as a "gt40" wheel as well. If it's a 61mm, 56 trim wheel, that is the wheel.

The gt40r wheel (4088) actually has a choke flow of 72lb/min and is more comporable with a t67 wheel.
Also, the 3565 is just a 35r in FP's housings, so it uses the 35r turbine wheel.

 

[nanokpsi]

Ok after talking with a few owners of gt35r's and gt40r's I think now that I will at least be going with the gt35r. I was advised that the 35r would be better to have on the 2.0 and the 40r would be better on a 2.3, for mainly top end.

If there is any input between these turbos now it woud be helpful. I really want this to be the last turbo I buy, and its main purpose will be for drag, and straight line fun.

Stick with the 35r. I like the 40r's performance, but still don't see the point in getting it in favor of a bb t67, which is cheaper, easier to package, higher power capability, etc).

 

[brute]

I agree. You won't need more than the 35r. Plus, your head looks to be built well enough to handle a very high shift point. That's always good for big turbos.

 

[4wd-Eclipse]

I'm also planning to go full garrett GT35R with the T3 .82 a/r housing next year ... I'll get the turbo either from FP or APTturbo ... before that I'm going to put my 2.3 stroker block and FIC 1000cc or 1150cc injectors.

 

[PSI NRG]

Im running a 37r its got a t67 compressor wheel and a .82 exhaust wheel spool isnt bad at all top end is jato rocket fast