I am a month away from starting the procement of goods for my single conversion. I was looking at the A-spec gt3574 kit; now i've have also read about the PT 6266 Billet turbo. What do you guys think of these two kits here? Anyone here run either of these turbos? I really want to hear your opinions.

Thanks

 

I was in the same boat as you.
Visited with Sean and he pointed me towards the PT6266.

I was up in Rogers, MN last week for dyno tuning with Elliot from Turblown, but developed an oil leak on the front cover and didn't get a chance to push the car.

I am hoping for mid 400's on this setup.
I have an Aeromotive 340 stealth pump, stock primaries, and ID2000 secondaries with a medium street port.

I would like other guys feedback also on what kind of numbers they are seeing with the PT6266.

 

a local guy pushed his 6266 to about 420+ whp (I don't know the exact numbers) at 25psi on pump gas and blew it up shortly after.

so the turbo is capable of 400+ on race gas, but this guy was stupid trying to do it on pump gas.

 

The 6266 should be way more capable than 420whp at 25 pounds. That's way low. I'll be building a full turbo kit with v mount setup on an FD shortly using one.

 

The 6266 is a 500whp+ on 25psi. Turbo can be pushed up to 32-33psi. Indeed the guy who pushed it to 25psi should have made 500+ at that boost level.

Im building but with a PT 6766, started work today. Should be all done by friday/saturday. I'll post results

 

it's not exactly 420, my friend who was there just told me it was going pass 420hp @25psi ,the hp was still going up but engine blew up.

 

I talked with Sean too, very cool guy. Are the ID2000 the way to go? I was thinking bosch 1680cc and keeping my stock primaries for idle purposes. Was it a precautionary move to go with the 2000; to keep an efficient duty % and not overtax the injectors. What are your boost levels at?

Thanks

 

I made 470whp at 19psi on my PT6265 with a PFS streetport. I was also running post-IC water/meth injection and running (old style) 850/1680 injectors with plenty of fuel left.

I made 404whp at approx 13psi and no water/meth injection with that same turbo.


I'm a very big fan of the PT6265/6266 and Sean @ A-Spec is a damned good guy to get the kit from!

 

That sounds like exactly what you should have seen.

 

The nice thing about the ID2000's are not having to mess with resistors.
I had a 850/1600 setup previously and the 850's are a pain as a primary.
Went back to the 550's. But the ID2000's are the way to go.
Heard that some guys are able to actually run them as primaries because of the better control.

Since my dyno tune didn't go as planned I wasn't able to push the car because of an oil leak that sprung up.
I am hoping to be in that 20-23psi on the high range, but don't know if I will have the fuel pump to do it.
I am running the Aeromotive 340 stealth.

 

6765 @ 20psi with a lot of post turbo meth, on a small streetport. Ran out of ignition power or would have gone higher...

I think the 6265 or 6266 is going to take at least 23psi to hit 500rwhp, probably 25psi..

I've got a few more of those to tune, but not at high boost...

 

Hey Elliot,

What kind of boost range to think I will be able to push with the 550/2000 and 340 Stealth pump? Trying to guage an idea for my next trip your way for dyno tuning.

Thanks, Josh

 

simon your mother was stupid trying to push it on pump gas, haltech had the installation manual wrong for the timming wires.
pump gas woont break any engine, there are plenty of 800hp+ lambos running pump gas


pt6266 spools quick, i think you can make 500hp at 28-30 psi, talking to halltech these days to figure out the problem
after oso tech tuned the car i made about 440hp on a dyno jet, oso still cant figure out the timing so i believe if he cant figure it out who can

 

How does the PT6266 compare with the spooling of a standard GT35r?

 

I highly doubt that people are running ID2000's as primary injectors with pump gas while maintaining high efficiency. On E85 sure, but not on pump.

Personally I wouldn't want to go any higher than 1000's in the primary position.

 

Gotcha. Thanks for the clarification on the E85. Wasn't completely sure on that.

 

Anybody else running the 6266?
Curious to see what kind of numbers guys are making.

 

^ I'm guessing they would be very similar to the numbers run by the 6265 crowd since Precision released the 6266 as a direct replacement for their 6265's.

 

Should be pretty close except that the billet CEA turbine wheel will make more power.

 

IIRC, the 6265 was/is a billet wheel as well, unless I'm thinking of something different.

 

The compressor wheel is yea. With the 6266 the turbine is also the billet cea design = more power/ faster spool.

 

Oh, well badass!!! Hehe, maybe I'll have to look into picking up a 6266 over the winter than...

 

So does everyone agree that the pt6266 is a better route to go than the gt3574??

 

I wouldn't say that's the case.

Garrett is a pretty tough company to bet against when it comes to turbochargers.

 

We know that Precision's billet 62mm compressor has much higher peak flow than Garrett's 62mm cast wheel. But we also know that Precision units are producing about the same or less power at "normal" boost levels as comparable Garrett units, what indicates, that efficiency at lower flow rates and pressure ratios is probably lower.

IIRC smg944 posted very interesting numbers. When he started tuning his billet 6765, at lower boost levels, he was producing less power for given manifold absolute pressure than with standard GT35R 1.06 A/R. But then he realized massive power gains at higher boost levels even with marginal increase in pressure.

So far, you didn't mentioned any intended power or boost levels so its impossible to make any judgement about what would be superior for intended use.