Pt6266
 

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... :suspect:

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

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.:)

i also heard precision isnt using turbonetics parts anymore.. now they are using chinese parts..yikes...

^ where did you hear that from?

Probably from the same people who think rotas are held together with super glue. And for the record, there's nothing wrong with Chinese parts. You're using chinese shit all the time. People need to get over this shit that American made parts are inherently better.

never said it was a bad thing .. just stating what i heard .. no need to be defensive .. this is a public forum . public sharing of knowledge..

No one's defensive about anything. I was just making a point. You did in fact act like using chinese parts was bad with the statement "yikes."

E85 is pump gas.

how did i in fact say chinese parts r junk.. ? duhh

The gas station near my house doesn't have it, the gas station near my work doesn't have it, the gas station I randomly stop at on the highway might have it.

Just because it comes out of a pump doesn't make it fall under "pump gas". It's an alternate fuel.

Fair enough. So then does it qualify if the OP was from the midwest or southern states where its found everywhere? :lol:

I'm just busting your chops.

You sort of did imply it when you said yikes after saying Chinese parts. Yikes doesn't usually imply anything good about anything.

Yeah, I was on the fence about whether you were serious or not :suspect: :lol:


Ehem... I beg the differ. Please see the below example:

*stares at hot 'rican in yoga pants*

"Mmm-Mmm-MM!! Would you look at dat ass? The things I would do... She'd hurt me. Yikes!"

:lol::icon_tup:

Yes but Chinese auto parts and a bad ass boricua in yoga pants are two different types of yikes. But I got you, well played.

I am gunning for 360-380hp off the bat with stock ports. I'll port it when i have to rebuild it. I have absolutly no idea how much boost i would need to run to make that kind of power with either turbo. From your post sounds like there's more potential going with the 6266 billet. Im just wondering how much boost i can run safely. I guess I'll find out on dyno day.

Thank you. Jesus.

Potential doesn't mean that its well suited for your intentions. 6266 has enough compressor flow for over 600 HP. I'm not saying that its oversized, but for such power levels, you would be better with something smaller, like 5558 or 5862. Or traditional Garrett's T04E 57/60 trim.

You can run any boost level safely, its whole combination of tune, fuel properties, charge temperatures and possibly flow rate of internal coolants (WI) what matters. But your power levels should be reached at less than 15 psi.

If I had to choose between a 3574 and a 62/66 more often than not at this point I will choose the 62/66. This is for one simple reason, the 66mm turbine wheel is just a better turbine than the older P-trim type wheels from Garrett.
As for the "billet" compressor wheel not being needed at lower boost levels I would tend to agree, there is no need for a "billet" compressor wheel when compared to the 35R cast compressor wheel of the 3574 you wont net any real benefits, however the gain on the turbine wheel makes it worth it and you're not getting the 66mm turbine on a cast wheel.

You should be able to hit that power level around 14-16psi. I wouldn't run a smaller turbine wheel than a 62mm. I wouldn't run the 58mm compressor unless you only want 360-380whp on pump gas and are focused on response. If you plan to port the engine in the future forget it.

The newer turbine wheels are not billet wheels they are still a cast wheel just newer aero.

~S~

So which turbo is the winner?

Neither, both work well and both do good, on a well sorted car the 62/66 has a edge flow wise and a larger operating envelope. Response is pretty much identical and price is not a issue as both are pretty much identical there as well.

~S~

From what I've read/heard you get more bang out of the 6266 and if you were looking for big power then you should go 66. However, everyone has pointed me to the 35r originally. Only one person told me to look up the 66.

35R's are a good solid performer, they are limited in sizing options however when compared to similar turbo's, that said a 3574R is not a 35R. The 66mm turbine have shown as much as a 40hp improvement over the older P-trim wheels, personally I don't think for the lower boost levels most RX7 guys run you will see that large a jump (40hp) over the older P-trim. If you're choosing between the two your best bet for a larger overall performance envelope is going to be the newer 62/66.



~S~

Thanks Zero

Which has a quicker spool? I'm not going for extreme power so I don't care too much about max power output just yet. Shooting for about 380-440 on 91

Honestly they are very close to each other it wouldn't be a noticeable difference on a apples to apples comparison. In theory the the 62mm billet wheel is lighter and according to some people they noticed a difference when switching from the older 62/65 to a 62/66. I would assume it would translate even more so when going from the older P-trim to the 66mm but honestly you personally wont likely see anything noticeable as far as difference in response.

~S~

I've been running the 6265....it meets and exceeds all criteria. I've had it on the dyno and it did exactly as expected.

Sorry to bring an old thread back but im looking to make 400 on 15psi and maybe 500 on around 22-25psi. Im really looking at the 6266. Good choice? or should i go with something different.