Has anyone attempted to use this turbo in an rx7 before with the 13b? Or is anyone in the process of installing one? Im sure it wouldnt be a problem but for the sake of information, technical or experience driven has anyone ever attempted it? My friend and I just finished installing the Precision 6262 turbo from Precision Turbo into his 07 STi. Essentially a modified gt35r its still pretty intimidating to see the numbers put forth by its use in the Mitsubishi Evo by AWD Motorsports. Hopefully after a bit more research and some forum member input I will have a better answer as to whether this turbo would be a interesting route for me to pursue.

 

was going to get this for a friends rx7. I was told great spool up and powerband. Decide to go with a pt67 with a .81 housing because of more power potential at less boost pressure. Best thing we ever decided. Car hits like a bat out of hell on 1 bar

 

from what i've heard, the SC 6262 spools faster than the GT35R also avail in larger A/R for rotaries

 

these turbos were extensively discussed in this thread: https://www.rx7club.com/single-turbo-rx-7s-23/billet-turbos-whats-deal-825798/

I have yet to see controlled studies between the billet turbos and non billet turbos with the exact same measurements and specs , except this one by Garrett which found no noticeable improvement from the billet manufacturing itself: http://www.turbobygarrett.com/turbob..._Machined.html . I remain unconvinced by internet rumors and random dyno sheets, even from respected and knowledgeable people.

It's still a modified 62-1 compressor wheel and a stage 5 t3 turbine wheel to me. All the "it spools faster than this" and "it makes more power than that" internet rumors do not give detailed specs in their comparisons. We all know that you can get gazillion combinations of housings and wheels on most turbos. If the 6262 makes more power than whatever other turbo you want to compare it to, it's probably because the 6262 has a bigger wheel(s) or a bigger housing(s). If it spools faster than whatever turbo you are comparing it to, it probably has a smaller wheel(s) or a smaller housing(s). I trust Garrett when they say that the machining/billet process alone does not add efficiency. And whatever other engineering tricks Precision supposedly has used to increase efficiency have not been described in detail, as they seem much more focused on branding ("billet" this and "billet" that).

 

It would make an awesome street turbo on the 7, but the billet 6765 would be even better.

 

^ sounds like a T04Z stuffed in a T3 housing with almost a 20% markup... http://www.clubrsx.com/cr/PTE-6765-B...mpaign=froogle

T04Z http://www.atpturbo.com/Merchant2/me...egory_Code=GTB

I'm not saying this line of turbos won't make power or won't spool quickly. Frankly, I'm bothered by the [admittedly effective] marketing gimmick. It goes something like this: if a regular turbo is good, and ball bearing is better, then ball bearing + billet must automatically be best. back in the day the hype was ceramic turbos...

 

I have pushed both turbos to their limits. A Precision 6265 billet turbo will make more power than any PT67 turbo and with better spool also.
Tommorow I'm going to find the limits of the 6765 billet turbo.
Keeping fingers crossed that the AWD Motorsports Evo makes 850whp with that turbo.

Both turbos below are 76mm inducers. The one on the left is the billet version and the one on the right is the regular casted version.
It's pretty obvious where the differences are and also why the billet versions out perform the same inducer casted versions.
On the below turbos I've made 80whp more with the billet vs cast version at 35psi on one particular application.

 

Cris !! who told you you could take a picture of my 76 Turbo!! shame at you, Now I'll have to buy a new turbo!! lol

 

You don't seem to get it. It's not the fact that a compressor wheel is made from billet alone in the process of manufacturing that makes it better. It's the fact that manufacturing a wheel using billet techniques over casting allows for a stronger part, which means the fins can be machined THINNER and the center portion of the wheel (were the compressor nut would butt against) can be made SMALLER allowing for MORE area for air to be ingested into the turbo comparing a non billet (cast) to a billet compressor wheel. You WILL NOT see a difference in performance if you use the exact same aero and specs from one manufacturing process to another which is what Garrett is saying. AND NO ONE IS CLAIMING ANYTHING DIFFERENT. The only gain from machining a billet wheel over a cast if all aspects were to remain the same is the billet would be stronger. AGAIN, the benefit of billet manufacturing is an overall stronger part, which intern means LESS material can be used thereby resulting in better aero designs being utilized without the fear of fins breaking off due to a lack of strength. RESULT.... more power, quicker spool up. <---- that’s a period


There are significant aerodynamic advancements that have been done to the later model turbo's of today compared to yesteryear. Calling it a 62-1 shows your extreme ignorance on the matter. The T04B series (YES, the 62-1 is of the T04B series) is OLD technology. Even the T04E series is newer and yet still somewhat outdated when compared to the newer GT series. And now there are wheels even more efficient then the GT series (case in point, the wheels in this discussion). There are numerous details that will improve a compressors ability to move air and compress it dependant on what its intended purpose is such as number of blades, blade angle of attack, trim (ratio of inducer verses exducer), back sweep etc. These newer compressors move MORE air then the old school 62-1 and have a MUCH MUCH better efficiency and at a MUCH MUCH higher compression ratio. They are more efficient period, resulting in more power and quicker spool up. Here’s an example of old verses new that we all can relate too. The 60-1 versus the GT35R. They both have close trim specs and inducer sizes. They have really close efficiencies up to about 55~60 pounds per minute at 1 bar, but the 60-1 falls on its face after that and the GT35R wheel keeps climbing. The GT35R has a slight edge on spool up even with its' slightly too small for a rotary turbine wheel. I'm willing to bet with a slightly larger turbine wheel, on a rotary the GT34R would spool up even faster and still yet have better flow (less back pressures) and spank a P-Trim turbine (old school). So some dimwit seeing the specs of some un-known turbo sees the inducer and exducer measurements and calls this unknown turbo a "60-1 is all it is" (when its really a GT35R) would be really really off in his ignorant assessment.

This isn't internet hype or marketing gimmicks, so drop the whole conspiracy theories and get up to date! Same applies to the turbine wheels too. The newer turbines flow more, are more efficient at extracting power, resulting in quicker spool up and LESS back pressure.

There have been NUMEROUS PROFESSIONAL racers responding in this and the other thread. And Precisions' billet wheels are not simply older designs copied and then machined out of a billet slug. They are completely NEW designs using the billet process in mind when they were designed. This constant doubting or cynicism is a slap to the pro racers on this board and Precisions’ face. Go get your learn on before being such a cynic.

Last tid bit, billet wheels are NOT new. They have been in top tiered motor sports for a number of years (F1 comes to mind) and are now just trickling down to an affordable rate to manufacture and to BUY for smaller companies and individuals.

BTW, FYI I was a Garrett dealer.

These things were hinted at in the very thread you left a link for, did you not read any of it?

~Mike...............

 

Real world testing results!
818whp on a Precision Billet 6765 turbo. Let's see that happen on a regular 67mm turbo!
http://www.youtube.com/watch?v=AehC1Q3Bakk

 

Cripspeed, Do you have any dyno's of the 6262 compared to the T67? I was about ready to move to a T67 from my 62-1 but if I can upgrade to one of these billets and make the same power with a smaller wheel I say why not. Also do you know if precision is rebuilding or selling the compressor wheels only or full turbos only?

 

Awesome vid crispeed. Pretty much set on the 6262, little smaller but it will make me more than content. that 6265 is putting out some insane numbers though!!

 

RacerXtreme, you hit the nail on the head. I was going to give a similar explanation but you saved me from typing

Fritts, Precision will upgrade current turbos to the billet compressor wheels but wont sell you the parts. Its better to buy a complete turbo so you have a new CHRA, but you can go either route.

 

Chris.. Since you have the most real world experience w/ these turbos and almost all others.What billet would you say is comparable to response of a t4 35r w/ a .84 or .96 hotside. I am looking for a t4 framed precision turbo and trying to decide on the 62/62 or the 62/65. Not looking to run more than 20 psi. Looking for 400 to 450 whp on pump gas on a FD w/ streetported 13b full 3" exhaust tial 44m wastegate etc.. Gaby Skern is tuning the microtech in Orlando. His turbo reccomendations are for good power but I know will be laggy for my style of driving. Thanks G

 

What's your style of driving?

 

Road course style driving. Like to do some highway pulls now and again. Want something that gets a bar of boost by 3500 to 3800 rpms. G

 

Get a BB 6262 with a .84 or 1.00 A/R divided (not available through Precision though...)

 

Sorry to thread *****. Anyone have info. as to whrer to source this set-up or other custom billet applications. G

 

Got a qoute from awd motorsports...

 

I am in your same boat. I am looking to upgrade my T04E. I have been looking at this same turbo. I would love to see some dyno numbers with this turbo on an FD...

 

Does anyone have any solid numbers on the 6265 billet turbo, because i'm was about 2 seconds from ordering a kit from A-Spec. So far everyone all for them but are there any recommendations toward the billet 6262 or 6765.

 

62/62 for good low end response and pump gas (15-20 psi) w/ aux. injection. 67/65 slow spool but big hosepower potential and high boost application.

 

So can we say the 6265 sits in the middle of the two, or is it more of one or the other.

 

what boost levels?
engine porting?
exhaust sixing?

 

What kind of power can be expected on a streetport at 14-18psi, 1680/850 injectors and full 3" exhaust no cats. I know that question is kinda hard to anwser but just wanted to see if anyone else is or had already ran that turbo and what did they come out with.