PTE 6765 Billet Wheel Turbo Has Landed!

[Bent6]

I would say that i am building a car that is verging on un-streetable. It will be driven on the street most of the time, but this car is not being built to go get the kids and pick up groceries: it is being built to strike fear into the hearts of everyone in town.

The reason i am concidering this turbo is that i wanted to get me hands n the new 71 or 74 billet turbos, but they have not been released yet.

That being said, the power output for the new billet 67's is higher than the old hpq 70's thus my reasoning to try them out. I will be upgrading to the new larger turbos once they do come out, but for now...i just do not know.

At the end of the day i need a 9 second car that can play on the street.

Maybe sticking with a 70 turbo might just hold me over for the time being.

The car I'm running this 6765 in is a full weight street car with similar goals. It should run easy mid 10s, low 10s with a little extra boost, and it will have the ability to run in the 9s if I wanted to lean on it. My only limiting factor is the virtually stock bottom end with this particular engine.

This turbo will run 9s and is perfectly streetable. If you plan to run deep in the 9s you may want more turbo. Just remember - bigger is not always better - especially when it comes to street cars with a little strip action. You can't have the best of both worlds - compromise! My race car runs 7s with a 91.5mm - I could drive it on the street but that doesn't mean it's streetable. I have to remind myself that not all cars are race cars. Good luck!

 

[GNBRETT]

Just remember - bigger is not always better - especially when it comes to street cars with a little strip action. You can't have the best of both worlds - compromise! My race car runs 7s with a 91.5mm - I could drive it on the street but that doesn't mean it's streetable. I have to remind myself that not all cars are race cars. Good luck!

Wow isn't that the truth. Nicely put Bent6. Im getting the spring itch for a car since I no longer have one. Im starting to think ur right and might opt for something in that turbo size range so spool up is instant. I need to buy something that is comfortable, fast, clean and most importantly RE-sellable!

 

[ScorpionT]

I would say that i am building a car that is verging on un-streetable. It will be driven on the street most of the time, but this car is not being built to go get the kids and pick up groceries: it is being built to strike fear into the hearts of everyone in town.

The reason i am concidering this turbo is that i wanted to get me hands n the new 71 or 74 billet turbos, but they have not been released yet.

The billet 67mm is a good place to start. If you can handle the lag and want more power, go bigger. The billet 71mm has been out for awhile, and there is the billet 76mm. Upgrading to the billet 76mm from the cast version isnt worth it unless you dont mind spending the money for a slight bump in power.

 

[karolko]

I have heard the the billet 71 has been out for a while now, but does it use the came technology that these two new billet turbo are using, os is it primative in comparison.

I do not mind having a little lag, and i do have nitroud to compensate for it. I was always planning on going with a 70 hpq or hps turbo (0.85 or 0.96), because they have proven themselves to be 9 second turbos that can be driven on the street relatively easily.

I just want to squeek into the 9's, but my problem is elevation. I am at 3500' so i have to put that into perspective.

 

[ScorpionT]

The 71mm is a great turbo. The aerodynamics might not be as good as the new 67mm, but they may be updating it in the near future(its nowhere near primitive). The new 67mm could get you into the 9s, they make power like a traditional 70mm.

 

[Bent6]

Just finished a little testing and can tell you all - this turbo just flat HAULS.:biggrin: Before anyone asks - no track times - YET. This turbo should run bottom 10s without breathing hard - 9s should be no problem with the proper setup.

This thing spools FAST - almost TOO FAST! On the transbrake, log shows boost going from 0.1psi to 13psi in .8secs - and that was with a slightly lean spot on the VE map as it was coming into boost. The 3200 stall PTC works very well - you could probably get away with a little less stall if you wanted it a little tighter on the bottom end.

Another note - this turbo flows a TON of air. I am having isssues getting control of the boost. Housing is ported out to the max - Tial 38mm and AMS-500 controller. With a 6# spring I am getting 15psi using manifold pressure with the AMS doing virtually nothing - no CO2. May have to go to a bigger gate off of the header to get the range of control I am wanting for this car.

Stay tuned.......................................

 

[ScorpionT]

Another note - this turbo flows a TON of air. I am having isssues getting control of the boost. Housing is ported out to the max - Tial 38mm and AMS-500 controller. With a 6# spring I am getting 15psi using manifold pressure with the AMS doing virtually nothing - no CO2. May have to go to a bigger gate off of the header to get the range of control I am wanting for this car.

Stay tuned.......................................

We had one on a friends Supra and did 740whp so far, its a beast. As far as boost control, this turbo should have at least a single Tial 44mm, the 38mm wont do the job if youre trying to keep boost that low.

 

[karolko]

what type of psi was the supra running?

Also, do you think this turbo can put down 500 to the wheels at around 20 psi?

 

[Dusty Bradford]

Just finished a little testing and can tell you all - this turbo just flat HAULS.:biggrin: Before anyone asks - no track times - YET. This turbo should run bottom 10s without breathing hard - 9s should be no problem with the proper setup.

This thing spools FAST - almost TOO FAST! On the transbrake, log shows boost going from 0.1psi to 13psi in .8secs - and that was with a slightly lean spot on the VE map as it was coming into boost. The 3200 stall PTC works very well - you could probably get away with a little less stall if you wanted it a little tighter on the bottom end.

Another note - this turbo flows a TON of air. I am having isssues getting control of the boost. Housing is ported out to the max - Tial 38mm and AMS-500 controller. With a 6# spring I am getting 15psi using manifold pressure with the AMS doing virtually nothing - no CO2. May have to go to a bigger gate off of the header to get the range of control I am wanting for this car.

Stay tuned.......................................

:biggrin: I can't wait for track data........

 

[ScorpionT]

what type of psi was the supra running?

Also, do you think this turbo can put down 500 to the wheels at around 20 psi?

28psi. 500whp on 20psi on your car should be cakewalk.

 

[karolko]

Just finished a little testing and can tell you all - this turbo just flat HAULS.:biggrin: Before anyone asks - no track times - YET. This turbo should run bottom 10s without breathing hard - 9s should be no problem with the proper setup.

This thing spools FAST - almost TOO FAST! On the transbrake, log shows boost going from 0.1psi to 13psi in .8secs - and that was with a slightly lean spot on the VE map as it was coming into boost. The 3200 stall PTC works very well - you could probably get away with a little less stall if you wanted it a little tighter on the bottom end.

Another note - this turbo flows a TON of air. I am having isssues getting control of the boost. Housing is ported out to the max - Tial 38mm and AMS-500 controller. With a 6# spring I am getting 15psi using manifold pressure with the AMS doing virtually nothing - no CO2. May have to go to a bigger gate off of the header to get the range of control I am wanting for this car.

Stay tuned.......................................

Bent6,

You say that the turbo might be spooling a little too quick. Do you think it would have been better to go with a 0.85 A/R or the slightly larger 68mm exhaust wheel to help control the enslaught of power, and to gain a little on the top end?

do you see where i am going with this... A little larger turbo that can flow more up top, thus more power up top, but a litle slower down low so you do not blow off the tires all the time? Does that make proper sense???

 

[turboc87gn]

Just finished a little testing and can tell you all - this turbo just flat HAULS.:biggrin: Before anyone asks - no track times - YET. This turbo should run bottom 10s without breathing hard - 9s should be no problem with the proper setup.

This thing spools FAST - almost TOO FAST! On the transbrake, log shows boost going from 0.1psi to 13psi in .8secs - and that was with a slightly lean spot on the VE map as it was coming into boost. The 3200 stall PTC works very well - you could probably get away with a little less stall if you wanted it a little tighter on the bottom end.

Another note - this turbo flows a TON of air. I am having isssues getting control of the boost. Housing is ported out to the max - Tial 38mm and AMS-500 controller. With a 6# spring I am getting 15psi using manifold pressure with the AMS doing virtually nothing - no CO2. May have to go to a bigger gate off of the header to get the range of control I am wanting for this car.

Stay tuned.......................................

Mabye you should try the rjc 5 inch downpipe that may help you get control of the boost on this turbo according to the advertisement thats what they designed it for to be able to control boost on 9 sec cars..also if you dont mind my askin who did you order your turbo from and how much did it end up costing you?

 

[ScorpionT]

Bent6,

You say that the turbo might be spooling a little too quick. Do you think it would have been better to go with a 0.85 A/R or the slightly larger 68mm exhaust wheel to help control the enslaught of power, and to gain a little on the top end?

do you see where i am going with this... A little larger turbo that can flow more up top, thus more power up top, but a litle slower down low so you do not blow off the tires all the time? Does that make proper sense???

Hes using the transbrake, it will make boost very fast. If youre not using it, its a much more streetable.

 

[karolko]

So you wouldn't recommend the larger exhaust wheel and larger A/R for this turbo?

I think i just need to be a big boy and jsut buy one. Grrrr where the hell is that suger momma when you need one?

 

[ScorpionT]

You can, it just depends on what you want. I think the 6765 is plenty for the street, even if you track it now and then and dont need to go quicker than mid 9s. If you want more, go for the bigger turbine, but you will see more lag and probably want a higher stall for street driving.

 

[Bent6]

Bent6,

You say that the turbo might be spooling a little too quick. Do you think it would have been better to go with a 0.85 A/R or the slightly larger 68mm exhaust wheel to help control the enslaught of power, and to gain a little on the top end?

do you see where i am going with this... A little larger turbo that can flow more up top, thus more power up top, but a litle slower down low so you do not blow off the tires all the time? Does that make proper sense???

I am satisfied with my decision. By too fast I meant in it's current state of tune - I'm still tweaking it. The transbrake builds the boost fast - I can slow the rate by various means - spark, fuel, AMS, etc. The GTQ with the proper converter would do the same thing.

As I stated before, I choose this turbo primarily for street use with occasional track time. You are going to have to decide if you want to trade off some streetabilty -ie spoolup and stall for that slight HP edge the GTQ wheel and/or larger housing will give you. Remember, it's a COMPROMISE.

 

[karolko]

Alright, i have one more question to ask you boys.

Do you guys think this has emough steam to outflow a precision 70mm turbo of similar dimensions.

i have spoken to other people in the past and they have said that a t4 4bolt with a 0.63 will outflow a 0.63 3 bolt? What do you guys think of this. if so does that also mean i would need a looser converter?

 

[Bent6]

I think it will at the very least equal a 70mm.

A T4 will most always outflow a 3-bolt.

If anything you may could get away with a slightly tighter converter with a .63 T4.

I honestly don't think you'd be disappointed in the 3-bolt version of this turbo. If you want the "race car on the street" setup and don't mind the tradeoffs, just go with the 6768 aka GTQ with the .63a/r - if you want more you can always swap out the exhaust housing down the road. I don't know that a T4 with that small of an a/r would do you much good.

 

[ScorpionT]

Cant add more to what Bent said, he explained it well. If the 6765 for some reason isnt enough, move up to a T4 exhaust.

 

[karolko]

I am goign with the t4 becasue i know i will want something bigger down the line, that and i just spent the $1100 for TA headers, so it is finalized.

Bent6, you said a t4 with the small A/R will not do much good? will it hurt performance? Should i just step it up right away to a 0.81.

The reason i am not going with a 6768, is it is alot more money for only 35 ish HP.

My old turbo was a T66 BB with a 0.63, and it did mid 10's. i am afraind that this turbo will preform similarly to my old one, which would be a total waste of money in my eyes.

One last thing guys, i am at 3500', so i need more turbo to hit my 9 second goal. If this turbo can only do 9's when the stars align, then it is not for me. That is why i have been leaning toward the 70mm, with its proven 9 second ability.

Thoughts, comments...