Hi, I'm looking for suggestions for actually doing these two turbines, which would work best and which of the two is better quality. Both turbos with a / r .63 Turbine housing. which of the two produces more horsepower per pound of boost for 600hp goal, street and track car D series fully built!

 

comp turbo is very efficient, nthats wat im using. had the 6765 billet and made 749 on 31lbs with 9:1 comp. going bigger now but sticking with comp

 

The 6765 Is a great turbo I have one from Precision tho...Im using it on my H22 I made 479whp on only 17psi I should have made more but I have shitty delta cams im switching to Blox type B cams i should have no problem making 550 on pump Its a great turbo give it a shot there is a local shop here in washington making 1200+whp in their shop car on a fulling built B18c1with a Precision 6765H and they made 698whp on their full build D16 with the same turbo. speedfactoryracing.net

 

Up!!!!!!

 

1200hp from a 6765?

 

anyone else have any opinion? which would be my best option for what I want?

 

That's a negative. your looking at around 930whp max and the depends on how big the A/R is on the turbing housing.

 

yup! its only rated for 900+ but check the website if you dont believe that turbo is way underrated. they are running a divided 1.44 A/R on the hot side on a B18C1 on 85mm sleeves the car is a beast. here is a video

http://www.youtube.com/watch?v=JSpDocQPqUw

Im not having a debate I have seen the car in person at the track and when I was getting my car tuned there. let me get their dyno sheet. in 2010 they made just a hair over 1100whp and in 2011 switched to a precision GT4272R and made over 1200whp.

 

You are speaking of Speed Factory's Hatch, driven by Kevin Kempf that races in the Outlaw Street class, and they are NOT using a 6765. That turbo is not even capable of making that type of power. That particular car is using a Precision billet GT-4272R, or they might have switched to the 7280. They are capable of making 1200+ whp, but the billet 6765 is not.

OP...

A billet 6262 will net you 600 whp with no issues, no need for the larger turbine wheel from the 6266.

 

yes they are running a GT-4272R I just called and spoke with matt . Its james car that was running the 6765H on his D16 before they pulled the motor I apologize for the confusion.

 

6262 has routinely given out 700+ easily though.

 

mmmmm, remotely possible but definitely not easily

 

well....possible was thrown out the door when we were making around 750 lol.

basic block with a decent portflow head, ramhorn, magnus intake manifold. 11:1 83mm

I promise this power was not a battle to make.

 

Sure.. ok. Perhaps it was a "dyno" measurement thing, as it was different in our experiences with it. But if you say so, ok.

 

I hope those guys come out to the east coast again this year. I saw the car in the pits at World Cup Finals at MIR this past November, and man, pics don't do this car justice at ALL. Beautiful and fast car indeed.

 

I know it's possible to reach 600 horsepower with a precision 6262, but you have to fit more than 32-34 lb of boost. I am looking for a more efficient turbo to me, a little larger than the 6262 and was the 600 horsepower less than 30 pounds of boost! which of these two brands is more efficient turbos and what you think I work better

 

It's a D series engine!

 

is it possible?

 

on a d series? im speaking of B, sorry
and i believe we were running around 30-34 psi.

on a B, we did exactly what i said. I bet600 is doable on the d series.

 

haha im sure they will/ Yeah its a beautifl car!! yeah that thing is super fast I would love to go for a ride but I cant talk them into it haha.

 

A guy here made 810whp @ 32psi on a billet 6262. the motor was a 2L AFI top mount i believe. so it's definitely possible.

 

I'm making 560whp on a .68ar 6262bb @ 25 psi. With a b18c 9.1 compression. Could easily break 600 but max my 1200cc injectors on e85.

 

With the right parts 6262's will do 700 with no problems. A local b series car i've done fab work on and sold a 6265 to does 770ish @ 25-26psi. Reputable dyno that pretty much any fast car in AZ dyno's on too before that arguement comes up.

 

but B16 with a 85mm 9.1:1 is good with 6765? I have a 6262 but afraid go to6765 and create more lag

i have PRO1 cams and TB 70mm

 

It would be intriguing to see the boost/ pressure ramp curve would be before I accept that premise. That exhaust wheel cannot physically do close to 700whp without using a lot of boost pressure much less 770whp. I'm sorry I'm not convinced that easily. I need to see a bit more of the car it's tuner. Contact info would be nice to discuss his pressure levels and setup.

I digress, as this isn't even about me or proving me right or wrong. I don't want to distract from the original point of this thread