Help pic a BB turbo for me.

[John Wilde]

Just got a GT 62 65 dbl BB turbo. I've got a 9" 3000 stall non LU. On my combo, it drives like a bone stock GN around town. Hope to have it on the dyno in the next week or so. Hope to see 500-550 RWHP on 91 oct and Razors alky. I'll post results.

Mike B.

Mike,

Let a brother know how it works!!!

 

[Dusty Bradford]

So where is the point where a Pat's converter won't hold locked? Low 11s? Just curious. I know lots of cars in the mid 10s and faster are using the PTC non lockups but I'm just trying to figure out the crossover point.

Can't really offer any info on how far the Pat's can take you but I generally swap to a non lock in the 10's. My l/u converters begin to loose efficiency in the 10.80 range in a normal weight gn. These are l/u's that are not locked at the track.

 

[Otto J]

An HPT 6776 with a .63 housing,Front cover depends on your intercooler inlet pipe.

 

[Audie1]

I am in the market for a new snail and need some help picking. I have a 2800/3000 stall and I'm buying 60# injectors and supporting mods. I was a turbo that is a proven 10 second turbo and spools nice with the convertor that I have.
The car will be 90% street and 10 strip.

Thanks for all the help.

Seems that your needs for a new turbo are similar to mine. I just got off the phone with the guys at Precision, the newest hottest turbo out according to them (with low to mid 10's in mind) is their new HP6262BB turbo, it spools faster and makes a little more power than the 6776BB and the 6765BB. They told me I would need somewhere around 70# injectors to go with this turbo. You need to make sure you have the corresponding supporting mods as well. Below is from an article that is posted on their site, about the 6262BB Turbos.

With more and more units in circulation, results continue to pour in. In one of the latest tests, Sound Performance swapped out a pair of 67mm turbochargers for a pair of our new HP6262 turbochargers, and the results were amazing. The new HP6262 turbos spooled 500RPM faster, and made 16 more RWHP (1,033RWHP total) at 30lbs of boost. Congrats to the guys over at Sound Performance!

 

[jerrad]

I wonder if 60's with alky can feed the beast? Plus, I would be running bottom 11's so I wouldn't think I'd run out of injector. Guess I'll add one more turbo to the list of maybe's.
Thanks for the info Audie.

 

[bison]

Seems that your needs for a new turbo are similar to mine. I just got off the phone with the guys at Precision, the newest hottest turbo out according to them (with low to mid 10's in mind) is their new HP6262BB turbo, it spools faster and makes a little more power than the 6776BB and the 6765BB. They told me I would need somewhere around 70# injectors to go with this turbo. You need to make sure you have the corresponding supporting mods as well. Below is from an article that is posted on their site, about the 6262BB Turbos.

With more and more units in circulation, results continue to pour in. In one of the latest tests, Sound Performance swapped out a pair of 67mm turbochargers for a pair of our new HP6262 turbochargers, and the results were amazing. The new HP6262 turbos spooled 500RPM faster, and made 16 more RWHP (1,033RWHP total) at 30lbs of boost. Congrats to the guys over at Sound Performance!

With 6 70's you could do 800hp without alky. I highly doubt you will achieve anywhere near 800hp with a single 6262. Especially a 3 bolt version. You would be lucky to hit 580hp if you beat the balls off it at around 30psi. You could feed it with 6 50lb injectors without alky.

 

[Audie1]

With 6 70's you could do 800hp without alky. I highly doubt you will achieve anywhere near 800hp with a single 6262. Especially a 3 bolt version. You would be lucky to hit 580hp if you beat the balls off it at around 30psi. You could feed it with 6 50lb injectors without alky.

You are right about the injector size since the 6262BB is rated at 670 fly wheel HP....I just quoted what the guy at Precision told me. Guess he is thinking it was better safe than sorry.

 

[Audie1]

With 6 70's you could do 800hp without alky. I highly doubt you will achieve anywhere near 800hp with a single 6262. Especially a 3 bolt version. You would be lucky to hit 580hp if you beat the balls off it at around 30psi. You could feed it with 6 50lb injectors without alky.

Don't want to get into a pissing contest here Bison, since you are obviously an intelligent man and engine savvy to boot. But check this out.....

Theoretically.......six 70 # Injectors (without alky) running at a duty cycle of .9 and at a BSFC of .6 (middle figure for forced induction) would give you approximately 630 HP (at the flywheel). Now at a 100% Duty Cycle (not recommended) or 1.0, you would get 700HP. With Alky injection you could probably see some numbers above the 800HP level, how much? I don't know, as I'm not that smart. :redface:.............Would need a Dyno.

Precision's newest HP6262BB turbo has bigger balls than their old 67mm turbos (gotta love technology), the HP6262BB Turbos are rated at 670 HP and are supposed to spool like there ain't no tomorrow. So theoretically one would need six 67# injectors (without the aid of alky) working at 100 % duty cycle (not recommended above .80, but we push it a little ) and at a BSFC of .6 to make 670 HP. So the guys at Precision were actually right in their recommendation of 65-70#ish injectors. They are being a bit on the safe side though. You can input and check the numbers at the link below at Marren's. These are just approximate figures, a dyno would give us the real world numbers and of course one would need all the supporting mods to make the stated power levels. With the HP6262BB Turbo, a person would be safe using 60lb injectors and alky injection, when putting the pedal to the metal.



Injector Selection Guide




.

 

[GNBRETT]

What would be a good upgrade from a TA49? Running 12" 2800 stall, trans brake, 60lb injectors, big front mount and Razor Alky kit. Motor itself is totally stock, less than 30k on it. Bison, will go with whatever you recommend. Was hanging around with the guys this summer at the Berlin Tpke but don't think we ever talked.

Not planning on setting the world on fire just want to play around with a new project and like the idea of the ball bearing watercooled turbos. Was thinking of the 6162. Is going with the 4" inlet / 2.5" outlet the best way to go? Obviously I can come up with any kind of intake for it.

Oh o..... a bigger turbo? Somehow I doubt it will end there...

 

[bison]

Don't want to get into a pissing contest here Bison, since you are obviously an intelligent man and engine savvy to boot. But check this out.....

Theoretically.......six 70 # Injectors (without alky) running at a duty cycle of .9 and at a BSFC of .6 (middle figure for forced induction) would give you approximately 630 HP (at the flywheel). Now at a 100% Duty Cycle (not recommended) or 1.0, you would get 700HP. With Alky injection you could probably see some numbers above the 800HP level, how much? I don't know, as I'm not that smart. :redface:.............Would need a Dyno.

Precision's newest HP6262BB turbo has bigger balls than their old 67mm turbos (gotta love technology), the HP6262BB Turbos are rated at 670 HP and are supposed to spool like there ain't no tomorrow. So theoretically one would need six 67# injectors (without the aid of alky) working at 100 % duty cycle (not recommended above .80, but we push it a little ) and at a BSFC of .6 to make 670 HP. So the guys at Precision were actually right in their recommendation of 65-70#ish injectors. They are being a bit on the safe side though. You can input and check the numbers at the link below at Marren's. These are just approximate figures, a dyno would give us the real world numbers and of course one would need all the supporting mods to make the stated power levels. With the HP6262BB Turbo, a person would be safe using 60lb injectors and alky injection, when putting the pedal to the metal.



Injector Selection Guide




.

I agree with those numbers but on the inj DC. I however would be very suprised if 1 or 2 guys on this board are able to make 670hp with a 6262 this year. 580-600 will be where most wind up if they run it prety hard. It would be a 132-133mph pass at 3600lbs for 670hp. Thats about what i made with a 66 s-trim with a .85 ex. at 29 psi with iron heads. The 6262 comp wheel is probably at least as good as the comp wheel on my 66 but the exhaust side is not even close. Im probably gaining about 60hp over an old 76 trim exhaust wheel with the same comp wheel. If i ran the timing up on mine i probably could have gotten 135mph.

 

[Audie1]

I agree with those numbers but on the inj DC. I however would be very suprised if 1 or 2 guys on this board are able to make 670hp with a 6262 this year. 580-600 will be where most wind up if they run it prety hard. It would be a 132-133mph pass at 3600lbs for 670hp. Thats about what i made with a 66 s-trim with a .85 ex. at 29 psi with iron heads. The 6262 comp wheel is probably at least as good as the comp wheel on my 66 but the exhaust side is not even close. Im probably gaining about 60hp over an old 76 trim exhaust wheel with the same comp wheel. If i ran the timing up on mine i probably could have gotten 135mph.

Those are good numbers that you got there Bison. I think the 670HP numbers they claim are from the 6262 are at the flywheel and under obvious optimal conditions at that. I will probably never see the type of times that you run because I'm afraid to turn the wick up that high. Guess as long as I'm in the 10's at all, I'll be happy. There is no "TR support system" around these parts, so I'm flying solo down here in may part of SC. Being amongst others of the like kind might make me a little braver though. But..........thank God for these Forums. Our TR's probably would not be half as fast without them .........I know that I've learned much from others input or experiences. :biggrin:

 

[bison]

Those are good numbers that you got there Bison. I think the 670HP numbers they claim are from the 6262 are at the flywheel and under obvious optimal conditions at that. I will probably never see the type of times that you run because I'm afraid to turn the wick up that high. Guess as long as I'm in the 10's at all, I'll be happy. There is no "TR support system" around these parts, so I'm flying solo down here in may part of SC. Being amongst others of the like kind might make me a little braver though. But..........thank God for these Forums. Our TR's probably would not be half as fast without them .........I know that I've learned much from others input or experiences. :biggrin:

Their numbers are flywheel numbers and probably not with a 3 bolt housing like most of the Buicks have. 10's should be easy at 25 psi.

 

[TR Custom Parts]

Oh o..... a bigger turbo? Somehow I doubt it will end there...

Never does, does it!? Already got the injectors and intercooler so why not? Going to probably need some trans work but not sure what route to take with that. (meaning who to do it)

 

[GNBRETT]

Going to probably need some trans work but not sure what route to take with that. (meaning who to do it)

Well, u got Bison or Otto for that. Both know there sh!t when it comes to the 2004r. Well, both know their sh!t about everything pertaining to these cars I guess for that matter.

 

[SS_Sean]

Well, this is scary. I was told I would be safe with 50# injectors and alky at 25#boost running the 6262.

 

[bison]

Well, this is scary. I was told I would be safe with 50# injectors and alky at 25#boost running the 6262.

You should be able to trap high 120's with 50's and alky.

 

[John Wilde]

You should be able to trap high 120's with 50's and alky.

I have 65s and a single nozzle alky kit I might install one day....

 

[Sweet6]

Well, this is scary. I was told I would be safe with 50# injectors and alky at 25#boost running the 6262.

Should be no problem. I trapped at 126 at 3650lbs with a single nozzle alky and 50s. The DCs were around 85% accrording to the power logger. So 130 should be doable I would think.

 

[SS_Sean]

Thanks, guys. Sorry to walk on the thread.

 

[M2daa2da2xny]

I have a brand new 70 trim bb turbonenics... turbo is huge