Turbo Upgrades

[Mr.Spool]

A Supra online did a nice G30-770 (58/55) in a V band .61 vs .83 vs 1.01 and it was crazy how the .61 spooled slower and made way less torque and power on higher boost, big cubes mega choke in the smaller housing even on small wheels.

Go to 8:30ish, the above dyno comparison is there. Curious what you think and have seen.

duck://player/qvSibDP902k

On the supra motor with its very good set of heads and high rpm window a small turbine wheel with a small ex housing is creating too much back pressure going larger made more power everywhere.
Those turbos they chose are the bottleneck for that motor due to not enough turbine wheel.
The exhaust housings can only do so much.
in that case the larger ar allowed for the turbine wheel to max out as a 1.01 ex housing cannot be maxed out by a turbine wheel that small.
The shaft speed was at its max from what they said but I can't see where the iats are to see what the compressor is doing.
those guys are looking at backpressure changes (they use the word choke) but doing it on a dyno and did alot of swapping parts when they could of found that result just with a sensor
Compressor size changes volume if backpressure is in a certain range.
The motor has to be able to move the volume.

 

[Mr.Spool]

What back pressure data on .63 housing with what wheels?

Im referring to buicks

 

[Mr.Spool]

. 3 bolt .63 is a big choke on these new wheels on our cubes, .83 minimum.

Im referring to buick motors.
What back pressure and wheels?

 

[GNVYUS 1]

109 engine, Comp 58/58, 62/62 or 64/66 in
3 bolt .63 vs .85?
V band. 83 vs above?
T4 vs above?

We've seen Dynomans big 69/71 but that's serious 109 splitting power.

 

[Mr.Spool]

comp ctrx triple bb on 109 or stage motors with the wheel configurations i have speced can/have achieved 1.2 to 1.8 bp ranges at/ bellow 1000hp regardless of exhaust housing configuration that you have requested.
I did not test a .63 ex housing the 3 bolts I tested are .85.
Some do a little better depending on the ve of the motor.
Spool times are similar as well when the wastegate configuration is there.
However the boost number will change as that's the restriction measurement.

 

[Mr.Spool]

Smallest comp turbo ive speced for a Buick 109 has been 63mm with the largest 73mm.

 

[vacuum 6]

its very nasty I did not get the results I was looking for,But it was its first time out. Next track day aug 24.
I think this turbo is a big hand full on the street It drives good and has good street manners, 275/60-15 Coopers are not the tire for the street.
My wife and daughter could drive it with the 5857. I won't be letting then get behind the wheel of this. I can't describe how hard it hits the tires.
I intend to take this car into 10s.Older 5858 6262 should start popping up for sale.But if you intend to run DOT slicks, The new turbos are supper.
My 5857 was supported with a TT chip 60s 255 ractronix pump and Hotwire Oe fuel lines and ALKY.Good basic mods. I was having some problems with my harness and had added TR6. I added a Holley to rid myself of all the problems I was having with the harness. The 6062 just seems like the next rabbit hole for me to head.
Regardless of your next turbo selection Ball bearing would be my first consideration over size and manufacture
Decide if you have the fuel to Suport 400 hp 500hp or more then your transmission should be factored in along with convertor

Thread hijacking is occuring...

Please share your first time out results with the 6062.

 

[vacuum 6]

I've had my 5957 JB for over 10 years. This little turbo has taken my car deep into the 11s NP. With a better tune high 10s trapping 125.

With the performance I’m getting, I have a hard time dropping the cash on BB turbos. I’m probably wrong they do kick ass however, I don’t see tons of threads supporting all the new turbo tech.

 

[Mr.Spool]

I don’t see tons of threads supporting all the new turbo tech.

What does that mean?

 

[Mr.Spool]

With the performance I’m getting, I have a hard time dropping the cash on BB turbos.

Your 59mm is a good size turbo for 11s.

 

[vacuum 6]

What does that mean?

Data to support a HP increase etc with the new turbos on the market.

What does that mean?

What data has been posted showing power increases with the newer turbos. Is it faster spoolups, a XX turbo flows more air/supports more HP, bigger wheels spool like small wheels? Etc.

 

[Reggie West]

I have used a Comp 58/58 triple ball bearing on a bone stock car and had pretty good response and there is no lack of power with it.

I used one on a forged 3.400 crank/ 3.810 motor with ported heads running a flat tappet cam and there is no damn lag at all with that thing. And yes the top end is never ending.

I have yet to try a hubless version yet that will be next.

You can't go wrong with that set up. And yes the HPT stuff is just as responsive as well. Dealers choice.

 

[Mr.Spool]

What data has been posted showing power increases with the newer turbos. Is it faster spoolups, a XX turbo flows more air/supports more HP, bigger wheels spool like small wheels? Etc.

Exactly that.

 

[Mr.Spool]

I have yet to try a hubless version yet that will be next.

Its alot better everywhere throughout the curve

 

[Mr.Spool]

Data to support a HP increase etc with the new turbos on the market

I've posted several times about this and with the permission of the owner posted up a log showing the spool characteristics and airflow capabilities with fuel usage and included backpressure information.
I've also posted about several cars that have made their fastest passes and or best et when switching to the newer teck.

 

[dynoman]

Data to support a HP increase etc with the new turbos on the market.

What data has been posted showing power increases with the newer turbos. Is it faster spoolups, a XX turbo flows more air/supports more HP, bigger wheels spool like small wheels? Etc.

I posted up before , the difference with no other changes , in going from a Comp CTR to a CTRX hubless , both being 6971 .85AR 3bolt . We had to add 7% more fuel after switching to the hubless .
Listen to this discussion about Apex Hubless turbos from Ben Hochman of Hochman Fabrication and Speed .
Apex and Comp are the only companies with patents on Hubless technology . watch the video at 1:36:00 when they discuss the deference between Hubless turbos and the rest .

 

[THensley]

Thread hijacking is occuring...

Please share your first time out results with the 6062.

I don't see this as a Hijack This gives OP something to compeer
First outing lots of new things and I don't test on the street. Just small hits under 60 mph. The 6062 ran good on 91 and ALKY with small hits and seem like it was happy with E85 too
went to the track it went 12.5 I let off because of high load misfire.With new fuel, injectors and Turbo I was at a loss to what was happing. I thought it was lean though 02s looked good and E85 plug is all new to me.
It took me one more pass with some fuel added No help.
For 10 years I have gaped plugs .032 with no problem. I came home and put my nose down and went to work. I closed the gap to .028 it seems to have solved the problem.
5857 had its growing pains but it did not hit the tires so hard and was not as scary to get a hold of I went stock turbo and 42 lb injectors to 5857 and 60s it was a big hp change but it was much easer. It only took me two track outing to get it in the 12s and for the next 3 years it ran solid 11.5 .
I would say it was a great success story
I see me taking the 6062 low 10s I was surprised I was blowing the spark out and not 100% sure that's not my last bridge to cross
I don't know if fuel or turbo was blowing my spark out . I m using ALKY on top of E85 more wild cards

 

[Mr.Spool]

I have yet to try a hubless version yet that will be next

I've seen 1 lb of boost at 2000rpm on a 69mm hubless on a stroker motor
And saw 1 lb of boost at 2650rpm on a 73mm on a stock stroke motor.