New ct20b record. 365rwhp @ 22psi. Gen2 3sgte

[Al]

From MR2OC dyno section: http://www.mr2oc.com/showthread.php?t=439258

Built 2nd gen, stock valves, GSC 268 cams, intake, exhaust, ebay side mount

Power FC

Tuned on E85 by NoShoes

[Bling]

Impressive!

Tech question?

[Al]

Tech Questions
The place for all technical car discussions.

[iOnic]

Nice! Solid power

[strx7]

those figures are only as revelvant as the dyno's correction factors.....

[Al]

those figures are only as revelvant as the dyno's correction factors.....

uncorrected figures.

[strx7]

still doesn't tell you what HP it is actually making at the flywheel.
Generally accepted dynojet WHP readings are 15% less than flywheel

[Al]

How do you measure the engine hp without pulling the engine out and putting it on an engine dyno?

Last time I checked I drove on wheels not a flywheel.

[iOnic]

Impressive power on a "stock" turbo regardless of where it's measured from.

[RedMist]

How do you measure the engine hp without pulling the engine out and putting it on an engine dyno?

Last time I checked I drove on wheels not a flywheel.

WHP is what matters!
That WHP is considerably better than I had expected from a CT20b. It's more than I'm pulling from my GT2871r's.
I suspect a good portion of the power is the E85.

[Al]

Indeed. For a long time the record sat at around 320rwhp on a gen2 motor.

[Dell'Orto]

How do you measure the engine hp without pulling the engine out and putting it on an engine dyno?

Last time I checked I drove on wheels not a flywheel.

WHP is what matters!
That WHP is considerably better than I had expected from a CT20b. It's more than I'm pulling from my GT2871r's.
I suspect a good portion of the power is the E85.

Totally...I think neelside's GT Four made 299kw on pump gas, and 350+ on E85

[BlakeNZ]

this is very solid(i mean impressive) for a stock turbo 2 litre. well done.

[cat007]

How do you measure the engine hp without pulling the engine out and putting it on an engine dyno?

Last time I checked I drove on wheels not a flywheel.

They let it run down after a high gear pull and measure the resistive force it takes to slow the dyno down?

[sergei]

How do you measure the engine hp without pulling the engine out and putting it on an engine dyno?

Last time I checked I drove on wheels not a flywheel.

They let it run down after a high gear pull and measure the resistive force it takes to slow the dyno down?

Which is a very misleading experiment.
Normally with this "measurement" people are led to believe that they have 100Hp loss through drive train (which would be realistic for quarry dump truck).

[iOnic]

What's the obsession with flywheel power anyway? I'm personally more interested in the sum of all parts.

[strx7]

What's the obsession with flywheel power anyway? I'm personally more interested in the sum of all parts.

flywheel HP is the only TRUE HP, because all types of hub and wheel dynos read different!!!!!! why cant people comprehend that.

wheel HP readings are only relevant from one car to another is they are done on the same dyno, or within a ballpark if it is the same type of dyno.

many years ago a vehicle was run on dynojet, dyno dynamics and dynopak dynos as an auto. the owner then converted it to manul, and ran all 3 dynos again. before the engine was put in the car it was also run on an engine dyno. the results were....
Dyno Pak manual read 9% less than flywheel
Dynopak Auto read 11% less than flywheel
Dynojet Manual read 15% less than flywheel
Dynojet Auto read 17% than flywheel
Dyno Dynamics Manual read 27% less than flywheel
Dyno Dnamics Auto read 29% Less than flywheel.

[sergei]

What's the obsession with flywheel power anyway? I'm personally more interested in the sum of all parts.

flywheel HP is the only TRUE HP, because all types of hub and wheel dynos read different!!!!!! why cant people comprehend that.

wheel HP readings are only relevant from one car to another is they are done on the same dyno, or within a ballpark if it is the same type of dyno.

many years ago a vehicle was run on dynojet, dyno dynamics and dynopak dynos as an auto. the owner then converted it to manul, and ran all 3 dynos again. before the engine was put in the car it was also run on an engine dyno. the results were....
Dyno Pak manual read 9% less than flywheel
Dynopak Auto read 11% less than flywheel
Dynojet Manual read 15% less than flywheel
Dynojet Auto read 17% than flywheel
Dyno Dynamics Manual read 27% less than flywheel
Dyno Dnamics Auto read 29% Less than flywheel.

what power level was the engine making?

[strx7]

about 550-600hp at the motor from memory
was a 5.something litre v8

[sergei]

about 550-600hp at the motor from memory
was a 5.something litre v8

So the most accurate dyno would be the one that read 9% to 11% less than at flywheel, since that is most what you expect to be lost at transmission (~50Hp for that power).