How much boost on E85

[turbo nasty]

thats got to be a stage motor
you'd never hold that with 4 headbolts....even if the gaskets are glued
-dan

Ever seen Jason Whites 109 8 second car run with a 67 turbo. The heads do lift slightly LOL

 

[WIKEDV6]

I know some here locally ran 42 psi on stock block, stock stroke, E85 and so forth. I guess it can be done!

Prasad

 

[NarcGN]

28 pounds with a 6776 on the dyno. Stopped there because Injector duty cycle was at 95%

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[TurboBuick86]

I've seen on my white T up to 41psi. without a problem


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[Wahoo]

How many psi can you get out of a stock turbo?

 

[TurboBuick86]

U can run high #'s up there, but the turbo loses it's efficiency lol


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[bison]

This is an old thread but I thought id dig it up and see how things have progressed in the e85 tuning world.
Where are you guys at these days with your boost/timing/afrs? Im at 24psi / 23.5deg timing with 10.5 afr and it loves it. Care to share?

Post your hp or mph info so we can see what the mass flow

 

[Ttype6]

28 pounds with a 6776 on the dyno. Stopped there because Injector duty cycle was at 95%

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How much power and torque did 28 lbs generate?

 

[tbone87]

Post your hp or mph info so we can see what the mass flow

How do u figure mass flow??

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[bison]

How do u figure mass flow??

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Rpm@power. If the engine has peak power at around 5500 it will have a mass flow in lbs/min about 10% of it's actual power. Keep in mind hp is a formula. So 650hp is about 65lbs/min in the mid 5000's. If you increase engine speed 10% you will see more power because of rpm but mass flow may only increase a little over the slower rpm engine. Mass flow data enables us to compare any engine regardless of rpm.

 

[NarcGN]

it was 610 at the wheels around 650 torque, i used to have the dyno pic saved but i lost all my files

 

[dandaman]

Post your hp or mph info so we can see what the mass flow

Not too sure on HP at a guess around 700rwhp.
Went 9.34@152 few weeks back. I shift at 7100rpm.
Cars rear end was very loose and a lot of wheel spin resulted. I've since got new adjustable shocks and new diff in the car. Going to go out at Easter.

Just wondering how far I can go with timing... Inlet temps are around 45-50c

Afr 10.4 - 10.5

I'm thinking around 24deg and 28lbs boost might be my limit.

Thoughts?

 

[dandaman]

I've seen on my white T up to 41psi. without a problem


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41psi? what turbo was this? My turbos would be well out of steam by then. Im thinking 28-30 max for what im using.

 

[TurboBuick86]

71HPQ


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[bison]

Not too sure on HP at a guess around 700rwhp.
Went 9.34@152 few weeks back. I shift at 7100rpm.
Cars rear end was very loose and a lot of wheel spin resulted. I've since got new adjustable shocks and new diff in the car. Going to go out at Easter.

Just wondering how far I can go with timing... Inlet temps are around 45-50c

Afr 10.4 - 10.5

I'm thinking around 24deg and 28lbs boost might be my limit.
That's more like 950whp and 105lbs/min if the car is 3600lbs.
Thoughts?

 

[pacecarta]

bison he's not in a regal , some sort of aussie corrolla at 2800lbs ... http://turbobuick.com/forums/threads/timing-with-ethanol.396484/page-2#post-3265234

 

[bison]

Still 94-95lbs/min

 

[dandaman]

Its not a corolla its a Aussie comodore. It would be around 3000lbs plus me at 200lbs.

They are 3200lbs from factory.

I really don't know what power it makes. Was only a guess.

We had it on the dyno about a year ago and it made 580rwhp on 14psi boost.

Since then I have not had it back on and we are at 23-24psi boost.

I'm just going to keep adding boost and watch my inlet and eg temps.

 

[bison]

Its not a corolla its a Aussie comodore. It would be around 3000lbs plus me at 200lbs.

They are 3200lbs from factory.

I really don't know what power it makes. Was only a guess.

We had it on the dyno about a year ago and it made 580rwhp on 14psi boost.

Since then I have not had it back on and we are at 23-24psi boost.

I'm just going to keep adding boost and watch my inlet and eg temps.

You should log backpressure also

 

[dandaman]

I do log back pressure. I was originaly using GT3076R turbos but the back pressure was high due to the small exaust wheels. I switched to the GT3582R and all is good.