Page:
Home > General Chat > Part throttle lean off pipe.

Miniwilliams

User Avatar

5329 Posts
Member #: 140
Proven 200+bhp & Avon Park 05,06,07 Class D 3rd place

5th May, 2009 at 06:20:06pm

Still good going sir!

Best 1/4 mile 13.2 seconds @116 mph
First 5 port miniturbo to make over 200 bhp on a carb?
First 5 port miniturbo to make over 200 bhp on Injection?

http://www.mattwoodsphotography.com

robert

User Avatar

6752 Posts
Member #: 828
Post Whore

uranus

5th May, 2009 at 06:43:12pm

thanks 1380 ,thats v interesting 40 bhp losses is about double the normal mini losses ,do you have a dragging brake ?

also looks like theres a lot more revs available that you've graphed looking at the way the power curve is still rising off the screen .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Miniwilliams

User Avatar

5329 Posts
Member #: 140
Proven 200+bhp & Avon Park 05,06,07 Class D 3rd place

5th May, 2009 at 07:02:47pm

i normaly get about 35 to 40 ish bhp losses as well mate. I thought that was the norm lol.

Best 1/4 mile 13.2 seconds @116 mph
First 5 port miniturbo to make over 200 bhp on a carb?
First 5 port miniturbo to make over 200 bhp on Injection?

http://www.mattwoodsphotography.com

1380turbo

User Avatar

365 Posts
Member #: 1211
Senior Member

Working up the BHP ladder.

5th May, 2009 at 07:59:56pm

The revs on that graph are about 300 rpm out as the induction clamp broke so we used my rev counter to calibrate the rpm. Still the power figures are correct.

As for the 40bhp loss i'm not sure what is normal. No dragging brakes as far as i know.

It was overfuelling at the top end to compensate for that blip at the lower end of the graph, there may be more RPM/Power available but it didn't seem to want to get there so we didnt push it.

However since clamping that pipe the care is totally different. When it gets back on the rollers we should get it spot on.........if the clutch holds!

Edited by 1380turbo on 5th May, 2009.


robert

User Avatar

6752 Posts
Member #: 828
Post Whore

uranus

5th May, 2009 at 08:10:41pm




On 5th May, 2009 Miniwilliams said:
i normaly get about 35 to 40 ish bhp losses as well mate. I thought that was the norm lol.



matt, normal losses on a sun ram 12, which i had calibrated a month or two before the test ,where 26 bhp on a heli box ,and 20 bhp on a straight cut ,with falken tyres and at around 110 mph ,

the higher the mph the higher the losses ,and lower mph would have lower losses .

thicker oil tends to give higher losses ,so the warmer the engine the lower the losses ,vizard talks about 18 bhp as a reasonable loss on a straight cut .

the higher the tyres are pumped up the less the losses ,and the less tread on the tyres also less losses
.
the lowest losses i ever had on my rolling rd ,where a 1969 cooper formula 1 car ,with a rear engined v8 alfa engine and straight cut everything .,it had 15 bhp losses .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Miniwilliams

User Avatar

5329 Posts
Member #: 140
Proven 200+bhp & Avon Park 05,06,07 Class D 3rd place

5th May, 2009 at 08:16:53pm

I take on borad what you says mate. I just think 20 odd is a little lean shell we say.

Best 1/4 mile 13.2 seconds @116 mph
First 5 port miniturbo to make over 200 bhp on a carb?
First 5 port miniturbo to make over 200 bhp on Injection?

http://www.mattwoodsphotography.com

1380turbo

User Avatar

365 Posts
Member #: 1211
Senior Member

Working up the BHP ladder.

5th May, 2009 at 08:24:25pm

Jack Knight straight cut through-out.
1:1 transfer gears
3.1:1 Final drive
Falken Tyres

Very interesting stuff Robert.
Home > General Chat > Part throttle lean off pipe.
Users viewing this thread: none. (+ 1 Guests) <- Prev  
To post messages you must be logged in!
Username: Password:
Page: