james h
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| posted on 20/4/17 at 04:58 PM |
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What compression ratio and AFR are turbo nutters running?
As above! Car and bike engines.
My engine simulation project is coming along nicely - results seem to correlate with the real world!
Now it's turbo time....
1. So what did you lower your compression ratio to?
2. And your air/fuel ratio
If you've original figures, even better!
Cheers guys
James
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chillis
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| posted on 20/4/17 at 06:31 PM |
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Depends a lot on what engine (combustion chamber design) and who built it. And what boost you want to run?
Anywhere between 7:1 and 11:1 CR, again dependant on boost which could be 1/2 bar to 3 bar maybe more. Afr anywhere between 8.5:1 and 13:1 dependant
on CR and boost and what your pre turbine temperatures are.
Never under estimate the ingenuity of an idiot!
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Benzine
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| posted on 20/4/17 at 06:40 PM |
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21.8:1. Didn't lower it, just put more fuel and boost in.
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mark chandler
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| posted on 20/4/17 at 06:52 PM |
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Straight out the cbr900 bike, 11.1:1, boosted at 7psi, AFR was around 12 from memory
[Edited on 20/4/17 by mark chandler]
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coozer
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| posted on 21/4/17 at 01:57 PM |
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I'm planning 8.0 with forged pistons, looking for 350bhp out of my blacktop.
1972 V8 Jago
1980 Z750
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madteg
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| posted on 21/4/17 at 07:02 PM |
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7:8:1 @ 2.3 bar 10.5 AFR with large intercooler equ 320BHP. But turned down to 1.5 bar to make it more drivable and save the tyres
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jeffw
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| posted on 22/4/17 at 06:29 AM |
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Not turboed but 10.5:1 on 1.4bar of boost. 400BHP/300 ft lb out a blacktop Zetec.
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