Stock CR of an M42

Discuss general engine, turbo and supercharger conversions in this section

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MarkT
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Post Thu Aug 27, 2009 11:01 am

Just a quick one. Tried searching and the function is still beyond me!

Thanks

Mark
E30 340i project in progress now 328 turbo
Breaking '97 728i Auto box, tubular manifolds and other morsels.
For sale E34 M50 sump, pick up and dip stick. PM for de
E30Mark
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Post Thu Aug 27, 2009 11:23 am

10.1:1 :D
1 & 2 bed flats in Bournemouth areas, with parking
PM for details
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MarkT
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Post Thu Aug 27, 2009 12:59 pm

Cheers mate.
E30 340i project in progress now 328 turbo
Breaking '97 728i Auto box, tubular manifolds and other morsels.
For sale E34 M50 sump, pick up and dip stick. PM for de
ShepsEvo3
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Post Thu Aug 27, 2009 1:03 pm

E30Mark wrote:10.1:1 :D
How low is that :D
E30 M3 Unichip Alpha N style conversions, this is the ultimate for extracting the best out of your S14 M power car.
Also, Live mapping of your Standard Motronic ECU for optimising all your modifications.
www.sabre-tuning.co.uk
jaistanley
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Post Thu Aug 27, 2009 3:05 pm

What's the S50 B32? I can't remember.. Something like 11:1 or 11.5:1 isn't it? :P
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Jon_Bmw
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Post Thu Aug 27, 2009 6:13 pm

I thought that wasn't too bad. The most common(and powerful) mi16 is 10.4:1

You really need a higher compression ratio to get the most out of nice cams, as we found to our detriment! :(

Still it is better than an m20 :giggle:
ShepsEvo3
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Posts: 1881
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Location: Bristol/Wiltshire

Post Thu Aug 27, 2009 8:32 pm

jaistanley wrote:What's the S50 B32? I can't remember.. Something like 11:1 or 11.5:1 isn't it? :P
Not quite sure, but in the region of. Latest Audi S3 is 10:1 or even 10.5:1 and has 1bar of boost as standard :D

Diesels are 22:1 to 28:1 or higher winkeye
E30 M3 Unichip Alpha N style conversions, this is the ultimate for extracting the best out of your S14 M power car.
Also, Live mapping of your Standard Motronic ECU for optimising all your modifications.
www.sabre-tuning.co.uk