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Old 03-29-2004, 03:10 AM   #1
wreckless
 
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B20 Turbo...

I've been asking around and i've given up on adding vtec to my B20 engine... so im going turbo... just a simple question... ppl have been saying that i can run trubo with the stock internals on the b20... if i just run some where under 10psi... is this true and also does any one know the pressure ratio for the b20 is it 9:1???
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Old 03-29-2004, 08:56 PM   #2
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10 will be be safe man. I dont care what people say, but these B20's will handle great boost. Start off at 7 psi. Slowly work your way up. Get a decent management. None of that FMU crap.....
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Old 03-29-2004, 10:25 PM   #3
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b20's are an underrated block. go for it.

a b20 built with like a GSR or Type R head would be killer...
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Old 03-30-2004, 05:21 AM   #4
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do i have to resleve the block? my friend wants to know what the compresion ratio is... 9:1 or 10:1
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Old 03-30-2004, 11:24 AM   #5
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b20 compression is NOT 10:1
prolly the 9:1...
not sure though
but it aint 10
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Old 03-30-2004, 11:26 AM   #6
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http://www.classicvolvo.com/onlinema...enginespec.htm

engine specs there.....
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Old 03-30-2004, 11:45 AM   #7
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If you have the money, sleeve it. It will be safer that way. B20 cylinder walls are thin...
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Old 03-30-2004, 12:08 PM   #8
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b20b is 8:8:1
b20z is 9:6:1

Like I said before, the walls on b20s die around/above 6psi so you will HAVE to resleeve.
The rest of the internals will be fine up to 12psi daily driven
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Old 03-30-2004, 03:08 PM   #9
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^^^^ what they said
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