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50kpa on idle

Started by Senchiro, April 26, 2012, 04:57:03 PM

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Senchiro

April 26, 2012, 04:57:03 PM
Hello.I have a m20b20 engine with a charger.What can i do to make good kpa? 50 is to many(( 800rpm, 20deg on idle.If without charger, it is 46kpa.

GintsK

#1
April 26, 2012, 08:22:33 PM
What is wrong with 50Kpa?  ???

Senchiro

#2
April 27, 2012, 04:40:47 AM
It is not normal pressure on idle i think? normal is near 28-30kpa?

GintsK

#3
April 27, 2012, 06:11:18 AM
It depends from cam. Narrow cams with zero overlap gives lowest absolute pressure. With overlap increase pressure rises. In some cases it can be in 90...100kpa range.

Gints

Senchiro

#4
April 27, 2012, 07:47:18 AM
cam is stock )) may it be from changed  degree of compression? it was 9.4, now is 8.0

Jamo

#5
April 27, 2012, 10:13:16 AM
I would say that is normal pressure

mattias

#6
April 27, 2012, 05:02:14 PM
50 is perfectly normal for a stock M20. It will loose some from the lower c/r.
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