« previous next »
Pages: [1]

Author Topic: 50kpa on idle  (Read 7686 times)

Offline Senchiro

  • Jr. Member
  • **
  • Posts: 7
  • BHP: 0
50kpa on idle
« on: 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.
Logged

Offline GintsK

  • Hero Member
  • *****
  • Posts: 1257
  • BHP: 50
Re: 50kpa on idle
« Reply #1 on: April 26, 2012, 08:22:33 pm »
What is wrong with 50Kpa?  ???
Logged

Offline Senchiro

  • Jr. Member
  • **
  • Posts: 7
  • BHP: 0
Re: 50kpa on idle
« Reply #2 on: April 27, 2012, 04:40:47 am »
It is not normal pressure on idle i think? normal is near 28-30kpa?
Logged

Offline GintsK

  • Hero Member
  • *****
  • Posts: 1257
  • BHP: 50
Re: 50kpa on idle
« Reply #3 on: 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
Logged

Offline Senchiro

  • Jr. Member
  • **
  • Posts: 7
  • BHP: 0
Re: 50kpa on idle
« Reply #4 on: 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
Logged

Offline Jamo

  • Full Member
  • ***
  • Posts: 129
  • BHP: 6
Re: 50kpa on idle
« Reply #5 on: April 27, 2012, 10:13:16 am »
I would say that is normal pressure
Logged

Offline mattias

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 1075
  • BHP: 41
    • Sävar Turbo Site
Re: 50kpa on idle
« Reply #6 on: April 27, 2012, 05:02:14 pm »
50 is perfectly normal for a stock M20. It will loose some from the lower c/r.
Logged
Pages: [1]
« previous next »