Compression test

[Albie S2]

Hi

I did a compression test and what i found is the following

nr1 cyl 9.2
nr2 cyl 9.2
nr3 cyl 9.1
nr4 cyl 10.1
nr5 cyl 9.8

what is the ideal compression on a 3b and should i rebuild the engine ???????????????

thks chris sa

[Mark Halligan]

Be sure to carry out test with engine warm approx 80C, and throttle OPEN.

• specified values 9.0 to 13.0 bar
  
• lowest servicable pressure 7 bar
  
• max difference between individual cylinders 3 bar

These are out of the AAN workshop manual, but should broadly apply to the 3B.

HTH