compression test on JDM B18C R?

Enemy · Post by **Enemy** » January 24th, 2005, 8:22 pm

When you do a compression test on your B18C R
what ratings or numbers are you suppose to get?

Bbasso · Post by **Bbasso** » January 25th, 2005, 9:41 am

I did a test on my stock usdm motor and got between 230 and 235 for all four.
the key is not to have to much variation (sp?) between them.

Enemy · Post by **Enemy** » January 25th, 2005, 5:15 pm

Thanks for the reply

Yesterday the compression test was done and got over 300 on each cyc.

The motor was just purchase and the seller said that the engine is
practically new. Its a 2000 JDM motor - does this sound right

ITRacer121 · Post by **ITRacer121** » January 25th, 2005, 6:07 pm

that is weird? my USDM did 230 all across...then I put in high compression valves and milled the head and im only doing 265 across?

I would check a different compression tester

Heps · Post by **Heps** » May 26th, 2005, 4:58 pm

Yeah that seems to be a bit high, I have 220 across all my cylinders

Trev-R · Post by **Trev-R** » March 6th, 2007, 3:33 pm

I have a B18C-R and it did 250 across, you must have something in there to make 300 across.