rebuilt engine comp numbers
#1
707
Thread Starter
Join Date: May 2004
Location: Santa Rosa Ca
Posts: 854
Likes: 0
Received 0 Likes
on
0 Posts
rebuilt engine comp numbers
i did a comperssion test on my first rebuild (12a)
the numbers were 97-100-97
with only 200 miles on break-in with used housings and rotors. oem seals.
it was only cranking @ 120-130 Rpms. what do you think of these numbers? it was only on the rear housing as i did not have enough juice to test the front
how much does cranking effect the test as i know the rpm should be alot higher
the numbers were 97-100-97
with only 200 miles on break-in with used housings and rotors. oem seals.
it was only cranking @ 120-130 Rpms. what do you think of these numbers? it was only on the rear housing as i did not have enough juice to test the front
how much does cranking effect the test as i know the rpm should be alot higher
#2
Old Fart Young at Heart
iTrader: (6)
The FSM has a chart that relates cranking speed to compression numbers. Accurate results require 4 things, engine at operating temp, throttle wide open, altitude compensation and a cranking speed of 250 rpm. Since the chart only goes down to 200 rpm, I'd say your numbers are pretty good.
Thread
Thread Starter
Forum
Replies
Last Post
ncds_fc
New Member RX-7 Technical
1
08-15-15 10:06 AM