What should the compression read on a NA Supra? Mine are between 170-175 and fall after cranking.
S Slasher48 · Guest Joined Jan 1, 1970 · 0 Posts Discussion Starter • #1 • Dec 20, 2001 What should the compression read on a NA Supra? Mine are between 170-175 and fall after cranking.
R RacerRT · Registered Joined Nov 3, 2001 · 34 Posts #2 • Dec 20, 2001 Standard compression is 186, minimum is 156. Your just taking the highest the guage reads on each cylinder... so you should be fine.
Standard compression is 186, minimum is 156. Your just taking the highest the guage reads on each cylinder... so you should be fine.
S Slasher48 · Guest Joined Jan 1, 1970 · 0 Posts Discussion Starter • #3 • Dec 20, 2001 Thanks. So, it doesn't matter if it falls rapidly?
R RacerRT · Registered Joined Nov 3, 2001 · 34 Posts #4 • Dec 20, 2001 Nope, it will fall, because you are losing cylinder pressure as you crank. Your just looking for the highest reading, and should only need to turn it over for 2-5 seconds per cylinder.
Nope, it will fall, because you are losing cylinder pressure as you crank. Your just looking for the highest reading, and should only need to turn it over for 2-5 seconds per cylinder.