Well, I finally did my compression check before I go into restoration mode. 1984 AU 42 with Turbo (installed about 3000 km ago), truck has ~370,000km, guessing all original.
Did the test with the Harbor Ft. cheapy comp gauge, edic unplugged, all plugs out, crank 6-10revs until gauge is stable.
Did the first set cold. 1-420, 2-390, 3-390, 4-420
Warmed up close to operating temp (fast idle, did not drive it)..1-460, 2-420, 3-430, 4-460
What do you guys think, #2 does seem the weakest (seems to take a couple more revs to top out). The truck runs great, no smoke, burning oil, etc. that I can see. After the turbo install, I do have a little more blow by (or oil drip from the tube), but sounds like that is normal.
I am planning on a full resto (like Rob's if I can pull it off), plan was if the numbers looked pretty good and close, I was not going to open up the motor, It sounds like close is supposed to be within 10-20psi of each other.
If the recommendation is to take a look, what are the norm's (Head VS Block issues).
Thanks
Troy
Did the test with the Harbor Ft. cheapy comp gauge, edic unplugged, all plugs out, crank 6-10revs until gauge is stable.
Did the first set cold. 1-420, 2-390, 3-390, 4-420
Warmed up close to operating temp (fast idle, did not drive it)..1-460, 2-420, 3-430, 4-460
What do you guys think, #2 does seem the weakest (seems to take a couple more revs to top out). The truck runs great, no smoke, burning oil, etc. that I can see. After the turbo install, I do have a little more blow by (or oil drip from the tube), but sounds like that is normal.
I am planning on a full resto (like Rob's if I can pull it off), plan was if the numbers looked pretty good and close, I was not going to open up the motor, It sounds like close is supposed to be within 10-20psi of each other.
If the recommendation is to take a look, what are the norm's (Head VS Block issues).
Thanks
Troy