Leakdown Results :(
#1
Leakdown Results :(
Ok so a friend of mine did an LS1 swap into a 240sx. While the motor was out the following was done:
MLS Headgasket
LS7 lifters
Dual springs
Hardened pushrods.
Leakdown comes in at
1-10
2-11
3-22
4-0
5-0
6-11
7-19
8-19
He said that even with the rockers tq# 22lbs he can move them if that makes sense. Well any help would be appreciated. I am think possibly PtV contact? Valeseals? Pushrod length?
Thanks,
Andrew
MLS Headgasket
LS7 lifters
Dual springs
Hardened pushrods.
Leakdown comes in at
1-10
2-11
3-22
4-0
5-0
6-11
7-19
8-19
He said that even with the rockers tq# 22lbs he can move them if that makes sense. Well any help would be appreciated. I am think possibly PtV contact? Valeseals? Pushrod length?
Thanks,
Andrew
#2
the rockers should be loose when the valve is completely shut. the rocker mount is seperate from the rocker arm. take all of the rockers loose and do a leakdown test. that will rule out pushrods and rocker problems. then it only leaves it to rings, gaskets, ptv problems ect. list what cam u have and what heads,
#3
Sorry I can not believe I forgot to add that info! I was running out the door anyhow it is this cam
http://www.neweraperformanceparts.co...V=fthelcamfb|0
Stock heads with MLS gaskets.
After checking it out I worry he has piston to valve issues.
http://www.neweraperformanceparts.co...V=fthelcamfb|0
Stock heads with MLS gaskets.
After checking it out I worry he has piston to valve issues.
#5
With the leakdown gauge attached and pressurized, whip out your mechanic's stethoscope and listen for the source of the leak.
Intake valve = hiss audible at the TB
Exhaust valve = hiss audible at the exhaust manifold
Rings = hiss audible at the dipstick
Intake valve = hiss audible at the TB
Exhaust valve = hiss audible at the exhaust manifold
Rings = hiss audible at the dipstick