Post by
GranAutismo »
https://forums.nicoclub.com/granautismo-u291375.html
Tue Aug 11, 2020 8:38 pm
So I dropped my NA motor in after repainting my engine bay. While the motor was out, I replaced:
All 4 Cam Seals
Front and Rear Main Seal
Rebuilt Lifter
VTC O-Ring
Oil Tree O-Ring
Timing Belt
Belt Tensioner
Before all this, my car ran. 180 on all cylinders except cylinder 6 (130psi). Drove it to work for a couple days before I decided to take it out to paint the bay.
Since the motor is in, cylinders 1,3, and 5 fire, but have a low compression of 90PSI. The cylinders 2, 4, and 6 have NO compression. I checked the CAS, injectors click after every turn. Injectors on the driver head read 12.2-12.4ohms. I have all new Sparkplugs and Coils so I did confirm I had Spark and Fuel. Injector connectors read 11.8v in ON position. The car turns on and stays on, but with only the passenger side head doing all the work. When the car is running (stays on for awhile before it dies) the left bank sounds as if it’s smacking the valves, so I removed the timing covers to expose the timing belt BUT everything lines up perfectly. The timing marks on the cam gears and even on the crank. I even counted the teeth in between each gear. The Intake Valves are straight, and the Exhaust Valves seem good too (bought an endoscope and fed it through the manifolds).
I have yet to do a leak down test since I don’t have the proper tool to do so, but I’m sure that’ll help. The last thing I can think of is maybe I put the exhaust cam wrong when I rebuilt the lifter or either the dowel broke, causing the exhaust cam to stay stationary while the gear moves freely with the timing belt BUT isn’t there a bolt that’s torqued down to 90ft-lbs under the VTC Cover? The dowel is just there to align it with the gear? If timing is correct, then should my valves be bent? If so, why do I have 90PSI on the right head?
If you guys know anything, please let me know. The last thing I’ll do is send it to @SZRpro, a shop that specializes in this chassis
If you’re interested on how it sounds, my IG is (3oozx.na). Yes, those are the letters “o” instead of “0”