No Compression

[fiberglasscivic]

I still haven't check the compression myself, my lazy friend hasn't called the guy that's looking at his car even. I've got to wait and see if this guy comes up with a soulution other than replacing the engine. I'll let you guys know when he gets in touch.

[nismo_pilot]

ok im going to tell you two things, to get ZERO compression your valves are still open during the compression stroke of the engine, which indicates bad cam timing, go buy a timing belt ( to the best of my knowledge nissan didnt switch to a chain until the newer b15 chassis series cars) and install it, find a repair manual and get the factory timing specs for the intake and exhaust cams (if it is DOCH) re-time the car to factory specs and then do the trick mentioned above with the fuel pump fuse to clear the cylinders, re-install the fuse and crank the car up and give it back to your friend, dont post again until you have made an effort to fix it

[fiberglasscivic]

Ok the guy that gave me the zero compression didn't know what he was talking about. The other mechanic said that it came back low but not none. He did some prowling and found a crack in the head. I need to replace the head. My friend decided that he didn't want to deal with it so I bought the car for $500 and I'm gonna fix it. I'm looking for a replacement head so if anybody's got one let me know. I'll start looking around for good prices.

[fiberglasscivic]

Should I change the head bolts?

[Andrewh]

That is a debate topic. I would since you have an aluminum head. Can't over torque that much. Plus any streching would be handled by a good torque wrench.
I would wonder why the head cracked though. Loss of coolant? overheating, something caused it.

[fiberglasscivic]

My best guess would be excessive use. The guy put 10,000 miles on it the last month that he drove it. He was constantly going places with 3 or 4 other teenagers in the car. It was sitting close to 200,000 miles before it blew. This guy doesn't get any basic maintenance done. He's had the car for a year now and never changed the oil.

[nismo_pilot]

glad to see you got some useful information, sorry about the head though, that = teh suxor...........when you replace the head make sure you flush the coolant and stuff, if he didnt do any maintaining there is probably some sludge that kept the coolant from reaching the head, which may explain your cracked head, i would reccomend arp head bolts, they distribute the torque evenly across the head so less chance of a repeat