Mrmerlin

what is the year of your car?? what is the engine your working on 16v or 32v?

Imo000

I wouldn't do that if I were you. This is how you can destroy a good torque wrench. Number one rule is not to use a torque wrench as a breaker bar and number two is to always turn it back to 0 after use.

MPDano

Hi MrMerlin, the 928 is a 1981 and it's a 16V.

wg928

where are you? someone close could link up with you to guide / help out b 4 u twist your splinkuty

Leon Speed

To clarify, can you turn the engine with the spark plugs out?

MPDano

I am in San Diego California, specifically in El Cajon. That would be awesome for someone my area to come take a looksy. Goin on vacation in a couple days, will be back after the 4th of Jan.

MPDano

Hi Arya, yup all plugs are out and on a piece cardboard, so I know where they went. Since a couple of them were questionable.

Mrmerlin

Have you pulled the dipstick to check the engine oil for metal to do this the best way is just after the engine has been running however since it wont turn(your engine) you can still try but you may not get very good results.
Put some oil from the dipstick on a black piece of cardboard or black plastic, go into the sunshine and look for sparkling pieces in the oil if you find them then is a good bet that a bearing has disintegrated or is in the process of doing this. For better results you can remove the oil filter and pour some of the oil on the same black piece of cardboard , finally you could cut the filter open and look for bigger pieces if you find small pieces . If however you dont find metal sparkles then that could indicate a headgasket has let coolant fill one or more of the cylinders and the piston is seized in the bore, and since you have a non interference engine even if the belt was broken it shouldnt let the valves hit the pistons. Can you give any more info about this car and from where you got it and under what circumstances?

MPDano

A little history on it. I just bought the 928 yesterday from a seller who had it for around 2 months. He bought it from kid who had it for a few months also. The seller stated that he did some research on it a actually met the original owner. He said it has been smogged and passed in the '90's. In 2002, failed and in 2003, it failed again according to Carfax. Original owner said he had an overheat issue and changed the radiator for a Corvette one. Thats about all I know. Like I said, 1 of the plugs were a little wet with not much carbon deposit like the others. I did pull the dip stick to see the oil and its milky "consistent with a blown head gasket." I think you are correct and that it has seized at that suspect cylinder with the wet plug. I put about 15 can squirts of Marvel Mystery oil in each cylinder in an attempt to loosen the pistons. I guess I will see after the holidays if this helped.

the flyin' scotsman

+1..........always return the t.wrench to zero after use.

BTW...........the crank nut size is 27mm...........use the correct tool for the job or there'll be grief.

John Struthers

MPDano,
Then there is the dreaded head etching/migration of coolant.
The horrors of crank walk ( uncommanded internal machining of mains and journals).
Who knows what lurks in the pan...?
Good luck guy.
Xlot,
218 ft lb (Lb Ft)?
Is that the conversion from 295 Nm?

MPDano

That would be next thing I pull off if I get nowhere. I'm gonna let it sit in the Mystery Oil over the holidays and give it a turn when I return in 2008.

Imo000

Two weeks ago I bought a project car too. The trust bearing (bottom half) broke and then slowly the crank ate away the top half. In two weeks it managed to move so much forward that it pushed out the front crank seal and resulted on a major oil leak (1/2 gal in 2 min). The owner was told that the engine siezed and that she should sell it. I bought it for next to nothing and decided to look and see if the engine is salvagable. It was runing but after taking it apart from the botton it was apperant that it wasn't salvagable. The colour of the oil was like a nice bronze metalic paint! BUT here's the good part.....it wasn't a 928 but a Mazda Protege and managed to score an replacement engine for a gallon of Mobile 1 and an oil filter (~$65)!

Shark Attack

I dont know if anyone answed yet but it is 27MM

MPDano

Yes sir it was. I had a 1-1/16" that also worked like a charm. Thanks for all the great feedback