I just bought a 280zx motor that is a f54 block with a p-79 head. It has 60k miles on it. I have a 73 240z with a e-88/l24. It has 160k miles on it. I am definately going to put the l28 block in the car. I am just trying to decide wether to use the p-79 or the e-88 on the motor. The compression on the l24 in the car right now is low but went up when you put oil in the chambers. But on the fourth cylinder the compression did not raise. So I am assuming that there is a valve problem on that cylinder. My question is should I use the p-79 that needs no work, but buy a new header for $200, or should I use the e-88 on the l28, but fix the one valve? Also, how do I know if the valve seats are worn?
Thanks
Thanks