defrag010 Posted August 28, 2006 Share Posted August 28, 2006 I bought my 1980 280zx with a blown headgasket, and it came with a freshly rebuilt P90 head to put on. It's not running yet, but I had originally planned on putting the P90 on. However, this car is going to stay n/a and is basically going to be a daily driver which won't recieve very many mods. Should I sell the P90 head and use the N47? If so, how much do you think I could get for the P90? It's fresh out of the machine shop, and has upgraded outer valvesprings on it but doesn't have a cam. Quote Link to comment Share on other sites More sharing options...
Administrators BRAAP Posted August 28, 2006 Administrators Share Posted August 28, 2006 If that engine is original, most likely the block has the dished pistons and if so, then keep the N-47. For an N/A application with the OE dished pistons, the standard Z car N-47, the N-42 or the E-88 are really your only options. The P-90 with those pistons gives you nothing in the way of performance unless you add boost as it will drop your compression ratio “below” 8:1. If long term performance enhancements are in your future including an engine rebuild, then I recommend you keep the P-90 and keep a sharp eye for a set of the European flat top pistons. HTH, Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.