Guest Cronic Posted May 16, 2004 Share Posted May 16, 2004 I cant find this anywhere, I googled and came up with 3 differnet results. I always thought it was 7.1:1, but I've read 7.4 and 7.3, and a friend told me it was 7.8:1... Who knows for sure?? Quote Link to comment Share on other sites More sharing options...
Tony D Posted May 16, 2004 Share Posted May 16, 2004 FSM says 7.4:1 7.1 and 7.8 are just plain wrong. 7.3 is close enough to say "what does it matter?" Quote Link to comment Share on other sites More sharing options...
Guest Cronic Posted May 16, 2004 Share Posted May 16, 2004 Thank you for that clarification sir. Quote Link to comment Share on other sites More sharing options...
Tony D Posted May 16, 2004 Share Posted May 16, 2004 Sir? I'm no sir! and no, I'm no ma'am either 8) Quote Link to comment Share on other sites More sharing options...
Guest Cronic Posted May 16, 2004 Share Posted May 16, 2004 well thanks brother. Quote Link to comment Share on other sites More sharing options...
onephatz Posted May 17, 2004 Share Posted May 17, 2004 the 280zxt had 7.4:1 the z31 300zxt had 7.8:1 the z32 300zxtt had 8.5:1 Quote Link to comment Share on other sites More sharing options...
Clifton Posted May 24, 2004 Share Posted May 24, 2004 the 280zxt had 7.4:1 the z31 300zxt had 7.8:1 the z32 300zxtt had 8.5:1 I've heard, from a reliable Z31 nut that the 87-89's have a little higher compression along with a smaller turbo and less boost. Don't remember the exact CR other than low 8's. Quote Link to comment Share on other sites More sharing options...
Guest Cronic Posted May 24, 2004 Share Posted May 24, 2004 I think the 88-89 Z31's have a t25 on them. Quote Link to comment Share on other sites More sharing options...
onephatz Posted May 24, 2004 Share Posted May 24, 2004 I think the 88-89 Z31's have a t25 on them. yea from 81-85 they were all the standard t3 and only oil cooled in mid 85 they added water cooling to the t3 mid 85 thru 86 were all t3's oil and water cooled 87-89 used a garett t25. it is a little smaller but the engine hp rating went from 200hp --> 205hp. what makes this difference I don't know. jesse Quote Link to comment Share on other sites More sharing options...
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