Raising The Redline On The Z

1slow370 · 06-17-2021, 06:03 PM

honestly in my experience the best reason not to raise the rev limit on the z is that the trans is garbage at high rev's it shifts like crap past 7000 and the synchros cant handle it. once liberty actually releases their cd009 faceplates that wont be a problem anymore but they are already a year behind on it. other reasons to not rev out a z is there is little to no support for the induction system to actually work up there. you fight the vvel and ecu, cams are expensive, you have to deal with the oil pump which requires tearing the whole motor apart, and all the manifolds on the market don't make appreciable power past 7800. torque starts dropping like a rock. if you look at the dynos from my car vs the dynos from soho's stroker you can see we made roughly the same hp but the curves are massively different.

Hotrodz · 06-17-2021, 07:12 PM

Quote:

Originally Posted by 1slow370

honestly in my experience the best reason not to raise the rev limit on the z is that the trans is garbage at high rev's it shifts like crap past 7000 and the synchros cant handle it. once liberty actually releases their cd009 faceplates that wont be a problem anymore but they are already a year behind on it. other reasons to not rev out a z is there is little to no support for the induction system to actually work up there. you fight the vvel and ecu, cams are expensive, you have to deal with the oil pump which requires tearing the whole motor apart, and all the manifolds on the market don't make appreciable power past 7800. torque starts dropping like a rock. if you look at the dynos from my car vs the dynos from soho's stroker you can see we made roughly the same hp but the curves are massively different.

Agreed! The motors I mentioned are all mated to sequential transmissions. I have all the upgrades to run at 8k but Seb tunes it to 7200. I generally shift at 6800 to 7000 because of said issues.

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THE BULL · 06-18-2021, 10:23 AM

Quote:

Originally Posted by 1slow370

honestly in my experience the best reason not to raise the rev limit on the z is that the trans is garbage at high rev's it shifts like crap past 7000 and the synchros cant handle it. once liberty actually releases their cd009 faceplates that wont be a problem anymore but they are already a year behind on it. other reasons to not rev out a z is there is little to no support for the induction system to actually work up there. you fight the vvel and ecu, cams are expensive, you have to deal with the oil pump which requires tearing the whole motor apart, and all the manifolds on the market don't make appreciable power past 7800. torque starts dropping like a rock. if you look at the dynos from my car vs the dynos from soho's stroker you can see we made roughly the same hp but the curves are massively different.

Valid points, the CD will suffer for sure and after all of what we have discussed there are more cons than pros on a goal oriented car.

Street car from 1-3rd it might be as survivable as a monitored coolant leak.

06-17-2021, 06:03 PM	#1 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	honestly in my experience the best reason not to raise the rev limit on the z is that the trans is garbage at high rev's it shifts like crap past 7000 and the synchros cant handle it. once liberty actually releases their cd009 faceplates that wont be a problem anymore but they are already a year behind on it. other reasons to not rev out a z is there is little to no support for the induction system to actually work up there. you fight the vvel and ecu, cams are expensive, you have to deal with the oil pump which requires tearing the whole motor apart, and all the manifolds on the market don't make appreciable power past 7800. torque starts dropping like a rock. if you look at the dynos from my car vs the dynos from soho's stroker you can see we made roughly the same hp but the curves are massively different. Rusty, Hotrodz and Optimiser like this. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

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