Raising The Redline On The Z

Hotrodz · 06-15-2021, 05:50 PM

This is bigger deal when boosted because of torque numbers and things start to get out of balance quickly with boost. That said with the right parts and a good rune 8k is doable.

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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.

1slow370 · 06-18-2021, 08:42 PM

That's why I was so gung ho on the liberty faceplates. I was even getting ready and buying tools to do the install for guys and then they told me they weren't ready to release the parts and had to do it in house at $2300/box and that was a heavily discounted rate. I'm on the call back list for when they actually decide to sell parts

According to their standard pricing a dog engagement z box once it comes to market is sub $1000 for 1-4gear in parts

Also they have a 6+month lead time. You're not gonna sell **** at that rate

I was going to buy 3 transmission's worth of parts and had to pass beacuse no way In hell am I waiting that long for 24 parts

This is the real reason I cancelled my plans to do a sequential conversion on the cd009 box. I have the linkage and shift spools drawn up but it isn't worth **** if I can't get affordable dog gears

06-15-2021, 05:50 PM	#1 (permalink)
Hotrodz A True Z Fanatic Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684386	This is bigger deal when boosted because of torque numbers and things start to get out of balance quickly with boost. That said with the right parts and a good rune 8k is doable. Sent from my SM-G965U using Tapatalk Rusty and Spooler like this. __________________ *Fast Intentions TT Installed and Tuned by Seb at SpecialtyZ 610whp 560tq:\|Fast Intentions 3" TT-TDX*\|SpecialtyZ/Fast Intentions 72 Row Oil Cooler\|SZ 6 Puck Clutch & Flywheel\|3GsCustoms\|Z1\|Wavetrac\|Hotchkis\|Whiteline \|Blitz\|Fortune Auto 500\|Fujimura\|SPL\|H&R\|TK\|TWM\|RPM Rollbar\|Sparco\|Next Level Performance\|TrackSpec\|AeroFlow Dynamics\|Pioneer\|

06-17-2021, 06:03 PM	#2 (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

06-18-2021, 08:42 PM	#5 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	That's why I was so gung ho on the liberty faceplates. I was even getting ready and buying tools to do the install for guys and then they told me they weren't ready to release the parts and had to do it in house at $2300/box and that was a heavily discounted rate. I'm on the call back list for when they actually decide to sell parts According to their standard pricing a dog engagement z box once it comes to market is sub $1000 for 1-4gear in parts Also they have a 6+month lead time. You're not gonna sell ** at that rate I was going to buy 3 transmission's worth of parts and had to pass beacuse no way In hell am I waiting that long for 24 parts This is the real reason I cancelled my plans to do a sequential conversion on the cd009 box. I have the linkage and shift spools drawn up but it isn't worth if I can't get affordable dog gears Rusty and Hotrodz like this. __________________ ANSWER PRICE LIST** Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50 Last edited by 1slow370; 06-18-2021 at 08:53 PM.

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