Shifting 1st gear to 2nd at 7500rpm

lauj · 03-28-2012, 08:42 PM

Quote:

Originally Posted by andre12031948

For a long time I had the same problem while drag racing. Sometimes it was fine, other times even using BOTH hands would not get it into 2nd. gear. Lost a few trophies because of it

One dealer said no problem found. After a long & frustrating time I found a dealer that let me power shift, saw the problem & got me a brand NEW (under warrenty)trans. Find a performance friendly dealership

I wish I had a dealership like that

fuct · 03-29-2012, 10:57 AM

Quote:

Originally Posted by andre12031948

I have an 08 350z with STOCK intake & STOCK exhaust with test pipes. My car has only 280's H.P. yet I hold the 07/08 HR 350z 1/4 mile record at 12.504@110mph. I've done many 12.5's/12.6's at Atco & Raceway Park N.J. I do use slicks, but have done many 12.7's/12.8's without them in summer weather. I also hold the 60' record at 1.69. The main reason for my times has to be my driving. I am bragging BUT there is no other way to say it. I don't shift hard but I can shift faster than you can blink your eyes. There is an older vidoe of me driving with a camera on my helmet, and the other of my tach & shifting. It was not of my fast times but it's worth seeing. Just search andre12031948 & you can check them out.

NO LONGER ON JUST SEARCH - It is however on you tube search - "shifting like Vin Diesel"

sorry I didnt know i was talking to a record holder, my bad :P

andre12031948 · 03-29-2012, 02:04 PM

Quote:

Originally Posted by fuct

sorry I didnt know i was talking to a record holder, my bad :P

Well ok, just don't make it a habit

Long ago when I was young, I had sex 6 times in one night. Could that also be a record? Please don't ask if I was QUICK then too.

Mai-z · 03-29-2012, 02:17 PM

Quote:

Originally Posted by andre12031948

I have an 08 350z with STOCK intake & STOCK exhaust with test pipes. My car has only 280's H.P. yet I hold the 07/08 HR 350z 1/4 mile record at 12.504@110mph. I've done many 12.5's/12.6's at Atco & Raceway Park N.J. I do use slicks, but have done many 12.7's/12.8's without them in summer weather. I also hold the 60' record at 1.69. The main reason for my times has to be my driving. I am bragging BUT there is no other way to say it. I don't shift hard but I can shift faster than you can blink your eyes. There is an older vidoe of me driving with a camera on my helmet, and the other of my tach & shifting. It was not of my fast times but it's worth seeing. Just search andre12031948 & you can check them out.

NO LONGER ON JUST SEARCH - It is however on you tube search - "shifting like Vin Diesel"

I'll be the judge of that. I happen to have a few records for the fastest blinking eyes.

Come at me!

Quote:

Originally Posted by andre12031948

For a long time I had the same problem while drag racing. Sometimes it was fine, other times even using BOTH hands would not get it into 2nd. gear. Lost a few trophies because of it

One dealer said no problem found. After a long & frustrating time I found a dealer that let me power shift, saw the problem & got me a brand NEW (under warrenty)trans. Find a performance friendly dealership

dayum boy!

wilsonp · 03-30-2012, 06:12 PM

Quote:

Originally Posted by corbin09

Do our cars even make power after 7300ish RPM?

The torque curve is so close to flat that being in the lower gear as long as possible is always best.

For the 7AT, at 125MPH in 4th at 7500 you drop to 5307 in 5th but your transmission torque drops from 863 to 705 even though you are at near peak torque in 5th.

Lower gearing always wins unless your torque curve has a large small peak. It's why the NSX is very quick even though it doesn't feel like it.

corbin09 · 03-31-2012, 09:47 AM

That makes sense... I just feel like when I hit around 7.5-7.8k rpm the car really doesnt have that much left in it.. maybe it is just how my car is tuned.

roplusbee · 03-31-2012, 02:02 PM

I have only redlined a few times. The butt dyno reported that it was pulling all the way to the top. I bounced off the rev limiter trying to get out of a group on 190 near Fort Hood. For some reason people like to ride in packs...............I didn't have any trouble shifting from 1-2 when @ about 7-8k.

Dallaz · 04-12-2012, 04:49 PM

I also had trouble shifting to 2nd quickly at 6.5-7.5k RPM when at the 1/4 mile. Every other gear it goes smooth as butter and allows shifts much faster. I've driven plenty of high performance cars to know that this is unusal.

chrischhorn · 04-13-2012, 12:13 AM

I thought i was one of the few with this issue.....but sometimes mine will drop in like butter and other times it wont drop or it will grind when it drops. I was thinkin of having the dealership rebleed the clutch or something....Even at times goin into others gears just doesnt feel as smooth but then it feels smooth as can be at others......But if i double pump the clutch, makes for a smooth shift every time.

ShinyBlueZ · 04-13-2012, 12:28 AM

Quote:

Originally Posted by andre12031948

NO LONGER ON JUST SEARCH - It is however on you tube search - "shifting like Vin Diesel"

Lies. I actually went on YouTube and searched for it and I ended up watching "Get Abs Like Vin Diesel." I'm starting the program tomorrow.

Davey · 04-13-2012, 07:02 AM

I don't have any problem shifting at redline from 1st to 2nd at all. However I don't powershift or aggressively slam the car into gear because that's just abusive, no transmission in a production car is made to take that kind of abuse.

Well, not since the old Muncie 4-speeds, anyway.

DavidZ370 · 05-13-2014, 01:19 AM

Everytime i read your posts my IQ drops to unhealthy levels

03-31-2012, 02:02 PM	#22 (permalink)
roplusbee A True Z Fanatic Join Date: Dec 2009 Location: Killeen, TX Posts: 2,360 Drives: 2007 350Z NISMO Rep Power: 23	I have only redlined a few times. The butt dyno reported that it was pulling all the way to the top. I bounced off the rev limiter trying to get out of a group on 190 near Fort Hood. For some reason people like to ride in packs...............I didn't have any trouble shifting from 1-2 when @ about 7-8k. __________________ 2007 350Z NISMO #0618: Zerolift \| UPREV \| F.I. \| Greddy \| Competition Clutch \| Injector Dynamics \| Aeromotive \| Pioneer \| JL

04-12-2012, 04:49 PM	#23 (permalink)
Dallaz A True Z Fanatic Join Date: Jun 2011 Location: North Dallas Posts: 1,272 Drives: 09MontereyBlu370z6MT Rep Power: 16	I also had trouble shifting to 2nd quickly at 6.5-7.5k RPM when at the 1/4 mile. Every other gear it goes smooth as butter and allows shifts much faster. I've driven plenty of high performance cars to know that this is unusal. __________________ AeroJacket Lip Kit \| GTR switch \| NISMO S-Knob \| Blacked-Out-EVERYTHING\| 5% Tint \| Carbon Fangs/Upper Trim \| VOSSEN CV3's \| Painted Headlights \| CF Diffuser

04-13-2012, 12:13 AM	#24 (permalink)
chrischhorn A True Z Fanatic Join Date: Jan 2012 Location: Mililani, HI Posts: 1,566 Drives: 2014 Juke Nismo RS Rep Power: 17	I thought i was one of the few with this issue.....but sometimes mine will drop in like butter and other times it wont drop or it will grind when it drops. I was thinkin of having the dealership rebleed the clutch or something....Even at times goin into others gears just doesnt feel as smooth but then it feels smooth as can be at others......But if i double pump the clutch, makes for a smooth shift every time. Last edited by chrischhorn; 04-13-2012 at 12:28 AM.

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03-31-2012, 09:47 AM	#21 (permalink)
corbin09 Track Member Join Date: Jun 2009 Location: Dallas tx Posts: 665 Drives: 370z Rep Power: 281	That makes sense... I just feel like when I hit around 7.5-7.8k rpm the car really doesnt have that much left in it.. maybe it is just how my car is tuned.

04-13-2012, 07:02 AM	#26 (permalink)
Davey A True Z Fanatic Join Date: Apr 2011 Location: Indiana Posts: 3,766 Drives: '15 NISMO 6MT Rep Power: 117172	I don't have any problem shifting at redline from 1st to 2nd at all. However I don't powershift or aggressively slam the car into gear because that's just abusive, no transmission in a production car is made to take that kind of abuse. Well, not since the old Muncie 4-speeds, anyway.

05-13-2014, 01:19 AM	#27 (permalink)
DavidZ370 A True Z Fanatic Join Date: Oct 2013 Location: [= Posts: 1,065 Drives: 17' CWP STI Rep Power: 23	Everytime i read your posts my IQ drops to unhealthy levels