I recently had the Isuzu 5speed rebuilt in my 99 Z24 before gettin the car together. After havin the car tuned and moving the rev limiter to 7k I discovered that the tranny would not shift past about 6500rpm. I use synchromesh tranny fluid and check it all the time to make sure it's full but if I rev to 7000rpm and try to up shift it just grinds and will not go into gear. Is there a different fluid I should be using and something that I should do the tranny? I read about people spinning 7k or better all the time but my tranny just won't have.
Sounds like clutch drag...
Chris
'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08
Like a slave cylinder issue?
No. Clutch drag.
Short, you need a new clutch, may have cracked the disc, a plate bolt could be coming out... the "what if's " don't end.
its a isuzu trans.. that what? A half hour to get it out at with out a lift?
Don't over think, investigate.
I am assuming you did bleed the clutch out, and pumped the peddle back up, keeping the bottle full...
Chris
'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08
sounds like good ole isuzu syncro grind to me...
I choose the technology built for land speed records... not the technology built to save on emissions and gas mileage.
-Z Yaaaa- wrote:sounds like good ole isuzu syncro grind to me...
Solution to this? Lol or am I just gonna have to force it forever.
I'd like to upgrade clutches but money has become alittle tight for the rest of the year so it'll have to wait.
No help here, just shift at 6500. LOL If you find out what's doing it let us know.
My limiter was raised but I never wait to shift at it, but you have cammed it or what ever and that's why you want to shift at that high RPM.
I shift to my torque/hp curve which is about 6000 ish that way the next gear drops in at high tq/hp range.
only fix is to rip apart the trans and replace the worn syncro rings, unfortunately.
I choose the technology built for land speed records... not the technology built to save on emissions and gas mileage.
I've been shifting at 6500 and it seems ok. I'm in the process of finding a spare tranny
