oscxj220

hey guys

Last night my trans started grinding in 1st 2nd and 3rd and i cant downshift without it grinding. Bad Synchro mesh? Is it cheaper to replace the trans then rebuilt it? Pearl City Trans over her quoted like 2k maybe more for a rebuild. Oh btw its a 1990 N/A. I know its common for the synchros to go bad in higher gears for 90-94's?
thanks

snwbrderphat540

2k?!?!?! change teh fluid first, see if that helps you out, did for me. and im sure its cheaper to find a used tranny than get it rebuilt but then you dont know what your getting for sure or how long it will last.

oscxj220

cool. ill try that. thanks

snwbrderphat540

and use quality fluid like MTX redline or BG synchroshift, or mix em. lol

Goofyz

you would probably be better off getting a tranny used, or if you can spend the 2 grand get a brand new one here www.conceptzperformance.com, they sell them new for about 1800$ I wouldn't spend 2k on a rebuild.

oscxj220

shipping to hawaii = X_X lol

BRAAP

Just a 2nd thought on this situation…

When you are sitting still topped, with the clutch in and the car in 1st gear, does the car creep forward? Also, when trying to put it into gear from neutral at a stop, is it difficult or harder to get into gear or grind?

If the clutch disc comes apart, spring holders separate etc, when you push in the clutch, the disc will **** and still rub against the flywheel, thus acting if it is isn’t fully disengaging. This will cause the car to creep while at a stop in gear, grind all gears during shifts etc.

Just making sure all bases are covered.

ZLover4Life

2nd BRAAP's comments, but I'd like to add another. I'm assuming this car is manual. How does the clutch feel? Is it feeling lighter than it should? I'm wondering if you've simply got a hydraulic leak in your clutch system... that would definately cause grinding due to the clutch not disengaging completely (and the grinding would go away in higher gears due to the closer gear ratios making gear changes more easy).

oscxj220

when the car is full stop its easy to engage any gear with no grinding. Also this morning it wasnt grinding untill the trans warmed up. as for the car creeping, just check and its not doing that

Goofyz

they sell new cars in Hawaii?

oscxj220

yes. we have new cars. lol

NAIIZeater

My tranny was doing somethin like that when i picked it up, then i changed the fluid to mt-90 and it went away. I bought at redline (KALIHI) on Waikamilo, for for 8 bucks a bottle.

oscxj220

thanks guys.

NAIIZeater what color is your Z?

NAIIZeater

Factory Sky Blue

oscxj220

today i attempted to change the trans fluid only to find the previous owner put rgb around the filler nut. didnt have time to check, but is there a way to fill the transfluid from the top. gear linkage area? btw its a 1990 NA
thanks

chicopriest

Dunno if you've seen this.

snwbrderphat540

dunno, why your quoting me, i just said try a fluid change before you go and do some of the other ideas, never said if you want a good tranny dont buy from courtousey

oscxj220

i managed to change the fluid. it helped alot but its still bitting if you get a little eager shifting and if you downshift. Time for new trans!

Goofyz

If you are going for a new one, get a New one from Nissan for the 2 grand they would charge you for a used rebuild...cheaper than Courtesy

follow the link:

http://www.conceptzperformance.com/C...224.33.125.140

scott_91tt

I am just curious, how many miles are on your clutch & pressure plate? The difficulty you are having to me sounds very symptomatic of a failing pressure plate... For what it's worth, my approach to auto diagnostics is the philosophy of "think horses, not zebras". While you could certainly have an internal trans problem - I think it's fair to say that these MT's are not prone to failure. I'd put money on the pressure plate being your culprit though

chicopriest

Whoops, I was originally going to support your idea then switched to "wait, didnt i see this at courtesy parts"