I have a 86 gt 4 sod. I did a getrag 5spd swap. All gears work but reverse.no grinding or weird nosies. I did see the master cylinder has a small leak behind the pedal but clutch pedal still slightly firm. And the rod in the slave cylinder don’t seem to be moving. Could be worn out slave?
If you have the original 4 speed shifter you need to remove the reverse lockout mechanism from the shifter. If all the gears work without grinding or having to push really hard to go into gear with the engine running you do not have a hydraulic problem.
------------------ 86 GT built 2.2 ecotec turbo rear SLA suspension QA1 coilovers on tube arms
[This message has been edited by wftb (edited 03-15-2020).]
Yes this is throwing me for a loop about it working
Ummm... I think we've got us a communication problem here.
There's no way ANY of the gears are going to shift properly while the engine is running if the slave isn't moving... unless the clutch is somehow stuck disengaged.
*UPDATE* slave cylinder does seem to be working but the rod inside of it is not fully extending. Maybe this is because the leak in the clutch master cylinder? Also I did not have the rod that came with the with the 5spd slave cylinder so I used the rod from the 4spd slave. Any difference?
The slave rod on my 86 only moves about 1.25 " roughly. When the hydraulic system developes a leak it usually causes more air ingress than fluid leaking. But the air in the system is what causes the rod to not move very much. Pitting in the slave cylinder bore is what causes most air ingress.
------------------ 86 GT built 2.2 ecotec turbo rear SLA suspension QA1 coilovers on tube arms
*UPDATE* if I push the lever for the cable that moves side to side it will go into reverse gear. Clutch master cylinder has been installed. I did buy the slave from Facebook market. The rod inside of it is only moving half inch
There are literally hundreds of threads here re-hashing hydraulic clutch issues. Look into bleeding procedures, bent pedals, etc.
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Originally posted by M.aaron80:
I did not have the rod that came with the with the 5spd slave cylinder so I used the rod from the 4spd slave. Any difference?
If the 4spd slave rod is shorter (and I don't know that it is), it's possible your slave is reaching the end of its outward travel before the clutch is being disengaged.
[This message has been edited by Patrick (edited 03-18-2020).]
I ended up with something like 3/4" of travel on my Muncie's slave. The clutch works great on my car (for now).
"something like"? I know you've got enough skillz to get a more exact measurement than that.
My experience is that an Isuzu absolutely requires over an inch of slave travel, whereas a 5-spd Getrag requires less. I have no direct experience with a Muncie 4-spd, but I'd wager a lot of money that a half inch of slave travel would not be enough to properly disengage the clutch.
quote
Originally posted by M.aaron80:
I did buy the slave from Facebook market. The rod inside of it is only moving half inch.
My previous Fiero had the Isuzu, and I think your 1" figure makes sense for that.
On my Muncie, I was measuring the slave travel during the bleeding process, and the clutch didn't work right when there was only 1/2" of travel. I'm sure I had a more exact figure when I was doing the bleeding job, but that was a few months ago, so I forgot the details! I figured I'd post my approximate travel (for the Archives, and future responses to people seeking help) here before completely forgetting everything.
