Transmission Synchro Grind

[hubba bubba]

My '92 Talon is only a year old for me and had a random second gear upshift grind to start with. After double clutching for a another year and fearing a timing belt failure I got a new "clutch and timing belt kit" with everything in between. Now with a much more active clutch, first gear will grind as well as second acting pretty much the same. A cold start is worse and stop and go city shifting is tough. Easing the shifter through the gate makes it work but 0 to 60 times are not pretty. The car runs fast through the rest of the gears and is more powerful since the new clutch, etc. Once the tranny is warm it seems to shift better but the upshift to second and the downshift to first is random. Are my synchros shot? Is my tranny shot? Is the new clutch installed correctly? I am a mechanic from multiple trades and am rebuilding this car myself with no time frame. Thanks for any suggestions, HB

 

[Fast-Orange]

did you have any of the hydraulic lines opened, maybe there is still air stuck inside, get someone to push the cutch pedal and watch the master/slave cylinder to see if it looks like its moving the clutch fork all the way. also the master and slaves and bad for leaking on these cars did you replace them when you did the clutch

 

[EagleTalon1993]

In most service manuals there will be a section showing synchro adjustment thats what it sounds like. I would also make sure the transaxle is full of oil and the master cylinder for the clutch is full also.

 

[hubba bubba]

I will have to check my hand written oil smudged bill from my ex-mechanic to see about the clutch parts. Thanks for the help, I think I am going to like being a member. I have lots of other questions. What seat belts are good replacements for the stupid malfunctioning auto belts? Thanks again, HB

 

[DSM1G90]

1/2 syncros are basically shot. Have you tried to shove in some synthetic tranny fluid for the time being? I had a 5sp Eclipse with the same problem.

Do this trick to test: with the motor idling, lightly shove the shifter though the gear position (forget about reverse since there are no syncros to this gear) without dumping the clutch. If the motor begins to slow down when pushing the shifter in that one gear position, the syncro cone are doing their job in slowing down the input shaft.

But, if you grind when you go to one gear, that syncro is definitely shot - tranny rebuild is the answer.

Good luck-DSM

 

[hubba bubba]

I will do that test but I guess the tranny rebuild is what I feared. Any upgrades I should think about at the same time? Thanks again. HB

 

[mitsu29]

If you have a shot tranny, and are thinking about getting a tranny rebuild, i would suggest the following upgrades, while the tranny is out:

Clutch
Flywheel
Polyurethane Motor Mounts

Those off the top of my head.

 

[dtp1985]

ok heres my problem, i have 92 tsi awd synchros in 2nd are bad but hereit is, when you are at a dead stop and you shift into 1st gear it go in fine but when you let off the clutch it kicks it out and grinds, it will keep doing this no matter how many times you try. if you start in 2nd gear and get the car rolling just a little and then put it in 1st its fine, no grinding or nothing, and as long as you down shift to 1st while the car is still rolling and come to a complete stop it takes off just fine in 1st but will not work if you come to a complete stop and then shift, ive changed clutch assembly and fly wheel, new shifter cables and had them adjusted, master cylinder and slave cylinder are good, its worse since i changed the clutch and flywheel, can anyone please help

 

[Insane Performa]

Sounds like your syncros are shot, I drained my fluid and added lucas when I had the problem where my trans wouldnt go into 2nd under high rpm, it would just grind. As far as it not staying in 1st maybe the fork is worn or the shaft bearings. I would try draining the fluid, try some lucas or syncro shift or maybe GM synchromesh (heard that was good for dsm trans that have the problem with syncros). As far as racing on that trans you can try this, When you line up or at a stop, push in the clutch and put it in 1st then 2nd 3rd then 4th then all the way back to 1st to get the synros lined up. Hope this helps.

 

[dtp1985]

i will definately give that a try thanks for your input