Intermittent Grind in 3rd/4th w/Rebuilt Transmission

bastarddsm · Mar 24, 2015

You completely miss understood the point of my post, even if the car rolls the clutch can still be dragging.

kchaazz · Mar 25, 2015

During the test the car should not roll though, thats what im trying to say. If it doesnt roll, the clutch isnt dragging at all, or at least not enough to hurt the synchros. Dsms are known to be extremely finicky about clutch disengagement. Everything has to be perfect on these cars, especially the 1g with the crappy clutch pedal linkage design for the clutch to work properly. I was only pointing to clutch drag as a possible cause for the op's premature trans failure is all, and while the drag test is a somewhat moot point at this juncture, if drag is present it can certainly be considered as the possible root cause for the failure in my opinion.

EclipseOwner95 · Mar 25, 2015

bastarddsm said:
Synchro, springs, or keys are junk or clutch is dragging. Cable adjustment and stuff won't affect it.

In my car I run the older fiber synchro's. I'm poor so they are used ones too. I cut a diagonal slash through the friction material so that it sheds oil and lets it work better. I also use a 1/2 spring and cut it down so that it fits. Based on the life I have gotten, I'd get about 3 years of hard driving out of them. I shift at 9500 with a heavy 6 puck disc and a not the greatest releasing act2600/2900.

I'm not sure how the brass/bronze ones are an upgrade.

I also run GL5 fluid.

I never did get the all brass rings to work right, but I abandoned them before I realized it doesn't take much clutch drag to make a synchro grind.

Anyway if you do what I said above, it will not grind, you'll break shifter parts trying to shift before it grinds if the clutch is dragging.

Anyway I can fix your trans for you now that it's junk.

Haha, man, where were you at when I made this post 3 years ago. You seem to have a good understanding of how to address what's going on, maybe you can solve these guys issues before they get frustrated and part out the trans/clutch/flywheel and go auto like I did LOL

.

bling5tatus · Mar 25, 2015

Bastard definitely knows his stuff.

The deal with the mismatched cables/brackets is that the shift geometry is off and it will cause problems like trying to go into third but the cables only push it just barely far enough to get into third rather than the proper cables getting the full movement into third. That half ass barely making it shift will definitely wear things out pretty quick if you're not privy to the problem.

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Intermittent Grind in 3rd/4th w/Rebuilt Transmission

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