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HARD down shifts "thud"

910 views 12 replies 7 participants last post by  Aquafina 
#1 ·
I have a CTR tranny in my ek coupe. I installed the tranny maybe 5000 miles ago and its been great until recently. Now when normal everyday driving (not agressive) like slowing to turn while downshifting its like i just dump the clutch no matter how easy i let out on the clutch. The only way around it is by rev matching on the downshift. Also I have a deep rattling sound at idle that will go away when I push in the clutch.... I'm assuming its the throw out bearing. Like a fool, I reused the old one. it only had ~5000 miles on it as well. Could it also be "hanging" or binding on the input shaft and causing the sudden engagement of the clutch? Or is this a sign of a deeper issue?
 
#10 ·
I filled the oem mounts with window weld when I put the ctr tranny in. I've been driving the car for a couple months now with no problems. Its just started all of the sudden. I looked at the sticky about replacing the isb..... I'm nervous lol. What else do I need to look for while this thing is apart? What would be involved if I wanted to swap in a ls 5th gear while its apart?
 
#11 ·
replace the ISB seal as well

and any other parts that show excessive wear.

its usually a good idea to disassemble the shafts and clear them out with compressed air and brake clean. or any other way you can manage to get the debris out.
 
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