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Old 10-17-2012, 03:15 PM   #11 (permalink)
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Quote:
Originally Posted by hamsterpower View Post
Keep in mind that bad input shaft bearings and worn 1-2-3 syncros(your grinding?) are EXTREMELY common in Civics. Don't rule out a repeat problem after two transmissions. I've had 4 different transmissions in my Civic and every one has had these problems to varying degrees.
its way too loud for a drive gear. it sounds more like the flywheel teeth are rubbing on something when the sound comes. It sounds like putting a card on the frame of your bike so that it can flick through the spokes of the wheel so you can sound like a harley. Im thinking the throwout bearing is not sitting on the clutch fingers or the flywheel is rubbing on the bell house. both sound the same for the two CX/VX trannies that ive had in.

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Old 10-17-2012, 05:56 PM   #12 (permalink)
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i just replaced the trans in my moms 95 civic for the input bearing noise. it sounded terrible!! one thing i noticed when i had them next to eachother, i grabbed the old one and i could move the input shaft up and down like an eight of an inch. i tried the same thing on the junkyard trans i got and it didnt move at all. makes no noise.
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Old 10-20-2012, 09:13 AM   #13 (permalink)
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Any progress planned for the weekend? I hope so. The dremel suggestion seems like a pain but at least a solution.
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Old 10-20-2012, 09:56 AM   #14 (permalink)
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If you can drive the car.

Get it going 25 MPH, shut off the engine, in 5th gear with the clutch disengaged (pedal to the floor).

Downshift progressively to 1 st gear as you coast down from 25 MPH.

With the engine off the flywheel is stationary, the clutch disc is spinning between the flywheel and clutch pressure plate. Any flywheel problem will not exist with the flywheel stationary.

As you downshift the imput shaft bearing noise (assuming it has one) will get progressively worse.

Next put it in neutral with the engine running and put your ear on the shifter. Depress the clutch and see if the noise goes away. This is another indication of a bad imput shaft bearing. If you only hear it depressed then it is a bad throwout bearing.

While the coincidence of two different transmissions having the same problem is unusual, a typical problem like bad imput shaft bearings would definitely mean there could be two trannys with exactly the same problem.

Thats why they were removed and sold by unscrupulous people. We had an attic full of transmissions with bad imput shaft bearings we used for parts, but they were for Nissan Z cars (used to be Datsun). Typically they all neeeded that bearing by 150 k miles.

If you go into the tranny replace all of the bearings, or put wing nuts on it so you can get it out faster on the repeat R&Rs. We always had people who questioned our procedure, thinking we only needed to replace one bearing. I told them they could specify we only replace one, but they could potentially end up pulling the tranny 6 times at $150 a pop.

regards
Mech

Last edited by Old Mechanic; 10-20-2012 at 10:02 AM..
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Old 10-20-2012, 10:12 AM   #15 (permalink)
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I compared a VX, CX, and 97 CX transmissions and did not notice any differences that would hinder it from working. Can post pictures if you like.
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Old 12-02-2012, 09:14 AM   #16 (permalink)
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Any progress with this problem? It would be useful to hear the resolution, if there was one. I hope all is okay.
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Old 12-02-2012, 12:05 PM   #17 (permalink)
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Any progress with this problem? It would be useful to hear the resolution, if there was one. I hope all is okay.

+1 any update would be helpful
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Old 12-02-2012, 05:00 PM   #18 (permalink)
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Hope these help.
CX

VX

97 S40

CX left and 97 S40 right

VX left and 97 S40 right
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Old 12-02-2012, 08:14 PM   #19 (permalink)
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All the d series trans are completly interchangable. they are faulty very common or you put the clutch in wrong or got a bad kit.
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Old 12-18-2012, 10:07 PM   #20 (permalink)
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I'm hoping to do this swap in the coming weeks (hopefully before mid-January). I've got a 97 Civic DX with an EX transmission that I will be swapping with a VX transmission. I'll post back here with my results.

Thanks for all the info from the respondents!

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