97SE-R C2

Well I have this bad clicking sound thatis dependant on speed. It is most noticeable at low speeds like 10mph. As I slow down it gets slow until I stop. I do notice a higher amoutn of vibration through the shifter and if I clutch in a tad while drive I can feel it through the pedal. I had the axles inspected and they are good. Also as I engage a gear it kinda feels like its rubbing (higher vibration) until it goes into gear. Its not really harder to get into gear and its not grinding. Please throw out any ideas you can think of. Oh yeah, All of this started 2 days after going to the drag strip where I had massive wheel hop on 2 runs.

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97SE-R
1/8 8.6@ 85
R.I.P. John

 

Fujimo

Sounds like you might of burned up the clutch disc... The disc has tortional springs that take the vibration and noise out of the drivetrain... When you do high rpm launches a lot of force is put on those springs and they will hit off of stop pins and sometimes will bend them.. which will result in vibration

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91 Sentra SE-R

AZ WHITE SE-R

I had a problem that sounds similar to this. It was the input shaft bearing in the tranny. Just another idea.

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In silence man can most readiy preserve his integrity
1997 200SX SE-R Turbocharged

97SE-R C2

How hard is it to change that bearingand how can I tell if its bad? All my launchs wer 1500rpms and slipping the clutch. I could never punish a newer clutch with high RPM drops Still this method netted 2.2s. Thanks guys. Keep em coming!!!

AZ WHITE SE-R

It just went bad on mine. The car was stock and never driven hard as far as high rpm launches or anything. I paid someone to do it. I believe you have to tear down some of the gears to get to it. You can use a srewdriver as a listening device to listen for sa bad bearing before you start tearing it apart. Jack up the car and get a long srewdriver. place the metal end of it around where the axels fit in and where ever there are other moving parts. you sould hear some swirling sounds, but if you hear anything that sounds like grinding or just real rough i think it would be safe to assume there is a bad bearing in there. Oh yea, put the car in first gear so that it spins the gears in the tranny.

97SE-R C2

You mean, have it on jackstands and start the car and let the wheels spin in first gear? SOrry I'm slow

AZ WHITE SE-R

Thats what I mean, I'm slow in the mornings too

97SE-R C2

I got the car on the jackstands and took a look around. When I grab either axle to spin it I get an 1/8 inch free play then the axle grabs and makes a lttle clunk and then as I keep spinning it I hear kind of a rubbing noise that is from the tranny related area..... Man I hate this crap.

AZ WHITE SE-R

That sounds normal. maybe put the car in a higher gear so that the tranny is spinning at a good rate, just be careful it doesn't fall off the stands. You're gonna hear some noise,do you have access to a friends car that you can compare noises to and see if your's sounds worse or not?

97SE-R C2

I ran it in 1st gear and the noise isn't there. I tried 2nd and it was there. Each gear I go up it gets worse. I don't know how to explain the noise. Argh!!!!! All my motor mounts seem to be in good shape (energys on front and rear) I was wary of messing around in the front of the car while it was in gear but the noise is definately in the tranny assembly. Now what to look for when I take it apart?

whitehawk

My G20 has this noise too, it sounds like a loud rapping noise. its getting worse and at an idle, you push the clutch in and it stops. That told me that it was the input shaft bearing. I wanted to change just the bearing, but I don't want to have that much downtime on the car. If I can't find a tranny soon, I will take the trans apart and do it.

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93 SE-R- Former BBDET with T28, 13.1 @ 112mph. *SOLD*

Harris

What tranny fluid are you using? Hope you're not using GL-5.

97SE-R C2

No its not GL5 but I will be switching to Redline MT90 soon. I think I'm going to start looking for a tranny too.

whitehawk

I have GL-5 in mine, while it isnt the best performing it does not cause this failure.

Harris

I was not implying failure, I meant to point towards a common problem with using GL-5 in our trannies, where the synchros wear out due to the agressive nature of that type of fluid.

AZ WHITE SE-R

There are several bearings in there on the two shafts. I do not know much about them. The gearsets are relativey complicated. I don't much about how they go togother. If a bearing binded on the shaft it would probabally be cheaper to find a new, used, tranny. New parts from nissan easily add up to a few hundred dollars plus getting someone to put it all togother if you don't know how. Before you start getting too worried I would pull the tranny and check to see that everyrhing else is in working order. a throw out bearing could be the problem too. If the thro out bearing looks real bad I would replace that and put it all back togother. I would rather do a tranny job one extra time than spend $500-$600 on a tranny I didn't need.

Good luck man,

Sean

Benito Malito

Is your tranny fluid full? May be a stupid suggestion. But you might want to check that before you go throwing down your dosch, and pulling things apart.
This is what caused my input shaft bearing to make noise a few weeks back. (On my B12) Topping the tranny off cleared it up.

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1992 SE-R 'Fasty' Mods and mods in boxes. Ready for more boost, or more vvl.

"We have always known that heedless self-interest was bad morals; we know now that it is bad economics" F.D.R. Second inaugural.

JDM_2ner

I had a mainshaft bearing failure in my '97. catastrophic results......

97SE-R C2

Throw out bearing shot? What exactly does the TO bearing do?

AZ WHITE SE-R

It applies the pressure to the pressure plate when you push down on your clutch pedal. If yuo pull the tranny off it is the bearing that is on the input shaft held on by two clips