Weird irritating noise Help!!!!

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GsrGod

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Guys on my ccGsr i recently did a E3 conversion ( 4g63t engine and lsd RS box with matching lsd rear diff).

So my issue is this , when im driving fast or slow doesnt matter and i go off throttle i hear this wining sound coming from the front maybe under the car , i cant pin point it as yet, when i go back on gas it dissappears. Is this gearbox chatter, driive shaft bearing ? if so how do i get rid of it.

Also if its the centre bearing what would be the symptoms...

thanks alot
 
Did u use same gearbox?

I've had that on my old box. And I'm fairly sure it was the input shaft bearing. Was thinking drive shaft but it disapeared when I changed box and used same shaft.

One good sign to tell if it's input shaft, whilst standing still push the clutch in and out and see if you hear any noises :)
 
well the engine came with the box already attached so i just installed together, to answer your question when i press the clutch i dont hear anything except a few squeaks but thats normal i guess nothing out of the ordinary.... also when i hit 5th gear im hearing a sort of clanking noise in the rear im wondering if it could my diff .... "sighs"....


can i use my GSr transfer and gsr diff back on this E3 gearbox????
 
N u can't mix GSR and Evo box/diff ect. I'd swap back to the GSR stuff. But that's up to you. Did you inspect the clutch and everything before you put it in. It does sound like the gearbox inputshaft from what you describe, other opinions would be good too.

It sounds like the bearing in the inputshaft, it's no longer spinning smoothly putting a lot more pressure, meaning as u release the throttle it's harder for the engine to spin the flywheel/clutch/input shaft. So instead of slowing down at a normal steady smooth rate, it is more sudden and jolty, kinda like applying the brake untill it gets to its comfortable idle point.
 
Actually the car doesnt slow down that fast it cruises to stop normally . its hard to say that the engine is forcefully being used to turn the flywheel as this happens from a moderate to high speed and with the slightest touch of the pedal (gas) the noise goes away .... i welcome all thoughts and suggestions ...
 
GsrGod said:
Guys on my ccGsr i recently did a E3 conversion ( 4g63t engine and lsd RS box with matching lsd rear diff).

So my issue is this , when im driving fast or slow doesnt matter and i go off throttle i hear this wining sound coming from the front maybe under the car , i cant pin point it as yet, when i go back on gas it dissappears. Is this gearbox chatter, driive shaft bearing ? if so how do i get rid of it.

Also if its the centre bearing what would be the symptoms...

thanks alot
Click to expand...

suggest you check under car and remove pedestrian you hit.....he will stop whining when you get the cat off him.!!

do not use the evo 3 gear box with a GST transfer case....similarly do not use the evo 3 box with a gsr rear diff......if you have done either correct immediately or expect centre diff failure very soon

possible cause of rattle is worn or damage clutch hub ....springs loose in hub
 
I once had a wierd irritating and whining sound coming from my car too... then I told the bitch to get out! :lol:
Whats the gearbox code on the transmission? Have a look at the top of the bellhousing.
 
Jack it up on chassis stands or put in on a 2 post hoist and run it up.
You can't guess what a noise is, you need to replicate and isolate it, otherwise you just swapping parts for nothing. It could be any bearing in the driveline, does it change according to speed or gear or revs.
So far it's a no load noise, still could be any bearing between gearbox Input to wheel bearing, or a diff gear or transfer case gear or anything
 
Is it a definite whine or does it sound like the box is getting ready to fall out?
What clutch is in it?
You can use an e3 box witha gsr rear but you need to pull it apart and change the crown and pinion gear out.
 
Guys the gearbox is coupled on to a matching evo 3 lsd diff, there is no GSR components on the drive train except the prop shaft.... any way the noise isnt that loud ...but its present when you drive. i have no problems in shifting or gearing down when i have too, no crunches as well... i will post the gearbox code when i get a chance.. but when i checked it was a RSLSD E3 box

when powering up there is no noise , only when i go off throttle its audible ... i have driven the car all the way up to 180km/h and nothing happened ....

on another note what will cause the car to pull to the left when powering up while driving ? i have rechecked alignment twice this week and also camber is perfect.. sugestions?
 
Sounds more and more like the 'jsh-jsh-jsh-jsh-jsh-jsh' noise from when you use a heavy duty clutch. Its normal. The noise travels through the clutch and is quite audible through the gearbox.
You would hear it mainly when you're off throttle and decellerating from the lower gears. Mine does it too and its because of the clutch/flywheel combo it sometimes sounds like a dogbox decellerating.
Best to get a video recording of it and post it up for us to hear :lol: Oh, have you checked your gearbox fluid level?

Hmmm.. moving to the left on hard acceleration sounds like your front LSD isnt kicking in properly, or one of your front lower control arm bushes has a bit of play in it?
 
Guys i jacked the car up today and thank god there was no pedestrian there.. hahah... any way.. i have changed the oil in the transfer and rear diff ... since i filled the gox the last time personally i didnt check hummmm i will do so tomorrow..... so just to get some ideas i didnt find any loose debris when i pulled the plugs off the transfer nor the diff (very slight). there is no abnormal noise if i rotate the wheels manually by hand. i noticed the engine is rocking back and forth ,

i have a doubt and i would like some conrete answers im using presently on my car the following oils and its app.


Redline MT90 - Gearbox- GL4
Redline MT90 - transfer box GL4
Redline 75w90- Rear Diff GL5.

is this correct???



i have driven the car on the spot since i jacked all 4 wheels and im only getting this wining sound when i enter 5 th gear when i go off throttle also i see my shifter(new bushings installed last yr ) move back and forth each time im on 5th gear (only) when i power up "sighs".... it also sounds as if i have too much play on my prop shaft when i go back on throttle i hear a "clank" noise perhaps it could be because there is no resistance on the tyres??

well guys please share your ideas and input

thanks alot m8's
 
Get under car with it in neutral and handbrake on and go through each joint on tailshaft checking for freeplay. There should be no freeplay in any of the joints. Also check that there is no play in centre bearing
 
Shifter movement in 5th gear is usually caused by a loose nut on the end of either the intermediate shaft or input shaft in the box. Pull the end cover off and check them, if loose tighten and stake them properly and it won't happen again.
 
Well with respect to the 5th gear its on the road as well, what i dont understand is why only this gear when i go off throttle i hear this sort of rattling , grinding sound coming from either the transfer case or the gbox ... im pretty sure the rear is steady as i have on poly bushings since i bought the car (3yrs)...

can someone post a pic here under thier car like the prop shaft and the cross member ??? i wanna verify the angles and if the cross member went up correctly ..im not sure if my mechanic did the right thing...."sighs"
 
If its 5th gear related then Tim has provided some good advice by checking the end nuts on the input and intermediate shafts in the back of the gearbox.
Also, when selected into 5th, the hub drops down onto 5th gear and engages 5th gear sub gear on the rear end of the intermediate shaft. When the bearings on the intermediate shaft are quite worn, the 5th gear subgear will have a bit of play in it and it can actually start to grind on the alloy sandwich plate casting under it.
Check the gearbox oil for evidence of aluminium shavings as well.
What's it like shifting into reverse? as the Reverse synchro sits loosely on top of the 5th gear hub and the only thing holding it down is the wave spring on the back of the end cover of the gearbox. I wonder if your Reverse synchro is very worn on the flat surface and has a bit of play in it, or whether the wave spring isnt pushing down on it hard enough and its jumping around?

Here's a pic for you :)
PS: Like the letters stamped in my Viscous Coupling? = "GO" :lol:
 

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  • W5M33 End Case.jpg
    W5M33 End Case.jpg
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^^ thanks bro .. i have found so far a busted CV boot , a damaged lower Ball joint ...already bought new just to change them out.... i question do i have to drop the gearbox to pull the back plate off the GBox or i can do it just there with the box on the car???.


Another question pertaining to the cross member mounts for the engine, are the mounts for the 4g93T and the 4g63T front and rear the same ??
 
Thanks dude.. ^^^ i will work on this tomorrow i have this weird feeling my engine is moving too much when im powering up... i wanna solve that while im under the car too
 

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