Its been happening for a while but its getting worse. Sometimes in low gears and revs get terrible judder and vibration, sounds like from the gearbox area, and also when coming down the gears. If i blip the throttle when changing down its fine and nice and smooth. I\'ve had it on the ramp and checked the ppf which is tight, i have new diff mounts also. Checked the prop and with all 4 wheels on the floor in neutral you can turn the prop round a fair bit either way.
Anybody know whats wrong is the gearbox on its way out???
Any help would be great
Regards
Mark
just a thought do you have a lightened flywheel. Mine started juddering like that because i didnt change the counterweight:rolleyes:
I have gandy its an excedy hyper single which does have a lightened fly wheel with it. I\'ve been told it could be my gearbox on its way out something to do with the output shaft.
Regards
Mark
Mine has a lightweight flywheel and counterweight and still does it quite badly sometimes. Must be the penalty for having a lightweight flywheel.
I doubt it will be the counter weight, mainly because the aftermarket flywheel would have nothing to bolt too. :)
I would say its more likely to be your clutch or Pilot bearing if the seal wasn\'t replaced with the clutch it could have gone. if it is the Pilot bearing that will kill your Box bearings over time.
But the place i worked a while back had a Rs Turbo van (yeh i know chav\'ish) that was running 260hp and it had a Monster Clutch in it, when you pulled off in low gears it would Judder really Bad if you let the clutch out slowly.
What\'s the pilot bearing??????? Is this the clutch release bearing?
Regards
Mark
No its a bearing in the end of the Crank shaft the gearbox\'s output shaft sits in, if it fails it can cause some odd faults one of them is vibrations through the box.
Its recommended that there changed every clutch, but there a royal pain to do without the proper tools so they often get left. they are just a Needle bearing with a seal at the end, if the seal goes it will get clogged up with Clutch dust.
That may make sense. I have a huge clutch, FEED 600bhp twin plate jobber. You reckon i need to get the pilot bearing seen to?
Don\'t get me wrong it could just be a really hard biting clutch (it has been know) but it is also a sign of a Bad Pilot bearing, I have to say feed with your car just coming from Newera i would doubt it would have a fault that obvious.
True. The clutch bites like a great white so its probably that. If it goes tits the bearing will hopefully be covered under the warranty.
Quote from: markyWhat\'s the pilot bearing??????? Is this the clutch release bearing?
Regards
Mark
Can also be called "spigot shaft bearing"
The low torque characteristics of ported rotaries with lighter rotational mass contribute to this judder at part throttle and low rpm. Annoying, but normal. :Thumbs-up
Cheers,
John
What you\'ve got there sounds exactly like what I had, and mine got progressivly worse. The power plant had snapped into 3 pieces, get it looked at ASAP.
Cheers for the replies, sounds like i\'ll have to get the gearbox looked at. Is this expensive if i do have to replace the bearings? The PPF looks ok but will check it over whilst the box is out
Regards
Mark
When I come off track I usually get alot of judder if I reverse the car but not going forwards ........ odd ........... but it goes away.
J
Mine only ever happens when im going very slow or in a high gear at low revs.
Quote from: FEED RocketMine only ever happens when im going very slow or in a high gear at low revs.
mm I think you\'re describing "bucking" here.
Cheeky Chimp! Its the gearbox underneath, and it sounds like its about to fall off. It just clunks around.
Quote from: FEED RocketMine only ever happens when im going very slow or in a high gear at low revs.
I have something very similar, although mine feels like its the engine lurching back and forward. I\'ve just replaced the diff and diff mounts so everything is fine that end, PPF is also fine as I had it off changing the diff. One thing I did notice is that the gearstick seems to vibrate now when i\'m on throttle!
Juddering on part throttle or high gear at low revs is really annoying tho!
my car has been developing this for quite a while.
I am in the process of removing the engine, and I think the rear oils seal is leaking. So I think (hope) its oil on the clutch plate, or the engine mounting has failed due to being soaked in oil.
Lots of things can cause this, it depends what the judder is that your talking about.
if its when taking up drive (e.g slipping the clutch) it could be your flywheel needs a skim. I didnt bother skimming mine and this is why mine does it.
When does it happen with clutch engaged, part engaged, or open?
Mine does it when coming off the throttle (clutch not engaged), or on part throttle going slow.
I get judder in reverse but think thats the twin plate clutch when its part engaged! :)
Mine is the same as yours ourkid but not in reverse although sometimes pulling off in first there sounds like a strain on the box and makes a nasty noise. Mainly on part throttle sometimes a terrible judder sounds like the box is gonna fall out, and then when downshifting a nasty sound as if something is loose from the gearbox area?????
Regards
Mark
Ooooooooooooooh I get something similar...
When I change down the gears when slowing down it feels as if its juddering from the back. I thought it was the diff perhaps, but I\'ve fitted a diff brace and it doesn\'t seem to have made much difference.
However If I apply a bit of throttle the juddering goes a away
Just like to say that I just picked my car up from having its tracking re-done and the guy said that the tracking was way out on the rear, so the juddering problem seems to be have been alleviated a bit (not completely sure as I\'ve only driven it a few miles)
Anyway, you may want to get that checked out first before spending lots of money on all the possible things mentioned in the thread.
Quote from: markyMine is the same as yours ourkid but not in reverse although sometimes pulling off in first there sounds like a strain on the box and makes a nasty noise. Mainly on part throttle sometimes a terrible judder sounds like the box is gonna fall out, and then when downshifting a nasty sound as if something is loose from the gearbox area?????
Regards
Mark
Same here, so im guessing its a common fault, or something to do with having a twin plate clutch. Mine is going to WGT soonish so i\'ll ask pip to check it out.
Get him to check it out and let me know please, really starting to do me fruit in. Had a wheel alignment not so long back so don\'t think its that.
Regards
Mark