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Diff temperature
richard thomas - 18/7/06 at 06:03 PM

Hi all,

Getting a noise from the rear end when above 30-40ish on a light throttle or overrun. Disappears on acceleration. Sounds like a vibration/knocking noise. Quite loud. Initial thoughts were a cv joint. Bit of play in the diff when you turn a wheel on axle stands.
Happened to touch the diff casing and it was hot!!
I know the obvious suggestion is to check the oil level and i intend to do so but does anyone have any other suggestions or had a similar problem??

Cheers, Rich.


andyharding - 18/7/06 at 07:00 PM

A lot of the engine bay hot air goes up the tunnel and heats up the diff so that's normal.

A bit of noise is also normal as it's sloid mounted.

Mine makes nasty grinding noises and whines. Too much power and too many miles. I'm going to build a new one.


richard thomas - 18/7/06 at 08:46 PM

Thanks Andy,

I must admit that the tunnel skins do get hottish but the diff felt too hot to keep my hand on it. It is solid mounted which could explain a lot but it's a bit embarrasing. When coasting to a halt as it's about to stop there is a clonk........clonk......clonk...clonk..clonk type sound. Like a ball bouncing when you drop it. Does that make sense? any ideas anyone??

Rich.


bike_power - 18/7/06 at 10:09 PM

My diff gets too hot to touch, just means you're driving it properly

The clonking could be the diff,can you feel any lumpiness when you turn a wheel ? Sometimes it can be masked by the weight of the wheel.


bimbleuk - 19/7/06 at 07:35 AM

I was out yesterday in my Striker and yep my trans tunnel walls were getting almost too hot to touch. My diff has always run quite hot. I have slackened the preload in the diff which seems to have lowered the temp but I do get the clonking when acceleration/braking at low speed. So may tighten the diff up again.


Stu16v - 19/7/06 at 09:17 PM

quote:
Originally posted by richard thomas
When coasting to a halt as it's about to stop there is a clonk........clonk......clonk...clonk..clonk type sound. Like a ball bouncing when you drop it. Does that make sense? any ideas anyone??

Rich.

That *does* sound like a dry, or possibly worn CV joint. My car went through a stage where I would get a similar noise when slowing down, or accelerating sharply form slow speeds. I regreased the joints, and cured the problem...