ZX-5 Advice and help needed please

[delorean_dude]

Hi

I have a lazer ZX-5 Sp with alot of upgrades. Brought that way. Been running great for a while now. Several things Id like to fix or clarify. Are the front or rear suspension arms the ones with 3 settings on. all the manuals show as the front but mine are the other way around. 3 spring attachment points at the rear.

The second thing... my car after running a while down the park testing setup etc started to make a grinding sound under heavy acceleration. sound like it a gear slipping or something. Its comming from the back I think so stripped it down and looked at the diff and it doesnt look like the diff gears are warped or melted (seen that before on a car i had some years ago).

Any idea what it could be.

Thanks in advance

[delorean_dude]

Ive loosened and tightened bth the rear diff and the slipper nut and it still seems to be making the same noise..

Any ideas would be greatly appreciated. I have spares. i just dont know what to do or replace.

thanks

[paulc]

Have you shimmed the diff correctly ?

[delorean_dude]

Im not sure what shimming is?

And would that be the reason considering its been working fine and just started it all of a sudden?

Thanks

[Neil Skull]

If your car is making a horrible noise it could be a few things.

If you are new to the car i suggest you do a complete rebuild follow the manual and learn how the car works.
test everything as you rebuild and replace any worn out parts and test for smooth quiet components.
normally if my car is noisy i look at the diffs are they operating smoothly or gritty? are they slipping?
is the white gearbox gears worn or need re-meshing. is the slipper slipping (too much)
the lazer is a simple car so doing a complete re-build is not that big a job.

[delorean_dude]

Ok

When I got the car i did a rebuild to a point. Didnt take the gears apart as im not sure how they work. is it likely to be the diff gears. I have spares so if it may be that ill replace them. the thing is. It has the allen bolt upgrade and im not sure where they all go so if i take it apart im worried i might not get teh bolts back in right.