E30 Zone

ih chaps i have a bad vibration at 50, i have balanced front wheels to a fine balance, checked ball jionts,track rod ends, mounting bushes on wishbones,checked run out on front disc ,tyres are new, pressures are spot on, any ideas or other points i might have missed

Can't imagine you've missed it, but I assume you've had your tracking set?

yer, tracking spot on, i have got 17" alpina rims on,but dont think they would be making the steering more sensitive?

have you got or do you need spiggot rings on the alloys??

also have the rears been balanced??
have heard they can cause shake

Are they Alipna reps? they could be bent

spiggot rings are on and they are reps but i've checked rims and they are spot on, but will change front's to rear see if that makes a difference

Checked your control arm bushes or changed them? I've known vibrations to be caused by ones that looked perfectly serviceable.

does anybody do an upgrade bush set,somthing like power flex for the control arm bushes

Be carefull the wheels havn't got any welds hidden in them - this is quite common in Alpina reps and can cause all sorts of problems with balancing and vibration.

Sorry, carn't really be of much more use to you as every thing has been covered.

Neil.

cheers neil when i get in to work tomorrow i will check that out, if there are welds on them whats the best think to do with the rims.

what offset are the wheels?

all the vibration problems i have ever had, an tehre have been many off them, have been due to the wheel having an incorrect offset. Even when i had wheels with et 30 on my bmw they wobbled at 80

et25 an its job done

Also check the steering UJ bush.

TINSNIPS wrote:does anybody do an upgrade bush set,somthing like power flex for the control arm bushes

M3 control arm bush.

whats the diffrence between std and m3 complanice bushes

What sort of spigot rings have you got? If they're the plastic ones, they can deform when you put the wheel on. You can get metal replacements for notalot...

TINSNIPS wrote:whats the diffrence between std and m3 complanice bushes

M3 ones are solid rubber, without the cut outs. Available with the hole for the control arm in the middle or with it offset towards the edge for increased castor.

Do the alternatives increase the self straightening effect or decrease it compared to standard e30 bushes?

i have metal rings on but we did notice some corrission build up between wheels and disc. have not had time to road test yet, due to fact i took the bosses mr2 turbo home tonight to test out the nos system, had to change under pants ,bit dangerous for road use,to many idiots on road plus car to quick without nos running.

haha ive got a mate whos just put a Celica GT4 turbo engine in a mk1 MR2 with NOS, thats scary too!!

Brianmoooore wrote:

TINSNIPS wrote:does anybody do an upgrade bush set,somthing like power flex for the control arm bushes

M3 control arm bush.

Put the M3 control arm bush in

Problem sorted