Jump to content

Suspension Rebuild with Poly Bushes etc.


68vitesse
 Share

Recommended Posts

Been thinking of rebuilding the suspension of my MK1 Vitesse during the winter with poly bushes and a named make shock absorbers, car is used for normal running about.

 

The more I read the more confusing it gets if this is worthwhile.

 

Shock absorbers it seems that the ride adjustable needs to be on minimum setting, so why bother.

 

Poly bushes you need different hardness for different applications i.e shock absorber needs harder than wishbones, advice of one supplier, do you or do you not use grease on them. Some sites suggest they creak and groan without lubrication, but lubricant plus road grit equals grinding paste as wishbone bushes, I am told, act as a bearing.

 

Where people say they are an improvement is it because they replaced worn out bushes with new whereas new standard bushes would work just as well.

 

I understand harder bushes are a benefit for track cars but for normal running about do poly bushes transmit more vibration and noise?.

 

Suppliers have an interest in you spending several hundred pounds with them so some unbiased advice would be appreciated.

 

Regards

 

Paul

 

 

Link to comment
Share on other sites

use club shop  for unbiased advice give garth a call

 

 

poly bushes dont want grease  neither do any rubbers,  but should have a powder/paste to lubricate on fitting, 

 

in general blue is for standard ride and replicates the rubber,,  the problems with many replacement rubbers are the lack of correct addatives  poor life and often made to look alike , not perform alike the OE spec  but very cheap

 

its all down to preference and what useage/mileage you do

 

there's no point in spending loads of £££s for 1,000 miles a year use 

 

you can spend loads of £££ for so called peace of mind , then never use the car   

 

its a balancing act 

 

Pete

Link to comment
Share on other sites

New bushes will cure things to a certain extent but the rubber is no longer as good as it used to be due to different allegedly-greener processes and chemicals. Certainly older worn bushes will move about more and the sharpness of new components is amazing. you’re really talking longevity; it’s not a job you want to be repeatedly doing. I fitted blue polybushes to roll bar and diff mountings as a fit and forget; red for radius arms for the stiffer grip but the wishbones etc got yellow nylon bushes, very hard nylon with no flex at all and it really transformed the GT6 handling. Ten years on they’re as good as new. 

There’s no increase in road vibration at all. 

 

 

Link to comment
Share on other sites

As Pete says if your not doing much mileage there's not a lot of point upgrading.  I was intending to continue with rubber bushes but I recently bought new Gaz fixed pan shockers from the club shop and was surprised to find the front came with rubber bushes, the rear with poly.

 

I'm happy that the club shop rubbers are good quality so I've fitted both sets of shockers and they're a great improvement, my teeth no longer rattle and I glide rather than bouncy down the road.  :lol:

 

The poly bushes did creak at first and they were a devil to fit! I had to take my vice of the bench and drag it round the back of the car to press the bushes in! The experience was  probably enough to dissuade me from a full poly upgrade!

Link to comment
Share on other sites

poly bushes dont want grease  neither do any rubbers,  but should have a powder/paste to lubricate on fitting, 

 

 

As Pete says, don't grease polybushes - of any manufacture.

 

It is however OK to "grease" them using a fully synthetic white grease if you need to.

Superlube Synthetic Grease is the one to use

http://www.ebay.co.uk/itm/like/181862009139?adgroupid=&hlpht=true&hlpv=2&rlsatarget=&adtype=pla&ff3=1&lpid=122&poi=&ul_noapp=true&limghlpsr=true&ff19=0&device=c&chn=ps&campaignid=&crdt=0&ff12=67&ff11=ICEP3.0.0-L&ff14=122&viphx=1&ops=true&ff13=80

Link to comment
Share on other sites

Paul - apologies for hijacking your thread - but I'd like to add a related query. My Vitesse  (1967 2L CV) was MOT'd last Saturday and got an advisory for movement on the bush at front o/s lower wishbone. Was wondering if it's something you replace one at a time  - or should do all one side together  - or should do all of both sides at the same time. I suspect I know the answer - just wondering (from those who've done it) how big a job it is - so how best to approach it.

 

Thanks

Link to comment
Share on other sites

I don't think there's any legal reason not to replace a single bush but I'd replace both - the hard work is getting the wishbone off, the bushes aren't that expensive, and if one's been there long-enough to start breaking down chances are the other one won't be far behind.

 

In fact unless you've done it recently I'd probably get a trunnion bush kit and replace that while you're there.

Link to comment
Share on other sites

if you are in the zone , i would undo the wishbone bracket through stud nut and withdraw the bracket and its welded stud and just check its not rusting through

 

make sure you fit the right bracket the right way up when refitting or you mess up the castor .

 

these hidden studs can be very good or very rotten 

 

Pete

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

×
×
  • Create New...