Polybushes for front control arms

M

modelT

Junior Member
Messages
63
Hi all,

well the clunking of the front upper control arms is now annoying me and I must get tracking done soon anyway. So I look to parts prices and standard aftermarket bushes are £320 plus VAT and shipping, so about £386. I then found these:

www.tooleauto.com

Front Control Arms Poly Bushes Bushings for Maserati Granturismo Grancabrio (M145)

A full set of 8 complete poly bushes/bushings for the front upper and lower control arms for the Maserati GranTurismo and GranCabrio. The full kit includes all the poly bushes you need to do all 4 upper and lower, left and right control arms. This 8 complete poly bush set replaces OEM part...
www.tooleauto.com www.tooleauto.com

These are £320 including vat and shipping and look easier to fit. Anyone tried them?
 
Zep

Zep

Moderator
Messages
9,330
There has been a lot of discussion around these, if you search you'll find them.

If you examine a standard bush the central boss has an ear which is clocked in the arm to resist deformation on steering input. A poly bush does not have this feature and so is more than likely a downgrade. You'll aftermarket rubber bushes for the price you have quoted above.
 
happydaze

happydaze

Member
Messages
586
I've found 'poly' bushes don't have the same characteristics as rubber. They are 'harsher', and tend to deteriorate rather quickly too.

OK for race cars, etc, if they are replaced regularly...
 
zagatoes30

zagatoes30

Member
Messages
21,043
I think it depends on the car, from my experience road cars are better with rubber bushes, they were designed to some deformation under load. Poly bushes are generally firmer and less compliant which is good if you want rigid consistent response i.e. race or tracks cars.

There is a thread on here somewhere about the type of force shear, tension etc. which explained in what circumstances poly bushes work and where they don't.
 
C

cheburator

Member
Messages
147
No self respecting race car will have polybushes... They are a cheap replacement for the real thing that is uniballs (spherical bearings). Although it's tempting to fit the polybushes, if I were in your shoes I would get in touch with VPS in Slovenia and order their bush kit and have it done here in the UK. It's not rocket science and you know you will be getting OEM+ quality.
 
E

Ebenezer

Member
Messages
4,551
Not sure if it's the same bushes but one of the front bushes is made of cheese and can be replaced by one that apparently is more resilient.
Eb
 
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