HOW TO: Fit poly bushes

The first step to bet­ter han­dling is to re­place worn rub­ber bushes with polyurethane ones. We fol­low Pow­er­flex as they fit a set to a Mk3 Es­cort.

Classic Ford - - CONTENTS -

Step-by-step guide to get­ting bushed.

Low­er­ing your car, fit­ting ex­cel­lent tyres and mak­ing it ad­justable is all a waste of time un­less your sus­pen­sion bushes are in ex­cel­lent con­di­tion. Your car’s likely to be well over 20-30 years’ old and chances are it has the orig­i­nal bushes. They sim­ply don’t last that long. If you want tight han­dling, you’d best re­place them.

Nor­mal cars use rub­ber to dampen noise and vi­bra­tion, which is a cost­ef­fec­tive ma­te­rial but it has a lim­ited life­span. Polyurethane is much bet­ter at con­trol­ling move­ment, and can be stiffer, de­pend­ing on the bushes’ in­tended ap­pli­ca­tion (for ex­am­ple, Pow­er­flex do a race-range, which are black). It’s not cost ef­fec­tive for car man­u­fac­tur­ers to use poly bushes, but if you want your car to han­dle bet­ter, then re­place the lot with polyurethane — it elim­i­nates the slop and they can last a lot longer. Gone too are the orig­i­nal parts that can cor­rode, as these are now re­placed with stain­less steel.

New poly bushes don’t have to be fit­ted all at once — you can re­place one at a time, usu­ally when you fit low­ered springs and up­rated dampers. As a Guinea Pig, we’re us­ing Neil Boath’s project Mk3 Es­cort Es­tate that’s part-way through a Zetec in­stall. He’s up­rat­ing the sus­pen­sion, re­plac­ing the front end with RS1600i kit and ad­justable con­trol arms — hence the car cur­rently has rusty stan­dard sus­pen­sion com­ing off and nice new and re­fur­bished units go­ing back on. Nat­u­rally, that’s com­plete with an ex­cel­lent set of Pow­er­flex bushes.

There are sev­eral stages in the con­ver­sion to poly bushes. First off, you’ve got to get the old sys­tem out, which can be eas­ier said than done. Gen­er­ally there are only a few types of bush, so we’ll cover fit­ting the ba­sic ones. This way, there’s no need to re­peat our­selves and show fit­ting the same ones on ev­ery com­po­nent.

First off, let’s get some bits off the car and show how to re­move the old bushes.

Newspapers in English

Newspapers from Australia

© PressReader. All rights reserved.