hey guys, reeding a little help with an issue im having with my r34 gtr.
recently replaced the hks coilovers in my gtr due to both rears leaking and one was knocking like crazy.
so i picked up a set of TODA "fightex" coilovers from a local importer. were told they were low km and they sure looked like it.
These coilovers were obviously track orientated with both front and rear having upper bearing plates/top-hats instead of rubber bushes, nor did they have any rubber insulation between the springs and the top hats... All metal on metal so to speak
Both the front and rear upper top-hat bearings felt extreamly tight with zero movement, i removed all 4 spings and checked that the shocks were operating normally without the springs assintance.. everything looked ok. only thing i noted is when i had the coilover (rear) clamped in my bench vice by the bottom mount i could get around 1mm of movement in the shaft by pulling it backward and forward.
Seemed ok as the shock was at full extension and was a bit of leverage working against it.. maybe a little wear in the internal DU bush?
So after giving everything a good once over after reassembling i proceeded to fit them to the car.. all went swimmingly untill i test drove the car!
The rears were rattling sooo badly i swore i had forgotten to tighten the two 12mm nuts on the top hats!! almost a constant rattle whilest driving, nothing on really smooth roads but on any rough surface would result in a barrage of harsh noise!!
When going over any small potholes or bumps, the rattle would turn into a louder clunk/bang. under heavy acceleration the noise would lessen and when i was hard on the brakes and unloaded the rear coilovers the noise would drasticly increase.
i removed the rear seat and had a mate sit in the back while i drove around my estate with his hand on top of each strut, said he could feel the clunking through the coilover but it wasnt anything moving in the top area of the actuall pillow ball/top hat.
so i proceeded to remove the rear coilovers once again, inspected them from top to bottom.. nothing loose, everything done up!!!
Now through all of this i still havnt gotten a chance to fit the front units, it is still sitting on the hks's.
Now im starting to think that the rear coilovers may be ok? i have checked everything else in the car and the only thing i can find with a little wear is my rear hicas ball joints on the knuckle.
There would be maybe 1-1.5mm of movement in each rear wheel if i really wrench them from left to right while the rear of the car is on stands. the car seems to feel ok driving with no unusual movement.
i proceeded to refit my stock gtr rear struts and now there is zero noise! nothing at all, smooth once again.
what would it be? could that little bit of wear in the rear hicas really translate into so much noise with an almost solidly mounted coilover?
the hks units i removed have heaps MORE SLOP slop in the shafts and are pissing oil everywhere, but only one was rattling badly.
these also had pillow ball top-hats but there was rubber spring insluators between the spring and top hat, could this have made enough difference to hide the hicas rattle?
i have since returned the toda coilovers to the shop i bought them from for them to inspect. does anyone have any similar experience with a similar sitiation?
here is a pic of the toda coilovers i bought to show exactly what im babbling about
Any help would be greatly appreciated.
thanks, alex