63 replies to this topic

[Mike (Cliffie)]

Martin S has just had a SuperPro kit fitted and his wishbones moved OK as well.

I think it's luck of the draw fella, or they get worse over time... Bargi's were stiff as hell at Le Mans when I checked for him. I'm guessing they were fine when they went in....

They were tight when they went in but they did move. I have spoken a lot to Steffan and Jez at Back on Track about this and what happens is the mounts on the chassis get crimped when the car is first built so when fitting poly bushes the mounts need to be opened up a bit before fitting the wishbones back in. Not too bad on the six that slot straight in but a bugger on the upper fronts that need castor washers fitted. Can often be so tight that it seems impossible to fit all four castor washers but they need to go in.

'opening up' chassis mounts... OMFG!

Yup, at BOT have clarified, the top shock mounts need to be "un-crushed" to get the correct number of camber washers in and prevent the shock bolt from crushing the mounts and therefore causing excess stiction on the bushes.

[BOT]

Martin S has just had a SuperPro kit fitted and his wishbones moved OK as well.

I think it's luck of the draw fella, or they get worse over time... Bargi's were stiff as hell at Le Mans when I checked for him. I'm guessing they were fine when they went in....

They were tight when they went in but they did move. I have spoken a lot to Steffan and Jez at Back on Track about this and what happens is the mounts on the chassis get crimped when the car is first built so when fitting poly bushes the mounts need to be opened up a bit before fitting the wishbones back in. Not too bad on the six that slot straight in but a bugger on the upper fronts that need castor washers fitted. Can often be so tight that it seems impossible to fit all four castor washers but they need to go in.

'opening up' chassis mounts... OMFG!

Yup, at BOT have clarified, the top shock mounts need to be "un-crushed" to get the correct number of camber washers in and prevent the shock bolt from crushing the mounts and therefore causing excess stiction on the bushes.

Only 'uncrushed' after they have been fiited incorrectly in the first place. If people really must fit poly bushes (agree with Chris's feelings on them) then make sure the castor shims/washers are put back in, they are there for a reason and not optional! Also make sure the wishbone moves freely once fitted other wise you'll end up with the situation as show in Chris's video.

[speedster norway]

Can we talk cost?

Cost to convert the wishbones (all 8) to rose joint specification plus spacers, plus rose joints... Ball Park Figure?

I have poly bushes and my wishbones are a shite site freer than a VX220 that I worked on recently that was running standard and original and very worn bushes.

JSRacing ones about £400
Nitron ones about £460

The Nitron ones are press fit into the original wishbones I know that, are the JSR ones the same?

not sure but they look very similar

http://www.ebay.co.u...t-/290452418062

How is the life time on this JSR compare to the orginal?
And if its matter the car is use as number two play/fun car and some track.
But most of the year in the carage Because of short summer and long winter!

[cnrandall]

Martin S has just had a SuperPro kit fitted and his wishbones moved OK as well.

I think it's luck of the draw fella, or they get worse over time... Bargi's were stiff as hell at Le Mans when I checked for him. I'm guessing they were fine when they went in....

They were tight when they went in but they did move. I have spoken a lot to Steffan and Jez at Back on Track about this and what happens is the mounts on the chassis get crimped when the car is first built so when fitting poly bushes the mounts need to be opened up a bit before fitting the wishbones back in. Not too bad on the six that slot straight in but a bugger on the upper fronts that need castor washers fitted. Can often be so tight that it seems impossible to fit all four castor washers but they need to go in.

'opening up' chassis mounts... OMFG!

Just to clarify this, we have had to refit the correct number of castor washers on a number of cars after they have had been incorrectly refitted with not enough! I have seen a number of upper front wishbones fitted incorrectly causing the chassis mounts to be crushed. They THEN need to be opened back up and done correctly.

That sounds more like it! Very lost in translation that one... We have seen that a few times too, even had one where there were NO caster washer fitted and the chassis needed a repair!