Corner weights of JSPEC TT

[kjgreen3]

Hi,

 

Does anyone have the corner weights (LF, LR, RF & RR) for the jspec TT, with or without driver added.

 

Just so I can level up my car with the BC racing suspension I fitted a while back. I will be doing a full geo and corner weight adjust at some point but I need to change the rear camber arms as a couple are seized first.

 

But with the above info I can at least make the car handle better in the mean time by adjusting spring rates.

 

Thanks in advance.

[dude]

Hi,

 

Does anyone have the corner weights (LF, LR, RF & RR) for the jspec TT, with or without driver added.

 

Just so I can level up my car with the BC racing suspension I fitted a while back. I will be doing a full geo and corner weight adjust at some point but I need to change the rear camber arms as a couple are seized first.

 

But with the above info I can at least make the car handle better in the mean time by adjusting spring rates.

 

Thanks in advance.

 

You need to take driver weight fuel etc or you are wasting your time.

[kjgreen3]

You need to take driver weight fuel etc or you are wasting your time.

 

Oh I no it won't be perfect until I do it professionally along with the full geo setup. Its just after getting the ride heights sorted and levelled I jacked the rear up via the diff and the off side rear wheel came off the ground by about 2 inches before the near side rear wheel came up.

 

In my mind the near side front isn't balanced with the off side front so I thought instead of spending a day or so playing with spring preload and ride height I would see if I could balance the car using the corner weights as I bet the RF corner weight is at least 100kg more than the LF weight. I know the spring rates so I can calculate from the corner weights roughly what preload per corner then I can adjust ride height accordingly.

 

I do not intend to track the car or do any fast street racing so this is just a temporary measure to improve ride and handling characteristics. In a month or two when I can afford it I will let the professionals sort it out properly.

 

Just thought if anybody has had it done already to the jspec TT they might be willing to share.

 

Thanks for your input anyway dude.

[kjgreen3]

Anyone?

[pedrosixfour]

Would the easiest way not be to set the ride height exactly the same on the coilover body the same, left front same as right front, and the same for the rear pair and then put the weight of the car on them?

 

Then whichever side is sitting lower increase the spring load to compensate for the extra weight. Unless I'm mistaken that should level out the suspension? Plus you can allow for the extra weight of the driver.

 

Its not an ideal way and some readjustment maybe needed after some time driving but any other way except proper corner weighting is equally as sketchy.

[kjgreen3]

Thanks for your reply pedrosixfour. I think I may put that to the test. Its just a shame there was no comprehensive instructions that came with my bc racing kit. I know its an easy install but to get it to perform better than stock suspension is tricky when setting it up. I have probably spent nearly 12 hours so far faffing with adjustments over 2weekends.

 

I just want it working as best as it can before (im saving up!!) going for a full geo. My next step was to buy 3 or 4 scales and perform a 'basic' corner weight and unsprung weight measurement by placing a large timber across the scales and measuring the corner weights individually whilst maintaing the car in a level plain. I know corner weighting can be carried out by most specialist garages but its ~150 quid and I can get that done when im doing the geo if I feel like it.