Discussion
I have been thinking about my car and how it handles. Its actually pretty good but i think it can be improved.
I have found that for me the best handling is to set the suspension to its stiffest setting (gaz gold pro) ,this is just too hard for the road though so i now have them set at about 3/4 of full stiffness which tbh most people would not like.
However what i now get is a lot of wheelspin,all of first gear and if i want most of second, after reading some other threads on here i'm led to believe that stiff is good but the dampers aren't able to work properly, so it could be an advantage for me to fit harder rear springs and then soften the rear dampers up allowing them to work better
Tyre pressures have actually dropped to 22psi. This could be due to a stiff sidewall (yoko ad08), any more makes the car feel too vague. I have 10mm rack spacers fitted which has eliminated a lot of bump steer.
What spring rates would be on ggp shocks from new? what rates should i try?
Spoke to someone the other day from a well known supplier who told me 295 would be a max- thats seems to conflict with a lot of what i read.....
I have found that for me the best handling is to set the suspension to its stiffest setting (gaz gold pro) ,this is just too hard for the road though so i now have them set at about 3/4 of full stiffness which tbh most people would not like.
However what i now get is a lot of wheelspin,all of first gear and if i want most of second, after reading some other threads on here i'm led to believe that stiff is good but the dampers aren't able to work properly, so it could be an advantage for me to fit harder rear springs and then soften the rear dampers up allowing them to work better
Tyre pressures have actually dropped to 22psi. This could be due to a stiff sidewall (yoko ad08), any more makes the car feel too vague. I have 10mm rack spacers fitted which has eliminated a lot of bump steer.
What spring rates would be on ggp shocks from new? what rates should i try?
Spoke to someone the other day from a well known supplier who told me 295 would be a max- thats seems to conflict with a lot of what i read.....
You dont say what year tuscan but the last suspension update TVR released, available as a retro fit was the Tuscan S spec, this used 35N/mm front. 50N/mm rear springs on Bilstiens. The rear is a good setting for road use depending on how flat your roads are, if they are lots of rise/dips I would think about going to Sag Rates 80N/mm front spring, 70 N/mm Rear.
IMO the stiffer springs help keep the car off the bumstops so maintain a more comfortable /controlled ride compared to stock original TVR rates which apart from the Sagaris /Tuscan S always seemed a little soft on the rear so led to either riding on the bumpstops or crashing into them early in the suspension stroke. Ps I have no idead what rates GAZ fitted to its shocks as std, but I think Nitrons seem to fit ones similar/same as Sagaris rates for all its T-Car chassis road shocks as default..
IMO the stiffer springs help keep the car off the bumstops so maintain a more comfortable /controlled ride compared to stock original TVR rates which apart from the Sagaris /Tuscan S always seemed a little soft on the rear so led to either riding on the bumpstops or crashing into them early in the suspension stroke. Ps I have no idead what rates GAZ fitted to its shocks as std, but I think Nitrons seem to fit ones similar/same as Sagaris rates for all its T-Car chassis road shocks as default..
Edited by fredd1e on Sunday 19th February 16:06
http://www.thetvrshop.com/TVR/Parts_details/TVR%20... these are 27.5N/mm so very soft and a fair bit less than the stock front spring @35N/mm part no D0117.
Fred- the car is a 2001.
I spoke to gaz today and he actually said go for something like 500 rear and 600 front !
Sounds extreme to me, he also said that the dampers would be ok with those rates.
I may go for 450 rear and 500 front i think. He said the supplied springs would be around 350lbs but couldn't confirm it.
I like it stiff(?) but want it to actually work properly.
I spoke to gaz today and he actually said go for something like 500 rear and 600 front !
Sounds extreme to me, he also said that the dampers would be ok with those rates.
I may go for 450 rear and 500 front i think. He said the supplied springs would be around 350lbs but couldn't confirm it.
I like it stiff(?) but want it to actually work properly.
The 450 /500 combo is just slightly stiffer than the Sag stock rates so a maybe a nice uplift from the possible 350lb/in rates (~60N/mm) you may have fitted now. Some Sag owners have reported bottoming still with the stock rate but I think this is a "feature" of the T Car suspension wishbones where the effective spring rate reduces as the suspension compresses. You either fit rising/ mixed rate springs to counteract or go to stiffer static rates so that the reduced rate is where you want it to be on bump.
In a T350 I've tried with 80N/mm front and 50N/mm rear felt to soft at the rear (great ride comfort) and nice at the front but could have stood being a tad stiffer in roll. Personally for road use I think the Sag rates or thereabouts are a good starting point.
In a T350 I've tried with 80N/mm front and 50N/mm rear felt to soft at the rear (great ride comfort) and nice at the front but could have stood being a tad stiffer in roll. Personally for road use I think the Sag rates or thereabouts are a good starting point.
I'm surprised the bloke at gaz recomended rates as stiff as he did, i did explain to him what i wanted the car to do and that i actually like the car to feel stiff but obviously not pinging me all over the road and also not 'too' uncomfortable.
He seemed to suggest that the dampers have enough control in them to adjust to suit. I must admit that the range of adjustment surprised me. I have had bilstein pss9 before along with tein coilovers and eibach(not adjustable) and tbh these have probably 3 times as much adjustability. The tein may as well have been un adjustable.
Maybe i should give the 550/600 combo a go. They are local to me and quite cheap so could be worth a try.
He seemed to suggest that the dampers have enough control in them to adjust to suit. I must admit that the range of adjustment surprised me. I have had bilstein pss9 before along with tein coilovers and eibach(not adjustable) and tbh these have probably 3 times as much adjustability. The tein may as well have been un adjustable.
Maybe i should give the 550/600 combo a go. They are local to me and quite cheap so could be worth a try.
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