Discussion
What you need varies from damper to damper, I would have thought. And the use you are making of the car.
I have had 500 lb front and 400 lb rears for track days with Gaz Gold Pros, but when I changed to Racing Reds they were better with softer springs.
Mat races with somewhere between 700 lb and 900 lb springs IIRC, but race tracks are smooth and he wants the car to corner flat.
I have had 500 lb front and 400 lb rears for track days with Gaz Gold Pros, but when I changed to Racing Reds they were better with softer springs.
Mat races with somewhere between 700 lb and 900 lb springs IIRC, but race tracks are smooth and he wants the car to corner flat.
Standard are Fr 325 and Rr 275 IIRC I got 450 Fr and 375 Rr on Gaz Monos hard but not overly but then I'm still on 16" wheels , I have recently driven a factory stock BMW Z4 M sport suspension option on run flats that was bone shakingly hard 
so I have a good compromise & compared to stock suspension night and day handling wise even compared to new old stock Billies and new springs , not referring to the later Ben Lang spec Billies however , I think a standard car is under-sprung TBH 2nd comes damping
so I have a good compromise & compared to stock suspension night and day handling wise even compared to new old stock Billies and new springs , not referring to the later Ben Lang spec Billies however , I think a standard car is under-sprung TBH 2nd comes damping Edited by Zener on Saturday 19th December 13:43
From a thread I posted in back in 2013
MisterT said:
I spoke to the man at Eibach a couple of years ago when I was trying to sort my Griff spring rates.
I quoted him my original TVR spring part numbers and this is what he came back with;
Front C0098 48.6 N/mm x 5.709 = 277.5 lbs/in
Rear D0103 38 - 60 N/mm (progressive rate spring) x 5.709 = 217 to 342.5 lbs/in
The conversion factor he told me to use was 5.709 x the rate in N/mm
I quoted him my original TVR spring part numbers and this is what he came back with;
Front C0098 48.6 N/mm x 5.709 = 277.5 lbs/in
Rear D0103 38 - 60 N/mm (progressive rate spring) x 5.709 = 217 to 342.5 lbs/in
The conversion factor he told me to use was 5.709 x the rate in N/mm
MisterT said:
From a thread I posted in back in 2013
This is very confusing /interesting considering everyone’s been going the other way for years. MisterT said:
I spoke to the man at Eibach a couple of years ago when I was trying to sort my Griff spring rates.
I quoted him my original TVR spring part numbers and this is what he came back with;
Front C0098 48.6 N/mm x 5.709 = 277.5 lbs/in
Rear D0103 38 - 60 N/mm (progressive rate spring) x 5.709 = 217 to 342.5 lbs/in
The conversion factor he told me to use was 5.709 x the rate in N/mm
I quoted him my original TVR spring part numbers and this is what he came back with;
Front C0098 48.6 N/mm x 5.709 = 277.5 lbs/in
Rear D0103 38 - 60 N/mm (progressive rate spring) x 5.709 = 217 to 342.5 lbs/in
The conversion factor he told me to use was 5.709 x the rate in N/mm
This using 15/16 wheels on old style ( harder ) tyres if these are shocks off an original factory car, that’s thrown a spanner in the works!
I think the thinking must have been mild understeer is better than wild oversteer by having the front softer as it’s easier for a none pro driver to deal with and more predicable. Passing brake tests etc etc.
Really weird as I thought it was something like 325 F and 275r as standard or even slightly harder on early Griffs .
Where are all the old factory boys when you need them : D
Classic Chim said:
Where are all the old factory boys when you need them : D
He's on e-bay blackdownauto https://www.ebay.co.uk/itm/TVR-Griffith-Chimaera-E...
glow worm said:
They are variable rate too, I never noticed that before. Billies from Ben are on my to do list
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