Clive Posted September 12, 2007 Share Posted September 12, 2007 I want to lower my spitfire by "about" an inch to 7" and stick to about 440-500lb. (I currently have my canleys vitesse 440lb springs on, fitted length 8", the ones on the car were about 9" when purchased :-/ ::))So, where do I go? TT sell some 480lb jobbies, jigsaw offer a variety of springs, and a whole host offered by motorsprt retailers. But I need the id, is it 2 1/4 or 2 1/2 inches. Also if I order do I buy springs that have a free length an inch shorter than the ones I have?TIAClive Link to comment Share on other sites More sharing options...
CharlieB Posted September 12, 2007 Share Posted September 12, 2007 2 1/4" are too small but I think 2 1/2" will fit although the originals are slightly bigger. Hopefully someone else will confirm.To find how long they need to be, measure the fitted length now then press the car down to where you want it (get someone to stand on the chassis?) & measure the new length. Say the difference is 3/4" then if the new springs are the same rate they will need to be 3/4" shorter. If the new springs are a stronger rate they will need to be proportionally shorter still.A 1" shorter spring will lower the car by more than 1" due to the suspention geometry. Link to comment Share on other sites More sharing options...
Clive Posted September 12, 2007 Author Share Posted September 12, 2007 Ah, hadn't thought of the geometry thing. Thats why I like to check here for potential cockups. Link to comment Share on other sites More sharing options...
Deleted User Posted September 12, 2007 Share Posted September 12, 2007 Do you need a large weight Clive ;D Link to comment Share on other sites More sharing options...
Clive Posted September 12, 2007 Author Share Posted September 12, 2007 cheeky b****r!So you have returned safely! Well done matey, hopefully catch up soon and find out how it all went.And you don't happen to have a spare set of 5 1/2j wheels laying around do you?? Link to comment Share on other sites More sharing options...
Deleted User Posted September 12, 2007 Share Posted September 12, 2007 Might have Link to comment Share on other sites More sharing options...
Clive Posted September 12, 2007 Author Share Posted September 12, 2007 ooooh you are a tease?! Link to comment Share on other sites More sharing options...
trackerjack Posted September 12, 2007 Share Posted September 12, 2007 Spring length is very important.On my TR5 I bought some uprated springs that were supplied too long.........result was two savage spins at Goodwood the second had the car on its side up the bank.This was caused by rear going into positive camber merely when lifting off at speed resulting in instant loss of grip.I went on to win my class when I put the standard ones back in, during lunch.I then shortened the springs by cutting them and using a flame squish the ends down. Link to comment Share on other sites More sharing options...
Clive Posted September 13, 2007 Author Share Posted September 13, 2007 Exactly. I had thought of doing the same, grind a coil off with a flat and then heat and bend. But easier to get the correct ones I think. May have to be TT4407 then! Link to comment Share on other sites More sharing options...
99176 Posted September 13, 2007 Share Posted September 13, 2007 Cutting and heating probably not a good idea ??I did it once in the sixties and the spring broke during an event.I think they lose temper, but I've not done it since. Link to comment Share on other sites More sharing options...
trackerjack Posted September 13, 2007 Share Posted September 13, 2007 Oer 9917 my Sprint has been running on cut down springs for about eight years :BIn my defence I only heat the very last bit. Link to comment Share on other sites More sharing options...
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