martinwhitcher Posted February 5, 2002 Share Posted February 5, 2002 what ride height should i expect. i've got a standard superlight riding on r500 wheels(13" 3 piece mag wheels) with Avon CR500 tyres what ground clearance should i be looking at, the manual says 75mm under sump but that is with 14" wheels?? Cheers in advance Martin Link to comment Share on other sites More sharing options...
Jason Plato Posted February 5, 2002 Share Posted February 5, 2002 Martin , 75mm under the sump is fine , it all depends if this will bottom out on your favourite bit of road . The rear could then be set 15mm higher . measured from the chassis rail just ahead of the LHS engine mount and the chassis just ahead of the LHS rear arch . Suck it and see realy ... depends on how you like your car set up , springs , arb's , weight of passengers , purpose of car ,etc etc Dave Link to comment Share on other sites More sharing options...
Peter Carmichael Posted February 5, 2002 Share Posted February 5, 2002 Superlights on ACB10s typically have ~50mm under the sump. Link to comment Share on other sites More sharing options...
martinwhitcher Posted February 5, 2002 Author Share Posted February 5, 2002 Peter, Dave the reason i'm asking is that it looks high and do you think i should lower to about 50-60mm? it also seems twitchy rear end? cheers Martin Edited by - martin whitcher on 5 Feb 2002 15:47:59 Link to comment Share on other sites More sharing options...
Jason Plato Posted February 5, 2002 Share Posted February 5, 2002 Word of warning ..... if you try and run with 50mm under the sump you will soon have 55mm - as the sump bottoms out on anything other than a race track as you are pushing on , and you grind it away big time . Been there done that - replacement dry sump pan = £££££ My rule of thumb is a low as possible without bottomimg on your favourite road . this happens to be 70mm for me . Dave Link to comment Share on other sites More sharing options...
robmar Posted February 5, 2002 Share Posted February 5, 2002 FYI I have just had my car FFloored at caterham I have 13 inch with 185 60 rubber, and clearnace under the car (dry sump) was set to 70mm. Only driven the car in a typhoon (well it felt like it) since so not sure what difference to handling yet. hope this helps Link to comment Share on other sites More sharing options...
martinwhitcher Posted February 5, 2002 Author Share Posted February 5, 2002 cheers all, just to let you know i have a wet sump 1.6Kss, if this makes any differance?? Keep um coming!! Martin Link to comment Share on other sites More sharing options...
Peter Carmichael Posted February 5, 2002 Share Posted February 5, 2002 I entirely concur that lowering to the point where the sump hits the deck frequently is pointless. There is another point to do with bumpstops. If you go lower, you might find the car riding prematurely on its bumpstops. A good rule of thumb on widetrack is 10mm of damper travel until the bumpstop comes into play. If the back end is twitchy the chances are it is too high. Try lowering it a couple of turns independent of any other changes. Link to comment Share on other sites More sharing options...
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