Tony Posted April 2, 2007 Report Share Posted April 2, 2007 Before any Geometry calibration is measured the car needs to be conditioned so that the chassis is in the correct position to overlap the target data (preloading). There are two main manufacturers, German and Japanese who's cars benefit by calibration regularly but they are miles apart in the conditioning requirements, these are..... Japanese For 90% of these cars all you need is the car 10% need a full fuel tank. German 10% need a full fuel tank only 90% need.... 1: 68kg on the drivers seat 2: 68kg on the passengers seat 3: 68kg in the middle of the rear seats 4: 21kg in the boot 5: oil level correct 6: coolant level correct 7: washer bottle level correct 8: transmission level correct 9: brake fluid level correct 10: all floor mats in situ 11: spare wheel and tools in situ 12: A "spreader rod" is needed to push the front wheels apart, loading the steering linkage Oh and a full fuel tank. The target calibration expects all the above conditions are observed if not then the adjusted calibration will be incorrect. Taking the fact that all Geometry positions are theoretical then the German parameters remove any real chance to analyse handling or tyre wear issues after the car is set. No wonder the average German marque dealer charges £500 for calibration! Quote Link to comment Share on other sites More sharing options...
Anees Posted September 7, 2007 Report Share Posted September 7, 2007 That is superb information Tony! Getting a geometry check very soon so will be handy to know Quote Link to comment Share on other sites More sharing options...
Tony Posted September 7, 2007 Author Report Share Posted September 7, 2007 That is superb information Tony! Getting a geometry check very soon so will be handy to know If Drury lane are calibrating the car they will know all about the pre-loading Quote Link to comment Share on other sites More sharing options...
Anees Posted September 7, 2007 Report Share Posted September 7, 2007 That is superb information Tony! Getting a geometry check very soon so will be handy to know If Drury lane are calibrating the car they will know all about the pre-loading Great I was considering trying TDI North after you mentioned that their machine doesn't need all the weight preloading, but my hols have now finished so no time to go to Warrington during the week, where as Drury Lane are close and I can leave the car with them while I walk to work so I will go to them again Obviously the report will be put online for the master to give it the once over.......... Just need my new bushes to turn up now... Quote Link to comment Share on other sites More sharing options...
Tony Posted September 7, 2007 Author Report Share Posted September 7, 2007 That is superb information Tony! Getting a geometry check very soon so will be handy to know If Drury lane are calibrating the car they will know all about the pre-loading Great I was considering trying TDI North after you mentioned that their machine doesn't need all the weight preloading, but my hols have now finished so no time to go to Warrington during the week, where as Drury Lane are close and I can leave the car with them while I walk to work so I will go to them again Obviously the report will be put online for the master to give it the once over.......... Just need my new bushes to turn up now... Out of interest what year and series is your car? Quote Link to comment Share on other sites More sharing options...
Anees Posted September 7, 2007 Report Share Posted September 7, 2007 Tony, The car is an E46 BMW 330D Sport Saloon 2003 - 2005 Facelift car (Car pic in my aviator) Suspension mods are: Eibach Pro-Street Coilovers, Eibach AntiRoll bars and (when they get here!) Powerflex Rear Trailing arm bushes and front wishbone bushes. I also have uprated top mounts which apparently are a weak point on the e46. Rims/Tyres: 18" with 8.5J et40 at the front and 9.5J et45 at the back. Although the car is on coilovers the car has not been dropped that much over standard. A Sport BMW is 15mm lower then standard anyway, so its probably about 15mm lower at the front and 10mm lower at the back then a standard sport. When I got the coilovers I was advised to go for adjustable camber plates for the front of the car, but at £255 I thought they were too expensive considering the moderate drop I have gone for! Quote Link to comment Share on other sites More sharing options...
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