anthonym Posted November 5, 2019 Share Posted November 5, 2019 How are these different, aside from being different shapes (aero/not aero etc) they all look like the same design to me:I have to choose whether to modify the middle one in a visit to Archthey are 1990 BDR (see next post #2), 1987 BDR, 2000 KR500 Link to comment Share on other sites More sharing options...
Tazio Posted November 5, 2019 Share Posted November 5, 2019 Just for completeness, mines the 1990 BDR, it's non standard, when I originally rebuilt it, it was identical as Anthonys 1987 car, but as I had an issue with the camber on one wheel, whih couldn't be adjusted out, I replaced the top wishbones and put a normal arb on too. Link to comment Share on other sites More sharing options...
anthonym Posted November 5, 2019 Author Share Posted November 5, 2019 for the record:I have elected to keep it as it is, because I never do track days etc and at the end of the day I just like it. I am going to fit the rear CC disk brakes update and keep the drums for museum use.thanks to Tazio for invaluable informative discussion :-)anthony Link to comment Share on other sites More sharing options...
7 wonders of the world Posted November 10, 2019 Share Posted November 10, 2019 Were I in your position Anthony i would do the same as Tazio and keep the original front parts in the same museum as the original rear drums. Link to comment Share on other sites More sharing options...
anthonym Posted November 10, 2019 Author Share Posted November 10, 2019 Why? I've driven her all over Europe as she is and was happy. My only reason for changing the drums to disks is ease of foreign servicing. If I want more modern I can drive my K series.Me feeling is she is of her time and that's where I want to keep her. If she was my only 7 I would have a different view.What are the technical arguments? (I am unlikely to change, but very interested ) , anthony Link to comment Share on other sites More sharing options...
7 wonders of the world Posted November 10, 2019 Share Posted November 10, 2019 main argument would be to ensure you can align all the wheels in the correct direction..........unless you've checked yours and know its spot on ?It's a little like bump steer, most seem to think there car is fine until they drive a car that's been correctedno different to your argument for the disc conversion really, not sure how much foreign servicing the rear drums on a low mileage BDR are likely to need..... Link to comment Share on other sites More sharing options...
anthonym Posted November 10, 2019 Author Share Posted November 10, 2019 I haven't driven the car since about 2004. Or 3. Far as I know the wheels were aligned ok back then. Meaning I wasn't told they weren't when it was rebuilt in 2002. Ish.She was corrected for bump steer because I complained bitterly about it. I don't recall any uneven tyre wear. drums, I just don't fancy any risk of adjustment being required or leaking slave cylinders. Based on memories of having them in the early80s or late 70s. If I were not intending to do great distances from base etc I'd not bother. Having looked at my pic of three wishbones I want to keep her distinctiveness. Drums are not so obvious and in their case it is what was the official CC upgrade of the time. I just never fitted them back then.Why is there a possibility of not being able to align the wheels?anthony Link to comment Share on other sites More sharing options...
7 wonders of the world Posted November 10, 2019 Share Posted November 10, 2019 As Tazio experienced recently there is no camber adjustment and his was a way out - negative one side and positive the other - down to the manufacturing tolerance of the OE top links..... Link to comment Share on other sites More sharing options...
anthonym Posted November 11, 2019 Author Share Posted November 11, 2019 Might top rose joints address that? Link to comment Share on other sites More sharing options...
7 wonders of the world Posted November 11, 2019 Share Posted November 11, 2019 You would need to butcher / modify the top link to fit those ........Tazio has chapter and verse on these as he has just gone through the process, his solution is the win / win safe to drive and easy to revert to OE spec. Link to comment Share on other sites More sharing options...
anthonym Posted November 11, 2019 Author Share Posted November 11, 2019 It can be reverted? What is the chassis mod? (Tazio?) Link to comment Share on other sites More sharing options...
Tazio Posted November 12, 2019 Share Posted November 12, 2019 There are no chassis mods required Anthony, I retained the additional small brackets that are bolted to the chassis that connect to the front mount of the top wishbone. So just bought two standard track wishbones and new front arb and mounts and bolted it in, all in about an hours work. I have messaged you an additional pic. Link to comment Share on other sites More sharing options...
anthonym Posted November 12, 2019 Author Share Posted November 12, 2019 Excellent, that's great news, defers any choice until after Arch has worked their magic. Link to comment Share on other sites More sharing options...
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