Z320 Posted August 1, 2020 Report Share Posted August 1, 2020 Good morning everybody, today I want to give the rear hight on my IRS axle some attention: it is too low. Years ago I fitted too thin poly insulators with the coil springs. Has someone an experience about the relation of [mm] on the isulators are [mm] on the wheel arch, please? Ciao, Marco Quote Link to post Share on other sites
Andy Moltu Posted August 1, 2020 Report Share Posted August 1, 2020 The poly insulators come in a range of thicknesses so you can gain an extra 2cm or so by fitting thicker. Quote Link to post Share on other sites
Z320 Posted August 1, 2020 Author Report Share Posted August 1, 2020 Thanks Andy, if I remember correctly I fitted the ones from the front also on the rear. To do the work not 2 or three times with different isulators some calculations would be great. I know on the front axle it is 1 mm to 2 mm. Ciao, Marco Quote Link to post Share on other sites
stuart Posted August 1, 2020 Report Share Posted August 1, 2020 These will make a lot of difference, https://www.superflex.co.uk/proddetail.php?prod=SF378-2327%2B5K Stuart. Quote Link to post Share on other sites
Z320 Posted August 1, 2020 Author Report Share Posted August 1, 2020 Hi Stuart, thank you. I modified my front spring compressor to a "rear spring remains in the trailing arm compressor", got the ration now and hope to know what to do to get to the point on the first attempt. Quote Link to post Share on other sites
Z320 Posted August 2, 2020 Author Report Share Posted August 2, 2020 Got it, made 2 rubber shims for the right side AND more solid insulators, both side now have same hight, but both side about 5 mm too high now due to the limited collection of insulators I have. I'm on a good way... Quote Link to post Share on other sites
Rogcastle Posted August 3, 2020 Report Share Posted August 3, 2020 Hi Marco This link might help. It's at almost at the end of the article. https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwjL5ObEvf3qAhWMN8AKHRd3A3cQFjALegQIAxAB&url=https%3A%2F%2Fstatic1.squarespace.com%2Fstatic%2F5c6dec53b10f25d4edf0b3f7%2Ft%2F5c6efe8cfa0d6054b95e50e3%2F1550777997286%2FAdjusting%2BRear%2BSuspension.pdf&usg=AOvVaw1LmsIkJtM9QT1uRH0FA2IS Ride Height Change (Spacer) = (1.8) X (Spacer height) Roger Quote Link to post Share on other sites
Z320 Posted August 3, 2020 Author Report Share Posted August 3, 2020 Hi Roger, thank you very much, first I calculated x 1.6 and added 2 x 2 mm rubber shims to get to the same height. Final control was about x 1.9 mm on one side and x 2.0, I think this is about more or less the same as x 1.8. Yesterday I orderd suitable (lower) insulators to get on the corret hight Ciao, Marco. Quote Link to post Share on other sites
Rogcastle Posted August 3, 2020 Report Share Posted August 3, 2020 Let us know how you get on, if you continue reading the article it might help you adjust the Camber when the time comes. Roger Quote Link to post Share on other sites
Z320 Posted August 3, 2020 Author Report Share Posted August 3, 2020 thank you, easy job, I have adjustable brackets Quote Link to post Share on other sites
Rogcastle Posted August 3, 2020 Report Share Posted August 3, 2020 Quote Link to post Share on other sites
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