jamie247 542 Posted May 6, 2013 OK guys I have a 6 cyl tacho for a ford xe and I want to get it recalibrated for a v8 does anyone know where to send this to get it recalibrated cheers Share this post Link to post Share on other sites
SLO247 1,713 Posted May 29, 2013 I'm interested in this too. I have a v8 one and need a 6 cylinder one. Mine may have been done though, it was in a 6 and has a sticker from adelaide speedo service or something like that. I guess I'll just try it. Any gauge place should be able to do it I reckon. Share this post Link to post Share on other sites
gerg 10,871 Posted May 29, 2013 If you pull the cluster apart, there's a trim pot on the side of the tacho which calibrates the ratio of movement. You move the trim pot with a small flat blade screwdriver. You might have to remove the speedo to get access (just a few screws). If you can get hold of an automotive multimeter that has a tacho function, you can use this to calibrate against, with engine running. I guessed mine. On a V8, one method to get you close is to set your engine idle at an indicated 1000 rpm (on a 6cyl tacho). If you note where you start then keep the engine the same, wind the trim pot back so the tacho now reads 750. If you're going the other way, just reverse the numbers. Good luck! Share this post Link to post Share on other sites
SLO247 1,713 Posted May 29, 2013 Good info, I was hoping there would be a way to cheat. I was going to fit this S Pack one to my ZK then realised I'd end up with two sets of warning lights. LTD must have had a different one again. Bugger! Share this post Link to post Share on other sites
SPArKy_Dave 8,883 Posted May 29, 2013 Good info, I was hoping there would be a way to cheat. I was going to fit this S Pack one to my ZK then realised I'd end up with two sets of warning lights. LTD must have had a different one again. Bugger! Yep, Fairlane/LTD had speedo in the center of the cluster, with temp/fuel/ either side. No tacho or vacuum gauge, or warning lights. Share this post Link to post Share on other sites
SLO247 1,713 Posted May 30, 2013 Lol. Thats the one the Fairlane had, which I knew as I have a ZK! LTD had the sports one with the warning lights blacked out. I'll just do that and I'll be sweet. Share this post Link to post Share on other sites
Boss351 4 Posted March 16, 2014 If you pull the cluster apart, there's a trim pot on the side of the tacho which calibrates the ratio of movement. You move the trim pot with a small flat blade screwdriver. You might have to remove the speedo to get access (just a few screws). If you can get hold of an automotive multimeter that has a tacho function, you can use this to calibrate against, with engine running. I guessed mine. On a V8, one method to get you close is to set your engine idle at an indicated 1000 rpm (on a 6cyl tacho). If you note where you start then keep the engine the same, wind the trim pot back so the tacho now reads 750. If you're going the other way, just reverse the numbers. Good luck! Good to know, thanks! Share this post Link to post Share on other sites
VDO 124 Posted March 20, 2014 Any instrument shop will recalibrate your tacho fairly cheaply. It's a very common job, so you can even phone them and ask the price first. At least then you'll know it's accurate. Share this post Link to post Share on other sites
VDO 124 Posted March 20, 2014 Lol. Thats the one the Fairlane had, which I knew as I have a ZK! LTD had the sports one with the warning lights blacked out. I'll just do that and I'll be sweet. An LTD cluster would have gone straight in and no warning lights. Share this post Link to post Share on other sites
