David Mirylees Posted April 19, 2012 Share Posted April 19, 2012 Anyone have any suggestions as to why a brand new crownwheel and pinion that was fitted 1600 miles ago to my Ford axled 7 should now be (to quote the garage) "eating itself"? I took the car to the garage that did the fitting of the CWP last week for it's MOT and mentioned that the diff was noisy, whistling from 50 mph onwards. They rotated the propshaft and found that there was way too much play and told me that it should be less than half the way that it is now. Booked the car in to have the diff checked and re-set and then received the dreaded 'eating itself' call. The teeth on the CWP appear to be sharp/rough whereas I thought that they were smooth when I received it. Anyway the parts are over a year old now so the CWP supplier doesn't want to know but I would really like to know what has occurred. Cheers. Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted April 19, 2012 Share Posted April 19, 2012 Assuming they are kosher parts, not a cheap copy part, guess it is to do with the installation of the parts ? Job for someone like Road & Race near Sevenoaks. Link to comment Share on other sites More sharing options...
James_Russell Posted April 19, 2012 Share Posted April 19, 2012 Who set it up, did it have the right oil in the right quantity, has it been used on track? I feel your pain, I tend to ruin a diff in my Ital axle car every season 😔 Link to comment Share on other sites More sharing options...
Exmog Posted April 20, 2012 Share Posted April 20, 2012 Assuming the parts are to OEM spec then the only possibility is poor setup/adjusbment. Ford 'English' axles are about as tough as they come - PROVIDED the CWP backlash has been set correctly, and you had the correct ep80 oil in the diff casing, Hope this helps Bon Link to comment Share on other sites More sharing options...
David Mirylees Posted April 20, 2012 Author Share Posted April 20, 2012 Part came from the 'people that make suits' so was expected to be of good quality. Their web pages state that their diffs are made to OEM stds. (unfortunately other already mentioned experts mentioned that these new diffs are made overseas and aren't brilliant). Diff was installed by local garage which is always looking after 'interesting' machinery, has a great reputation and hillclimbs a couple of nice toys. All the set-up was promised to be correct. Correct oil was used and was at the right level... Car only used on the road. Link to comment Share on other sites More sharing options...
Brian Soper Posted April 20, 2012 Share Posted April 20, 2012 Could be too many donuts for you or the car!!!!. Brian L7 S2 with a good old Standard axle 10 axle fitted ( with minor upgrades from scrap yard!!!!) Link to comment Share on other sites More sharing options...
David Mirylees Posted April 20, 2012 Author Share Posted April 20, 2012 Wife wont let me have too many duffnuts and it's soooo long since I REALLY played with the toy to be able to achieve a motoring example!!. Thks Brian, CU at the Combe.... Link to comment Share on other sites More sharing options...
Revin Kevin Posted April 20, 2012 Share Posted April 20, 2012 Dave, I am not being pushy, but I have a complete 3.89 english diif that I am just about to put up for sale if you are interested. cheers Chris Edited by - Revin Kevin on 20 Apr 2012 18:00:52 Link to comment Share on other sites More sharing options...
David Mirylees Posted April 20, 2012 Author Share Posted April 20, 2012 Thks 4 the offer Chris but I have ordered an English 3.54 from Road & Race to ensure that this /next time everything is OK. I got the dubious diff back earlier today and will get the CWP checked locally for hardness B4 I send it back to 'the tailors' for their comments. I checked my diff with another and found that the top edges of the teeth have burred which is giving the rough edge. The other diff had teeth that were smooth to the touch. Edited by - David Mirylees on 20 Apr 2012 18:50:34 Link to comment Share on other sites More sharing options...
johnnyseven Posted April 20, 2012 Share Posted April 20, 2012 David--what a pain--- at least the weathers pants---well thats what i keep telling myself ☹️ Link to comment Share on other sites More sharing options...
David Mirylees Posted April 20, 2012 Author Share Posted April 20, 2012 But I like driving in the rain 😬 Still, it'll have to be the Europa for the Bristol Classic Car show tomorrow... Link to comment Share on other sites More sharing options...
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