Gadgetman Posted September 11, 2015 Report Share Posted September 11, 2015 I am looking into a whining / grinding noise under load on my 1966 Vitesse 6. I have looked at the diff drive shaft uj's and replaced them but the noise remains & I fear it is the diff itself. Looking at the diff output shaft flanges they have 5/16" bolts but looking at the Vitesse 1600 parts illustrations on Rimmers it shows 3/8 diameter bolts, have I got a 13/60 diff and drive shafts or did triumph put 5/16" bolts on the 1600 Vitesse and the parts list is wrong? What is the diff serial number prefix for a Vitesse and herald diff??? Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 11, 2015 Report Share Posted September 11, 2015 as far as i know all 6 cly have the 3/8" bolts in the drive line , vit6 diff would have a HB prefix herald will have G have a look at canley classsic archive does a good clue about diffs and flanges http://www.canleyclassics.com/technical-archive/different-differentials Pete Link to comment Share on other sites More sharing options...
Gadgetman Posted September 11, 2015 Author Report Share Posted September 11, 2015 Thanks Pete, looks like it has had a rear axle and drive shaft swap! Any thoughts on the rear end noise, it is a grinding noise only under load uphill and disappears if I take my foot off the throttle or dip the cluch, it sounds like its in the centre of the car around the handbrake or rear of it??? Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 12, 2015 Report Share Posted September 12, 2015 I would have a look at the handbrake run the compensator lever is near the prop also check the exhaust route , these can all make contact with torque changes from the engine , always the cheap and easy options first , doesnt sound like diff if you are worried about the 5/16 you can drill them out and fit 3/8 bolts there are other small changes inside and on some of the output stubs but if its lasted so far , dont get too carried away early HB diffs had a small dia output shaft that could shear, later were all bigger diameter, what prefix is on the diff ?? Pete Link to comment Share on other sites More sharing options...
Gadgetman Posted September 12, 2015 Author Report Share Posted September 12, 2015 Thanks Pete. If I can find the source and fix it I will drive up to Duxford tomorrow. I will let you know the diff prefix later on. Ref. Duxford have a good day anyway, hope I can make it. Link to comment Share on other sites More sharing options...
Gadgetman Posted September 12, 2015 Author Report Share Posted September 12, 2015 Pete, it looks like I have found the culprit.... The propshaft has a contact mark running around it and after pulling it out it has been hitting the underside of the handbrake reinforcement panel in the tunnel. It looks like the cause is shot forward differential rubber mounts, with the car on axle stands the rubber mounts are free to spin and have a gap above them of about 50 thou. I will change the mounts for poly ones and replace a notchy prop shaft UJ then see how I get on but with a lack of parts, tomorrows trip to Duxford will not happen Oh the diff is a GE so as I read it it is a 13/60 dif (GE93007) Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 12, 2015 Report Share Posted September 12, 2015 Should have said earlier got spares in the cupboard polybushed diff mounts are a bit extreme theres not much wrong with the std cheapo versions come to duxford in the modern, we let them in you know, bring advert from courier or club membeship card to get in easy pete Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now