Originally Posted by Bass Crazy
WBT56... that sound like incorrect backlash to you??
Since this is my first diff rebuild I have being trying different things,I was trying out a gearset tonight just playing around with it to see what is going on,there is definitely a clearance problem,the tooth contact pattern I couldn't get very accurate and thought that it was close enough (really needs like shims going up in 0.05mm increments to get it spot on),my father actually convinced me it was o.k. him being a fitter with over 30 years of experience I took his word for it when the diff was grating whilst being turned over by hand in the forwards direction at the axle (was fine when tured at the pinion) (reverse is as quiet as a mouse),I wasn't happy with it but fitted it anyway to see how it will go,went o.k. in reverse and when pulling up a steep hill but coast with no load in the forwards gears is very different.
I think the pinion is either burred or the crownwheel may need a very minute amount of shimming to take away the noise,I should've gone with my own intuition and pulled the plug on it and do it right,I will fit the old diff with all of the new brake parts on it tomorrow which are on the new unit (diff has VN Commodore rear brake mechanisms on it which are different to the VL rear disc setup),then I can spend time on shimming it which is what I wished I could've done 2 months ago only that the firm who made the crownwheel spacer took nearly 3 months to make it when I thought a week as a realistic timeframe.
I was kind of in a hurry to get it in because the RB30 Nissan motor which I am putting into my VL is a twin cam high compression setup ready to put out around 190 FWKW of power and I wasn't going to fit it while I had a drum diff in my car,the LSD would've been ideal for that power output as it made the car corner like it was on rails.