DIZZY Posted September 19, 2017 Share Posted September 19, 2017 I have a 200tdi 90 that I have just finished a min restoration I have had the body off to restore the chassis and replaced a few parts on the way I'm getting a horrible vibration on acceleration from about 20mph upwards but disappears when I back off the throttle what's been replaced so far new props new bearings new adrenalinne 4x4 castor correction arms front and rear heavy duty steering bars with all new ball joint new polybushed all round inc pan hard rod I have replaced the original front diff with a late 110 td5 one but that's been in a while I'm scratching my head now and getting frustrated any help would be much appreciated Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted September 19, 2017 Share Posted September 19, 2017 How much lift have you got? Quote Link to comment Share on other sites More sharing options...
DIZZY Posted September 19, 2017 Author Share Posted September 19, 2017 +5 shocks and 2" heavy duty terrafirma springs Quote Link to comment Share on other sites More sharing options...
Maverik Posted September 20, 2017 Share Posted September 20, 2017 what bearings have you replaced? It points to a prop shaft issue, but with the slight oddity that it goes away when you're not accelerating, brand new prop shafts? standard or wide angle? Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted September 20, 2017 Share Posted September 20, 2017 As above, sounds like prop, diff pinion bearing, or lastly transfer box output bearing. Or a dodgy, new prop. You can test this by driving with one prop removed and difflock in. As long as you're gentle, it's ok to drive it like this. Quote Link to comment Share on other sites More sharing options...
Tanuki Posted September 20, 2017 Share Posted September 20, 2017 (edited) As said, suggests a propshaft-angle/articulation issue. Put it back to the standard ride-height - and see if it still vibrates. [Why do you want a lift? IME from doing a few hundred thousand fast-road Defender miles including towing a twin-axle flatbed trailer the stock height, or perhaps an inch of **lowering** is just fine] Edited September 20, 2017 by Tanuki Quote Link to comment Share on other sites More sharing options...
DIZZY Posted September 20, 2017 Author Share Posted September 20, 2017 I had wide angle props from Bailey Morris and as I work in parts I borrowed a new set of standard to try and it's still the same. timken wheel bearings fitted maybe it's the diff I've only noticed it since fitting the second hand diff I thought it could be cv joints? Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted September 20, 2017 Share Posted September 20, 2017 Grab hold of diff and transfer box flanges and give them a good wiggle... Any movement? Quote Link to comment Share on other sites More sharing options...
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