Vibrating/rough pulling

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Re: Vibrating/rough pulling

Post by rich the mechanic on Fri Jun 21, 2013 10:37 pm

the axle has bump stops so when they bottom out the prop is at it's shortest from diff to gearbox casing however the spring hangers are at the back so the axle also moves away from the box at the same time so travel is a minimum if fitting a longer prop then the axle should be moved back on the leafs the same amount now on a pick up it has loads of clearance but the van has body work to put holes in the tyres so is not advised.
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Re: Vibrating/rough pulling

Post by d1noh on Fri Jun 21, 2013 11:01 pm

Thanks Rich, I got it now
Sorry wasn't thinking of fitting the loger prop but was trying to work out why they are longer and shackles longer too, Ash has moved his axle higher would a pick up prop be better?
My case is with a machine on on one sits on the buffers which is a Mot fail, so removal of buffers and longer spring hangers should keep the prop from bottoming out  
As I said im hear to learn, thanks for todays lesson Very Happy
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Re: Vibrating/rough pulling

Post by rich the mechanic on Fri Jun 21, 2013 11:23 pm

Ash hasn't increased the travel so no to the longer prop, however if you use a old RWD escort lowering kit but with the axle under the leafs will act as a jack up kit to help your load clearance and with a little help bouncing it you should be able to adjust the axle placement to allow clear travel on the sliding link if needed and just make sure the body doesn't foul as thats also a MOT fail.
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Re: Vibrating/rough pulling

Post by bushwhacker on Thu Jun 27, 2013 2:52 pm

woody wrote:There is a 20mm difference in length, and not interchangeable. The Pickup prop is 340 mm centre
to centre of cups and the vans are 320mm centre to centre. Doesnt sound a lot but the longer prop on a van when under full load of weight can damage rear of gearbox.
For completeness 1.0 Efi propshaft:
Outer Diameter 57mm
Distance between joints  Pickup 280(334) mm         Van 505(563) mm

Dimensions in parentheses are for a former model which is not identified -- possibly the carburettor model?

'Because of changes in engine mounting position and transmission overall length, the overall length of the propshaft has been reduced'.

(I checked the carburettor section of the workshop manual but there was only a picture, no dimensions).
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