Modifying Driveshafts?

celica_tommo · Post by **celica_tommo** » Thu Jun 03, 2004 11:01 pm

whats involved in shortening a driveshaft?

is the only way to get splines cut further down it and the end cut off or can they cut it in the middle and rejoin it somehow

basically I need to know what kinda price I should expect and whatever you know about how they do it

also anyone know of any good machinists/engineers to do it around the Palmy area?

celica_tommo · Post by **celica_tommo** » Wed Jun 09, 2004 10:45 pm

rxtoy · Post by **rxtoy** » Thu Jun 10, 2004 5:02 pm

for RWD:

don't know of anywhere to do it but basically you give them your input and output end, tell them the length you want it, how many universals, etc and they weld it up and balance it.

its not the sort of job you should be doing at home though

for FWD????

rxtoy · Post by **rxtoy** » Thu Jun 10, 2004 5:04 pm

for RWD:

don't know of anywhere to do it but basically you give them your input and output end, tell them the length you want it, how many universals, etc and they weld it up and balance it.

its not the sort of job you should be doing at home though

for FWD????

celica_tommo · Post by **celica_tommo** » Thu Jun 10, 2004 5:48 pm

yeah, fwd but it's basically the same idea... specifically modifying though

rxtoy · Post by **rxtoy** » Thu Jun 10, 2004 9:01 pm

fwd driveshafts are pretty different to rwd driveshafts, thats not to say they can't be modified. why do you want to shorten them????

i know its been done before, can't think off hand of who's done it though.

i think you'd probably have to have something custom machined up unless there's something from a different vehicle that will fit.

what are they for?

celica_tommo · Post by **celica_tommo** » Thu Jun 10, 2004 9:09 pm

its to adapt gearbox and driveshafts to another vehicle... I'm just wondering if they machine the spline down the shaft at the cvs to do it or use some other technique

Bazda · Post by **Bazda** » Thu Jun 10, 2004 9:50 pm

up here in aucks, precision engineering shortens them for like $90 each

celica_tommo · Post by **celica_tommo** » Fri Jun 11, 2004 9:13 pm

hmmmm... bout what i thought

celica_tommo · Post by **celica_tommo** » Fri Jun 18, 2004 1:42 pm

for future reference I eventually found after ringing around that Motor Machinists in Palmerston North does it

They shorten it by actually cutting it in the middle and welding it back together and balancing.... was quoted $180 for the two

Snoozin · Post by **Snoozin** » Fri Jun 18, 2004 3:07 pm

Another lot you can try is Manawatu Hydraulics, a mate of mine works there, and he always talks about how he re-splines axles etc etc. and even makes some from scratch!

May cost more though if another spline has to be machined!

KE10 door slammer · Post by **KE10 door slammer** » Sat Jun 19, 2004 2:50 pm

gear cutting services in auckland did mine on my mx5 for $75 each including heat treating

celica_tommo · Post by **celica_tommo** » Fri Jul 02, 2004 5:10 pm

well now I'm pissed off :evil:

after checking up with motor machinists that they do actual shorten driveshafts and discussing with them how they do it and a price I took my driveshafts in today to get them done and guess what?... of course they dont do it any more. $&#$% bastards

So I'll be trying your guys suggestions... keep them coming

Also if anyone has some driveshafts lying around I might be interested in them especially if you have some supercharged GTZ levin/trueno ones... dont really need the cv joints either