guitar mad Posted September 29, 2009 Author Report Share Posted September 29, 2009 its on :P Quote Link to comment Share on other sites More sharing options...
philbey Posted September 30, 2009 Report Share Posted September 30, 2009 Any idea on the price it's costing to shorten it? Quote Link to comment Share on other sites More sharing options...
Sam_Q Posted October 2, 2009 Report Share Posted October 2, 2009 the standard diffs for them are the cone type though and from the reports I get don't lock hard from even the factory. Any idea on wha it costs to get an axle shortened? Quote Link to comment Share on other sites More sharing options...
vltrb-0 Posted January 6, 2010 Report Share Posted January 6, 2010 the standard diffs for them are the cone type though and from the reports I get don't lock hard from even the factory. Any idea on wha it costs to get an axle shortened? you can get billet axles made up from $300-750 depending on specs, and be careful how axles are shortend some less than par workshops will cut a section out of the axle and weld it back together when they should be docking it to length and resplining it if you supply a diff your looking at about $1000 to get it shortend to suit Quote Link to comment Share on other sites More sharing options...
Sam_Q Posted January 6, 2010 Report Share Posted January 6, 2010 rewelding an axle, thats some scary shit anyway I did some research on my own and I found I can get the axle shorted for $160 each side, however due to the shape of the axle I would need to use the long axle to do the shorter side. On an R31 diff this is the only side you want to do, the big bonus is the diff pinion ends up being close to the middle. I may off this service in the future if there is enough demand, it would be tricky to chop and reweld the diff housing accurately but I think I would be up for it. Anyone else done it? Quote Link to comment Share on other sites More sharing options...
oh what a nissan feeling! Posted January 6, 2010 Report Share Posted January 6, 2010 Yeh, done it. in a ke25 the pinion ends up within 10mm off centre using the short axel in the long side. My uncle has made up a jig for shortening these diffs, You bolt the diff to the jig with backing plate bolts, bolt the tube sections via the brake bolts to a sliding type arrangement on both sides, slide in, and weld up. easy. The hard part is the heat involved in most cases warps the housing. So a bit of heating and shrinking to straighten the whole thing out again is the time consuming part, and the part where some serious metalworking experience helps. Quote Link to comment Share on other sites More sharing options...
Sam_Q Posted January 6, 2010 Report Share Posted January 6, 2010 that doesnt make sense to me, looking at the diff the one with the shorter axle is on the longer side. it's the shorter side that needs to be shortened more or else it ends up being even more lopsided so you can't use 2 short axles, and yet you have done it, somethings amiss here. Quote Link to comment Share on other sites More sharing options...
oh what a nissan feeling! Posted January 6, 2010 Report Share Posted January 6, 2010 Sorry, to clarify. no, you definately cannot use two short axels. Both sides of the housing need to be shortened, short axle goes in other side, long axle gets shortened to suit desired vehicle length. Quote Link to comment Share on other sites More sharing options...
Sam_Q Posted January 6, 2010 Report Share Posted January 6, 2010 thats more like it and I mostly agree, for something like your ke25 yes no doubt both sides have to be shortened. However for a KE70 or AE I would think just shortening the short side is more than enough. For an ae86 to take it back to standard size 64mm needs to come off. I believe in this case it would shift the offset of the diff from one side to roughly equally off on the other side. Quote Link to comment Share on other sites More sharing options...
oh what a nissan feeling! Posted January 6, 2010 Report Share Posted January 6, 2010 (edited) so the tailshaft would be offset by 64mm. everyone likes their ke70s so low, Tunnel clearance for tailshaft and pumpkin could be a big issue, The smallest measurements in reality can mean alot. My ke30 runs a shortened EB falcon diff, the tailshaft is offset by less than that, and the floor changes required were big. Dummy the diff up in a ke70 unshortened in a non-central type position (64mm to one side) and check it out before doing the chop i think. Edited January 6, 2010 by oh what a nissan feeling! Quote Link to comment Share on other sites More sharing options...
Sam_Q Posted January 6, 2010 Report Share Posted January 6, 2010 well thats what you would think would happen but it doesn't. This is because the diff is on a fairly decent offset already, I wouldn't be surprised if it is about the half of the shortened amount at 32mm. As an educated guess it will just end up being an equal offset the other way. Quote Link to comment Share on other sites More sharing options...
vltrb-0 Posted January 13, 2010 Report Share Posted January 13, 2010 well thats what you would think would happen but it doesn't. This is because the diff is on a fairly decent offset already, I wouldn't be surprised if it is about the half of the shortened amount at 32mm. As an educated guess it will just end up being an equal offset the other way. i'll be doing this in a few weeks hopefully we'll see how it turns out, looking at using a 9 inch rear shortend just need to find a semi afordable one Quote Link to comment Share on other sites More sharing options...
Sam_Q Posted January 13, 2010 Report Share Posted January 13, 2010 for what car/engine/trans combo? Quote Link to comment Share on other sites More sharing options...
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