finally started my r33 diff swap
Thread Starter
Registered User
Joined: Jun 2009
Posts: 215
Likes: 0
From: In the Mountains of PA
Looks like a good project but I already see 2 issues....first is the axles spacing from hub to diff even though it bolts right up its going to be too long coz from what i can see from the pictures the R33 diff is a lil wider than the S's diff....then next is the flange which will be the weakest point since its going to be 2 piece and just welded on but since your not running high HP's it might hold.
Just in my perspective though but since you have the hands on hope you can pull this off and be added to the list of other better alternative and cost effective replacement for our stock diff.
Just in my perspective though but since you have the hands on hope you can pull this off and be added to the list of other better alternative and cost effective replacement for our stock diff.
also my S is making over 400hp. with the flange being welded, it will be done by a pro and shouldnt break at all. i mean why would it break if the welds on the driveshafts arent breaking. then the axles and tranny will be the next weakest thing after this is done. and if i do buy new axles eventually i could always have shorter ones made for the same price as regular s2000 DSS axles. but im trying to stay away from that now. thats down the road. i hope.
Joined: Mar 2010
Posts: 4,742
Likes: 211
think of it this way, with the diff being all about 1.5 inches wider you can just think of that extra width as the spacers you would usually put on a lowered s2000. and if need although i dont wont to change the angle of the axle i can make the mounts so it places the diff higher so the axles have more distance to travel.
also my S is making over 400hp. with the flange being welded, it will be done by a pro and shouldnt break at all. i mean why would it break if the welds on the driveshafts arent breaking. then the axles and tranny will be the next weakest thing after this is done. and if i do buy new axles eventually i could always have shorter ones made for the same price as regular s2000 DSS axles. but im trying to stay away from that now. thats down the road. i hope.
also my S is making over 400hp. with the flange being welded, it will be done by a pro and shouldnt break at all. i mean why would it break if the welds on the driveshafts arent breaking. then the axles and tranny will be the next weakest thing after this is done. and if i do buy new axles eventually i could always have shorter ones made for the same price as regular s2000 DSS axles. but im trying to stay away from that now. thats down the road. i hope.
Thread Starter
Registered User
Joined: Jun 2009
Posts: 215
Likes: 0
From: In the Mountains of PA
Originally Posted by barhonda_s2k' timestamp='1319757627' post='21107774
think of it this way, with the diff being all about 1.5 inches wider you can just think of that extra width as the spacers you would usually put on a lowered s2000. and if need although i dont wont to change the angle of the axle i can make the mounts so it places the diff higher so the axles have more distance to travel.
also my S is making over 400hp. with the flange being welded, it will be done by a pro and shouldnt break at all. i mean why would it break if the welds on the driveshafts arent breaking. then the axles and tranny will be the next weakest thing after this is done. and if i do buy new axles eventually i could always have shorter ones made for the same price as regular s2000 DSS axles. but im trying to stay away from that now. thats down the road. i hope.
also my S is making over 400hp. with the flange being welded, it will be done by a pro and shouldnt break at all. i mean why would it break if the welds on the driveshafts arent breaking. then the axles and tranny will be the next weakest thing after this is done. and if i do buy new axles eventually i could always have shorter ones made for the same price as regular s2000 DSS axles. but im trying to stay away from that now. thats down the road. i hope.
Thread Starter
Registered User
Joined: Jun 2009
Posts: 215
Likes: 0
From: In the Mountains of PA
when i say ive seen similar things done before, i mean miatas with ford rear diff conversions, and just a mix of hot rods and muscle cars and v8 swaps that require a beefier diff. thats why the place that will be doing this i will trust if they say it will work.
also if you look at any oem driveshaft you will see where the ends are welded on. well think of it this way, those welds arent any stronger then any other welds. if anything the new welds will be stonger then the old ones.
Registered User
Joined: Jun 2009
Posts: 1,555
Likes: 2
From: greenville sc
Looks like its gonna fit pretty good. Nice job on the research. I wouldn't worry at all about welding the flanges either. You'll break the driveshaft in half before you even crack a weld if its done properly. My brother puts 700hp through welded flanges on his mudtruck. If they hold up to 2.5ton rockwells and a 542 big block I doubt you'll hurt it with a f20. 
