240sx Diff into 300zx?? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

jakethesnake · 01-23-2009, 12:16 PM

i searched but didnt find any real solid stuff. Will a Diff out of a 1990 240sx fit a 300xz?? I think it will since a 300zx diff will fit a 240sx right?? thanks for the help

supreme_1 · 01-23-2009, 03:09 PM

if at most your going to need to swap the internals from the diff out of the housing into the 3z diff. you will also need 3z output shafts

jakethesnake · 01-23-2009, 04:14 PM

yes i know about the output shafts but i was wondering if i swap those could i just fit the whole thing in

The Chad · 01-23-2009, 04:34 PM

So you are asking if the "pumpkin" of the diff will fit in the rear subframe? Of course. As far as the output shafts, you might need custom ones....

Why are you swapping these anyways!!!?????

racepar1 · 01-23-2009, 05:16 PM

The pumpkin will bolt right in, but you will need 5-bolt output shafts (which I don't think came on open diffs so have fun finding some) and your gear ratio will be way off. DON'T do it!!!

noname7198 · 01-23-2009, 07:33 PM

Why would the gear ratio be off? I thought all r200 diff's (240's and na 300zx's) had a 4.08 FD?

Kind of on the same topic. Would an aftermarket lsd for a 240 fit in a 300zx NA pumpkin? Kaaz shows different part numbers for a vlsd equipped 240 and na Z, but if they are both r200 with vlsd why wouldn't it work?

The Chad · 01-23-2009, 08:17 PM

Not all R200's are the same. I used to think so as well. I opted for the S14 VLSD rather than the J30 due to the different final drive gearing. Your Z32 is way taller of a final drive than any J30 or S chassis that i've seen (stock).

If you want something stock Nissan that is even higher of a final drive go for the Diff from the TT Z32, not an R200 though.

I keep trying to ask the same question WHY DO YOU WANT TO SWAP ANYTHING!!!??? If you own a Z, buy Z parts? Or are the S chassis parts that much cheaper??

01-23-2009, 12:16 PM	#1
jakethesnake Zilvia Member Join Date: Oct 2007 Location: somewhere Posts: 205 Trader Rating: (0) Feedback Score: 0 reviews	240sx Diff into 300zx?? i searched but didnt find any real solid stuff. Will a Diff out of a 1990 240sx fit a 300xz?? I think it will since a 300zx diff will fit a 240sx right?? thanks for the help

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01-23-2009, 03:09 PM	#2
supreme_1 Zilvia Addict Join Date: Sep 2007 Location: hawaii Posts: 612 Trader Rating: (12) Feedback Score: 12 reviews	if at most your going to need to swap the internals from the diff out of the housing into the 3z diff. you will also need 3z output shafts

01-23-2009, 04:14 PM	#3
jakethesnake Zilvia Member Join Date: Oct 2007 Location: somewhere Posts: 205 Trader Rating: (0) Feedback Score: 0 reviews	yes i know about the output shafts but i was wondering if i swap those could i just fit the whole thing in

01-23-2009, 04:34 PM	#4
The Chad Zilvia Addict Join Date: Feb 2007 Location: Richmond, VA Age: 40 Posts: 943 Trader Rating: (0) Feedback Score: 0 reviews	So you are asking if the "pumpkin" of the diff will fit in the rear subframe? Of course. As far as the output shafts, you might need custom ones.... Why are you swapping these anyways!!!?????

01-23-2009, 05:16 PM	#5
racepar1 Post Whore! Join Date: Jul 2007 Location: Simi Valley, CA Age: 38 Posts: 9,006 Trader Rating: (106) Rides Gallery: racepar1 Feedback Score: 106 reviews	The pumpkin will bolt right in, but you will need 5-bolt output shafts (which I don't think came on open diffs so have fun finding some) and your gear ratio will be way off. DON'T do it!!!

01-23-2009, 07:33 PM	#6
noname7198 Zilvia Junkie Join Date: Aug 2006 Location: MA Age: 36 Posts: 339 Trader Rating: (4) Feedback Score: 4 reviews	Why would the gear ratio be off? I thought all r200 diff's (240's and na 300zx's) had a 4.08 FD? Kind of on the same topic. Would an aftermarket lsd for a 240 fit in a 300zx NA pumpkin? Kaaz shows different part numbers for a vlsd equipped 240 and na Z, but if they are both r200 with vlsd why wouldn't it work?

01-23-2009, 08:17 PM	#7
The Chad Zilvia Addict Join Date: Feb 2007 Location: Richmond, VA Age: 40 Posts: 943 Trader Rating: (0) Feedback Score: 0 reviews	Not all R200's are the same. I used to think so as well. I opted for the S14 VLSD rather than the J30 due to the different final drive gearing. Your Z32 is way taller of a final drive than any J30 or S chassis that i've seen (stock). If you want something stock Nissan that is even higher of a final drive go for the Diff from the TT Z32, not an R200 though. I keep trying to ask the same question WHY DO YOU WANT TO SWAP ANYTHING!!!??? If you own a Z, buy Z parts? Or are the S chassis parts that much cheaper??