Info on swapping a Q45 ring and pinion inot a S chasis R200

[Tenchuu]

I tossed a 3.5 Q45 gears on a S15 HLSD in a S14 open diff casing.

Just a heads up here since this info wasn't easily attainable. the key is that you have to either find aftermarket shims (the shop i had do it managed to, but not easily) or machine down the pinion height adjustment washer to roughly 1/4 the standrd height. I believe the total as around 62 thousandths of an inch, but i do know that it was roughly 1/4 the normal height.


the spacer is the one in red and yellow below:
http://i2.photobucket.com/albums/y19/Tenchuuk/car/difexp.jpg
also Nissan doesn't make a shim kit for it, and all the spacers they have are far too large to do the job.

moral of the story: try to get an extra one and have it made, or find shims that will work. also i will provide Inside diameter and outside diameter measurements here soon as soon as i pick up my replacement calipers.

[skylindrftr]

why not just buy a q45 diff? I have one for sale =)

[UNISA JECS]

I tossed a 5.3 Q45 gears on a S15 HLSD in a S14 open diff casing.

Just a heads up here since this info wasn't easily attainable. the key is that you have to either find aftermarket shims (the shop i had do it managed to, but not easily) or machine down the pinion height adjustment washer to roughly 1/4 the standrd height. I believe the total as around 62 thousandths of an inch, but i do know that it was roughly 1/4 the normal height.


the spacer is the one in red and yellow below:
http://i2.photobucket.com/albums/y19/Tenchuuk/car/difexp.jpg
also Nissan doesn't make a shim kit for it, and all the spacers they have are far too large to do the job.

moral of the story: try to get an extra one and have it made, or find shims that will work. also i will provide Inside diameter and outside diameter measurements here soon as soon as i pick up my replacement calipers.

Nissan/Infiniti both sell parts (5) and (8) in many different sizes.

Correct your final drive info its 3.538 not 5.3.

[Tenchuu]

why not just buy a q45 diff? I have one for sale =)

because you have to bastardize the thing in with a bunch of different axles to make it work. and since you have to do that my S15 HLSD won't work.


Nissan/Infiniti both sell parts (5) and (8) in many different sizes.

Correct your final drive info its 3.538 not 5.3.

i checked in the FSM, all the nissan sizes are around 3mm, the auctual size was around 1/4 that as i stated.

[turbo2nr]

intresting info here..

im looking to swap a r&p+vlsd form a z32 (r230v) into a r200 pumkin think it would fit? im worrie about the axle shafts do i use the r200 or the r230v?

[UNISA JECS]

intresting info here..

im looking to swap a r&p+vlsd form a z32 (r230v) into a r200 pumkin think it would fit? im worrie about the axle shafts do i use the r200 or the r230v?

That wont work any kinda way, im pretty sure its to big to fit into a R200 case..

[g6civcx]

That wont work any kinda way, im pretty sure its to big to fit into a R200 case..

At that point, I would just swap over the entire R230 diff. What's the point of trying to cram everything into an R200 case?

[UNISA JECS]

At that point, I would just swap over the entire R230 diff. What's the point of trying to cram everything into an R200 case?

I know for real! but then again the R230 case is to big to fit any s chassis subframe anyways.

But anyhow why not just use Q45 parts teh diff 3.538, the ring gear bolts are beefier 13mm ones, and the differential uses 30 spline outputshafts 6x1 pattern.

The differemce on the R230 is ofcourse ring gear 230mm vs 200mm and the R230 uses 31spline outshafts 6x1 pattren.

[g6civcx]

I know for real! but then again the R230 case is to big to fit any s chassis subframe anyways.


What's easier, enlarging the R200 case for a 230mm ring gear, or modifying the subframe to accept an R230 case?

[UNISA JECS]

What's easier, enlarging the R200 case for a 230mm ring gear, or modifying the subframe to accept an R230 case?

Honestly using a Q45 VLSD and changing the companion flange to one from a J30 VLSD and your done, ofource you need driver side axles from a Z32 TT and a Q45 and larger 5 lug hubs.

[UNISA JECS]

There a few things you can do here aswell.

Say you dont wanna use the larger 5 lug hubs not a problem all you have to do is use the outter CV joint from a standard size 5 lug hub found on the J30 or Z32 NA and swap this part over onto your Z32TT and Q45 axles, now you use the standard 5 lug hubs or stay 4 lug.

[let5l1de]

I have the Z32TT axle and CV joints.

~m

[g6civcx]

Honestly using a Q45 VLSD and changing the companion flange to one from a J30 VLSD and your done, ofource you need driver side axles from a Z32 TT and a Q45 and larger 5 lug hubs.

What if he's dead set on a 230mm ring gear?

[UNISA JECS]

What if he's dead set on a 230mm ring gear?

That I dont know my best guess is that the 230mm ring gear bolt pattern is larger and therefore requires the use of a R230 differential and by the looks of it if you ever seen a R230 VLSD its wider, I doubt you could swap a R230 ring gear into R200 because it looks like it would require a R230 diffferential and as stated above it looks wider and wouldn't work in a R200 case.

[g6civcx]

I'm actually interested in the R230 diff to hold more power. Maybe I'll get to it one day.

[turbo2nr]

makes alot of sense now concidering that the r230v uses a 230mm ring gear..

the only reason i was using a tt 230v was because i was getting one w/ axles for $75.. and i want the long gearing..

[UNISA JECS]

makes alot of sense now concidering that the r230v uses a 230mm ring gear..

the only reason i was using a tt 230v was because i was getting one w/ axles for $75.. and i want the long gearing..

The only part you would be able to use would be the drivers side axle (from the Z32 TT) on the passanger side of yoru s-chassis. Im almost 100% certain you cant use anything else.

The Q45 diff has the same gearing and the Z32 TT and is still beefier than your average R200(V) but its works in the s-chassis.

[UNISA JECS]

makes alot of sense now concidering that the r230v uses a 230mm ring gear..

the only reason i was using a tt 230v was because i was getting one w/ axles for $75.. and i want the long gearing..

If your interested turbo2nr I have this setup below.

R200(V) 3.538 R&P with 13mm ring gear bolts

Picture
http://i167.photobucket.com/albums/u159/zilvia_album/P1010227.jpg
http://i167.photobucket.com/albums/u159/zilvia_album/P1010235.jpg

[Grantspec]

The earlier q45 diffs are standard r200 cases, the VLSD inside however uses different output shafts than the 240sx, J30. I just got done helping a friend swap his s15 helical chunk and output shafts into a q45 case with the q45 ring and pinion (3.5 ish gear ratio). We used the shims that were already in the q45 diff and everything spec'd out perfectly. We also swapped the input flange for the smaller J30 input flange that has the correct bolt pattern for the s14 drive shaft. After that it bolted right up into his s14. If you put the q45 diff case up next to the s14/j30 case it is exactly the same...even has the same casting numbers marked on it.

One advantage we found to using the Q45 ring gear was that it already used the 13 mm bolts which match the holes in the Helical diff. The 240sx and J30 ring gear and diff uses 12 mm bolts. This eliminates the need for special bushings or the Nismo bolts that have the 13 mm shoulder on them.

Hope this helps.

[UNISA JECS]

The earlier q45 diffs are standard r200 cases, the VLSD inside however uses different output shafts than the 240sx, J30. I just got done helping a friend swap his s15 helical chunk and output shafts into a q45 case with the q45 ring and pinion (3.5 ish gear ratio). We used the shims that were already in the q45 diff and everything spec'd out perfectly. We also swapped the input flange for the smaller J30 input flange that has the correct bolt pattern for the s14 drive shaft. After that it bolted right up into his s14. If you put the q45 diff case up next to the s14/j30 case it is exactly the same...even has the same casting numbers marked on it.

One advantage we found to using the Q45 ring gear was that it already used the 13 mm bolts which match the holes in the Helical diff. The 240sx and J30 ring gear and diff uses 12 mm bolts. This eliminates the need for special bushings or the Nismo bolts that have the 13 mm shoulder on them.

Hope this helps.

I concur, but the only J30 with the same casing and uses teh 13mm ring gear bolts is form 1 12/96 production date.

I laid out a bunch of info here to that people might find useful Install Guide: Q45 Differential swap into 240SX subframe - FreshAlloy.com Forums (http://www.freshalloy.com/forums/showthread.php?t=172393) same user name UNISA JECS

[salyardsk]

If you still have the R&P, I would be interested in purchasing them. How much? Thanks.

If your interested turbo2nr I have this setup below.

R200(V) 3.538 R&P with 13mm ring gear bolts

Picture
http://i167.photobucket.com/albums/u159/zilvia_album/P1010227.jpg
http://i167.photobucket.com/albums/u159/zilvia_album/P1010235.jpg

[NismoSilvia270R]

nice. i am excited on the proof. we kicked this r&p swap around in this thread:
http://zilvia.net/f/tech-talk/213491-argh-final-drive-swappin-2.html
but it's nice to see what actually works.

looks like im swapping an s15 3.692 r&p into an s14 pumpkin using one stock s14 pinion spacer and one custom pinion spacer.

baller

[NismoSilvia270R]

i also saw this:
:: Gary Simmons :: (http://www.d-rated.com/site.aspx?page=Q45%203.54%20RP%20Install)

this guy suggested using a custom spacer on the opposite end of the pinion as Unisa Jecs suggested.

[Tenchuu]

on a side note i decided not to use this. it is now sitting in my garage without the HLSD in it. if anyone wants the thing get in touch and we could probably work something out.

EDIT-- sold it locally up here in Pacific NW.