S14 non-abs R200 w/ S15 HLSD + 3.91 J30 R&P? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

600supersport · 10-26-2013, 08:38 PM

I have the S15 HLSD with the correct 6 bolt output shafts to match.

I also got a complete J30 R200 diff (5 bolt outputs) from a '93 or 94 to use the 3.91 ring & pinion.

I have a non-abs S14 (stock driveshaft). I know the HLSD should be a direct fit, but since i added a good amount of power, the 4.08s seem a bit too short which is why i went for the 3.91s.

I'm about to tear the whole rear end down soon to do all the bushings poly/aluminum and put together my ideal R200, but now i'm a bit unclear if the J30 R&P is going to work with the "ring thickness" this and "housing length" that, then J30 axels or different driveshaft if the correct housing is longer? I thought i was confident before i bought it, but it'd be nice to make sure before i do if anyone cares to confirm or deny for me that the J30 R&P is gonna fly...

g00se · 10-27-2013, 09:51 AM

same but if your are making that much power go with a q45

600supersport · 07-04-2014, 12:50 PM

can anyone that's actually don't this combo or something like it chime in please. I thought this would all go together into my s14 VLSD diff, but the 3.91 ring is 1/4" longer than the 4.08 and won't allow the whole diff to fit into place...unless I just have something set wrong.

jr_ss · 07-05-2014, 07:17 AM

Do you mean a .250" wider? You may have to change out shim stacks to get the unit to fit in there correctly. It's not always a direct swap/fit.

600supersport · 07-05-2014, 07:40 AM

yeah, it's .25" wider. there's the 2 small washers that are maybe 1-2mm wide and one 'larger' spacer that's closer to 6.4mm or .25". I didn't even try installing without that spacer or even measuring it yet. do I have to have some kind of spacer if it fits really tight without it (if I don't have to just change the spacer size)?

jr_ss · 07-05-2014, 07:45 AM

You don't have to have a shim/spacer if it fits tight without it, but it needs to be setup up right. If you have an FSM, I'd read through the differential setup section for specifics.

600supersport · 07-05-2014, 07:49 AM

deciding to reassemble at 12:15 am was a mistake, it was just a matter of getting the spacer and washers in the correct order and took no time.

10-26-2013, 08:38 PM	#1
600supersport Zilvia Junkie Join Date: Aug 2010 Location: buffalo, ny Posts: 348 Trader Rating: (10) Feedback Score: 10 reviews	S14 non-abs R200 w/ S15 HLSD + 3.91 J30 R&P? I have the S15 HLSD with the correct 6 bolt output shafts to match. I also got a complete J30 R200 diff (5 bolt outputs) from a '93 or 94 to use the 3.91 ring & pinion. I have a non-abs S14 (stock driveshaft). I know the HLSD should be a direct fit, but since i added a good amount of power, the 4.08s seem a bit too short which is why i went for the 3.91s. I'm about to tear the whole rear end down soon to do all the bushings poly/aluminum and put together my ideal R200, but now i'm a bit unclear if the J30 R&P is going to work with the "ring thickness" this and "housing length" that, then J30 axels or different driveshaft if the correct housing is longer? I thought i was confident before i bought it, but it'd be nice to make sure before i do if anyone cares to confirm or deny for me that the J30 R&P is gonna fly...

07-05-2014, 07:17 AM	#4
jr_ss Post Whore! Join Date: Dec 2005 Location: Pa Posts: 6,415 Trader Rating: (35) Feedback Score: 35 reviews	Do you mean a .250" wider? You may have to change out shim stacks to get the unit to fit in there correctly. It's not always a direct swap/fit. __________________ My SR20VET Does your VTC gear rattle in your S14/15 SR? PM me.

07-05-2014, 07:45 AM	#6
jr_ss Post Whore! Join Date: Dec 2005 Location: Pa Posts: 6,415 Trader Rating: (35) Feedback Score: 35 reviews	You don't have to have a shim/spacer if it fits tight without it, but it needs to be setup up right. If you have an FSM, I'd read through the differential setup section for specifics. __________________ My SR20VET Does your VTC gear rattle in your S14/15 SR? PM me.

07-05-2014, 07:49 AM	#7
600supersport Zilvia Junkie Join Date: Aug 2010 Location: buffalo, ny Posts: 348 Trader Rating: (10) Feedback Score: 10 reviews	deciding to reassemble at 12:15 am was a mistake, it was just a matter of getting the spacer and washers in the correct order and took no time. Last edited by 600supersport; 07-06-2014 at 06:51 PM..

10-27-2013, 09:51 AM	#2
g00se Zilvia Junkie Join Date: Aug 2008 Location: CA Posts: 383 Trader Rating: (7) Feedback Score: 7 reviews	same but if your are making that much power go with a q45

07-04-2014, 12:50 PM	#3
600supersport Zilvia Junkie Join Date: Aug 2010 Location: buffalo, ny Posts: 348 Trader Rating: (10) Feedback Score: 10 reviews	can anyone that's actually don't this combo or something like it chime in please. I thought this would all go together into my s14 VLSD diff, but the 3.91 ring is 1/4" longer than the 4.08 and won't allow the whole diff to fit into place...unless I just have something set wrong.

07-05-2014, 07:40 AM	#5
600supersport Zilvia Junkie Join Date: Aug 2010 Location: buffalo, ny Posts: 348 Trader Rating: (10) Feedback Score: 10 reviews	yeah, it's .25" wider. there's the 2 small washers that are maybe 1-2mm wide and one 'larger' spacer that's closer to 6.4mm or .25". I didn't even try installing without that spacer or even measuring it yet. do I have to have some kind of spacer if it fits really tight without it (if I don't have to just change the spacer size)?