Talkin the talk... q45 r230 r200 z30 & so on & so on
Posted 06 February 2006 - 04:23 PM
Posted 06 February 2006 - 04:27 PM
Jon Mortensen, owner/operator www.petdoorstore.com
Posted 06 February 2006 - 04:54 PM
What are the price ranges for r200s with a clutch LSD?
How can i spot a VLSD so i know to stay away from it?
What is the name of the part with 6 holes?
the halfshafts bolt up to that right?
I only have 4 bolt holes?
are these all q45 r200's?
Will someone explain this
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Posted 06 February 2006 - 06:24 PM
Then there is a halfshaft which connects the diff's stub shaft to the stub axle. Yours has 4 studs on the stub shaft end and 4 holes on the companion flange end because your diff uses the U-jointed halfshafts.
The newer diffs use CV jointed halfshafts instead. The CV's are stronger. If you have the VLSD you HAVE to convert to the special stubs and CV's that fit the VLSD. As explained before this is expensive as you need shorter custom shafts, and you end up needing 4 CV shafts to get all of the proper CV joints to make the new shafts work. PITA and expensive.
With an open diff or a CLSD you can use the original stub shaft and the U-jointed halfshaft. Just slide the stub shafts into the diff and bolt up your U-jointed halfshafts.
If you want something stronger that will handle more torque you can convert to CV shafts from a 280ZX Turbo or a 300ZX turbo with adapters made by Modern Motorsports - www.modern-motorsports.com. I think they make the necessary pieces to use the VLSD CV shafts as well.
Jon Mortensen, owner/operator www.petdoorstore.com
Posted 07 February 2006 - 03:24 AM
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Posted 13 March 2006 - 06:24 AM
R200 3.90 Open Diff(ie non LSD) from a 88 NA Z31
280Z Mustache Bar
280Z Half Shafts
Posted 16 March 2006 - 11:38 PM
Posted 27 March 2006 - 11:10 AM
and you should prob up-grade to 280z stub axles 27 spline compaired to 240 25 spline
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Posted 02 April 2006 - 12:18 PM
Posted 18 April 2006 - 10:17 PM
Yeah that's right an L28ET in an S13.
Posted 25 May 2006 - 02:14 PM
Posted 25 May 2006 - 02:27 PM
Just to verify is the gear ratio in the Q45 R200 always 3.54?
R200V Short nose, Q45 1989-1996 , 6 Bolt ouput shafts
Posted 17 June 2007 - 01:55 PM
Has anybody had any luck rebuilding one of these diffs? Or should I be looking for a lower mileage unit to replace mine?
Let me know as I need to get all of this new found power to hook up.
Posted 26 July 2007 - 05:28 PM
All Q45's used the R200 casing, however they use 300ZX TT SIZED hubs, output shafts, and axles. They also use the same spline count, so you can use a 300ZX Hub or a Q45 hub when upgrading to the Q45 differential.
I think most people look at the size of the axles, hubs, and output shafts and assume it's a R230 diff.
The 90-96 Q45 used a 3.54 and the 97-01 used a 3.69 final gear.
The 90-96 Q45 uses the same 6-bolt axles as the ones found in the 300ZX TT, not sure about the 97+ as I haven't pulled one from a junkyard yet.
This differential is the best kept secret for the Nissan enthusiast who doesn't want to have to spend the money to modify their subframe for the R230 300ZX TT differential.
I have been having a problem with my R200 (Non-VLSD 240SX) differential breaking output shafts. The output shafts are way too tiny, and snap inside the differential.
With the Q45 differential, the output shafts are literally about 2 1/2 inch thick, or about twice the size of the output shafts found in the R200 240SX diff.
Just some food for thought.
Posted 02 January 2008 - 09:59 AM
If you donâ€™t know if the 280-Z "came with" an LSD, please do NOT ask that here!
If you donâ€™t know if the Z-31 R-200 can handle V-8 power with an automatic, Donâ€™t ask that here!!!
All that stuff has been beat to death and most likely answered in other â€œstickyâ€ threads, so please search and read more, and donâ€™t ask elementary questions in the "stickys"!!!!!
Please keep this on topic.
Posted 15 January 2008 - 09:16 PM
I would hesitantly suggest that this thread no longer hold enough merit on its own for it to remain a Sticky.. Jmortensen's encyclopedic post regarding rear diffies in our Z-cars MORE than covered every subject covered here. *Maybe* add a brief "language primer" (r230, VLSD, q45 etc) to the first post in JM's thread.. but other than that, this thread is confusing, incomplete, meandering, and not as easy to digest and absorb as the two other stickies covering this topic; namely, JM's "Diff/CV/LSD/....." thread and the "complete differential list (please help)" thread started by cyrus.
OP of this thread: I am sorry to denigrate your thread here, but I make this suggestion for the good of the Land. Mods: If you disagree, please simply delete this posting, with my humble apologies
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Posted 25 February 2008 - 10:37 PM
All Z31's (84-89 300zx) came with LONG NOSE R200's
Later 87's-89 z31 TURBO'S ONLY ALL came with some form of LSD (Mostly CLSD)
ONLY the 88SS z31 came with the R200 Vlsd
VERY FEW 88 turbo's are the SS model.
ONLY the 90-96 Q45's(some say 89) have the R200VLSD with the beefy 6 bolt input shafts (30 spline) which are the same as the TT's (30 spline), and they ARE NOT twice the size of the 240sx splines which are 29 spline.
The 90-96 Q45's carrier (inside parts) will swap over to the 84-89 z31 r200 case. All that is needed is to swap ring gears. But then you have to custom make half shafts. This is where I am at now.
97 q45's do have the R200vlsd but it IS NOT the larger one like the 90-96. ONLY THE 6 BOLTS input shafts are the beefy 30 spline.
Posted 27 February 2008 - 04:28 PM
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