LSD which is better - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

drifting240racer · 02-26-2002, 03:08 PM

What is the difference between vLSD and Quaife torque biasing differential and any other diferentials? Which is better or what is the different apps. for the differentials?

Also does anyone have one of those for their 240sx?

(P.S. Sorry if the Quaife diff has been discussed before. I know about the vLSD but not about the Quaife)

*AceInHole* · 02-26-2002, 03:12 PM

IIRC, the Quaife is mechanical, and provides a better more adjustable lock compared to the VLSD.

Takumi · 02-26-2002, 04:08 PM

Quaife = A high quality LSD that's not available for 240SX's. BOOOOOOOOOO! *thumbsdown*

*sykikchimp* · 02-26-2002, 04:13 PM

There is so one available for the 240sx.  I've seen it.  (can't remember where though)  

Don't forget the KAAZ diff too.

*sykikchimp* · 02-26-2002, 04:15 PM

If you go to their website, they produce an R200 diff.  That is the same diff we use.  Also same as the 300zx.

Very expensive though

*sykikchimp* · 02-26-2002, 04:30 PM

Interesting Side fact I just found out.

Quaife Diff from Quaifeamerica is $1,195

they make a 5-speed and 6-speed Gear Kit for the Silvia as well.  I believe the SR and KA used the Same Trannies with different Bellhousings.  So this gear kit should work in a 240sx.  The only down-side is that it is a Dog-Type engagement gear kit, so SUCK for street use.  Of course with a price tag of $7,895 for the 6-speed gear kit, I don't think any of us will need to worry about this.

drifting240racer · 02-26-2002, 04:54 PM

Ya I saw that gear kit. Way over my price range. They did have a diff for the 240 on their website. I don't remember the site address right now but it is on the links page of my website for anyone who wants it. Groupbuy has some diffs from them right now that is why I asked.

Thanks for the feedback! Don't know what we younguns would do with out this site. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'> :biggrin:

Takumi · 02-26-2002, 08:36 PM

####, even if a Quaife unit is available and it costs a couple hundred installed more than a Kaaz, I'd choose the Quaife. Cuz with Kaaz, you'd have to change the differential oil almost as often as you do with your motor oil. Quaifes, I've heard, are maintenance free. @[email protected]

*sykikchimp* · 02-26-2002, 10:50 PM

you also have to replace the Diff clutch in the Kaaz.

whoizrob · 02-26-2002, 11:54 PM

The diffs are different in the way they work.  Our VLSDs work by having the two axles attached to parallel plates surrounded by fluid. As the two shafts spin at different speeds the fluid shears and starts to drag the other shaft, forcing the two to spin at a relatively similar speed. This means that there is a small lag in engagement.  Also these are not user servicable in any way nor are they adjustable in anyway (unless of course you are a chmist and can formulate different fluids with different shear properties)

The KAAZ is a clutch unit which acts like a car clutch. It too has plates which are spring loaded. when differing shaft speeds are encountered the shafts lock when the plates interface. These are user adjustable and come in one way lockers, 1.5 and two way lockers. The down side is they can be quite noisey when turning at full lock and they require LOTS of service to keep them running.

The Quaiffe is rightly known as the rolls royce of diffs but is VERY much more expensive than the other diffs. It is gear driven so you get no noise, no maintenance, and instantaneous engagement. It really isn't adjustable at all. Some people have stated that a high torque app can break the delicate gear mechanisms but Quaiffe has a great warantee.

Anyway, it all depends on what you want to spend and what kind of quality you want. If cost is no issue go for the Quaiffe. If you are budget limited buy a used R200 VLSD and be done with it. It works fine for most purposes and isn't really finicky at all.

HTH

Rob

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02-26-2002, 03:08 PM	#1
drifting240racer Leaky Injector Join Date: Feb 2002 Posts: 95 Trader Rating: (0) Feedback Score: 0 reviews	What is the difference between vLSD and Quaife torque biasing differential and any other diferentials? Which is better or what is the different apps. for the differentials? Also does anyone have one of those for their 240sx? (P.S. Sorry if the Quaife diff has been discussed before. I know about the vLSD but not about the Quaife)

02-26-2002, 03:12 PM	#2
AceInHole Autox Technician Join Date: Dec 2001 Location: New Haven, CT Age: 40 Posts: 3,961 Trader Rating: (0) Rides Gallery: AceInHole Feedback Score: 0 reviews	IIRC, the Quaife is mechanical, and provides a better more adjustable lock compared to the VLSD.

02-26-2002, 04:08 PM	#3
Takumi Zilvia Addict Join Date: Nov 2001 Location: Bay Area, CA Age: 40 Posts: 836 Trader Rating: (0) Feedback Score: 0 reviews	Quaife = A high quality LSD that's not available for 240SX's. BOOOOOOOOOO! thumbsdown

02-26-2002, 04:13 PM	#4
sykikchimp WOW addicted Join Date: Dec 2001 Location: the moon Age: 40 Posts: 6,518 Trader Rating: (0) Feedback Score: 0 reviews	There is so one available for the 240sx.  I've seen it.  (can't remember where though)   Don't forget the KAAZ diff too.

02-26-2002, 04:15 PM	#5
sykikchimp WOW addicted Join Date: Dec 2001 Location: the moon Age: 40 Posts: 6,518 Trader Rating: (0) Feedback Score: 0 reviews	If you go to their website, they produce an R200 diff.  That is the same diff we use.  Also same as the 300zx. Very expensive though

02-26-2002, 04:30 PM	#6
sykikchimp WOW addicted Join Date: Dec 2001 Location: the moon Age: 40 Posts: 6,518 Trader Rating: (0) Feedback Score: 0 reviews	Interesting Side fact I just found out. Quaife Diff from Quaifeamerica is $1,195 they make a 5-speed and 6-speed Gear Kit for the Silvia as well.  I believe the SR and KA used the Same Trannies with different Bellhousings.  So this gear kit should work in a 240sx.  The only down-side is that it is a Dog-Type engagement gear kit, so SUCK for street use.  Of course with a price tag of $7,895 for the 6-speed gear kit, I don't think any of us will need to worry about this.

02-26-2002, 04:54 PM	#7
drifting240racer Leaky Injector Join Date: Feb 2002 Posts: 95 Trader Rating: (0) Feedback Score: 0 reviews	Ya I saw that gear kit. Way over my price range. They did have a diff for the 240 on their website. I don't remember the site address right now but it is on the links page of my website for anyone who wants it. Groupbuy has some diffs from them right now that is why I asked. Thanks for the feedback! Don't know what we younguns would do with out this site. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'> :biggrin:

02-26-2002, 08:36 PM	#8
Takumi Zilvia Addict Join Date: Nov 2001 Location: Bay Area, CA Age: 40 Posts: 836 Trader Rating: (0) Feedback Score: 0 reviews	####, even if a Quaife unit is available and it costs a couple hundred installed more than a Kaaz, I'd choose the Quaife. Cuz with Kaaz, you'd have to change the differential oil almost as often as you do with your motor oil. Quaifes, I've heard, are maintenance free. @[email protected]

02-26-2002, 10:50 PM	#9
sykikchimp WOW addicted Join Date: Dec 2001 Location: the moon Age: 40 Posts: 6,518 Trader Rating: (0) Feedback Score: 0 reviews	you also have to replace the Diff clutch in the Kaaz.

02-26-2002, 11:54 PM	#10
whoizrob Join Date: Nov 2001 Posts: 29 Trader Rating: (0) Feedback Score: 0 reviews	The diffs are different in the way they work.  Our VLSDs work by having the two axles attached to parallel plates surrounded by fluid. As the two shafts spin at different speeds the fluid shears and starts to drag the other shaft, forcing the two to spin at a relatively similar speed. This means that there is a small lag in engagement.  Also these are not user servicable in any way nor are they adjustable in anyway (unless of course you are a chmist and can formulate different fluids with different shear properties) The KAAZ is a clutch unit which acts like a car clutch. It too has plates which are spring loaded. when differing shaft speeds are encountered the shafts lock when the plates interface. These are user adjustable and come in one way lockers, 1.5 and two way lockers. The down side is they can be quite noisey when turning at full lock and they require LOTS of service to keep them running. The Quaiffe is rightly known as the rolls royce of diffs but is VERY much more expensive than the other diffs. It is gear driven so you get no noise, no maintenance, and instantaneous engagement. It really isn't adjustable at all. Some people have stated that a high torque app can break the delicate gear mechanisms but Quaiffe has a great warantee. Anyway, it all depends on what you want to spend and what kind of quality you want. If cost is no issue go for the Quaiffe. If you are budget limited buy a used R200 VLSD and be done with it. It works fine for most purposes and isn't really finicky at all. HTH Rob