LSD?

killam · 12-04-2007, 07:39 PM

Hi i'm new to the board.
I searched around a bit but didn't find the answer i was looking for. I might be picking up a 89 mk1 with the NA 4AGE and i was wondering if it comes with LSD (both tires spin all the time)? Or is there anyway to tell without actually driving the car? Also do you have any tips on things to check for so i don't pick up a lemon.

Oteck · 12-04-2007, 08:01 PM

correct me if im wrong but the only year LSD ever became an option was for the +93T mr2s

canadam · 12-04-2007, 09:04 PM

I've heard rumors that some late model SCs had LSD as an option.

Oteck · 12-04-2007, 09:28 PM

i think i heard that too, maybe that limited edition 89 that had the mirror like t-top window

killam · 12-05-2007, 07:17 PM

Hmm rumors and maybes.... Does anyone have a more professional answer for me?

canadam · 12-05-2007, 07:43 PM

Quote:

Originally Posted by killam

Hmm rumors and maybes.... Does anyone have a more professional answer for me?

Professional? Call Toyota USA

I'd say if the car is a North American spec naturally aspirated '89 there is a 99.987654% chance that it does NOT have LSD.

driftmonster · 12-05-2007, 08:00 PM

Quote:

Originally Posted by canadam

Professional? Call Toyota USA

I'd say if the car is a North American spec naturally aspirated '89 there is a 99.987654% chance that it does NOT have LSD.

Exactly.

killam · 12-05-2007, 08:39 PM

The reason i asked is cause know that most older rx7s with drum brakes did Not. So i was curious if there was something like that i could look for.

killam · 12-06-2007, 12:06 PM

what would it take to upgrade to LSD?
Can i just replace the 3rd member from a 93+ or do you have to swap the the whole thing axles and all?

Mista 2 · 12-07-2007, 04:15 AM

Did/do all mk1 sc cars have factory lsd ? this might help, i know it doesnt give too much info though. you could upgrade to an sc box and other parts required (not too sure of everything you will need though).

killam · 12-07-2007, 10:11 AM

Im surprised at the lack of info on this subject.

E T Haggis · 12-07-2007, 11:31 AM

im sure someone knows about this but they just havent come across the thread yet ive read taht a good wat to test if your car has LSD is to jack up the rear tires so that they are off of the ground and spin them while the car is in neutral if both tires spin then you have LSD

fosley · 12-07-2007, 01:32 PM

Quote:

Originally Posted by Oteck

correct me if im wrong but the only year LSD ever became an option was for the +93T mr2s

Actually, the '03+ Spyders also got LSD options. Not that that's any more useful to a Mk1 owner.

There are a number of aftermarket LSD kits for the Mk1, but I don't think I've heard of one stock. According to this page, there's a Japanese TRD kit that may have gotten installed at the dealership, but it's not stock, per se (and I don't know if a US dealer would ever ship and install a JDM kit).

Angus · 01-19-2008, 08:25 PM

I have an ex Japan 1986 SC and it has LSD,and I believe it was factory fitted

here in NZ everybody fights over any LSD boxes that come up for sale

MrRed2 · 01-19-2008, 11:58 PM

Quote:

Originally Posted by killam

The reason i asked is cause know that most older rx7s with drum brakes did Not. So i was curious if there was something like that i could look for.

Rx-7's do not have transaxles and apart from being rwd, they are not a whole lot like the mr2. I do know that you can buy lsd's for mr2's on ebay now and again for about 800-900 bucks.

Kotaro10v2 · 02-18-2008, 11:32 PM

actuly my car has an LSD and it is an AW11 88 the best way to find out if you have an LSD is drive on ICE I fund that this winter I was traing to have some fun wan I notes that I will aways give all the Power to the tire that haved the moset traction. if you tray to lift up your car the turn the weels it will act like an open dif. well I thik that what I is a VLSD + if you have the C52 trani you my have an LSD but if you have the C50 gust get rib of it. the C52 trani very simelar to the 4A-GZ.
PS VLSD.s need constent care

LSG2007 · 02-20-2008, 10:48 AM

yeah i was gonna say that mazda and toyota are a completely different breed...

jazzcornet · 02-20-2008, 10:53 AM

LSD doesnt mean that both wheels spin all the time. that would be more of posi-trac or a locked differential. limited slip means just that, limited slip in the outer turn wheel.

mr2gq · 02-20-2008, 11:58 AM

Limited slip only kicks in when the tires break loose. So if you kick it and it leaves 2 black marks you know for sure its got it. If only 1 then negative

fosley · 02-20-2008, 12:31 PM

Well, not true. Our cars are balanced pretty well, so you can sometimes leave 2 black marks without LSD. If you only leave 1 black mark, you don't have LSD, but if you leave 2, you may still not have it.

I know you can usually tell the difference if you try to do doughnuts; LSD will do tight circles with the front end moving around a tighter circle than the back, while open diff will do wide circles with the front and rear moving at about the same distance from the center (ie, no LSD=no doughnut). This seems to only work on surfaces with good traction like asphalt though, since an open diff will do doughnuts on dirt just fine.

12-04-2007, 07:39 PM	#1 (permalink)
killam All Join Date: Dec 2007 Location: NH Posts: 6 Thanks: 2 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	LSD? Hi i'm new to the board. I searched around a bit but didn't find the answer i was looking for. I might be picking up a 89 mk1 with the NA 4AGE and i was wondering if it comes with LSD (both tires spin all the time)? Or is there anyway to tell without actually driving the car? Also do you have any tips on things to check for so i don't pick up a lemon.

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12-04-2007, 08:01 PM	#2 (permalink)
Oteck RAAAGE! Join Date: Aug 2005 Posts: 2,151 Thanks: 8 Thanked 60 Times in 57 Posts Blog Entries: 2 iTrader Rating: (3/100% )	correct me if im wrong but the only year LSD ever became an option was for the +93T mr2s

12-04-2007, 09:04 PM	#3 (permalink)
canadam MidshipExpress Join Date: Feb 2005 Location: Beautiful British Columbia Posts: 9,549 Thanks: 117 Thanked 129 Times in 112 Posts My Google Map iTrader Rating: (29/100% )	I've heard rumors that some late model SCs had LSD as an option.

12-04-2007, 09:28 PM	#4 (permalink)
Oteck RAAAGE! Join Date: Aug 2005 Posts: 2,151 Thanks: 8 Thanked 60 Times in 57 Posts Blog Entries: 2 iTrader Rating: (3/100% )	i think i heard that too, maybe that limited edition 89 that had the mirror like t-top window

12-05-2007, 07:17 PM	#5 (permalink)
killam All Join Date: Dec 2007 Location: NH Posts: 6 Thanks: 2 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	Hmm rumors and maybes.... Does anyone have a more professional answer for me?

12-05-2007, 08:39 PM	#8 (permalink)
killam All Join Date: Dec 2007 Location: NH Posts: 6 Thanks: 2 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	The reason i asked is cause know that most older rx7s with drum brakes did Not. So i was curious if there was something like that i could look for.

12-06-2007, 12:06 PM	#9 (permalink)
killam All Join Date: Dec 2007 Location: NH Posts: 6 Thanks: 2 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	what would it take to upgrade to LSD? Can i just replace the 3rd member from a 93+ or do you have to swap the the whole thing axles and all?

12-07-2007, 04:15 AM	#10 (permalink)
Mista 2 Cage Fighter Join Date: Nov 2006 Location: Adelaide, Australia Posts: 461 Thanks: 16 Thanked 21 Times in 21 Posts My Google Map iTrader Rating: (0/0% )	Did/do all mk1 sc cars have factory lsd ? this might help, i know it doesnt give too much info though. you could upgrade to an sc box and other parts required (not too sure of everything you will need though).

12-07-2007, 10:11 AM	#11 (permalink)
killam All Join Date: Dec 2007 Location: NH Posts: 6 Thanks: 2 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	Im surprised at the lack of info on this subject.

12-07-2007, 11:31 AM	#12 (permalink)
E T Haggis I Like Rusty Spoons Join Date: Nov 2007 Location: Deland Posts: 585 Thanks: 61 Thanked 8 Times in 8 Posts iTrader Rating: (0/0% )	im sure someone knows about this but they just havent come across the thread yet ive read taht a good wat to test if your car has LSD is to jack up the rear tires so that they are off of the ground and spin them while the car is in neutral if both tires spin then you have LSD

01-19-2008, 08:25 PM	#14 (permalink)
Angus some skills Join Date: Oct 2007 Location: New Zealand Posts: 89 Thanks: 10 Thanked 5 Times in 4 Posts iTrader Rating: (0/0% )	I have an ex Japan 1986 SC and it has LSD,and I believe it was factory fitted here in NZ everybody fights over any LSD boxes that come up for sale

02-18-2008, 11:32 PM	#16 (permalink)
Kotaro10v2 Some Skills Join Date: May 2007 Posts: 53 Thanks: 0 Thanked 2 Times in 2 Posts iTrader Rating: (0/0% )	actuly my car has an LSD and it is an AW11 88 the best way to find out if you have an LSD is drive on ICE I fund that this winter I was traing to have some fun wan I notes that I will aways give all the Power to the tire that haved the moset traction. if you tray to lift up your car the turn the weels it will act like an open dif. well I thik that what I is a VLSD + if you have the C52 trani you my have an LSD but if you have the C50 gust get rib of it. the C52 trani very simelar to the 4A-GZ. PS VLSD.s need constent care

02-20-2008, 10:48 AM	#17 (permalink)
LSG2007 My Muffler Fell Off Join Date: Feb 2008 Location: Olathe,KS Posts: 196 Thanks: 22 Thanked 8 Times in 4 Posts iTrader Rating: (0/0% )	yeah i was gonna say that mazda and toyota are a completely different breed...

02-20-2008, 10:53 AM	#18 (permalink)
jazzcornet Gi_Shu_Som Powdercoating Join Date: Nov 2006 Location: newport news, va Posts: 1,683 Thanks: 19 Thanked 60 Times in 50 Posts My Google Map iTrader Rating: (15/100% )	LSD doesnt mean that both wheels spin all the time. that would be more of posi-trac or a locked differential. limited slip means just that, limited slip in the outer turn wheel.

02-20-2008, 11:58 AM	#19 (permalink)
mr2gq Banned Join Date: Nov 2007 Posts: 447 Thanks: 0 Thanked 2 Times in 2 Posts iTrader Rating: (1/100% )	Limited slip only kicks in when the tires break loose. So if you kick it and it leaves 2 black marks you know for sure its got it. If only 1 then negative

02-20-2008, 12:31 PM	#20 (permalink)
fosley Some Skills Join Date: Aug 2007 Location: Tucson, AZ Posts: 91 Thanks: 0 Thanked 7 Times in 7 Posts iTrader Rating: (1/100% )	Well, not true. Our cars are balanced pretty well, so you can sometimes leave 2 black marks without LSD. If you only leave 1 black mark, you don't have LSD, but if you leave 2, you may still not have it. I know you can usually tell the difference if you try to do doughnuts; LSD will do tight circles with the front end moving around a tighter circle than the back, while open diff will do wide circles with the front and rear moving at about the same distance from the center (ie, no LSD=no doughnut). This seems to only work on surfaces with good traction like asphalt though, since an open diff will do doughnuts on dirt just fine.