Gripper lsd

Marc87 · Aug 19th, 2018, 08:24

Has anyone on here run a gripper lsd in their 7/940?? Interested to know if it is any good and how you retained the Speedo??

Laird Scooby · Aug 19th, 2018, 13:49

Two things you can't change when fitting an LSD are the relative positions of the pinion and crownwheel. As the speedo picks up its signal from the crownwheel (as far as i'm aware) then there shouldn't be a problem with the speedo.

martin_r_smith · Aug 19th, 2018, 14:39

Speedo works off a ring gear on the other end off the diff to the crown wheel.

Laird Scooby · Aug 19th, 2018, 14:47

Thanks for that - i've never needed to delve into the diff so was going on memory from the diagrams in the Haynes manuals, last looked at um years ago!

I'd take a guess the replacement diff is designed to fit with the original halfshafts and casing and also the reluctor ring/ring gear/whatever you like to call it so i don't see why it should be a problem.

I've heard the Trac-Loc diffs from early Jeep Cherokees are a fairly easy swap as well, seeing as they also use the Dana 40/41 diffs, same as Volvo. Might be another option.

bob12 · Aug 19th, 2018, 20:17

Why don't you ask them direct about the speedo take off? They seem to have a very user friendly website when I looked shortly after your initial post - Bob

Skylaneguy · Sep 3rd, 2018, 20:41

You must retain the tone ring for the speedometer to work. Early 740s used a 12 count tone ring, 1987-88 (with ABS) used a 96 count tone ring, and 1989+ used a 48 count tone ring. An interesting article from turbobricks, http://forums.turbobricks.com/showthread.php?t=189043

wade180sx · Sep 7th, 2018, 19:16

I have just fitted a True trac to my 1031 axle so i can give you a list of things you will need when changing the diff if needed
Have to say it's a good lsd and cost me 530.00 shipped to the UK

deeman940 · Sep 12th, 2018, 13:37

I have a Gripper....it's the bollocks. Gripper paid for my diff to be sent back along with my speedo gear which they machined to fit at no cost at all. Most of their customers are motorsport based but I imagine they will be doing loads more road cars now. John at Gripper is REAL helpful...he has the measurements on file now.

Aug 19th, 2018, 08:24	#1
Marc87 Junior Member Last Online: Apr 17th, 2024 23:20 Join Date: Sep 2016 Location: Basingstoke	Gripper lsd Has anyone on here run a gripper lsd in their 7/940?? Interested to know if it is any good and how you retained the Speedo??

Aug 19th, 2018, 13:49	#2
Laird Scooby Premier Member Last Online: Today 17:37 Join Date: May 2012 Location: Lakenheath	Two things you can't change when fitting an LSD are the relative positions of the pinion and crownwheel. As the speedo picks up its signal from the crownwheel (as far as i'm aware) then there shouldn't be a problem with the speedo. __________________ Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........

Aug 19th, 2018, 14:39	#3
martin_r_smith Premier Member Last Online: May 10th, 2022 21:01 Join Date: May 2009 Location: Wiltshire	Speedo works off a ring gear on the other end off the diff to the crown wheel. __________________ 1983 244

Aug 19th, 2018, 14:47	#4
Laird Scooby Premier Member Last Online: Today 17:37 Join Date: May 2012 Location: Lakenheath	Thanks for that - i've never needed to delve into the diff so was going on memory from the diagrams in the Haynes manuals, last looked at um years ago! I'd take a guess the replacement diff is designed to fit with the original halfshafts and casing and also the reluctor ring/ring gear/whatever you like to call it so i don't see why it should be a problem. I've heard the Trac-Loc diffs from early Jeep Cherokees are a fairly easy swap as well, seeing as they also use the Dana 40/41 diffs, same as Volvo. Might be another option. __________________ Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........

Aug 19th, 2018, 20:17	#5
bob12 bob12 Last Online: Today 11:19 Join Date: Aug 2006 Location: Woking	Why don't you ask them direct about the speedo take off? They seem to have a very user friendly website when I looked shortly after your initial post - Bob Last edited by bob12; Aug 19th, 2018 at 21:25.

Sep 3rd, 2018, 20:41	#6
Skylaneguy Member Last Online: Jan 27th, 2022 22:18 Join Date: Dec 2010 Location: Vancouver	You must retain the tone ring for the speedometer to work. Early 740s used a 12 count tone ring, 1987-88 (with ABS) used a 96 count tone ring, and 1989+ used a 48 count tone ring. An interesting article from turbobricks, http://forums.turbobricks.com/showthread.php?t=189043

Sep 7th, 2018, 19:16	#7
wade180sx Junior Member Last Online: Nov 29th, 2021 20:08 Join Date: May 2018 Location: Aylesbury	I have just fitted a True trac to my 1031 axle so i can give you a list of things you will need when changing the diff if needed Have to say it's a good lsd and cost me 530.00 shipped to the UK

Sep 12th, 2018, 13:37	#8
deeman940 Master Member Last Online: Apr 4th, 2024 17:58 Join Date: Oct 2015 Location: watford	I have a Gripper....it's the bollocks. Gripper paid for my diff to be sent back along with my speedo gear which they machined to fit at no cost at all. Most of their customers are motorsport based but I imagine they will be doing loads more road cars now. John at Gripper is REAL helpful...he has the measurements on file now.

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