X305 diff ratio
#2
Join Date: Mar 2008
Location: Pacific Northwest USA
Posts: 24,932
Received 10,990 Likes
on
7,217 Posts
#4
I have seen VDPs with the LSD. I don't know if any or all V12 cars were fitted.
Sometimes the cars get a replacement and a different diff gets installed.
I have a limited slip in my 1992 XJ40 but I installed it myself.
Look on the tag on the diff and it should be a red/yellow for 3.58.
If it has a BLACK 'X' through it it IS the LSD version.
bob gauff
Sometimes the cars get a replacement and a different diff gets installed.
I have a limited slip in my 1992 XJ40 but I installed it myself.
Look on the tag on the diff and it should be a red/yellow for 3.58.
If it has a BLACK 'X' through it it IS the LSD version.
bob gauff
The following users liked this post:
olivermarks (09-18-2023)
#5
The following 2 users liked this post by 944play:
olivermarks (09-18-2023),
watto700 (09-18-2023)
#6
I've seen that spec too John, don't let it get to you! It is a small difference. I wonder which one is correct? Someone with a diff in their hands would be able to find out. At any rate, the XJ12 should have been built with the 3.27 Powr-Lok. I'm pretty sure the older V12 drivetrains had LSDs or at least as an option.
I hate those stupid trade names that are made up of misspelled real words that is somehow supposed to describe their function.
I hate those stupid trade names that are made up of misspelled real words that is somehow supposed to describe their function.
The following users liked this post:
944play (09-18-2023)
#7
I'm certainly not fussed about a ~1% difference -- that gets dwarfed by just tire wear. I just want my (future) Cars&Coffee 'brag sheet' to be numerically factual.
That said, I have no idea whether the Solars I have actually came off a 2003. Mental note, look for datestamps next time they're off.
Trending Topics
#8
Join Date: Mar 2008
Location: Pacific Northwest USA
Posts: 24,932
Received 10,990 Likes
on
7,217 Posts
The Jaguar parts catalog for the X300 shows four available ratios, 4:09, 3:77, 3:58, and 3:27
Go to item #22 here:
https://parts.jaguarlandroverclassic.com/parts/index/part/id/922.1585.5727.24373/brand/jaguar/
The XJR/6 used the 3:27
The V12 used the 3:58 as did the 4.0 normally aspirated/automatic
The 4:09 and 3:77 were for 3.2 and 4.0 normally aspirated with manual transmissions, respectively
I have seen the "3:54" in some publications as well.
I'm reminded of a similar situation with the specs on the older Series III XJ6 diffs. The sales literature shows 3:07 as does some service literature. The parts catalog shows 3:058, 3:06, and 3:07 !
Cheers
DD
Go to item #22 here:
https://parts.jaguarlandroverclassic.com/parts/index/part/id/922.1585.5727.24373/brand/jaguar/
The XJR/6 used the 3:27
The V12 used the 3:58 as did the 4.0 normally aspirated/automatic
The 4:09 and 3:77 were for 3.2 and 4.0 normally aspirated with manual transmissions, respectively
I have seen the "3:54" in some publications as well.
I'm reminded of a similar situation with the specs on the older Series III XJ6 diffs. The sales literature shows 3:07 as does some service literature. The parts catalog shows 3:058, 3:06, and 3:07 !
Cheers
DD
Last edited by Doug; 09-18-2023 at 07:27 AM.
The following users liked this post:
944play (09-19-2023)
#9
Join Date: Mar 2008
Location: Pacific Northwest USA
Posts: 24,932
Received 10,990 Likes
on
7,217 Posts
#10
Thread
Thread Starter
Forum
Replies
Last Post
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)