XJ12 Diff ratio change
#1
#2
3.31 to 3.54 is just a small jump I dont think it would be noticeable, especially on a v12.
Not easy to do. Not low cost to do right...the ring can modified but the pinion is different.
You need a the dana 44 to Jag flange and a diffrent seal
DANA SPICER 2-1-1881X companion flange fits all Dana 44 front or rear with 26 spline pinion
Here are some detailed diffrences
Jaguar salisbury/dana 44 gear swap conversion kits???? | The H.A.M.B.
Not easy to do. Not low cost to do right...the ring can modified but the pinion is different.
You need a the dana 44 to Jag flange and a diffrent seal
DANA SPICER 2-1-1881X companion flange fits all Dana 44 front or rear with 26 spline pinion
Here are some detailed diffrences
Jaguar salisbury/dana 44 gear swap conversion kits???? | The H.A.M.B.
Last edited by icsamerica; 04-09-2016 at 06:35 AM.
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ronbros (04-11-2016)
#3
3:54
johan,
I switched from a 3:31 to a 3:54. I shorten the route by buying a center section from Coventry West. Spoke with Dick Maury. "Shortened the route" is a misnomer, as I freshened everything else.
Ahead of the 3:54 is a 700R4. Makes a nice combination in my case. The 12 & T400 were good or 11 MPG. The new combination with a BBC gets 14 MPG if I keep my foot out of it.
At times, I wish I had went to the to a 3:90 - quicker in the city and the 1/8 mile.
I switched from a 3:31 to a 3:54. I shorten the route by buying a center section from Coventry West. Spoke with Dick Maury. "Shortened the route" is a misnomer, as I freshened everything else.
Ahead of the 3:54 is a 700R4. Makes a nice combination in my case. The 12 & T400 were good or 11 MPG. The new combination with a BBC gets 14 MPG if I keep my foot out of it.
At times, I wish I had went to the to a 3:90 - quicker in the city and the 1/8 mile.
The following users liked this post:
ronbros (04-12-2016)
#4
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johan,
I switched from a 3:31 to a 3:54. I shorten the route by buying a center section from Coventry West. Spoke with Dick Maury. "Shortened the route" is a misnomer, as I freshened everything else.
Ahead of the 3:54 is a 700R4. Makes a nice combination in my case. The 12 & T400 were good or 11 MPG. The new combination with a BBC gets 14 MPG if I keep my foot out of it.
At times, I wish I had went to the to a 3:90 - quicker in the city and the 1/8 mile.
I switched from a 3:31 to a 3:54. I shorten the route by buying a center section from Coventry West. Spoke with Dick Maury. "Shortened the route" is a misnomer, as I freshened everything else.
Ahead of the 3:54 is a 700R4. Makes a nice combination in my case. The 12 & T400 were good or 11 MPG. The new combination with a BBC gets 14 MPG if I keep my foot out of it.
At times, I wish I had went to the to a 3:90 - quicker in the city and the 1/8 mile.
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tdyer
XJ6 & XJ12 Series I, II & III
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04-08-2016 07:09 AM
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