tigran
Club Retro Rides Member
In rust we trust. Amen.
Posts: 6,444
Club RR Member Number: 142
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Triumph TR7 axle.tigran
@tigran
Club Retro Rides Member 142
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May 26, 2012 18:14:09 GMT
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Hey guys. Need to pick someone's brains.
The Judge is running a TR7 rear axle. I am absolutely fed up with the mentally low gearing of the axle. It sits at around 3500rpm at 65. So i need to seek out a more suitable rear axle. It needs to be a live rear axle, and how strong/weak it is isn't of the greatest of issues for me as i'm going to weld it up anyway.
Any suggestions?
I'm more interested in what's long geared as opposed to anything else.
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1964 Rover P5 i6
1987 BMW 525e - The Rusty Streak
1992 Micra K10
2001 BMW E46 316i
2002 BMW E46 330Ci
2013 BMW F31 320d
2018 BMW G31 530d
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May 26, 2012 21:57:14 GMT
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Which TR7 axle?
There are two (at least).
Early 4 speed 7s used a Dolomite axle. I think manuals were 3.63:1 and autos 3.27:1. It's a weedy axle. 2.0L the limit.
5 speed TR7s used a much beefier unit similar to those used in SD1 Rovers (and Dolly Sprint).
3.9:1 ratio on the manuals as standard. TR8s had 3.08:1 as also used on SD1 3500. 3.45:1 also exists from Sprint and smaller engined SD1s.
Either way you can probably stick with the same basic axle, just swap the ratio?
Nick
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1967 Triumph Vitesse convertible (old friend)
1996 Audi A6 2.5 TDI Avant (still durability testing)
1972 GT6 Mk3 (Restored after loong rest & getting the hang of being a car again)
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tigran
Club Retro Rides Member
In rust we trust. Amen.
Posts: 6,444
Club RR Member Number: 142
|
Triumph TR7 axle.tigran
@tigran
Club Retro Rides Member 142
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May 26, 2012 22:43:50 GMT
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Yeah that's what i was pondering, to get a SD1 3500 diff, the lower the better.
Thanks a lot for the help.
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1964 Rover P5 i6
1987 BMW 525e - The Rusty Streak
1992 Micra K10
2001 BMW E46 316i
2002 BMW E46 330Ci
2013 BMW F31 320d
2018 BMW G31 530d
|
|
tigran
Club Retro Rides Member
In rust we trust. Amen.
Posts: 6,444
Club RR Member Number: 142
|
Triumph TR7 axle.tigran
@tigran
Club Retro Rides Member 142
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May 26, 2012 22:47:48 GMT
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Just had a look, christ alive are they thin on the ground!
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1964 Rover P5 i6
1987 BMW 525e - The Rusty Streak
1992 Micra K10
2001 BMW E46 316i
2002 BMW E46 330Ci
2013 BMW F31 320d
2018 BMW G31 530d
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Rimmer bros stock the CROWNwheel and pinions, 3.45 is £175 (or weirdly you can buy a kit (# ro1168) for £150 which comes with one :  the 3.08 is £500  |
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1977 datsun 810 180b estate |
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tigran
Club Retro Rides Member
In rust we trust. Amen.
Posts: 6,444
Club RR Member Number: 142
|
Triumph TR7 axle.tigran
@tigran
Club Retro Rides Member 142
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May 27, 2012 10:12:01 GMT
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Yeah the ones i want are mental money, don't even look at their 2.84 offering, also deffo don't look at the £120 surcharge!
Two words, one begins with F and one begins with T
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1964 Rover P5 i6
1987 BMW 525e - The Rusty Streak
1992 Micra K10
2001 BMW E46 316i
2002 BMW E46 330Ci
2013 BMW F31 320d
2018 BMW G31 530d
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v8ian
Posted a lot
Posts: 3,832
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May 27, 2012 12:33:29 GMT
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Taller tires??
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Atmo V8 Power . No slicks , No gas + No bits missing . Doing it in style.
Austin A35van, very different------- but still doing it in style, going to be a funmoble
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May 27, 2012 15:35:01 GMT
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Rover P6 3500 diffs might have same internals? I know they are 3.08:1......
Nick
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1967 Triumph Vitesse convertible (old friend)
1996 Audi A6 2.5 TDI Avant (still durability testing)
1972 GT6 Mk3 (Restored after loong rest & getting the hang of being a car again)
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the 3.08 is £500 
