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Joined: Nov 2018
Posts: 6,057 Likes: 160
Talk Morgan Sage
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Talk Morgan Sage
Joined: Nov 2018
Posts: 6,057 Likes: 160 |
6 leaves which is how it came from the factory. Having discussions now about other options. I'll keep you all posted. I went for 'four leaf' for mine - that may explain the problem with length?
1972 4/4 4 seater, 1981 MGB GT 1984 Harley Davidson Electra Glide, 1990 Kawasaki ZX10
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Joined: Jun 2019
Posts: 767 Likes: 45
Talk Morgan Regular
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OP
Talk Morgan Regular
Joined: Jun 2019
Posts: 767 Likes: 45 |
Yes. I may change to a 5 leaf. Still discussing that. But will still need a longer U-bolt. The other choice may be one for a 7 leaf, and I'll cut it down. We'll see.
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Joined: May 2015
Posts: 110
L - Learner Plates On
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L - Learner Plates On
Joined: May 2015
Posts: 110 |
The Salisbury 7HA axle has a tube diameter of 2.25”. Original factory U bolts to my 1972 +8 with 6 leaf springs have a measured internal dimension of 5.25” they are from ⅜ stock with a BSF thread. Later MMC dealer supplier U bolts in my possession are 5.375” in length but came with SAE UNF threads.
MGB ‘banjo’ axles 1963-1967 also have a tube diameter of 2.25”. Replacement U bolts supplied by the “MGB Hive Ltd” have an internal dimension of 6”, they fit with MMC bottom plates, are from ⅜ stock with SAE UNF threads. BMC part no AHH6452 and are £16.25 for 4 including delivery. A number of MG suppliers offer lowering kits for the banjo axle and/or long U bolts. The lowering kits are advertised at +1”. Again courtesy of eBay the price is about £35 delivered.
If you want heavier duty U bolts, Mulfab sell a set, these are from 7/16” stock and will need matching bottom plates. The internal dimension of these is 7.5”. I believe Mulfab supply matching heavy duty Rutherford bottom plates as well as HD U bolts with ears for lever shocks.
If you go with MGB parts, be aware that it is only the Banjo axle that will interchange, the ‘tube’ axle fitted MGG GTs and later roadsters has a larger axle diameter of 2.5”. The axles (English & Atlas) fitted to Fords are also 2.5” so will not fit. Going the other way A series engined BMC cars (M1000, AH Sprites, Midgets) are I believe 1.875” in diameter.
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