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Topic: Need help with 7.5 inch diff, 4.27 ratio. (Read 649 times) |
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firefox
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Need help with 7.5 inch diff, 4.27 ratio.
« on: Nov 20th, 2011, 11:09am » |
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recently changed from a 3.9 ,7 inch to the 7.5. was using tripode shafts from an 1800 drum brake car with a disc conversion. now trying to fit disc brake shafts (lobro) with the disc hubs.. the problem lies in the output flanges from the diff, they are too short, so I am unable to put the snap rings on. Does the 7.5 use a longer shaft? and in your opinion is it nessesary to use the snap rings. the diff and shafts are installed in a Fulcrum sportscar!!!!!.
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Stixy
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Re: Need help with 7.5 inch diff, 4.27 ratio.
« Reply #1 on: Nov 20th, 2011, 11:30am » |
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The splines in the diff wont match the shaft properly , but if you fit the lobro joint onto the tripode shaft ( diff end only ) you shouldnt have a problem i know of a few Sierra's with this set up
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firefox
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Re: Need help with 7.5 inch diff, 4.27 ratio.
« Reply #2 on: Nov 21st, 2011, 11:17am » |
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I have the lobro shafts complete from end to end including the diff flange and hub end, plus the correct disc brake hubs, instead of drum with a conversion to disc. My problem is the fact that im using a 7.5 diff, and think the diff flange and stubs are from a 7inch diff, therefore not long enough in the spline to be able to put the C clip on, my question is: Are the 7.5 splines longer than the 7 splines? another point being the diameter of the flange, mine are 100mm, whereas the longer spline shafts could be 108mm.
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firefox
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Re: Need help with 7.5 inch diff, 4.27 ratio.
« Reply #3 on: Nov 21st, 2011, 8:42pm » |
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Now have the correct flanges, ill see how it goes now. 
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Highlander
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13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
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Re: Need help with 7.5 inch diff, 4.27 ratio.
« Reply #4 on: Nov 22nd, 2011, 10:46am » |
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Not sure on the lengths between the 7 and 7.5 pinions, I would have thought they'd be the same but maybe not.
The 100mm flanges on the 7.5 diffs are fitted to the DOHC models 2.0 2.3 and your 7 inch diff flanges should also be 100mm
The V6's and diesels with the 7.5 diff have 108mm flanges.
Let us know how you get on
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on Oct 17th, 2011, 12:35pm, Simmo wrote:I give up !  Too much for an old boy!  |
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