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Apr 15, 2016 10:36:48 GMT
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Hi guys I have a Humber sceptre mk3 V8 3.5 with the p6 3.5s gearbox I think the gearbox ratio is 3.4 but it's connected to the original humber axle which is coping fine but the only thing is my diff is a 3.9 so it's so love geared that a don't use first gear I have a differential from a hillman hunter gls 3.7 ratio I was wondering if the diff would fit into my axle without any problems and my half shafts would fit Not sure if I would need the gls half shafts Any help would be appreciated Regards Dave
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Apr 15, 2016 21:02:07 GMT
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From memory* if the shafts have the same number of splines they are swapable ( some have few large splines, others have more splines but less chunky) * don't trust my memory - I don't !Suggest you PM Hillmanjames and andygb as they have both been inside these axles Don't forget to post up any useful info to help other Hunter folk in the future
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Apr 16, 2016 11:32:12 GMT
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Going up from a 3.9 to a 3.7 will slightly improve things, but not by much. Trouble is, what the RV8 lacks in power it makes up for in low down torque, hence making your 1st gear pretty much redundant. A 3.9 diff is way too low for the RV8, ideally you need a much taller final drive. Something around 3 to 3.2:1 would be much more suitable. Wasn't there a diesel version of the Hunter, dunno what diff that had? I can only see you have two other options. Firstly you could fit a 5 speed RV8 gearbox. However these are expensive and you'll still have a 1st gear that is useless. Secondly you could modify and fit a V6 Capri axle, IIRC some of these are 3.04:1? However, these are heavier, would need narrowing, the spring seats moving and so on. Good luck Dave.
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Apr 16, 2016 12:23:04 GMT
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Thanks nomad I've sent james a pm
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Apr 16, 2016 12:27:55 GMT
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Thanks for that my plan was to fit the 3.7 diff and see how that goes and then get a set of escort mk2 minilites 15x8s along with the diff it my remedy it the long term plan is to get a diff made with the right ratios and a lim slip made by gripper diffs Regards Dave
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Apr 16, 2016 18:49:54 GMT
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Fit a Ford axle? Go up a couple of sizes on tyres/rims ( I run 80 profiles on the rear to drop the revs on long drives, have also used 14" (Escort III) rims with no rubbing problems
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Apr 18, 2016 10:05:03 GMT
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Fit a Ford axle? Go up a couple of sizes on tyres/rims ( I run 80 profiles on the rear to drop the revs on long drives, have also used 14" (Escort III) rims with no rubbing problems Yeah I'm thinking about that in the long term but I've heard that the hillman diffs are bullet proof my cars doing 140 at the wheels so far I'm a believer in if it's not broke don't fix it and the easy way is the 14s and 15s ford wheels I just thought while I've got the 3.7 gls diff sitting around I might as well fit it if it's marries my stock half shares . I will give speedy a ring and ask if the gls shafts are the same has a humber sceptre mk3 shafts I will let you know how I get on Cheers dave
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Seth
South East
MorrisOxford TriumphMirald HillmanMinx BorgwardIsabellaCombi
Posts: 15,508
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Apr 18, 2016 11:54:53 GMT
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I've just been looking in my Rootes parts list that covers the range of cars though doesn't specifically mention the GLS/H120.
A 3.7 diff was available in cars other than just the H120/GLS either abroad or in this country for ordinary Hunters/Sceptres that were fitted with automatic gearboxes. There is only one part number listed for half shafts so these must fit all the diffs.
I also have a thick Hunter Range manual that does talk about the Holbay equipped cars, mentions the larger clutch they had but makes no mention of back axle differences. So I would be 99% sure that the rear axles are all the same.
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Follow your dreams or you might as well be a vegetable.
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Apr 19, 2016 19:42:07 GMT
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I've just been looking in my Rootes parts list that covers the range of cars though doesn't specifically mention the GLS/H120. A 3.7 diff was available in cars other than just the H120/GLS either abroad or in this country for ordinary Hunters/Sceptres that were fitted with automatic gearboxes. There is only one part number listed for half shafts so these must fit all the diffs. I also have a thick Hunter Range manual that does talk about the Holbay equipped cars, mentions the larger clutch they had but makes no mention of back axle differences. So I would be 99% sure that the rear axles are all the same. Hi set yes your 100% right I rung up speedy spares and they said all the half shafts are the same splines good result thanks for taking time to reply I will let you know how I get on its booked in next Friday to have the gls diff fitted and escort mk2 leaf springs fitted
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Apr 29, 2016 16:47:19 GMT
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I've just been looking in my Rootes parts list that covers the range of cars though doesn't specifically mention the GLS/H120. A 3.7 diff was available in cars other than just the H120/GLS either abroad or in this country for ordinary Hunters/Sceptres that were fitted with automatic gearboxes. There is only one part number listed for half shafts so these must fit all the diffs. I also have a thick Hunter Range manual that does talk about the Holbay equipped cars, mentions the larger clutch they had but makes no mention of back axle differences. So I would be 99% sure that the rear axles are all the same. Hi set yes your 100% right I rung up speedy spares and they said all the half shafts are the same splines good result thanks for taking time to reply I will let you know how I get on its booked in next Friday to have the gls diff fitted and escort mk2 leaf springs fitted Hi just to update all changed the diff today but turns out the diff I got from a guy on ebay up in Blackburn who said it was a hunter gls diff lied it's the same has my old diff and has a whine on so I will have to swap it back and the mk2 escort springs won't fit they are way to small so I've ordered a pair of uprated from Owen springs and just contacted gripper diffs to see how much it will cost to have one made ... but short term plan it to buy a pair of 15 inch minilites to go on the rear to see how that alters the ratio
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Apr 29, 2016 18:09:37 GMT
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Thanks for posting the update - it's always useful to know what works (as well as what doesn't) ...the mk2 escort springs won't fit they are way to small ... Do you know what was too small (length, width, errm... ) Mk3 (and later) van springs are wider but do fit, their length is about right (maybe a fraction longer than Hunter) I'm guessing here but - your Escort mk2 springs are smaller than mk3 & later (I know mk2 are 50mm wide but mk3 van are 60mm) ? saloon is smaller than van? what you have isn't escort?? Hope you get it sorted!
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Apr 30, 2016 17:56:40 GMT
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Thanks for posting the update - it's always useful to know what works (as well as what doesn't) ...the mk2 escort springs won't fit they are way to small ... Do you know what was too small (length, width, errm... ) Mk3 (and later) van springs are wider but do fit, their length is about right (maybe a fraction longer than Hunter) I'm guessing here but - your Escort mk2 springs are smaller than mk3 & later (I know mk2 are 50mm wide but mk3 van are 60mm) ? saloon is smaller than van? what you have isn't escort?? Hope you get it sorted! Thanks nomad the Hunter spring is 1250mm X 50 mm and the escort is 1100 mm X 60 I'd cut the ends to 50mm but the escorts wouldn't have worked because the centresame are different where they marry up to the axle .... so I'm waiting for a place called Owen springs to give me a price to make me a pair with an extra leaf for siffness
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Apr 30, 2016 18:51:14 GMT
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Thanks again nomad got a price from Owen springs for a uprated set (4 leafs) 380 all in so I will go down that route less hassle and in the process of ordering a pair of 15x8 mini lites to go on the rears so that may help sort my ratios out I will let you know how I get on Regards Daventry
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Jun 28, 2016 19:58:02 GMT
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Well uptake time So had my new leaf springs fitted which went ok I had to make all the bushes out of acetal marine nylon but I've got a knocking noise from one of my dampers so I will get a new pair and I will need to fit a lowering kit because it sits way to high because my uprated leafs don't budge much Cheers dave
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