jpayne
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Re: Mk1 rear end options
2014/07/04 10:14:22
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I should add I believe they are good for about 350HP before they become troublesome. I haven't worried them yet!. JP
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sundowner
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Re: Mk1 rear end options
2014/07/04 10:22:45
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VOTE 1 BORGIE borg warner diff in mine is the best thing ion the car go the borgie...
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HighRevs
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Re: Mk1 rear end options
2014/07/05 19:15:51
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Sundowner do you notice much difference in the weight? What was it originally from? I've got some weight figures after searching for awhile BW78: 64kg with brakes minus oil Hilux: somewhere between 62-80kg (62 seems to be weight minus brakes and oil, 80 is with brakes and LSD centre but no oil, I assume this is possibly a 6 stud long axle although it is not mentioned) English: 45kg with brakes, oil and 4 link mounts Atlas: 48kg with oil but no brakes Since sorted from forums throughout the net (mainly from lotus and rotary sites) I'd take each of those weights with a large dash of salt. People say that the hilux is easier to lift and carry around but anyone that has posted up weights has had them weigh around the same as the BW. I'm most surprised at the good 15kg of unsprung weight between even the lightest hilux and the heaviest english. All that extra unsprung weight has scared me a bit, especially as I'd go up to 15"s with the BW to clear the brakes, adding even more weight. Has anyone broken a beefed up english? Trent
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martymexico
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Re: Mk1 rear end options
2014/07/06 22:25:38
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My van is going to be pushing around 220bhp from my zetec and am over the comfortable power range of the English axle even with lsd, it'll be axles that snap which I'm not liking. I was 'given' a hilux diff with a TruTrac lsd for making some fglass components ...I'm not sure of the ratio yet but it'll require cutting down some 80mm . If I didn't acquire this diff I would have chosen a Borgie simply cause they are common and literally unbreakable. ie my neighbor used to have a '76 falcon GXL wagon (factory bw lsd) , he installed a 460ci v8 and for 2yrs of driving like a loon the diff was just starting to make a faint howling noise, they won my vote for being tough as..
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evobda2
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Re: Mk1 rear end options
2014/07/07 00:02:40
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You cutting down the existing hilux axles Marty or replacing with new shorter ones e.g. eurospeed?
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wayovermyhead
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Re: Mk1 rear end options
2014/07/07 08:34:22
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☄ Helpfulby evobda2 2014/07/07 08:41:55
I have a pretty grunty NA Pinto in my race car (power output as arbitrary as the numbers people seem to throw around as "limits" of an English so I won't include them here, but it has big capacity and is race fuel only). It has an English axle and has not broken yet, and it didn't break for the previous owner either. I have done a lot of sifting through forums and see a lot of opinions like those reflected in this thread. Which are, an English is weak and must be replaced. It has seemed to me that for every 7 people that are replacing their English axle only has actually had any first hand failure with one, and the discussion or exercise of thought surrounding everyone elses response doesn't tend to include consideration for the variables of circumstance and driving style, i.e big slicks and dumping clutches. not to mention people often have unrealistic ideas of how much power their car has thereby lowering even further the true expectation of the English for their application. There are also numerous anecdotes of people doing plenty of burnouts and hard hill climb starts with English axles that haven't broken yet, but these are not as relevant when the tendency to want to naturally improve and make stronger is prevalent anyway. So by no means is my point to say an English is for everyone, if you are a bogan who cannot go for a drive without doing a burnout in your clapped out 30yr old diff or you have any sort of forced induction, you need not apply. I'm only on this bandwagon because I have reached the conclusion that many people choose to add 40kgs to their car due to misconceptions and fear. So I would like to ask the question here, as it is a good opportunity to do so. Has anyone here broken a English diff first hand? and can you say that it was in good nick as well? And that's not a rhetorical question, please jump in everyone. I'm just as keen to be proven wrong as keep believing all I wrote above, but simply trying to stimulate the discussion out of interest.
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troppo
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Re: Mk1 rear end options
2014/07/07 09:58:22
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Great post wayovermyhead, i was looking at the hilux option because i had heard of the english diffs breaking, but when i thought about it i realised it was always a friend of a friend or "the hilux has thicker axles" so i guess i was working on the rumor principle. I only know of one english breaking first hand and that was behind a wild turbo`d commodore v6 doing a burnout in a comp
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RSman4ever
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Re: Mk1 rear end options
2014/07/07 10:09:09
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Ive busted 3 or 4 English diffs in escorts and seen a LOT of others that my mates have had go bang. Twenty years ago in NZ replacements where pretty easy and cheap to come by.Doesn't matter how much power you put through them its more about how you treat it,in my opinion. Even Xflows Can bust diffs
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RS 2000
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Re: Mk1 rear end options
2014/07/07 10:15:37
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Really, haven't broken an English first hand???I have personally broken 12 between 2 escorts both stockish pintos with around 60-75rear wheel kw(so very mild). Mostly broken when launching the car, 2 or 3 broken on a 1-2 gear change. cheers
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RS 2000
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Re: Mk1 rear end options
2014/07/07 10:15:37
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double post - I always wondered how people manage these double posts, now I know lol
post edited by RS 2000 - 2014/07/07 10:20:11
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troppo
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Re: Mk1 rear end options
2014/07/07 10:59:30
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OK so maybe i will go with the hilux/hi-ace diff then, i`m looking at doing rally and hillclimb as well as a bit of a driver. Dont want to blow diffs so bulletproof jap item it is
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RSman4ever
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Re: Mk1 rear end options
2014/07/07 11:10:11
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Its usually the spider gears that shatter, I'm sure there are plenty of people who have smashed the spiders and welded them up as a quick fix, this makes English diffs pretty strong, although it just transfers the stress to the axles, not to mention the fact that they are a little dangerous in the wet on public roads.
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jpayne
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Re: Mk1 rear end options
2014/07/07 13:35:31
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I have twisted a number of axles with hard launches and semi sticky tyres in an english. I found the hilux a much cheaper option for strength than ugrading the english to similar power capability. JP
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sundowner
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Re: Mk1 rear end options
2014/07/07 13:37:24
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no i never never weighed it before and after as im not that fussed. The diff is just bullet proof, as a few forum members that have been in the car will testify, funny though i did weigh the car today and it came in 980 kg with 3/4 of a tank of juice. The diff is definitely heavier, but so is the turbo and all the manifold and plumbing.
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mud
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Re: Mk1 rear end options
2014/07/07 14:09:04
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Had BW78 in my rally car since the late 90's after I broke a couple of axles on the original English. Basically indestructible in an Escort I reckon.
Tar's for getting there. Dirt's for racing!
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