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General Car Related Discussion.To discuss anything that is related to cars and automotive technology that doesnt naturally fit into another forum catagory.
Any ideas what is the best diff to use which can cope with 500bhp and 500lb/ft ?
Steve
I tried a quaife ATB its on its limit at that but if you dont launch should be OK.
The jaguar 10.5" is the real solution they can be picked up for £100 & then a £400 rebuild, fitted in 1999 its had zero maintenance.
Titan seems to be the way forward for 7.5", but I expect you're too tight. Have you blown your diff? You will always be risking it with the standard CWP and launches
a std diff will nearly always blow the planet gears before stripping CWP but then an uprated diff will strip the CWP instead (which is harder to do but not impossible)
ask jb fletch which ones he's using as he's always stripping the pinion teeth on his diffs
well, he was but no one did an uprated part for that, so i'd be going with the suggestion of a totally different diff without these issues to begin with
I do agree with dojj, the best way is to fit a different diff altogether, although it maybe costly the first time you do it, but it will also be the last time you do it.
I have a Jag 10.5" in my saff, yes it's quite expensive to get it in there, but you will NEVER break it with cossie power, in the long run it works out cheaper, and you get a 6 degree rear beam at the same time.
Well I've been told in mine with 500hp and 500lb/ft it will do the CWP within the first few goes
Rod, don't you need custom beam and shafts for the Jag diff?
Zoo Motorsport modified a beam kit & supplied shafts, however ive had to get special shafts made to cope with 660ft-lb since. Its like all things a solution you can fit/forget is worth a few extra bob & a lot less stress. JB has spent more on standard diffs at £50 a pop than my whole rear end conversion which is bullet proof. Think beam was £1700 fitted with shafts + diff £450 so around 2.2k, up to 600ft-lb its fit/forget.
I tried a quaife ATB its on its limit at that but if you dont launch should be OK.
The jaguar 10.5" is the real solution they can be picked up for £100 & then a £400 rebuild, fitted in 1999 its had zero maintenance.
I think there's your answer Steve, and at those costs Rod's quoted must be a win win.
I had the Quaife ATB in my saff if you remember, that did shit itself after the guy bought the car off me and that wasn't near your torque at all.
Again, depends how much mechanical sypmpothy you have i guess
Zoo Motorsport modified a beam kit & supplied shafts, however ive had to get special shafts made to cope with 660ft-lb since. Its like all things a solution you can fit/forget is worth a few extra bob & a lot less stress. JB has spent more on standard diffs at £50 a pop than my whole rear end conversion which is bullet proof. Think beam was £1700 fitted with shafts + diff £450 so around 2.2k, up to 600ft-lb its fit/forget.
you could have told him to sit down first, you are going to give the man a heart attack rod quoting those sorts of prices
you could have told him to sit down first, you are going to give the man a heart attack rod quoting those sorts of prices
Not really Dojj, you are looking at £1000 for a good 7.5" diff anyway, plus fitting etc, if you smash ONE diff, you are looking at £600+ to fix it again, do it once do it right
i have 500bhp and same ish torque and have a gripper diff but i did strip all the teeth off my c w and pinion leaving a round about in second lol so now have a shot peened and super finished one done by my mates dad who works for hewland engineering the diff only cost 700 pounds so cheap and strong also locks both wheels with out fail
Not really Dojj, you are looking at £1000 for a good 7.5" diff anyway, plus fitting etc, if you smash ONE diff, you are looking at £600+ to fix it again, do it once do it right
but steve's as tight as some indians i know who squeeze pennies so tight the queen screams
Rod/Will, can you please post Or PM me all details on your setup i.e. where to get the bits done like shafts, which diff, who to rebuild it, etc. I'm looking at rear diffs and the Titan is £1500 fitted into my case, so for another £700 may as well go Jag diff
Not really Dojj, you are looking at £1000 for a good 7.5" diff anyway, plus fitting etc, if you smash ONE diff, you are looking at £600+ to fix it again, do it once do it right
If you break a quaife or gripper equipped diff you only have to change the cwp you can get a blown STD 7.5 diff for £100 Ish then swap the diff unit over as the unit doesnt break.
Rebuilding a gripper unit is cheap they need doing once a year depending on use.
a std diff will nearly always blow the planet gears before stripping CWP but then an uprated diff will strip the CWP instead (which is harder to do but not impossible)
This is the problem I have with my ATB. Behaves impecably once on the move, but spits out the teeth of the crown wheel if launched with decent grip.
a pop than my whole rear end conversion which is bullet proof. Think beam was £1700 fitted with shafts + diff £450 so around 2.2k, up to 600ft-lb its fit/forget.
which i would love to do