Independent Rear Suspension, OEM, aftermarket, stock configuration or heavily modified, all makes and models, everyone is welcome here!!!

You are not logged in. Would you like to login?

Independent Rear Suspension Forum » how much power can a Jag diff take? » 12/12/2013 7:10 am

well in light of all this reading and proof, its only a matter of time untill mine blows up and sends me into another car.
im going to ditch my IRS and go ford 9" im thinking. ill save the IRS thing for another car thats more tame.

Independent Rear Suspension Forum » how much power can a Jag diff take? » 12/07/2013 5:30 pm

haha! ya, it gets some looks! and it has scared its share of ladies on the road. and if you follow me too close your going to eat coal for dinner for a few miles.
i have considerd how bad it would be if i broke an axle or somthing at speed. before its back on the road im going to build an upper controll arm type of fail safe brace. this way if somthing breaks the wheel dosnt just flop over like a dead fish and send me to my death.
the saving grace of this rig is that it will never ever hook up, and in the 2 years since i finished the car, ive been too scared to push it past 3/4 throttle. its seen 3/4 throttle twise for about a split second each time and otherwise only ever sees half throttle once in awhile. both times over 1/2 throttle was just to see what it would do, and it has so much more to give at those speeds that i shut it down right away. last summer i left a new laborghini in the dust from a 75mph highway roll with half throttle.... so you can see im scared of pushing it harder, i have a family.

Independent Rear Suspension Forum » how much power can a Jag diff take? » 12/07/2013 12:58 pm

while i have it apart i need to do the stub axle seals. what is a good affordable place to get a set of these? ive seen them from $40 a piece to $13 a piece. i would have assumed i could find them for $5 or so considering there just simple seals.
will E-type stub axles/seals be a difforent size than later axles/seals?

Independent Rear Suspension Forum » how much power can a Jag diff take? » 12/07/2013 9:03 am

the rear could probly use some shimming. ill take a look at that when i put it all back together.

Independent Rear Suspension Forum » how much power can a Jag diff take? » 12/06/2013 10:25 pm

when the stub axles have been pulled from the diff and the carier bearing caps are removed, should the center section simply pop out or do i need to pry on it a bit? i have it all ready to come apart but im having a hard time getting the guts out of the diff housing. just wondering if im missing somthing.

Independent Rear Suspension Forum » how much power can a Jag diff take? » 12/06/2013 6:32 pm

thanks guys.
the ring and pinion look totaly fine. the spider gears look like thay are getting some wear.
the car weighs 3100lbs. heavy for a hot rod but 70% of that is up front. theres no concern of the frame twisting up. its all 2x3x1/4" steel. every joint is fish plated and braced like mad. the back end will break loose every time but every time it does, it points the car to the left and it scares me. id like to even up the back end grab/spin to hopefuly get it to go streight rather than always swing the back end out to the right. its about the scaryest thing you coud ever drive!!! ive taken a few guys for rides in it that are long time drag racers with 8 and 9 second cars of there own, and it has left every one of them with clattering knees.
its not a drag car so hooking up isnt a real goal, but a hot rod that only smokes one wheel just isnt a hot rod.
my main concern is even with the wheel spin, will the LSD center section risk getting blown to pieces any more than an open style would? or are thay about compairable as far as strength?
i know the weaker point is probly u-joints but im still interested to know if the LSD and open diff are about the same in strength.



Independent Rear Suspension Forum » how much power can a Jag diff take? » 12/05/2013 9:24 pm

well lets not even entertain the question of welding the spider gears. i knew it was a bad idea to begin with but after a bit of you-tubing others who have done it on solid axles..... ya, it would tare one of these complicated IRS units to bits from the stress of steering. i deffinatly wont be doign that!

but i am still curiouse to know what people think of the posi and how it would fair under 1200lbs or torque compaired to the open diff that seems to be doing ok.

Independent Rear Suspension Forum » how much power can a Jag diff take? » 12/05/2013 7:51 pm

i have a mid 80s 2.88 jag rear in a 1927 ford hot rod thats powerd by a cummins diesel. its been doing fine for about 2 years under about 650hp and 1200lb/tq. i have the rear end out right now to do a few seals and add a bit of strength here and there. while i have it out i was considering swapping my 2.88 open diff for a 2.88 posi diff, but im unsure of how the posi unit would handle that kind of power. will it just explode?
im considering one of these 3 options....
-leave it alone as an open diff (not much fun)
-swap it for the posi unit (if it will handle the power)
-or weld up the open diff into a 'ghetto' spool (lots of fun, but worried about breaking stub axles and so on)

anyone with advise?
would someone be completely insane to weld up the spider gears to make a 'lincoln locker' and expect to not break axle shafts?

The Garage » hi, new guy here » 12/05/2013 7:42 pm

ive been interested in jag IRS's since i was a kid and have not built hot rods around 2 of them with good results.

The Garage » hi, new guy here » 12/05/2013 7:40 pm

hi, new guy here from alberta Canada. been lurking for a bit and finaly time to join. ive already learned alot and cant wait to learn more.

Board footera

 

Powered by Boardhost. Create a Free Forum