Diffy gurus: help please
11-17-07, 02:48 PM
#3
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That reminds me of a Toresen type LSD... but there should be some sort of pinnon gear where those holes are....
I agree Ken, that's some weird **** O.o
I agree Ken, that's some weird **** O.o
11-17-07, 03:52 PM
#4
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At first it looks like RX-4 13B 28 spline ,
But the cut outs in the diff carrier for the bigger ring gear ? , suggests it's from a 1991 onwards Mazda / Ford E- series delivery type van / pickup ??
How many bolts holding the ring gear on & spline's ??
Just a guess !
But the cut outs in the diff carrier for the bigger ring gear ? , suggests it's from a 1991 onwards Mazda / Ford E- series delivery type van / pickup ??
How many bolts holding the ring gear on & spline's ??
Just a guess !
11-17-07, 06:13 PM
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It does look like the RX-4 13B diff !
http://foxed.ca/foxed/index.php?page=rx7manual
http://foxed.ca/foxed/index.php?page=rx7manual
11-17-07, 06:15 PM
#6
It came out of my bro's 74 RX-4. I had to take everything apart due to an oil leak. It confused the **** out of me. I though I've seen them all. I should have investigated some more but I've got to get it back on the road so I can get more miles on a newly built full-bridge TII block. Whatever it is, its a 3.90 and left 2 tire marks.
thanks guys.
thanks guys.
11-17-07, 09:03 PM
#7
FB+FC=F-ME
Its clearly a 4 pinion spider unit,so its not your typical open diff that you'd see in an S or GS.
The lack of ramps on the spider pin shafts tells me its not a torque locking type diff either,like the GSL and SE have.
No indicators that its a Torsen either.....they tend to be more open to allow the oil easy access to the many internal gears.Also,that side gear appears to be a standard bevel type differential gear,rather than the spiral type worm gears of the Torsen.
Is not a Viscous LSD since the carrier is open.
I see two possibilites.......its either a standard peg-leg diff with a beefy,4 pin carrier unit.
Or its a passive, clutch LSD similar to the Trac Lock LSD made by Dana Spicer.There would be clutch discs and springs under the side gears which provide some holding strength,but let loose once the difference in traction becomes more than they can hold.There is no increase in holding power upon acceleration because the carrier is not a split type with loading ramps on the spider pins.These type of LSD's are destine to become fully standard open diffs once the discs wear and the spring pressure subsides.
Also.......any diff can lay two strips of rubber,regardless of if its open,LSD or a locker.Its just a matter of having exactly equal traction at both tires.
The lack of ramps on the spider pin shafts tells me its not a torque locking type diff either,like the GSL and SE have.
No indicators that its a Torsen either.....they tend to be more open to allow the oil easy access to the many internal gears.Also,that side gear appears to be a standard bevel type differential gear,rather than the spiral type worm gears of the Torsen.
Is not a Viscous LSD since the carrier is open.
I see two possibilites.......its either a standard peg-leg diff with a beefy,4 pin carrier unit.
Or its a passive, clutch LSD similar to the Trac Lock LSD made by Dana Spicer.There would be clutch discs and springs under the side gears which provide some holding strength,but let loose once the difference in traction becomes more than they can hold.There is no increase in holding power upon acceleration because the carrier is not a split type with loading ramps on the spider pins.These type of LSD's are destine to become fully standard open diffs once the discs wear and the spring pressure subsides.
Also.......any diff can lay two strips of rubber,regardless of if its open,LSD or a locker.Its just a matter of having exactly equal traction at both tires.
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11-17-07, 09:59 PM
#9
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Steve, how in the HELL did you manage all of that? Did you memorize the encyclopedia of differentials? Wow.
11-17-07, 10:10 PM
#10
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My other hobby........
Setting up your own diffs and being able to work on drivetrain stuff in the field is a pretty mandetory skill when you get serious about rockcrawling.Its also an easy way to make good,quick cash since shops charge a fortune for setting gears.Its a precise,meticulous proceedure that goes well with my left-brain'edness.
Setting up your own diffs and being able to work on drivetrain stuff in the field is a pretty mandetory skill when you get serious about rockcrawling.Its also an easy way to make good,quick cash since shops charge a fortune for setting gears.Its a precise,meticulous proceedure that goes well with my left-brain'edness.
11-17-07, 10:31 PM
#12
FB+FC=F-ME
Thanks,I need to get some fresh pics,those a kinda old now.
Totally rust free tub, painted super bright yellow with a fully Rhino Lined interior,a full cage and a full coil spring suspension system.....all going together this winter.
Man,its kinda nice being done building up the RX-7......I couldnt afford to do two projects at once!
Totally rust free tub, painted super bright yellow with a fully Rhino Lined interior,a full cage and a full coil spring suspension system.....all going together this winter.
Man,its kinda nice being done building up the RX-7......I couldnt afford to do two projects at once!
11-17-07, 10:33 PM
#13
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Holy god man thats a nice Sammy.
what have all have you done to it?
I have a love for sammy's as well as 7's i hope someday to be able to afford to buy another sammy and drop a 12a into it
ETA LOL we posted at the same time
what have all have you done to it?
I have a love for sammy's as well as 7's i hope someday to be able to afford to buy another sammy and drop a 12a into it
ETA LOL we posted at the same time
Last edited by Anarx; 11-17-07 at 10:35 PM. Reason: funney
11-17-07, 10:54 PM
#14
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Wow, super bright yellow rock crawler. Now, that is some nice flash. I love the old school Jeeps and I think one time I saw an old *****'s that was on Xtreme 4X4. Tan four door I think. Not one real major dent/scratch on it. Thing was a beaut.
11-18-07, 12:34 AM
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A hi five goes to wackyracer for asking the questions !
And the other valuable information from , Kentetsu , DemonSpawn67 , steve84GS TII , 85 FB , + the rest for asking !
Good to see some old heads come together !
I'll go back to sleep now
!
Thanks todate.
REgards.
Pete.
And the other valuable information from , Kentetsu , DemonSpawn67 , steve84GS TII , 85 FB , + the rest for asking !
Good to see some old heads come together !
I'll go back to sleep now
!Thanks todate.
REgards.
Pete.
11-18-07, 04:51 PM
#17
FB+FC=F-ME
Its been a fun project over the last few years.Its kinda my "anti-RX7" in that,I dont have to worry about keeping it clean or damaging it in any way.Rockcrawling is kinda a controlled demolition derby sometimes,you decide how much carnage your rig sees based on nerve and confidence.Plus its a fun vehicle just to drive around and tow stuff for work and play.
The frame and body are all factory Samurai but the drivetrain is all mish-mash of just about anything you can imagine,including RX-7 stuff.
2.8L Chevy TBI V-6....fully CA smog legal and about 150HP.Gets 20MPG and Ive towed 5000lbs with it safely.
Power steering/onboard air/welder run off the engine.
T-5 tranny and Dana300 T-case wtih 4:1 gears/twin stick
Dana 44 axles with chro-mo shafts,4.56 gears rear locker front LSD
F-150 front discs with TII calipers,Samurai rear discs with maxima calipers
11-18-07, 05:08 PM
#18
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Wow, that thing is a beaut. And, nice choice of a Chevy 2.8L V6 in it. Those things, despite their small displacement, gave some decent grunt. Ever thought of a 4.3L TBI V6? Had one of those in my little S-10, that thing has some nice power to it. Just like a 350, but with the two rear cylinders lopped off.
