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Post by dani4JB1T on Jul 21, 2005 9:09:39 GMT 11
hi all I want to swap my entire rear 10 bolts axle/diff by a Mu`s 12 bolts axle/diff into my TFS (holden rodeo) and get a stronger 3rd member + rear disc brakes. It can be possible  ...is there any problems to fit ?? I also want to change from my front 8 bolts to 10 bolts, but I think there is more easy than the rear , because all the mountings are the same. cheers |
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Post by geeves on Jul 21, 2005 9:53:34 GMT 11
Should go in with no probs but measure everything first just in case. I would read all the other posts here on rear disc and handbrakes before deciding that rear discs are a good idea.
the isuzu rear disc/handbrake is not the worlds most reliable although with lots of maintanance it works okish
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Post by dani4JB1T on Jul 21, 2005 10:21:36 GMT 11
yes i know...i have follow the posts here on rear disc brakes, and also my Mu`s handbrakes never works fine....for other way my drum brakes work so good. Maybe I have to keep my stock rear brakes and swap the axle/diff only..... the idea of this is run my 2.8Td with the correct drivetrain, not the 2.3l one (my ute is converted to diesel).
yes, i`m going to ask my pillow tonight again.
thanks for your comments geeves
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Post by Yarno on Jul 21, 2005 17:47:06 GMT 11
Are you sure you rear is a 10 bolt??? the ARB locker guide www.arb.com.au/default.htm?menu.htm&0 says that they have a 26 spline which is a 12 bolt... either way yes it would be a very easy swap if it was from a 3.1 MU 1994 on model because these have disc with a drum hand brake, which would suit the P'ups hand brake cables better than the 2.8 which have disc hand brake.... |
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Post by dani4JB1T on Jul 21, 2005 23:13:51 GMT 11
Are you sure you rear is a 10 bolt??? the ARB locker guide www.arb.com.au/default.htm?menu.htm&0 says that they have a 26 spline which is a 12 bolt... either way yes it would be a very easy swap if it was from a 3.1 MU 1994 on model because these have disc with a drum hand brake, which would suit the P'ups hand brake cables better than the 2.8 which have disc hand brake.... yes...mine is 10 bolt. I replaced the 3rd member a months ago and check it the 10 bolts, 196mm ring, 17 splines. So I suppose I have the 8/10 diff combination (not reliable for diesel power). Diesel engines in 4bees were introduce just a few years ago here in Chile (2000-->). Isuzu 4ZD1 comes with the "small" drivetrain setup, and that`s what I have at the moment in my TFS. That`s why I want to install the correct gearing for 4JB1T. A strong engine has to run with strong drivetrain. The axles I have for my ute are from a 1991 2.8 Mu with disc brake. That`s my main brain soup. I`m going to check the itmes next week because I have them in another city, and then tell you how I going on. cheers...  |
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Post by geeves on Jul 22, 2005 10:41:11 GMT 11
The 87 - 89 bighorns used the 8 bolt/10 bolt diffs with the 2.8 motor so for normal use they are quite strong although I belive the Mus all got 10 bolt/12 bolt diffs and I know somone that broke a front diff in a Mu (he broke a cv the week before and has broken anouther one since) The only other thing to watch is the diff ratios. All petrol isuzus got 4.55 but the diesel bighorn and some Mus got 4.3 It would be worth checking which one you have or the speedo could be well out. Once my bighorn stops haveing to be a family car its likly to get 4.5 diffs but the 4.3 is better on the road for ecconomy
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Post by dani4JB1T on Jul 22, 2005 11:36:32 GMT 11
didn`t have idea about 2.8 bighorns with 8/10 combination. That give me great peace of mind.
yes, my Mu diff ratios are the same as my TFS diff ratios: 4.56:1 open both, not LSD.
In the future im going to fit a front mounted intercooler, so my engine will be more powerfull, and my doubt is how reliable could be my stocks 8/10 bolts with a modified 2.8 engine.
Another idea i have is keep my stock rear diff and swap only the front getting 10/10 bolts diffs, ready for install lokka in both axles. Sounds good..eh?
but I think I will go for 10/12.
have a nice day.
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Post by dani4JB1T on Aug 13, 2005 7:00:00 GMT 11
well...i have fitted the complete rear axle in my TFS...now i have 12 bolts, 26 splines, LSD and disc brakes. everything works so good. i have to enlarge the handbrake cable for say work finished....and drive safely.
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Post by marckb on Jan 26, 2009 10:18:33 GMT 11
Hi dani4JB1T ,
I was thinking about the same thing for my TFS , I have a 2001 with drum brakes ans would like to convert to rear disc brake .
Do you notice a big difference in stopping power ?
I already have factory LSD .So only interested in improving brakes .
MarcKB.
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Post by dani4JB1T on Feb 10, 2009 19:29:29 GMT 11
Hi marckb
Well, there's no significant improvement in stopping power after got the rear disk brakes in my pickup truck. When they get wet, river crossing or similar, they dry faster than drum brakes...maybe that's the only big difference.
I installed rear disk brakes without inner parking drum brake (early Mu), so I have to adjust the parking brake very often. That's something you have to keep in mind if you are going to swap your rear axle. Later Mu's and Bighorns comes with inner parking drum brake, so go for one of them.
cheers.
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MattMU
Isuzu Senior
Rodeo Now!
Posts: 206
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Post by MattMU on Mar 10, 2009 18:54:21 GMT 11
I have done the swap into a rodeo a 93 MU rear end complete. The disc barake handbrake doenst need to be adjusted if the mechanism is working properly it adjusts when travel exceeds the norm.
Make sure you swap the load proportioning valve when you swap the disc brake rear...otherwise spike braking will be effected (stopping power is actually greater in drum than disc) and the rear discs will drag when you release after braking hard.
Drums run residual line pressure valves to help stop the wheel cylinders leaking.
Matt.
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...is there any problems to fit ??
