Perentie clutch

[RoboDouche]

Got an 89 Perenti absolutely love it but she's struggling with the clutch on hills. Gets a bit smelly but it's not slipping.

Also it drops out of third occasionally.

Anyone else have any similar problems?

I'm thinking about throwing a new clutch in but I'd rather save my money if I can;)

[Bearman]

Got an 89 Perenti absolutely love it but she's struggling with the clutch on hills. Gets a bit smelly but it's not slipping.

Also it drops out of third occasionally.

Anyone else have any similar problems?

I'm thinking about throwing a new clutch in but I'd rather save my money if I can;)

If you can smell it, it has to be slipping. Jumping out of gear usually means end float problems on the mainshaft - is it under or off throttle when it does it - my guess is off.

[RoboDouche]

Yeah you got it! Off throttle. It'll be in gear and I take my foot off the accelerator around a corner and if I put it back on it's jumped out?

[RoboDouche]

My local transmission guys are telling me $3000 to rebuild the gearbox!

[Barefoot Dave]

Robo, Brian (above) is the man to talk to.

[Bearman]

My local transmission guys are telling me $3000 to rebuild the gearbox!

Yes, that is about what it costs. And that is not including any major items like mainshaft replacement. Labour is the main factor. A lot of hours involved in rebuilding one of these - just cleaning it before disassembly takes some hours. Make sure the local mod know about setting up the TRB intermediate shaft. I have heard some interesting stories about how some "reputable" places have set up the intermediate shaft. :o Also insist that they use a genuine gasket set and genuine synchro rings.

[RoboDouche]

Sounds like a bit of a nightmare! I wonder what other boxes would fit.

I'd like to pull the lot out and put a Lexus V8 in or something!

[Bearman]

Sounds like a bit of a nightmare! I wonder what other boxes would fit.

I'd like to pull the lot out and put a Lexus V8 in or something!

I wouldn't swap it for anything else Rob. The Isuzu plus LT95 is a great combination in this vehicle. Stick with it.

[RoboDouche]

I was just throwing it around wasn't serious I'm a sucker for keeping vehicles original anyway.

I would like a turbo though!

You guys tried turning the idle up a little to get rid of the low idle shakes?

[Barefoot Dave]

Yeah, mate. one of the first things I do and reccomend to all. big difference!

[mick88]

I was just throwing it around wasn't serious I'm a sucker for keeping vehicles original anyway.

I would like a turbo though!

You guys tried turning the idle up a little to get rid of the low idle shakes?


Just don't turn the idle up too far or you will find it a pain in the but when it warms up as it will race along a bit quick in first gear. I turned mine up a smidge and still turn the hand throttle up a touch until it reaches running temperature.


Cheers, Mick

[UncleHo]

Ooh! dear

[Hellonwheels]

If you can smell it, it has to be slipping. Jumping out of gear usually means end float problems on the mainshaft - is it under or off throttle when it does it - my guess is off.

Gday Brian, I’m located up near where your heart wants to be in FNQ. I’ve got a replacement clutch for my Perentie, I’ve had the old girl for nine years now and it’s starting to smell a little every time I head down to cairns and have to climb/crawl back up on the Tablelands. What’s simplest method, to change clutch in a bush setting, engine out or dismantle seat box and roll gearbox back?
Cheers in advance for your answer.

[Bearman]

Gday Brian, I’m located up near where your heart wants to be in FNQ. I’ve got a replacement clutch for my Perentie, I’ve had the old girl for nine years now and it’s starting to smell a little every time I head down to cairns and have to climb/crawl back up on the Tablelands. What’s simplest method, to change clutch in a bush setting, engine out or dismantle seat box and roll gearbox back?
Cheers in advance for your answer.

If you are only doing the clutch replacement, engine out is the easiest way especially out bush. Don't forget to check the rear main for leaks as well. What clutch are you putting in? If you are contemplating putting a turbo on or it has one already the best option is to go the turbo motor pressure plate like the 6x6 have in them. The clutch driven plate is the same for both vehicles. Oh and don't forget the clutch throwout bearing. If you have bought a kit and it has all these bits just make sure the clutch bearing unit is the same length as the old one. Some of them are just adding the V8 one to the kit and it won't work on the Isuzu.

[Hellonwheels]

If you are only doing the clutch replacement, engine out is the easiest way especially out bush. Don't forget to check the rear main for leaks as well. What clutch are you putting in? If you are contemplating putting a turbo on or it has one already the best option is to go the turbo motor pressure plate like the 6x6 have in them. The clutch driven plate is the same for both vehicles. Oh and don't forget the clutch throwout bearing. If you have bought a kit and it has all these bits just make sure the clutch bearing unit is the same length as the old one. Some of them are just adding the V8 one to the kit and it won't work on the Isuzu.

Gday mate,
Thanks for your reply. I’ve got some new mounts and need to flush coolant, so Engine out will be the way…will just grab a chain block first as I’m ‘out bush’. (Hmm…Wonder how much weight that steel roof beam in the shed will carry…🤣) I’m replacing with the KLR HD clutch, apparently suits 6x6 and turbo engines. Full kit with T/O Brg etc etc. forgot to buy a rear main, might grab one before I start.
Cheers.

[p38arover]

forgot to buy a rear main, might grab one before I start.

You have a couple of choices for the rear main oil seal:

This:

4BD1 Rear Main Oil Seal - KLR Automotive (https://klrautomotive.com.au/4bd1-rear-main-oil-seal/)

And this:

Rear Main Oil Seal Kit 4BD1 - KLR Automotive (https://klrautomotive.com.au/rear-main-oil-seal-kit-4bd1/)

I have no idea which is better but I'd want the best if the engine has to come out to fit it!