Thread: Clutch Change - advice needed.

Got nearly all the bits I need including a new Isuzu turbo pressure plate, release bearing, pivot, plastic clips, etc, etc.

Was hoping to get the old girl back together this weekend, but I can't get hold of a friction plate in Perth for "love nor money", as they say.

Main dealer said 8 weeks, ex-UK and they can't resolve the part number of AYG34637 or AYG3463 to a modern equivalent. Said AYG numbers were Australian Army and not used anymore? No idea myself. Can't see why it would be ex-UK if it's an Ozzy part.

LR specialist in Perth are on the case and are currently also having trouble getting one.

I said the friction plate is the same as a 110 V8 5 speed one (i.e. 275mm diam with a fine spline). But when looking up the part number for a V8 5 speed clutch plate, it is superseded by a new number. I've seen the plate that corresponds to that newer part number and it looks very similar to mine, but it's 268mm diam not 275mm, although it does have the fine spline. I don't want to put the wrong plate in.

Does anyone know anything that will help me get a clutch plate for my 110 Isuzu 5 speed (Santana LT85), perhaps a newer LR part number for the correct clutch plate.

Thanks in advance,

Jon

PS. Is the one you have 275mm diam Ben?

Jon, how about this?
Exedy - Spec Sheet

Simon

Just out of interest mate... how long did it take you get drop the box out.???

Gonna be doing mine soon.. just wanna get an idea

Originally Posted by abaddonxi

Jon, how about this?
Exedy - Spec Sheet

Simon

Originally Posted by Dougal

My clutch discs are 275mm OD.

Going by the Isuzu truck info on the Exedy site, they used a 275mm clutch disc up to 1/1987 and from 2/87 they used 300mm.

The Exedy site has another entry for Isuzus in Land Rovers,

Exedy - Spec Sheet
Dimensions -275 X 1 1/8 "X 10

The earlier link had dimensions of - 275 X 26.25 X 23

Simon

Originally Posted by Bush65

Going by the Isuzu truck info on the Exedy site, they used a 275mm clutch disc up to 1/1987 and from 2/87 they used 300mm.

Yes I spotted that.
My current clutch plate belongs the the 3.6 litre 4BE1, it runs exactly the same spline as the later 4BD1T's but is 275mm instead of 300. Isuzu changed their MSA gearbox input splines about the same time they changed clutch diameters on the 4BD1T.

Remember those discussions I had about my clutch pressure plate being the same as the landrover item. It all makes sense now. Landrover's conversion kit is based on the early 4BD1/4BD1T parts. If you're swapping in an early 4BD1T like mine then a flywheel and pressureplate swap probably isn't needed.

Does anyone else have a flywheel out? I'm curious to see if the later flywheels are heavier than my early one and if the pressure plate bolt holes match.

Originally Posted by abaddonxi

Jon, how about this?
Exedy - Spec Sheet

Simon

Thanks Simon, that link has been a massive help - PM of thanks sent! However no one has one in stock, 8 weeks to get one apparently. Same story with Extreme clutches - would have to get made & shipped in from Japan.

Originally Posted by Mikey0211

Just out of interest mate... how long did it take you get drop the box out.???

Gonna be doing mine soon.. just wanna get an idea

About a day working on my own to do the following:
* Get car well off the ground, sitting on 300mm limestone blocks AND axle stands + wheel chocks.
* Drop front & rear props.
* Disconnect handbrake cable (rod type drum actuator on my 1990 model)
* Remove handbrake drum (optional, but lighter to handle with it off).
* Remove chassis cross member - v. stubborn in my case, corrosion between mating surfaces.
* Inside car, take out plastic transmission cover (couple of stubborn screws)
* Disconnect all linkages from transfer box lever to transfer box.
* Disconnect 2 breathers and reverse switch wiring
* Disconnect speedo cable from transfer box.
* Support transfer box, undo mounting and remove transfer box leaving gearbox in place (optional, but lighter & safer to remove as 2 separate bits - unless you have a 4 speed with LT95)
* In engine bay, remove air cleaner element and it's support bracket.
* Disconnect clutch slave cylinder pipework, undo 2 bolts holding it in place and withdraw the slave cylinder.
* After struggling a bit with the transfer box, I fabricated a rig that bolts to my trolley jack to hold the gearbox securely to make removing it safer & easier.
* Support gearbox on newly made rig/trolley jack, remove gearbox mounting and undo bellhousing bolts - these were a dream with no hard to get or hidden ones (but look out for the one just above the starter)
* Support back of engine to stop it tilting too much on it's mounts, withdraw gearbox and bellhousing - Trolley jack rig needed a few kicks backwards to get it moving. Take lot's of care you don't want to drop the very rare alloy bellhousing.
* Unbolt pressure plate, turn at a time on each of the retaining bolts to ensure you don't distort it. I have a new pressure plate but I'll still keep the old one as a spare. Remove clutch plate.

Hope this helps,

Jon

Originally Posted by Bush65

Going by the Isuzu truck info on the Exedy site, they used a 275mm clutch disc up to 1/1987 and from 2/87 they used 300mm.

That's if your conversion has used an Isuzu box. All Rover boxes (LT85 & LT95) used in the factory Isuzu SIII's and 110's have a 275mm diam clutch. But the 4 speed and 5 speed ones have different splines.

Originally Posted by abaddonxi

The Exedy site has another entry for Isuzus in Land Rovers,

Exedy - Spec Sheet
Dimensions -275 X 1 1/8 "X 10

The earlier link had dimensions of - 275 X 26.25 X 23

Simon

The 275 X 1 1/8 "X 10 is the 10 spline one for the 4 speed LT95.

The 275 X 26.25 X 23 is the 5 speed LT85 23 spline one.


Well, thanks for all your help guys, I now have the correct clutch plate (AYG 3463) thanks to the extended efforts of Ian and Stuart at Rovacraft.

Jon

Originally Posted by Dougal

...
Does anyone else have a flywheel out? I'm curious to see if the later flywheels are heavier than my early one and if the pressure plate bolt holes match.

I don't have a scale to measure the weight - but I could measure thickness etc. and calculate approximate weight.

I can't imagine the smaller pressure plate housing using the same bolt circle as the larger version. From the pic that was posted showing the pics of landy and truck flywheel, clutch and flywheel housings it is different.