Hodge's new 4.2

[Hodge]

I dont think this is clutch related Mark @mudski. It seems to be further down the line... Like there is play between the gears somewhere in the diff or gearbox or something...
I should actually almost call it a "jolt" as the car just about jolts forward when something "grabs" and begins applying momentum to the car. But it happens "after" clutch engages not during... If that makes sense it takes a second or milliseconds even , I'm confident its down the line...
I'll come around when i get a moment you take it for a spin you'll see, feel and hear it trust me lol.

[Hodge]

So today I took Mudski for a spin and he had sisten and a drive , trying to sort out what the clunk is. Then I had my work mechanic do the same and all are confident this is most likely on the diff.
Excessive backlash ? Who knows.
To confirm , can i jack up the rear axle , take the rear shaft off the transfer and see if there is play by hand spinning the shaft ?

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[Hodge]

I've been meaning to ask this for a while but I always forget. After a cold start (I think it's only during cold starts (morning)), after a little while of car being on, maybe a minute or so, maybe more I haven't timed it... I notice the engine revs up ever ever so slightly and the headlight's go a tiny bit brighter. It's like there is load on the electrical side that turns off. Could this be the glow plug's timing out ?
It's been doing this since I got the car. Nothing wrong I think, just curious what it is.

I think I have maybe nailed this, this morning. I think it is the clutch fan kicking out ... I had the bonnet up after starting the car checking something, and after a little bit ... motor revved up ever ever slightly and like it had some load taken off and the whooshing air from the fan went much quieter...
It makes sense after speaking to @mudski , clutch is solid when cold, and then it released after warming up a little bit, and then kicks in later again by oil when it heats up...

[mudski]

Put one of your real heavy sparkies gloves on and see if you can stop the fan from spinning with the engine idle. After the engine has had a good drive. As long as you run your hand in the right direction on the spinning fan you wont do any damage. Its when the clutch is hot, is where the issue will be.

[Hodge]

Won't bother . Just slap a new one on when it arrives. Solved.

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[nissannewby]

Rear lsd.......

[threedogs]

Have you tried turning the tailshaft by hand when in gear and rear jacked up
to see how much backlash you actually have?? that should confirm it for you.
with the motor off of course. lol

You already have one of the HPD water pumps fitted yes???

[Winnie]

I reckon it's more likely to be your glow plugs turning off

[threedogs]

I reckon it's more likely to be your glow plugs turning off

does it happen only at start up or evrytime he changes gear,Im not sure

[threedogs]

Won't bother . Just slap a new one on when it arrives. Solved.

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Wouldnt a new fan do the same thing, ????