[dhallworth]

There’s very, very little out there about rebuilding the Supercharger so I might buy another set of bearings to replace them in my spare charger and host that on YouTube once I’ve got this lot sorted.

 

[OBC John]

Don't forget who talked you into it when the money starts rolling in.

 

[Gav]

Don't forget who talked you into it when the money starts rolling in.

Hey you weren‘t the only one! 5% each?

 

[dhallworth]

Tonight saw a bit more time on the lathe to make an adapter for the smoke tester

That was then screwed into a scrap bit of steel that I’d drilled bolt holes in the right place on.

I then put some foam on the back of that to help it seal and bolted it to the charge cooler.

And connected the pipe from the smoke machine to it.

Initial pressure testing at 10PSI didn’t reveal anything. I then upped the pressure to 20PSI and there was a tiny bit of smoke visible from underneath the charge cooler on the OS bank of cylinders.

I removed the charge coolers as I’ve got new gaskets arriving tomorrow. If I could get my hands on the little 🤬 who had been in there before me I’d willingly do time for killing him. Instead of replacing the gaskets, everything had silicon on both sides of it. It’s taken me 2 hours with a Stanley knife blade removing all the mess.

Anyway, once the charge coolers were off I decided I’d do the valve cover gaskets as they were leaking oil down both sides of the engine. If you do it when the charge coolers are in place you need to depressurise the air conditioning. Thankfully, doing it this way you don’t.

First job for tomorrow after a trip to the dealer to collect parts is to spin it over on the crank pulley and check the valve clearances. That’ll give me a good idea on how badly the valve seats have suffered on LPG as when the seats are knackered there’s no clearance.

I’m hoping that they’re OK as I don’t want to go any further then this at the moment despite having a brand new set of cylinder heads on the shelf in the workshop.

David.

 

[OBC John]

Jeez! I've seen videos of open heart surgery that didn't look as complicated as this . . .

 

[dhallworth]

It was a sobering sight as I looked back at the pictures over my morning coffee today!

 

[wilf]

Glad my Stag is a deal simpler than that!

 

[dhallworth]

🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬

Is 11am to early to start drinking!?!?

Spot the difference:

The first picture is of the drivers side head. The second picture of the passengers side head.

The cam lobes on the drivers side head line up with each other and the chan is nice and flat.

The cam lobes on the passengers side head aren't in line and the chain looks like a 🤬 humpback bridge. The chain has so much slack in it that the tensioner is fully extended.

Looks like my tales of not doing the heads were a joke, eh!

David.

 

[PeteA]

Bu99er!!

 

[wilf]

At least you caught it before it jumped a tooth or two.

 

[dhallworth]

Very true. If it had skipped or snapped it would have made one hell of a mess.

Every cloud n all that. Certainly didn’t feel like it a couple of hours ago!

Timing chain kit:

RANGE ROVER 4.2 TIMING CHAIN KIT SUPERCHARGED L322 + SPORT 4.2 V8 SC GENUINE LR | eBay

LANDROVER 4.2 SUPERCHARGED V8 TIMING CHAIN KIT. FITS BOTH THE 4.2 SC RANGE ROVER SPORT AND L322 RANGE ROVER MODELS. GENUINE LAND ROVER TIMING CHAIN KIT WITH ALL GUIDES,CHAINS AND TENSIONERS . MALTINGS OFF ROAD LTD WESTWOODSIDE DONCASTER DN9 2ED.

www.ebay.co.uk

Special tools for removing crank pulley and setting timing I’ve bought from an RR forum member for £125.

Cylinder head gaskets are £71 each.

Exhaust manifold gaskets aren’t expensive.

Timing cover gaskets aren’t bad either.

It’s another thousand pounds going into it though. 😫

Maybe we add a power upgrade twist at the same time… 🤔

 

[cutlea01]

Good spot David. I wasn't aware the intercam chains were subject to stretch, only the main timing chain? Clearly, they do.

 

[PeteA]

All chains, even Hy-Vo, stretch..

 

[dhallworth]

Just priced everything up…

LH Head Gasket - £70.56
RH Head Gasket - £70.56
LH Manifold Gasket - £35.41
RH Manifold Gasket - £35.41
Large Front Timing Cover Gasket - £28.24
Small Front Timing Cover Gasket - £27.32
Timing Cover O-Ring - £5./83
Crankshaft Oil Seal - £37.36
Charge Cooler Gaskets - £74.72
Valve Cover Grommets - £31.20
Cam Sprocket Bolts - £11.12
Tensioner Bolts - £31.64
Crank Pulley Bolt - £9.55

Total in gaskets and bolts - £463.78.

That’s on top of the £180 I spent at the dealer this morning for all of the intake gaskets and injector o-rings.

Then there’s the timing chain kit on top of that.

Best don my crash helmet before venturing home from the workshop this evening!

 

[dhallworth]

Here’s a video showing the difference in the chains:

The first chain which is still tight is the one on the drivers side head. The second is obviously the passengers side head.

What’s surprising is it had a miss when cold but was incredibly smooth once warmed up.

David.

 

[wilf]

That's a huge difference between those two chains. One has to wonder why?

 

[dhallworth]

I wish I knew to be honest. One of those things that I’ll probably never know.

Be interesting to see if there’s any marks on the sprockets or the chains when I get it stripped.

Need to wait for the tools to remove the crank pulley to arrive before doing much more now.

 

[TheStig]

I guess you'll be checking every bearing & every valve guide for evidence of abnormal wear?

Any chance the chain on the other side has been replaced?

 

[Phil1]

All chains, even Hy-Vo, stretch..

My college tutor used to cringe and bollock whoever mentioned chains "stretching" while in class. He used to boom across the room "chains are incapable of stretching, they WEAR". 🤣

Technically correct I guess, but we all know what we mean.

 

[OBC John]

My college tutor used to cringe and bollock whoever mentioned chains "stretching" while in class. He used to boom across the room "chains are incapable of stretching, they WEAR". 🤣

Technically correct I guess, but we all know what we mean.

I had that very "discussion" on here some time back. Thought I'd keep schtum this time so glad you've raised it.