Thread: 300tdi head change. Other parts?

The AMC complete (with valves and springs) head I got from Turner's had no studs at all, including manifold, they all had to be swapped across.

Are you talking about the timing belt or serpentine? Timing belt tensioner is not something you would expect to be floating around.

Unless its a total rebuild, personally I wouldn't tackle timing and head at the same time - I prefer to do one major task at a time, if the timing is functional before you start the head project, its one less thing that can be out during reassembly. Same goes the other way round. If you do both, and there is a problem, you will then be faced with: Is it head or is it timing? Hope that makes sense.

Also, I'm with Isuzurover on the lash caps - though can't speak for Crane ones. I had a bad experience with the Turner's hardenened caps, which I fitted with new rocker arms. They were so hard, and so "unsmooth" and had square 90º shoulders and not the angled/chamfered shape of the standard ones, that they actually wore themselves right into the new rockers within 2K km. They sent me some more of both, the same happened again - they claimed my timing must out and the valves were hitting the pistons. They were not (another reason not to do the two major tasks at one time, the rockers I replaced were original and not real bad, if the timing was out they would have shown the same wear), but I checked anyway, all was spot on. Eventually bought a new set of rockers and OEM caps locally, that was nearly 30K km ago, and they still look like new, with only very minimal adjustments needed, like 1 thou on a couple of valves.

The Turner's head has been good though, and they did try and help. I just won't be buying their lash caps again.

Originally Posted by bee utey

New valve lash caps.

Originally Posted by isuzurover

This. And only get genuine. I had a set wear through in about 500 km. Since then I have also enlarged the oil hole in the head gasket.

Actually I'd use aftermarket VW air cooled racing ones or Crane or Comp Cams 8mm ones.
Much more consistent, the current OEM Land Rover seem like cheese. Actually Fetta.

Originally Posted by Dougal

The injector studs are interesting. Does a new AMC complete head not come with injector studs installed?

if it is like mine it will come without studs or the injector posts

Originally Posted by Dougal

Thanks guys.
...
The injector studs are interesting. Does a new AMC complete head not come with injector studs installed?

Mine didn't - I used the ones out of the old head, used my old lash caps as well - sounds like it was better to do that than use some of the replacements that have been obtained haven't experienced any change in valve clearances since.

A new fan belt tensioner wouldn't do any harm either - the belt starts to chirp when the tensioner is on the way out - the critical wear is not just in the pulley bearing but the tensioner shaft itself - some people pack them out with coins or washers but it's only a short term fix.

If your valve lash caps are in good condition use them, new Land Rover lash caps are rubbish, I will include address of previous posts on Lash Caps: Post # 30
300tdi valve lash caps disintegrating
Also your old gasket will tell you the thickness required by the number of holes in edge of gasket, usually 3 holes, go for the laminated metal gasket, most new heads come supplied with them and some manufacturers void head warranty if you don't. Get Crane valve lash caps as per previous post and use plenty of engine rebuild lube on valve tip and lash cap, Regards Frank.

Originally Posted by Dougal

Thanks guys.

Injector washers and lash caps are in the genuine Elrig gasket set. Genuine pump is coming with a gasket too. There's a timing belt tensioner floating around in the back of the vehicle so I suspect it's been changed in recent history.

The injector studs are interesting. Does a new AMC complete head not come with injector studs installed?

Take the advice of myself and others on the Valve Lash caps.
Also check that your valves are seating correctly by pouring some petrol into the ports and see if there are any leaks.
I bought a brand new AMC head and it leaked like a sieve, I lapped in all of the valves and no more leaks, some LOL Spanish lady that gets $10 a day would not be considered too good at assembling heads, I have seen new heads without valve spring seats under the springs, best head gasket is Victor Rienze, Regards Frank.

Re the fan belt tensioner, I've found here in Oz that it's cheaper to buy from a normal parts store (in my case, Bursons) than my usual Landy supplier.
It's a Dayco tensioner, can't recall their part # ATM.

Originally Posted by rick130

Re the fan belt tensioner, I've found here in Oz that it's cheaper to buy from a normal parts store (in my case, Bursons) than my usual Landy supplier.
It's a Dayco tensioner, can't recall their part # ATM.

x2. Bursons price was a lot less than even the ebay sellers. Around $90 last time I got one. Part# APV 1004 Land Rover part# is ERR4708