[Engine] Valves DW8

[Arbe]

You have all been very helpful to my son and I which I thank you. All we have to do now is get the job done. Will post when finished but not today it's raining at long last.

[Arbe]

I have the LDV workshop manual for this engine if anyone needs it.

[Arbe]

You don't happen to know what size the bolt that is tool no 23-019 it seems to be a fine thread too.

[jj9]

Do you have a picture or a link to the tool as I can't seem to find anything about it.



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[Arbe]

I hope that I have uploaded the image correctly.

[jj9]

Yes the image is fine.

Just use an m8 (13mm head) bolt or a drill bit.

If reusing the old timing belt put an arrow on it before removal so you know the way it was running.

Nothing wrong with marking the pulleys and belt with paint or Tippex to make sure of correct alignment when refitting.


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[geoff]

Drill bits are better when locating into  non threaded location hole.
When using a bolt ( eg some cams have a slot to align ) then it is more accurate to use a bolt with the non threaded portion in the slot rather than using a fully threaded bolt.The difference in diameter is small admittedly but the gain in rotational accuracy is beneficial.
Don't use the cam and pump location / alignment bolts or drills to lock the engine in order to undo and do up the crankshaft nut you should use a seperate locking pin into the camshaft - remove starter motor to find a better locking point. Idelly you should lock the ring gear.

[Arbe]

Geoff when you have four valves without any gap is it best to remove all shims and then measure gaps and get an idea what size is needed, or is there a better way of doing it.

[cancunia]

Here's how I'd do it using a digital caliper:
1, Take all the shims out, but keep a note of where they came from by putting them into marked containers so you can put them back again.
2, See if there's a shim small enough from the other valves to fit & leave a gap for the valves that currently have no gap.
3, If you can put a smaller shim in where there's currently no gap, you can work out what size shim you actually need by measuring the gap then adding / subtracting from that smaller shim
4, If smaller shims are not an option, I'd consider lapping one of the shims that give no clearance until you can get the smallest feeler into the gap then go back to step 3.

I expect there are other & maybe better ways to do this.

[Arbe]

Thank's sounds like a sensible way.