B head saga- Not a good weekend

[Gengis]

As long as the ratio of the special plunger tool is 1:1 then yes, you could use a vernier possibly,, I'll go and f check a bit later, the starter is close by but possibly sits a bit lower..

The measurement and accuracy are definitely within the scope of a vernier. You also need to be able to do simple arithmetic.
Anyone have one of these tools, just to make sure that the lever pivot is equidistant from the plunger and the dial gauge. I’m guessing it is.

George

 

[Gengis]

OK. All seems to be well with about 300KM of testing since the rebuild.
Funny thing, the advance setting, it does not ever seem to bother anyone else on the forum and now I am understanding why.. It's a bloody black art and the few who master it keep their findings to themselves.

I had to change the oil pump casing, so I lost my timing mark, BUT I did not remove the IP stay which bolts on to the block and prevents the pump from twisting (we are talking rotary pump here), so in theory I should not have "lost" my timing.

I marked the position of the pump on the new casing, and then tried to set it according to Tom's recommendations a page or two back. I used a 15cm vernier instead of the special tool. Beware here if you try this, the piston in the pump is not flat faced, so the vernier rod does not always hit the same spot. Cut and dress a 1cm length of 6mm rod and insert this (I used a piece of drill bit, the non-curly end).

Now the motor is/was running and starting well where on its current setting, but when I checked it, I got a 0.6mm difference, so I adjusted the pump to get the recommended 1.2mm difference and it ran like crap. Started OK but when you rev her, the engine twisted and bucked on her mountings. I wrote the morning off and fiddled and tried all settings, and the one I was happy with is almost exactly where it was. 0.5mm difference.

I can't explain this unless the special tool "amplifies" the readings by 2. I can't see on the diagrams if the lever of the tool is 1:1 or not. Anyone got one of these tools?? Oh yes, it's black art, and we don't admit to practicing it.
Oh yes, I am in Johannesburg, so about 5000 ft above sea level, not sure if this would make that much difference.
Anyway, I am back on the road with about 5000Km ahead of me over Christmas, so thanks for all the help and encouragement.

 

[gerg]

Ag nee man! Goeie werk. I have seen tools that attach to an injection line and sense the fuel pulse while conected to a regular timing light gun on the crank to give the timing degree. Its # 19 on my list of things to get, or you can use the length of injection line cut to a specific length and rotate the engine slowly till it reaches the top as an outback way of timing.
g

 

[Gengis]

En waar presies is die "Centre of the Universe" ??? Ja, still not sure why I'm fixated on the timing, I guess because it's the only part of the engine that I do not know intimately and in my old petrol daze, timing was everything. (In the old points, plugs and condenser days).
Anyway, it works where it is now with no improvement if I swing the IP either side of my mark, so I'll pretend to be happy.
G

 

[lostmarbles]

OK. All seems to be well with about 300KM of testing since the rebuild.

Funny thing, the advance setting, it does not ever seem to bother anyone else on the forum and now I am understanding why.. It's a bloody black art and the few who master it keep their findings to themselves.

....still not sure why I'm fixated on the timing, I guess because it's the only part of the engine that I do not know intimately and in my old petrol daze, timing was everything. (In the old points, plugs and condenser days).
Anyway, it works where it is now with no improvement if I swing the IP either side of my mark, so I'll pretend to be happy.
G

Glad it's running well George but I can understand how you'd prefer to be able to confirm positively that your timing is indeed spot on.

Maybe someone will contribute something here soon that'll enable you to achieve that.

 

[lostmarbles]

Hi George.

I was looking at this thread from ForeaBoreal:

https://forum.ih8mud.com/diesel-tec...-how-time-your-1hz-1hd-t-fuel-pump-video.html

And he has this video link there on setting the timing on a VE pump:

http://www.youtube.com/watch?v=OI_iV4nlEq0

(In case you didn't notice it.)

 

[crushers]

interesting read ...
Mud boys to the rescue.
love it.

 

[Gengis]

Cheers Tom and Wayne
did a freez frame on the special tool, and it looks the same length on both side of the pivot pin, so still no explanation as to why mine runs well ay .6mm and not 1.2mm. I see there is a spring tention on the plunger, so perhaps it needs this to seat properly. dunno, it's runs best at .6mm and I am almost off on holiday and beyond careing as she is going well.. Be kinda nice to nail it down though.