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#15
by
regcheeseman
on 18 Oct, 2011 03:05
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It is possible for the diesel engine to start in the reverse (opposite) direction of normal operation. The VE pump does not allow this to happen, Figure 11. If the plunger were to rotate in the reverse direction the intake port would open during the injection stroke, preventing any pressure buildup.
Yes but if you shifted the camplate timing, the pressure would build before the port opened. Obviously it wouldn't run in the conventional direction.
But as the piston is timed to the camplate you would need to have the matching pair? erm I think... trying to figure it out in my head. (and struggling)
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#16
by
carrizog60
on 18 Oct, 2011 05:04
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any way to check the head for its rotation direction?
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#17
by
Mark(The Miser)UK
on 18 Oct, 2011 05:32
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When operating backwards, helped by a perfectly symetrical engine cam, the engine would suck air out of the exhaust, compress it and blow it out of the inlet valve.
If it can do this then even rubbish timing will inject fuel and reasonable compression will lift it off the walls if settled. I've never run backwards, but did somehow achieve 60 deg ATDC by accident 
Hagar said he'd done it, but only after he'd proffered the question to arouse debate...
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#18
by
carrizog60
on 19 Oct, 2011 05:10
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the question is not if the engine would work,the pump didnt spill fuel out of delivery valves.
and with the same parts besides the head it worked before,and then after the 10mm attempt.
odd
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#19
by
regcheeseman
on 19 Oct, 2011 05:35
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odd
erm no not really. this is pretty much the same scenario that I had with my pump (9 - 10 mm head swap)
with seemingly exactly the same no delivery problem.
So did you actually spend 5 minutes of your time and turn the fuel screw in yet?
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#20
by
carrizog60
on 20 Oct, 2011 05:24
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the pump is not in my hands.
i selled the head to a friend and he went to another friend who works in a disel shop to install the 10mm head.
i called him and he said that they adjusted the fuel screw...
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#21
by
ORCoaster
on 20 Oct, 2011 11:09
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So I assume that all is well and the pump is working after adjusting the fuel screw in to deliver more fuel. Problem solved or not.
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#22
by
carrizog60
on 21 Oct, 2011 05:08
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even with fuel all in the pump doesent give fuel with this head...
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#23
by
rabbitman
on 21 Oct, 2011 11:11
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even with fuel all in the pump doesent give fuel with this head...
Can you compare both plungers side by side?
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#24
by
carrizog60
on 21 Oct, 2011 11:50
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i dont have the head in my hands...
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#25
by
ORCoaster
on 21 Oct, 2011 12:19
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There isn't an extra copper washer on the end of the head is there? under the nut you remove to check the timing.
One rebuild I did I forgot to put one on and could not move the pump past a certain point. Two washers may reduce pressure to the point it won't deliver. A possibility.
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#26
by
carrizog60
on 04 Dec, 2011 08:02
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ok,got the plunger back.
here are some pics of it comparing to a regular gtd 9mm at left
they have the same number at the back
plunger as good surface,thats just diesel and debris
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#27
by
carrizog60
on 11 Dec, 2011 01:30
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#28
by
burn_your_money
on 11 Dec, 2011 17:19
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The slit is likely for lubrication.
Have you tried running it with the original camplate?
Did you swap delivery valves as well? They could be locked up solid.
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#29
by
carrizog60
on 12 Dec, 2011 05:19
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this was installed by a friend,he had installed these heads before as he works on a injection shop.
i guess the camplate was the same but dont know about the delivery valves but i think he swapped them as other car that he did the conversion were working properly...
