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Engine installation time

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Waggles:
Hi Mike,

When you had the top end overhaul did the barrels come off too? just wondering if its a partial blockage lower in the barrels, such blockages are frequently gasket goo etc and hard to remove without stripping the motor. Using wire might damage something and cause swarf by scratching the alloy and make matters worse. Could also just poke a blockage further down till it lodges in a corner somewhere.

Also have you checked the oil pump, pump screen and oil filter? If oil pressure is low it could be there is only sufficient 'oomph' to supply thicker oils to the 'easiest' side. Agree partial blockage is more likely tho.

Could also be a missing / malfitted head O ring, so rather than oil not getting through due to blockage it could be leaking pressure.

If you don't fancy a head and barrel strip only other suggestion I can think of is to pump more diesel through and leave it for a bit, it might dissolve a blockage ( but this is unlikely if its gasket goo. )

Your plan of sequential strip and check sounds good to me, but you just may have to strip further than you had hoped. I hope not but be prepared.

Trigger:
Sounds more like low pressure from the pump. Oil should run through the engine the same as the diesel. The pump needs to be investigated first. If you test your oil pressure and it is lower than 50, the pump is at fault.

Bryanj:
Did you remove and clean the tiny restrictor jets that fit into the head under the cam carrier, have a small "O" ring round them---VERY eary heads they don't come out but most do

Mike on a bike:
Well that was fun. Leave it to the experts they say hahaha.
We (my cousin and his mechanic mate who rebuilt the top end for me) took off the cam carriers and all surrounding gubbins, we turned the engine over and oil spurted out of the left side and hit the garage rafters, so I think we can rule out the pump which was checked before fitting, as some kind gent in the States sent me free of charge 2 pumps. The right side was a different matter, the oil only spurted out about a foot, so that I think was telling us there must be a partial blockage somewhere. We removed the head and in doing so accidentally lifted the barrels as well as they are all held in place by the same bolts, oh well just need new gaskets now.  >:(

So we continue to hold down the barrels and turned the motor over and oil pours everywhere. After a quick mopping up we remove the barrells and check all oilways that we can find and they are all clean as a whistle. So we go back to the head and start scratching our heads again. Everything we can see and poke seems clear. Then I remembered watching the youtube video of a guy rebuilding this motor and remembered the restrictor jets, the mechanic and my cousin both well versed with building engines didn't realise these existed on this engine untill I pointed them out, even I had forgotten about these until now, (should have read the above post from bryan J first Ho Hum :o ) We stuck a pin down the left jet and it went strait through, but the right one stopped halfway down, at this point we removed the jet and lo and behold half of the holes were blocked. I am now convinced that this is/was the problem.

Just waiting on new gaskets now then the fun will begin again.

 ;D Happy bunny again!

Bryanj:
Not an unusual problem, way back when fitted qite a few cam kits(cam, followers and carriers) where the owners had "Fixed" a leaking gasket but not cleaned out everything. was always an expensive job but got to the point where even as a "small" workshop and not even a Honda dealer we kept a "Kit" on the shelf ready---even had a local engineer who would bore out the carriers and fit half round bronze pegged bushes if they weren't too bad

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