Project N/A Checklist

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Leaking oil from the rocker int owt to do with burning oil, it's more cos of the crap seal an the amount of oil kicking about in there. Excess crankcase pressure can cause more leaks though.
 
So basically from what I've observed, the oil gets down into the sump via the same holes that the pushrods are sent through?

Is it the rocker shaft that causes the oil to splash around everywhere then, because there can't be any crank case pressure considering I have honed out the cylinders and fitted new pistons. The oily mist that comes out of the filler cap (with the cap removed) when the engine is ticking over will not as such be forced down the breather pipe and into my air intake manifold then because it is nothing more than oil being splashed around by the rockers and not actually pressure trying to escape.

Think I've got that right have I not?
 
I'm very happy! Just been for a good run and taken her up a long steep hill, no oil leaking what so ever! If only I had thought to clean off all the gunk, it wouldn't still be dripping from places :rolleyes:

Thanks for all the help :)

-Pos
 
Crankcase pressure int necessarily caused by worn rings or bores. The pistons will displace as much volume on the down stroke as they do on the up stroke but cos the crankcase is bigger than the space above the pistons the pressure int owt like as great, this displaced air has to go somewhere which is why you have a breather tube on the filler cap. The oil in the rocker cover is pumped up from the sump an generally lubricates everything in there before draining back down the pushrod holes an a drain tube at the back of the block. Running in int as common as it used to be but I'd still take it steady fer a couple of hundred miles to let the new rings bed in.
 
but shirley the actual volume of yer sump dunt change. ah mean if one piston comes down pushing the air/fumes down then another piston is going up draggin air/fumes with it?

one reason 'running in ' int so common is because the manufactoring tolerences have gotteed smaller so they have a better 'fit' to begin with. not that this appllies to pos's bus.
 
There will always be some gas leakage past pistons, and it will be MORE than usual while new rings are bedding-in.

These fumes should end up in the breather pipe and get eaten by the engine.

CharlesY
 
GRUNT said:
Evening Mr Slob hows the weather an the bees, its piggin cowld up here.
Click to expand...
effernink monsewer grunt, its bit another lovley day here with temperatures reaching quite high° for the time of year. we did have a slight south westerluy this afternoon but otherwise its bin a reet nice day
 
ah mean proper hurricanes, yer know the ones like wumum, you first see them they are all wet and wild and when they leave ..your house and car are gone. probably why they give em wumum's names arnorl
 
I tell you what, I'm really impressed with my engine following my refurb. I can pull up hills in fifth that I would have been struggling with in third and still have plenty of power to pull away. My engine must have been totally worn!

Will it improve further once the rings have bedded in a little?
 
pos said:
I tell you what, I'm really impressed with my engine following my refurb. I can pull up hills in fifth that I would have been struggling with in third and still have plenty of power to pull away. My engine must have been totally worn!

Will it improve further once the rings have bedded in a little?
Click to expand...

Yes, and especially if you drive "free revving" at low throttles, and no slogging with low revs and throttle to the floor.

Running in diesel bores takes longer as some fuel hits the cylinder walls unburnt and lubes them.

CharlesY
 
I wouldn't start worrying about that, they do loose a lot of power on hills, and don't forget you were probably going up a steeper hill than me! I've just noticed a real improvement because it was so unbelievably worn before. It's quite responsive now (still absolutely nothing like as nippy as my Dads 1.4i Citroen ZX!). Have you filled your engine with running in oil?
 
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