18-11-2022, 06:43 PM
An update, following advice from more learned fellows, the block, head, pistons and rings have been delivered to Southern Rebore Services to check everything out for me.
They report that there is insufficient wear in the bores that would require a rebore and new pistons.
The head has a slight bow, again nothing significant but they will lightly dress this to rectify the bow, the block is ok.
The valves/seats have all been vacuum tested and no issues found and they believe the block to be surprisingly good condition.
So they are going to hone the bores and provide new rings and set the gaps accordingly.
I have rectified the end float on the camshaft, despite having the engine stripped, I really do not want to disturb the bottom end of the engine and remove the cam unless it was absolutely necessary. And so I have made a new peg bolt with a larger peg diameter than the original which was constantly trial fitted until it fitted into the bearing and now eliminates the end float. I realise this may not follow learned council but considering the mileage I am likely to do, it does follow the original design (albeit that was somewhat flawed) it will probably see me out!!
As for Ruby running rich I now realise that the original carburettor had a gasket at the top of the float bowl. When the carb was originally cleaned and put back on the engine a new gasket was made that was an identical replica to that removed (I still have the original). However what I have now come to realise is that there is no hole in the gasket that sits directly above the slow running jet and so would stop any flow between the hole in the cover and the jet in the float bowl.
Having done a little research it appears there is not normally a gasket fitted at the top of the float bowl?
So if this is correct the question is: would this be the cause of the engine always running rich or should I be looking elsewhere??
Again all comments welcome.
Cheers
They report that there is insufficient wear in the bores that would require a rebore and new pistons.
The head has a slight bow, again nothing significant but they will lightly dress this to rectify the bow, the block is ok.
The valves/seats have all been vacuum tested and no issues found and they believe the block to be surprisingly good condition.
So they are going to hone the bores and provide new rings and set the gaps accordingly.
I have rectified the end float on the camshaft, despite having the engine stripped, I really do not want to disturb the bottom end of the engine and remove the cam unless it was absolutely necessary. And so I have made a new peg bolt with a larger peg diameter than the original which was constantly trial fitted until it fitted into the bearing and now eliminates the end float. I realise this may not follow learned council but considering the mileage I am likely to do, it does follow the original design (albeit that was somewhat flawed) it will probably see me out!!
As for Ruby running rich I now realise that the original carburettor had a gasket at the top of the float bowl. When the carb was originally cleaned and put back on the engine a new gasket was made that was an identical replica to that removed (I still have the original). However what I have now come to realise is that there is no hole in the gasket that sits directly above the slow running jet and so would stop any flow between the hole in the cover and the jet in the float bowl.
Having done a little research it appears there is not normally a gasket fitted at the top of the float bowl?
So if this is correct the question is: would this be the cause of the engine always running rich or should I be looking elsewhere??
Again all comments welcome.
Cheers