Riley Two Port OHV discovery

D

Dave in Denver

Member
Riley Two Port OHV discovery: A the end of last month I posted a question about water leaking out from between block and head of new unstarted engine that had a Riley Two Port OHV head on it. After talking with many of you nad removing the head I discovered that for a 3 inch area (just about where the water outler is on the block) the OHV head has about a .005 hump in it. I used a machinest's square and a feeler guage. along the rest of the head the .003 and .005 gauge would not go under the square but in the area where the water was leaking out the .005 gauge went under. I did this with the engine block surface and could not slide the .003 feeler gauge under anywhere, so I know I have a good block.

I guess the .042 composite gasket did all it could but could not over come this hump. :confused:

I was thinking of using a thicker gasket to over come this area but then got to thinking, could I have this head machined to remove this hump and deck the entire surface?

Has anyone has this done or experienced this with a Riley Two Port OHV head.

Thanks,

Dave
 
I apologize for a bad adjective. I ment to say depression into the flat suface of the head. in look at the head laying on the bench it was a hump from the surface of the bench, but really a depression into the head.
 
That description changes things. I thought you meant the flat surface of the head was high// thus bump // .My first solution will not work. Phil
 
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