jonboy
Member
Basically there isn't any...
I did a major topend overhaul...new cam, valves as necessary, guides, head skimmed.....put it all back together and a bout a year 4k kms later i blew a hose and overheated, blew the head gasket....
So, off with the head and to my horror there is a very small crescent shaped, fingernail paring sized mark on the top of every piston crown, and a corresponding polished mark on the circumference of each inlet valve, maybe 1cm.... the valve is obviously fouling the crown, but the mark on the crown, though visible, you can barely feel, more in the carbon really, but definitely there's contact.
I'm thinking I'm not going to be able to skim the head again,
and so what are my options do you think...the engine was running fine after I'd replaced the water hose, though only a minute or two and before I realised the head gasket was chuffing, and no horrible noises so no obvious serious structural damage....
how about machining the top of the valve heads, adjusting the tappets to open the valves less, thicker or double head gaskets??
all advice gratefully appreciated Thanks JB
I did a major topend overhaul...new cam, valves as necessary, guides, head skimmed.....put it all back together and a bout a year 4k kms later i blew a hose and overheated, blew the head gasket....
So, off with the head and to my horror there is a very small crescent shaped, fingernail paring sized mark on the top of every piston crown, and a corresponding polished mark on the circumference of each inlet valve, maybe 1cm.... the valve is obviously fouling the crown, but the mark on the crown, though visible, you can barely feel, more in the carbon really, but definitely there's contact.
I'm thinking I'm not going to be able to skim the head again,
and so what are my options do you think...the engine was running fine after I'd replaced the water hose, though only a minute or two and before I realised the head gasket was chuffing, and no horrible noises so no obvious serious structural damage....
how about machining the top of the valve heads, adjusting the tappets to open the valves less, thicker or double head gaskets??
all advice gratefully appreciated Thanks JB