The head is back and the new gaskets and bits are here. It was a major job cleaning the block and scraping the old gasket off. I hope to put the engine back together in the next few weeks.
Wednesday, August 24, 2016
Thursday, August 4, 2016
Head and valves OK
The machine shopped checked the head and valves - everything looks good. So, we're down to replacing the head gasket.
Much to my chagrin, the MLS gasket that was used is probably the component that failed. So I think I will go with a copper gasket this time.
Much to my chagrin, the MLS gasket that was used is probably the component that failed. So I think I will go with a copper gasket this time.
Wednesday, August 3, 2016
Head off
Some pics (that is not a valve hitting the piston, it's a little finger scratching to see the build up).
Monday, August 1, 2016
Head strip down
Stripping the Lotus Twin Cam head down is a fairly straight forward process. With Miles Wilkins book in hand, and some tips from the community, it takes about 4 hours. It's now ready to go back to the machine shop.
The camshafts and the exhaust valves all look good. I was concerned that cylinder 3 exhaust valve was sticking, allowing oil to leak into the cylinder, but the port looks clean. I imagine oil was leaking onto the hot exhaust and hopping up onto the block.
I have ordered new gaskets from Burton Power in the UK. The new head gasket, made by Cometic, is composed of stainless steel and has bonded membranes so that adhesives are not required.
The camshafts and the exhaust valves all look good. I was concerned that cylinder 3 exhaust valve was sticking, allowing oil to leak into the cylinder, but the port looks clean. I imagine oil was leaking onto the hot exhaust and hopping up onto the block.
I have ordered new gaskets from Burton Power in the UK. The new head gasket, made by Cometic, is composed of stainless steel and has bonded membranes so that adhesives are not required.
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