2002 mini head
#1
#5
Base Coopers use a non sodium filled valve, which will burn and cause large compression leaks through the exhaust.
The S valves are sodium filled, and will resist burning far superior to the base Cooper valves. other than the valves and the different heat range spark plugs, you'll be able to bolt the S head right onto the base Cooper block.
Before you take the job on you'll want some parts, resources on hand; I would recommend a Bentley manual, the head bolts are single use bolts, I would replace the head gasket as well as the thermostat. Other than that you'll want to do an oil change, coolant flush, the basics.
Nick
Detroit Tuned
The S valves are sodium filled, and will resist burning far superior to the base Cooper valves. other than the valves and the different heat range spark plugs, you'll be able to bolt the S head right onto the base Cooper block.
Before you take the job on you'll want some parts, resources on hand; I would recommend a Bentley manual, the head bolts are single use bolts, I would replace the head gasket as well as the thermostat. Other than that you'll want to do an oil change, coolant flush, the basics.
Nick
Detroit Tuned
#6
#7
You are correct in the S engines having lower compression than the NA Cooper engines, the compression difference is in the piston heads, you shouldn't have an issue bolting an S head onto a Cooper.
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08-16-2015 04:15 PM