The standard header I have on the car has a slightly smaller flange than the head exhaust ports which mush be bad for flow. Thanks for the info on the gasket.
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RallyMini370 Well-Known Member
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If the standard header you mention is OEM, it does not have smaller flange ports than the stock head, Cooper or MCS.
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RallyMini370 Well-Known Member
The reason I took the head off! a burnt out exhaust valve and a big sert insert. I hope the 'S' head will take more abuse....
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Burning the valve isnt going to be corrected with the r53 Head.. the reason the valve burned will still be an issue.
Installing the r53 head will replace the burnt valve and also the insert. The r53 heads are the same as r50, with the exception being the r53 Valves are of a different quality to take the BOOSTED pressures and heat. So that will be a plus!!
Have fun..(LOL)
Just saying.............................
Thumper -
RallyMini370 Well-Known Member
The reason I got the S head was for the better exhaust valve....plus it was cheap!
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Looks like the seed for the damage may have been a nick from the cutting tool.
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