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M13A Camshaft / Valve Timing

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10 Aug 2025 06:05 #261567 by Hughes
Does anyone know Camshaft / valve timing specs for the M13A engine? Especially exhaust.
Tried searching myself but came up blank. 

Basically considering welding up my own custom extractors and need valve timing etc. for calculations.

Removing the valve cover and physically measuring seems a faff so I might just buy some off the shelf ones if I can't find any specs. 

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14 Aug 2025 05:27 #261618 by Hughes
Replied by Hughes on topic M13A Camshaft / Valve Timing
I didn't think I'd have much luck... 

Failing that, does anyone have a good recommendation off the shelf for headers / extractors? 

Not worried about the loss of the cat, in fact that's partly why I want headers. 

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