tarmac rally - race

Volkswagen hydraulic tappets, 8mm valves, MK-8H

I-4cyl 1.8L 8v SOHC (DTH/DTH)

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if required, use extra shims to increase spring load

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use PAC-D12009 (GOLD quality) for applications over 12.5mm valve lift / 8500rpm

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to use these camshafts in cylinderheads with hydraulic followers in O.E.M. version:

- change hydraulic followers for mechanical tappets (ref. CC005)

- use cam base circle diameter of maximum 34mm (SPECIFY WHEN ORDERING)

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FOR COMPETITION APPLICATIONS ONLY. Following details must be verified:

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the camshafs must turn smooth in the cylinderhead, provide free travel by machining where needed

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distance between valve seal and retainer at full lift must be 0.6mm at least

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minimum valve spring travel of 1.0mm at full lift must be provided

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distance between valve and piston 1.0mm (pref. 1.5mm). check 5-15° before TDC on exhaust, and after TDC on intake

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ONLY for use in competition engines with independent engine management (throttle position sensor) or carburettors