hot street - dirt track

Bmw M10 B18 105hp

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

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original valve spring info is not available

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larger excenter discs (part number "99019" - D18mm) available to adjust valve clearance for camshafts with reduced cam base diameter

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Cat Cams steel billet rocker arms (part number "CAT021") are strongly advised for use over 7000rpm

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Please use the correct part number code for your engine:

- 13001xx: small bearing (42.95mm-41.95mm-34.95mm), right gear

- 13002xx: small bearing (42.95mm-41.95mm-34.95mm), left gear

- 13021xx: big bearing (44.95mm-43.95mm-34.95mm), right gear

- 13022xx: big bearing (44.95mm-43.95mm-34.95mm), left gear

Difference between left and right gear

The cams are drilled for extra lubrication. The internal lubrication can be sealed with an M3 Allen screw in the first bearing.

NOW AVAILABLE: CATCAMS steel billet rocker arms (coated) with original Mahle valve adjustment screws !!!

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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 dirt track applications and pro street use with adjustable engine management or carburettors

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We have two types of adjustable cam sprockets available:

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TBM010: single chain

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TBM012: double chain