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

Cam lobes can be drilled for extra lubrification (on request, on steel billet cams)

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