Anyone know the valve clearance for a Vauxhall Chevette HS 2300 Twin Cam engine & a clue how to adjust them if poss
{Moved from a reply to a 4 yr old thread and subject header re-titled - DD}
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inlet 25 thou hot
exhaust 45 hot
suggest if you dont know how to do them you get a man that can
this car is iconic status now if a proper homogonised one
please dont put a cd player in the dash either
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I can do cars... I just wondered if there is anything special about these.. don't worry no CD player
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Last time I did anything like this was on a single cam 1800 Vauxhall Magnum. Your car sounds of similar vintage so may have the same system. The adjustment was via a small allen screw in the side of the cam follower. IIRC the screw had a squared off tapered end and screwing it in a click (90 degrees?) at a time reduced the clearance and vice versa. Blowed if I can recall the clearances though.
JS
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I think there is a haynes manual that covers this engine. the viva magnum ?
or at least I think its the one fitted to the magnum and the panther lima.
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Lotus developed the alloy twin-cam head for GM to use with their slant-four iron-block engine in homologated competition. It's this engine in the Chevette HS, not the ordinary single cam slant-four in the Viva/Magnum.
Lotus later used the same head and built their own alloy-block slant-four using the same cylinder centre spacing as the GM iron-block engine. This went into Elite, Esprit etc.
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my settings are wrong then
i never knew that
thanks RT
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Respect for owning a beast I always wanted !
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JS,
Having done many of these single OHC slanted engine units in my apprenticeship at a Vauxhall dealer, each rotation of the allen screw = 3 thou. I still have the tool - an allen key on a long flexi with a 'T' bar built onto the end. Its still in my toolbox unused for many a year now!!
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These are the views of Robin the Technician with 35 years in the trade. I fix, therefore I am...
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But it's not a single OHC slanted GM engine, it's a twin-cam Lotus head using the GM block.
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Is Bill Blydestein still working to suppliment his pension?
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I've had a look on Piper and Kent cams websites and they only list modern stuff. maybe if you rang them they could help you?
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