I recently fitted a Piper Camshaft Kit KBV 13270H to my Vauxhall Corsa 1.2 8 Valve C12 NZ engine 1994. I fitted new Valve Springs and lapped in the Valves.
After fitting the Cylinder head I aligned the timing marks as stated in the manual and fitted a new cambelt.
The problem I am experiencing is a uneven idle and stalling and also a very bad flatspot when you pull away and up to approx 3000rpm then the engine appears to respond slightly better than the original camshaft.
Before we changed to the Piper camshaft the engine performed well and we hoped to see a performance gain, but this is not the case.
Could you possibly tell me if you still align the timing marks as standard or do you have to adjust it to a different position when you fit the Piper camshaft. i think i need to use a timing disc but i dont have one with the cam as it was 2nd hand.
Any info would be very appreciated.