Morris Minor Owners Club

I'm contemplating fitting AC Dodds RT cam to my 1098, with 12G940 head ( machined recessed exhaust valves 30thou), HIF 38 and Maniflow inlet and exhaust manifolds. The new cam is a slot drive as a new billet product.
Since the engine runs so sweetly I'm hoping not to pull it out but just to change cam and followers with engine in situ.
TWO questions:
1) is the standard 1098 cam slot or pin drive?
2) is standard timing chain/gear sufficient to time the cam in properly or would a vernier set up or offset key be recommended?
The car is for fast ( ish) road use!
Thank you

The standard 1098cc drive to the oil pump is pin drive so if you fit the cam mentioned you will need a slot drive oil pump (engine out unfortunately).
The standard Minor timing chain set up with rubber tensioning rings is not suitable for sports/fast road specification camshafts therefore I would use a non adjustable duplex timing gear unless you want to extract every last bit of power gain from the parts used.
I am not an advocate of offset keys (and you may need to try several different offsets to get it right) as the cross section of metal in the offset key is reduced the more offset is used - so if you do need to time the cam as per the manufactures specification an adjustable duplex is the way to go but of course at greater cost.
What ever and however you time the cam that is only the base setting and will need setting up properly on a rolling road or after extensive road testing.
Phil

That RT cam (or indeed any of ACD's cams) is NOT SUITABLE for a 1098 with 940 head! It has too much lift. The sinking of the valves copes fine with standard lift cams- but NOT with high lift cams such as this. This is why the MG Metro cam is ideal, since the lift is not increased. But - in fact - the standard 1098 camshaft works very well with the 940 headed 1098. Because the valves are so much bigger - there is no need to lift them higher or for longer, and you can't go over 6000rpm anyway -unless you fancy a broken crankshaft.... I also strongly advise a crankshaft damper be fitted to any hard driven 1098 - and ideally a duplex chain conversion although not essential - appears these days to cost less than using the single chain parts - so may as well go for the better set-up.