- Joined
- Nov 4, 2007
- Messages
- 1,362
Hi, here is my question, Yves Seeley, had sold me his old (but nice !!) JS2 cam, which will be fit in a 850 engine , the alloy cylinder will sleeved by Pete Lovell,and I will put some Emgo std pistons , should I cut some notches in the pistons due to the increased valve lift (0.040 ish more than stock), in the same way , I will have only the std CR which is pretty low (8.4 to 8.7 according to the commonly found value), so must I increase it ( by reducing cylinder height by 0.040 thou, quite easy when Pete will machine the jug!!), or just put a thinner head gasket to gain 1/2 point (minus 0.020 gasket)............????? your clever thoughts will be welcome!