Ask Tim
Email: mw.ed@kelsey.co.uk
Post: MiniWorld Q&A, Kelsey Publishing Ltd, The Granary, Downs Court, Yalding Hill, Yalding, Kent, ME18 6AL, UK
Tim Mundy has worked on Minis since the age of 13. In the 1990s he worked for Oselli Engineering and has been writing for MiniWorld for 26 years. He has owned more than 20 Minis and built two from scratch.
Fast road injection
I am currently having a full rebuild carried out on my SPi Mini engine and gearbox. The engine is being rebored to 1293cc and fitted with a Stage 2 modified head. I think I would like to upgrade the cam. Is it worth doing this or should I fit high-lift rockers?
Dave Francis
It is certainly worthwhile upgrading the cam, particularly as the engine is currently out of the car and being fully rebuilt; high-lift rockers at this level of tune are ideal when the engine is not being removed. Fit a cam such as the Kent MD274SP single-point injection cam which has been produced for the SPi engine, preferably together with Vernier timing gears so that the cam can be accurately timed in. The Kent cam will provide a very reasonable power increase, excellent torque
