24-01-2020, 07:51 PM
Hi geoffharrison
Ricardos book is a good read free of the fancy calculus and the like which places so many modern texts beyond the casual amateur. By modern standards the early rules of thumb for sizing componets are somewhat amusing. The several editions vary considerably and the later are more an account of his work, esp the peculiarly UK notion of the single sleeve engine. Unfortunately the BA types who control libraries dump such books so becoming hard to find. Ricardos auto biagraphy published under a couple of titles is also very readable.
Before learning there was an afteremrket one with the name I always referred to the 37 head as Ricardo as it so obviously is.
On the topic of head breathing I often wonder if the 4.9:1 RN produces more bhp than the more constricted 5.2 RP as original road tests and current owners seem to report better performance despite updraught carb.
Ricardos book is a good read free of the fancy calculus and the like which places so many modern texts beyond the casual amateur. By modern standards the early rules of thumb for sizing componets are somewhat amusing. The several editions vary considerably and the later are more an account of his work, esp the peculiarly UK notion of the single sleeve engine. Unfortunately the BA types who control libraries dump such books so becoming hard to find. Ricardos auto biagraphy published under a couple of titles is also very readable.
Before learning there was an afteremrket one with the name I always referred to the 37 head as Ricardo as it so obviously is.
On the topic of head breathing I often wonder if the 4.9:1 RN produces more bhp than the more constricted 5.2 RP as original road tests and current owners seem to report better performance despite updraught carb.