rperacing wrote:I did not read the whole thread but I am familiar with the bike. We built it after all.
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I wasn't around when thread was going and dont want to reignite the fire as "the customer is always right". In his defense that bike, on that day on that dyno put out that horsepower. Do I believe the number - no.
Still damn proud of it though. Shame there isn't much competition about. We have got a something special in the pipeline, just in case.
A rather old thread now, but having read through this and the 225 hp thread, there is still an unanswered question in my mind:-
How much bigger can you go without having to bore the cases?
The original liners are apparently 71mm OD, but if I recall correctly they're not a tight fit in the cases. So how big a liner can you use before having to bore out the cases?
I built a CBX engine many years ago with some parts HRC (or might have been RSC then) produced when they thought a CBX could be used for racing. There was a 999 kit to suit a 1000cc capacity limit, a 1200 kit and a 1350 (I think) kit. There were cams and rods, but not all kits used the latter. For the life of me now I cannot remember whether I had the 1200 or 1350 barrel. I do remember that it used the same pistons as the 4 cylinder F1 race bikes of the time. These were based on the 750 rather then the 900 for its shorter stroke and the pistons would have been about 71.5 and I would have had the 1200 kit barrel, but I cannot remember the exact specifics. However, I'm sure I didn't have to bore out the crankcases.
So as the builder of the big CBXs mentioned in this thread, perhaps rperacing could confirm just how big is the opening in the cases and so what size liners can be fitted to stock cases.