Thanks Lewis.
Pump is in and solved the fuelling problem. It felt much stronger with that done and even before raising the 8k rev limit it was making about 8-10bhp more at the wheels in our rollers at 7500rpm with the right fuelling. Raised the limit as far as I'm prepared to take it (for longevity) and it still head butts the limiter. It feels truly epic now, blatantly more grunt than the chassis can handle in the lower gears and I'm very pleased with it.
It's on a standard 1.6 crank (without any of the worrying counterweight removal I've seen some people doing!) and overbored with slightly oversize valves, but still on original inserts which tells you they aren't as big as some people are using! I'm not going to be specific about dimensions I'm afraid, I don't want to fill in the missing pieces for my competitors. It's a package I've evolved over several years and I'm quite protective of the details
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