Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
Find somebody with a dyno and an interest in classic bikes and book a couple of hours dyno time.... well worth it for a non std set up, the only way to get it right. You wont find anybody who can tell you what jets to use over the internet, maybe some can give you a rough starting point but thats all. Good luck with it.
I'm not near Lincolnshire. But I am 1 mile away from Frank Wrathall. So maybe I'll see if I can book it in with him.But ultimately. All I want is the bike to be as pleasant as possible to ride, in its present form.
I had my 750 sohc dynoed a couple of years back, K6 engine we think!, fuelling was good above 3k revs but a bit lean below, I have a 4 into one (piper pipes and generic reverse cone silencer) and pod filters that I grafted onto the original velocity stacks from the Honda air box, I fitted 135 main jets and left the original pilot jets in, the dyno guy (Sam Ermolenko, google him) said at the time that the silencer was stifling it a bit, at the weekend during a bored moment I drilled some bigger holes in the baffle plate, the result?, it’s gone very lean, like white plug tips lean , oops!, so I just ordered some #40 pilots, this is with PD41A carbs by the way, now I know when I fit them that everything is going to be absolutely perfect and anyone saying different is just plain wrong , one thing I noticed when setting the float heights is that even if you set them carefully you get variance in the fuel levels across the carbs so I will be using the clear pipe on the drains method to make sure I get them all correct and the same, I have never removed pressed in pilot jets before, does anyone have any tips?, bit of heat?, pull with pliers?, new ones in the freezer before fitting?, all advice greatfully received:)Here’s mine on the dynohttps://youtu.be/dzyp3A1TQBY
Good luck with finding your bike's sweet spot. You're always at a compromise between power at full bananas and tractability, even at factory settings.As a dyno related aside, at Donington once I was asked to take Michael Rutter's RC45, which had just been fitted with a new factory engine, over to a mobile dyno in the paddock. I can't remember the hp, and at the time I wouldn't have been allowed to disclose it, but the sight and sound of an RC45 race bike at full tilt on the rollers certainly made the hairs stand up on the back of the neck. No ear defenders of course, by then it was too late, I'd already seen Quo and Black Sabbath live.