Ditto Scottly
If your running the oxy rich fuel on 120 mains ya gunna be running seriusly lean ...... with 750 displacement the AF get really sensitive and needs to be spot on or slightly rich. On my 750 on first dyno I stuffed up the jetting and it was between 14 and 15 to 1, flames popping out the exhaust,
Lost heap of HP with a new fresh build and it only pulled 67HP, big downer from the 80 I was hoping for
changed jets etc 2 runs and peaked at 79HP.......and that was on Sunaco avgas not the groovy stuff.......which would make a bigger difference etc. So Den, that's 2 votes for #$%* load more fuel. The old saying is better too much than not enough when your playing with oxy stuff.
Are you running titanium adjusting nuts ? I had big dramas with them and now back with stock.
Hope the weather holds Den and for an old fart like you its just another day in the office.👍🏁
cheers Johno
