Steve, go for it mate I just happened to have a bit of 25x25x3mm ally angle lying about, so thats what I used
Needs a good polish tho' The coolers from BSR,13 row, just right in hot weather, but to efficient in winter

Must admit, I had CB 900 F ( '81) for a while, in 1995 Not too bad a bike, got it cheap, whacked a Laser pipe on it, ripped all the useless bits of it (indicators, mirrors, rear mudguard, etc) & thrashed it for 6 months. Flogged it for what I paid, with a knackered clutch

Steve, Emailed you some photos mate!

If all else is OK (carbs clean & balanced, timing, valve clearances, plugs & leads, good manifold rubbers, etc) worn carbs are probably to blame :!: Back in the early 80's my old A4 used to be bad pulling away and used to stall regularly, unless you gave her a good bit of throttle :shock: Th...

Ahhhh, OK, is it better when air screw is wound out 2 x or more

THERE YOU GO, HEAD HONCHO HAS SPOKEN

Jerry, what PRIZES

This stutter just off idle is NOT uncommon. :? Assume carbs are nice & clean & float heights, etc are OK :!: U got standard air box? The 4:1 will effect it a bit. Just winding in the air screw a 1/4 turn should not make plugs sooty? This will only effect 0 - low throttle opening as u obvious...

SMR610, for about ?200 you could pick up a second hand set of Mikuni RS36's which are much better, easier to tune & add to the performance
CV carbs can be a nightmare to sort even with a 'jet kit'.

VDUK, sorry, but, if its blue smoke, that points to OIL mate, not RICH mix

That looks sweet :wink:

Got mine too, CHEERS, nice glossy leaflet

YOU GUYS ARE ON ANOTHER PLANET, WELL DONE FOR LIVENING UP THIS PART OF THE FORUM TO THOSE WHO DON'T LIKE MODDED BIKES
HOPE THE OTHER CHAPS ARE TAKING NOTE, STANDARDS GOOD, BUT THIS IS THE DOGS *******
DON'T KNOW WHERE YOU LOT GET THE DOSH FROM

Helicoil?
OR, weld & re-tap
OR, drill out & tap extra big, 12 or 14mm (if room?) then drill & tap out a short length of 12/14mm stud to suit your nice new s/s bolt!


PS, Bodging is a true Old Skool Art form

Any decent engineering shop can weld it & then tap it out, but its head-off time by the sound of it

Try & google for heat resistant repair compound, there must be something available in this day-and-age Some of those instant metals are good

Even with the Wiseco & a 4:1, standard jetting won't be too far off :!: If its running rich, she shouldn't take long to warm up & run without choke :?: Clean out the airbox & filter, probably full of GTX :? :idea: Try running with filter out to see wot happens, better or worserer :?: