Chris - are you saying you think the B200K was mis-tuned from the factory? If so, I've got some O RLY coming your way

Either way, I'd be interested to hear what you have planned!

cheers

James

Well, it's the only carb I've every seen with the second venturi's jet is smaller than the primary, but nah, PTF wasn't tuned properly when Mick get her, I'm not even sure we checked the jet sizing against the book values now, it was a long time ago, and we prolly did. It was running shocking though, getting 30ish to a run at best at one point.

Theres a difference between mistuned and de-tuned

Well....I was going to say that mine always ran niiicely

cheers

James

It's alive!

Finally got it all back together this afternoon and took it for a test drive. It's running really lumpy whenever it's not under power, although it's fine when you put your foot down

I thought this might be due to the carb setup, but Chris reckons this is ignition timing, and can only be adjusted by changing the renix to match the cam. Has anyone got any other ideas, or a spare GLT renix I could try?

Nick

Quick recap... for those like me who don't flick back through the topic, Nick's running a GLT "A" cam on stock carb.

I reckon the lumpyness is from ignition timing at low revs, and a GLT renix would cure it. Then again, we all know how much I know

Its neither the carb or the timing. Well, not altogether anyway.. Its the cam it will run lumpier on the A cam than the Y or L or whatever's in the carb one.

A GLT Renix might have a higher ignition advance at idle than the GLE cam, but tbh I would change the cam over, its an easy fix and it'll make the jetting all correct again.

Well I thing it is timing in a way. when you put the cam in did you put the cam to the correct side of the timing mark? It should be set slightly to the right.