Nick U

Joined:
2009-06-04 05:03:16

Posts: 3

Posted:Thursday 08 October, 2009 6:02 PM

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Subject: Advice on '70 K2 carbs? - Jetting/Tuning/Air Filters

Hey everyone,

So I'm rebuilding the carbs and the fuel petcock on my '70 K2. The kits I ordered came with 115 jets, and the ones in my carbs now are 105's. How much richer can I expect the bike to run with that increase in jet size? I'm only just getting familiar with carbs.

I'm not sure what to do and was looking for some advice. I plan to install the 115's and take the bike for about a 20 mile ride. I'll pull the plugs out and see how she's running. If it's running pretty rich, what can I do to compensate? I'm running stock air filters right now, if it turns out that it's running very rich, should I get a set of pods?

I don't really know how to tune the carbs once everything is put back together. Can anyone offer advice on that as well?

Any information regarding the carbs and tuning will be greatly appreciated, thanks a lot guys!

Nick

Nick U

Joined:
2009-06-04 05:03:16

Posts: 3

Posted:Sunday 11 October, 2009 6:34 PM

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Subject: Re: Advice on '70 K2 carbs? - Jetting/Tuning/Air Filters

That's good to know, I wonder why there were 105's in there then. Everything's been reassembled, had the bike running this morning but I noticed that spark is jumping through the side of one of the spark plug caps.

The carbs are cv type. I've got the tuning process down now (forgot all about my manual) just needs some tinkering which will have to wait until I get new caps.

Before rebuilding the carbs and petcock the bike would only run with the choke closed. Now it will only run with it open, even when starting. Is that something I need to worry about or can I leave it be?

I was also wondering if anyone knows what kind of pipes these are? I still haven't come across another cb with them. They sound alright, but they're a bit obnoxious.