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Old 08-08-2012, 08:36 AM
maurtis's Avatar
maurtis maurtis is offline
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Location: Kyle, TX
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Default Re: Anyone tried this wider port China Girl?

Originally Posted by Nashville Kat View Post
maurtis- I read your thread- interesting- but you never reported how it ran!

I would think the bigger intake and matched port would do quite a lot. Is it the newer 66 Speed carb?

Sounds like you are wanting better carburetion?

So yours has the wider spacing but still the smaller motor mounts?
Thanks for the reminder Kat, I hate it when people do not update their threads! Whoops... I went ahead and wrote a quick update. The motor is running great, but only have about 400 miles on her since I do not ride as much as I would like.

I have the regular NT carb that came with the kit. The carburetion right now is pretty good, throttle response is good, only four strokes at WOT right after start up, idles well. The only reason I would want to go with a different setup is more power. And I saw a video of someone running the RT and it idled REALLY low, which was crazy... Since she is running well now, though, that will be a while. For once, I am tired of tinkering every weekend! I will certainly try just a new shorty manifold first, though.

So of course, the plans for the weekend are to install a centrifugal clutch... wait, what? Didn't I just say I was tired of tinkering? Yeah...

We also just picked up a Thunder Kart for my son that has been sitting outside for about a decade, so trying to bring that back to life. I keep eyeballing that 5HP Briggs. Something tells me an HT powered go kart would not run very well...

Last edited by maurtis; 08-08-2012 at 03:44 PM.
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Old 08-08-2012, 05:00 PM
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Nashville Kat Nashville Kat is offline
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Location: Jacksonville, Florida
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Default Re: Anyone tried this wider port China Girl?

I can only relate what I've tried and heard here- you'd probably get more power out of a NT Speed carb, and they seem to be more reliable with less tinkering- just judging from the many posts I see about CNS or others. Of course, someone who knows what they are doing there may disagree- but still they've had several generations of them. I've seen videos on youtube though and they can really scream- I wonder how well the motors last with that kind of revving.

The billet as well would probably give you more, whatever carb you choose- if the motor's fairly level- I have one at about 20 degrees tilt with a Speed carb and it doesn't seem to detract from the run.

I'm getting an easy 25, and a solid 30 out of my 66- above that I think the motor sounds over-revved a bit- would probably go 35 maybe a bit over- I don't need to and in my late 50's I don;t want to fall or crash- 34 sprock, with Speed and billet- and the analogue speedo may run an mph or two slow with the 27" wheels. But it runs and runs and very smooth.
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