Author Topic: Andys CB810 K2 -updated 14 Oct 2024 - missing link! (Read 92638 times)

andy750 · « **Reply #275 on:** July 23, 2020, 06:03:03 PM »

So I opened up the K2 carbs tonight and found a few issues...evidence of brass-aluminum corrosion, and carb #3 had a bent float - probably explain why it was the cold cylinder at start up - surprised it wasn’t overflowing at idle. See pics below...

#2

The broken pilot jet

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andy750 · « **Reply #276 on:** July 23, 2020, 06:14:10 PM »

Explains the #3 plug...that I checked previously

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jaytee-nz · « **Reply #277 on:** July 23, 2020, 09:58:22 PM »

I might be seeing things, but the pilot jet on the right hand carb looks bent to me ?

andy750 · « **Reply #278 on:** July 24, 2020, 03:28:45 AM »

Quote from: jaytee-nz on July 23, 2020, 09:58:22 PM

I might be seeing things, but the pilot jet on the right hand carb looks bent to me ?

Never noticed that...Ill take a closer look and let you know!

MRieck · « **Reply #279 on:** July 24, 2020, 05:27:44 AM »

That pilot jet does look bent. Were you playing soccer with those carbs Andy??

andy750 · « **Reply #280 on:** July 24, 2020, 06:31:53 AM »

Quote from: MRieck on July 24, 2020, 05:27:44 AM

That pilot jet does look bent. Were you playing soccer with those carbs Andy??

Never touched them!

I may need your help though in extracting the broken one

$:-\$

I have a spare set of carbs that I am hoping to install tonight and test ride tomorrow morning so will update here with progress.

PeWe · « **Reply #281 on:** July 24, 2020, 07:28:08 AM »

If the bent looking jet really is bent, the broken jet might have been bent too. Can be why it broke.
Remove the other jets very slow. No quick twist.

Edit: Buy Keihin jets.

andy750 · « **Reply #282 on:** July 24, 2020, 05:58:03 PM »

Ok so...the pilot jet was not bent...optical illusion I think - see pics

All four carbs

Pilot jet on the right looks straight to me

Close up

Arrow points to jet in question

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andy750 · « **Reply #283 on:** July 24, 2020, 06:04:15 PM »

Switched the carbs and success!!! - no leaks on start up and test ride showed what I have been missing these last few months - snappy throttle, growl of the HM300s, fast acceleration - got it up to speed on the highway and was not disappointed. Smiling again!! Can’t wait for the next ride

Thanks for all the comments they really motivated me.

Post-highway ride

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Alan F. · « **Reply #284 on:** July 24, 2020, 07:45:49 PM »

Good news Andy!

PeWe · « **Reply #285 on:** July 24, 2020, 10:50:39 PM »

Quickly done too!

knowsnothing · « **Reply #286 on:** July 28, 2020, 01:26:23 PM »

Nice work young Andrew

andy750 · « **Reply #287 on:** July 28, 2020, 06:19:49 PM »

Thank you Treeve! I was over in your neck of the woods on Saturday morning at 8am....did the Blue Hills-Wollaston Beach loop from mine and back to test ride the K2. Passed with flying colours! Next time Ill shoot you a text before I head over. I was back home by 8:30 before the heat hit.

How is your bike coming along? Running yet? Need any parts?

knowsnothing · « **Reply #288 on:** July 29, 2020, 11:45:57 AM »

Quote from: andy750 on July 28, 2020, 06:19:49 PM

Thank you Treeve! I was over in your neck of the woods on Saturday morning at 8am....did the Blue Hills-Wollaston Beach loop from mine and back to test ride the K2. Passed with flying colours! Next time Ill shoot you a text before I head over. I was back home by 8:30 before the heat hit.

How is your bike coming along? Running yet? Need any parts?

Let me know next time for sure.

The bike is finally running. I still need to finish the tank and seat, but I have a stock tank and seat on it for now so I can get a few miles on it while i finish.

Right now i am working on tuning. It has a hanging idle issue I think is likely due to a lean condition, so I am working on that. Still need to open it up on a highway, but its nice and peppy so far. I am just pumped it didn't grenade on first start up since i did do most of the work

.

RAFster122s · « **Reply #289 on:** July 29, 2020, 07:57:55 PM »

Are the felts on the throttle shafts lubed? That can cause a slow return to idle.

Stev-o · « **Reply #290 on:** July 31, 2020, 07:12:57 AM »

Looks good Andy!

andy750 · « **Reply #291 on:** July 31, 2020, 06:41:12 PM »

Quote from: Stev-o on July 31, 2020, 07:12:57 AM

Looks good Andy!

Thank you! Big relief getting it back on the road. Now thinking about tires - what do you like? I always buy BT45 but feel like a change for this bike

Alan F. · « **Reply #292 on:** July 31, 2020, 07:11:21 PM »

BT-46 is available, I haven't heard any ride reports though.

RAFster122s · « **Reply #293 on:** July 31, 2020, 09:46:30 PM »

Someone recently mentioned putting a new BT-46 on the rear of their CB. Do not recall whom. Would a Google search find reference to BT-46?

Kevin D · « **Reply #294 on:** August 01, 2020, 03:10:31 AM »

https://grippingstories.com/articles/2019/battlax-bt46-the-new-reference-bias-touring-tyre

BT46: wet road performance improved about 10% by modification/enhancement of sipe design.
At least, that’s the Bridgestone pitch.
UM application, tube or tubeless.

PeWe · « **Reply #295 on:** August 01, 2020, 07:05:14 AM »

Rear with longer life would be fine. Over 4000 miles with some inspired accelerations.

MRieck · « **Reply #296 on:** August 01, 2020, 08:09:13 AM »

Happy to say the broken pilot jet has been extracted and Andy should have the carbs back very soon.

PeWe · « **Reply #297 on:** August 01, 2020, 09:47:44 AM »

Golden boy to live that close to a superb support, huge knowledge and fantastic craftsmanship!
Good friend too!

andy750 · « **Reply #298 on:** August 01, 2020, 01:56:00 PM »

Quote from: PeWe on August 01, 2020, 09:47:44 AM

Golden boy to live that close to a superb support, huge knowledge and fantastic craftsmanship!
Good friend too!

Very well said Per and couldn’t agree more. I first met Mike about 15 years ago through the forum and it has been an honour to know him.

andy750 · « **Reply #299 on:** August 01, 2020, 01:56:46 PM »

Quote from: MRieck on August 01, 2020, 08:09:13 AM

Happy to say the broken pilot jet has been extracted and Andy should have the carbs back very soon.

Thank you Mike!!!!

News:

Author Topic: Andys CB810 K2 -updated 14 Oct 2024 - missing link! (Read 92638 times)