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Search: Posts Made By: jkv357
Forum: CBR250 New Member Introductions   Today, 12:14 PM
Replies: 5
Views: 118
Posted By jkv357
OP hasn't been back since his first post...

OP hasn't been back since his first post...
Forum: CBR250 Performance   01-17-2020, 02:32 PM
Replies: 3
Views: 59
Posted By jkv357
In dyno tests I've seen, there have been...

In dyno tests I've seen, there have been instances where not running a baffle will produce less power.

You can try it without, but most single-cylinder engines just don't sound that good when the...
Forum: Honda CBR250 General Discussion   01-13-2020, 02:59 PM
Replies: 14
Views: 450
Posted By jkv357
Maybe I should have called it "a happy medium for...

Maybe I should have called it "a happy medium for the average driver" then.

A cycle engine with a small oil capacity puts much more strain on oil than an auto engine, but if saving a coupe bucks...
Forum: CBR250 Problems and Issues   01-12-2020, 11:07 AM
Replies: 14
Views: 286
Posted By jkv357
If all else is good, I don't see how it could...

If all else is good, I don't see how it could need valve guides replaced.

New Cam Chain Tensioner or valve clearance adjustment may cure the top-end noise problem IMO.

Plug is exact stock...
Forum: CBR250 Problems and Issues   01-09-2020, 04:44 PM
Replies: 14
Views: 286
Posted By jkv357
I'm not sure how they got worn valve guides out...

I'm not sure how they got worn valve guides out of that.

As far as the top-end noise, the cam chain tensioner and cam chain guides might be something I would look into, in addition to confirming...
Forum: CBR250 Problems and Issues   01-09-2020, 10:11 AM
Replies: 14
Views: 286
Posted By jkv357
Can you describe it in more detail? Not sure...

Can you describe it in more detail?

Not sure how they came up with that diagnosis, but there are other things that could cause what you described.

Did they tell you anything about how they...
Forum: CBR250 Problems and Issues   01-08-2020, 12:37 PM
Replies: 14
Views: 286
Posted By jkv357
Can you tell us the symptoms that drew them to...

Can you tell us the symptoms that drew them to the conclusion that the valve guides were bad?
Forum: CBR250 Problems and Issues   01-05-2020, 11:41 AM
Replies: 14
Views: 286
Posted By jkv357
It would be very unusual to have to replace valve...

It would be very unusual to have to replace valve guides at that point.

What are the symptoms you are experiencing that led you to take it in?

I'd be very surprised if worn valve guides were...
Forum: CBR250 Problems and Issues   01-04-2020, 09:35 PM
Replies: 14
Views: 286
Posted By jkv357
What year? How many miles? It would be odd...

What year? How many miles?

It would be odd to have the guides wear out with any reasonable miles on the engine. The valve seals will usually wear first and allow oil to run down the valve and...
Forum: Honda CBR250 General Discussion   12-23-2019, 11:14 AM
Replies: 2
Views: 192
Posted By jkv357
You could run into some unexpected challenges...

You could run into some unexpected challenges with the 300 in the 250 chassis. It depends if you are up for the challenge.

Don't rebuild the engine - buy a decent used one. The 250 will be less...
Forum: CBR250 New Member Introductions   12-21-2019, 05:42 PM
Replies: 5
Views: 118
Posted By jkv357
Did you use the exact same plug? Can you...

Did you use the exact same plug?

Can you check the battery voltage with a volt meter? Before starting it should be 12.7V or more. Confirm you have proper voltage and secure connections.

Other...
Forum: Honda CBR250 General Discussion   12-10-2019, 10:14 AM
Replies: 14
Views: 450
Posted By jkv357
You can't really compare cycle engines to auto...

You can't really compare cycle engines to auto engines when it comes to demands on oil.

10,000 mi is also way too much for an oil change in an auto under most conditions. The exception is short...
Forum: Honda CBR250 General Discussion   12-09-2019, 12:50 PM
Replies: 14
Views: 450
Posted By jkv357
Not when you are dealing with less than 2 qts of...

Not when you are dealing with less than 2 qts of oil. 8000 km is equal to about 5000 mi - which is too much for that small amount of oil in a motorcycle engine. Cycle transmissions are hard on oil,...
Forum: Honda CBR250 General Discussion   12-08-2019, 03:31 PM
Replies: 14
Views: 450
Posted By jkv357
I could see going for two 4000 km changes, but...

I could see going for two 4000 km changes, but that's about it.

The factory oil change schedule is too long IMO, considering the small volume of oil.
Forum: Other Honda Motorcycles   12-04-2019, 10:05 AM
Replies: 20
Views: 1,363
Posted By jkv357
Piston came yesterday - ...

Piston came yesterday -

https://i.imgur.com/GoyqShZ.jpg?1

Hopefully have it together this weekend.
Forum: Other Honda Motorcycles   12-02-2019, 10:39 AM
Replies: 20
Views: 1,363
Posted By jkv357
More than halfway there - ...

More than halfway there -

https://i.imgur.com/ZAfjUIL.jpg
Forum: Other Honda Motorcycles   11-25-2019, 10:58 AM
Replies: 20
Views: 1,363
Posted By jkv357
Current state of the CRF's engine - ...

Current state of the CRF's engine -

https://i.imgur.com/Yn24UD8.jpg

Ready to install a new crank and high compression piston. Cam and bore look great. Crank replacement is more preventative...
Forum: CBR250 Problems and Issues   11-22-2019, 12:17 PM
Replies: 4
Views: 159
Posted By jkv357
Pretty sure you can check the TPS, and set it per...

Pretty sure you can check the TPS, and set it per spec, with an Ohm meter.

That would be the first thing to try. If it's bad I would think you wouldn't be able to get it set properly.

I would...
Forum: CBR250 Problems and Issues   11-22-2019, 10:25 AM
Replies: 4
Views: 159
Posted By jkv357
What are the symptoms you are experiencing, and...

What are the symptoms you are experiencing, and what leads you to think the TPS is the cause?
Forum: CBR250 New Member Introductions   11-22-2019, 10:13 AM
Replies: 9
Views: 142
Posted By jkv357
If maintained properly you shouldn't need the...

If maintained properly you shouldn't need the extended warranty.

Change the oil frequently. Use good oil. Be VERY careful when installing the oil filter. If installed incorrectly (backwards) it...
Forum: CBR250 New Member Introductions   11-20-2019, 02:47 PM
Replies: 9
Views: 142
Posted By jkv357
I wouldn't be concerned with time/dates so much...

I wouldn't be concerned with time/dates so much as miles/Km.

One reason they say to wait for a certain amount of miles/Km is to let things settle - like cables stretching, valves seating, etc....
Forum: CBR250 New Member Introductions   11-14-2019, 10:16 AM
Replies: 4
Views: 102
Posted By jkv357
Not sure on the specifics of the system. See...

Not sure on the specifics of the system.

See if you can find a wiring diagram and identify the components, wires, and path. A factory Honda Service Manual may have useful info also.

Something...
Forum: CBR250 New Member Introductions   11-13-2019, 01:35 PM
Replies: 4
Views: 102
Posted By jkv357
Honda Service Center couldn't help you and sent...

Honda Service Center couldn't help you and sent you on your way?

Sounds like they checked everything except the temp sensor.
Forum: Proficient Motorcycling: Riding Tips & Techniques   10-31-2019, 10:53 AM
Replies: 20
Views: 703
Posted By jkv357
Lets see... No shifting...tiny wheels and...

Lets see...

No shifting...tiny wheels and brakes...step-through...

It's not a motorcycle. Fine for a pit bike. I like small motorcycles, but scooters suck.
Forum: Proficient Motorcycling: Riding Tips & Techniques   10-29-2019, 10:22 AM
Replies: 20
Views: 703
Posted By jkv357
No scooters!!!! Ever!

No scooters!!!!

Ever!
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