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**Jon Niranjan Paul** · 10-21-2016, 08:17 PM

Re: Honda CBR 250R

Originally posted by Deathwing View Post

I'm at 25k ,didn't maintain my Chain the first 10k km soo if I did I spose it could be 30-40k easily , but I did cut 2 links off, I expect by next service will see if I need a chain sprocket set change for sure

How did you manage to cut links off the chain? AFAIK, the CBR chain is a closed one and doesnt have a master link

Cutting the chain IMO is not advisable and will harm your sprockets more. Change it before you plan to tour, as you will face serious power loss climbing inclines.

**Deathwing** · 10-21-2016, 08:21 PM

Re: Honda CBR 250R

Originally posted by Jon Niranjan Paul View Post

How did you manage to cut links off the chain? AFAIK, the CBR chain is a closed one and doesnt have a master link

Cutting the chain IMO is not advisable and will harm your sprockets more. Change it before you plan to tour, as you will face serious power loss climbing inclines.

I know what u mean, my chain kept hanging a lot soo had too, did get my chain checked, still has life, I avoid speed runs only did 130-140 once and avoid touring too till I get a new set. Right now personally chain feels fine and smooth, not facing any problems , I'm mostly below 7000rpm for a good part, I don't have plans to go on a long trip either soo yeah.

**Jon Niranjan Paul** · 10-21-2016, 09:58 PM

Re: Honda CBR 250R

Originally posted by Deathwing View Post

I know what u mean, my chain kept hanging a lot soo had too, did get my chain checked, still has life, I avoid speed runs only did 130-140 once and avoid touring too till I get a new set. Right now personally chain feels fine and smooth, not facing any problems , I'm mostly below 7000rpm for a good part, I don't have plans to go on a long trip either soo yeah.

Cool! The chain doesnt usually show signs of wear. Check the teeth of the sprockets, if they are unevenly ground, it means that the sprockets are gone, hence would result in chain slack. Attaching a pic from google for reference.

The sprocket on the right is kaput.

**leech** · 10-21-2016, 10:28 PM

Re: Honda CBR 250R

Rode the bike to SVC, and the mechanic tells me the front Pistons are stuck. He couldn't move them even after spraying lube. He wants to replace them along with the rings. Costs ₹320 for both Pistons and rings.

Rear wheel bearings are shot. Around ₹900 for both bearings. ₹23 for wheel damper.

Total would come around 3.4k including front brake pads which lasted 12k kms only, probably due to the jammed piston. I suspect that piston was responsible for the front wheel lockup which I experienced, as well as poor life - 12k kms of the front brake pads.

**s1d** · 10-21-2016, 10:47 PM

Re: Honda CBR 250R

Originally posted by leech View Post

Rode the bike to SVC, and the mechanic tells me the front Pistons are stuck. He couldn't move them even after spraying lube. He wants to replace them along with the rings. Costs ₹320 for both Pistons and rings.

Rear wheel bearings are shot. Around ₹900 for both bearings. ₹23 for wheel damper.

Total would come around 3.4k including front brake pads which lasted 12k kms only, probably due to the jammed piston. I suspect that piston was responsible for the front wheel lockup which I experienced, as well as poor life - 12k kms of the front brake pads.

Make sure you are around while they do the repairs.. if a piston is jammed, it can be removed with some effort and cleaned and put back with new seals. But if a new piston/seal kit is only 320rs, might as well get them and make sure the new ones go in. And replace the entire brake fluid while you are at it.

**leech** · 10-21-2016, 11:33 PM

Re: Honda CBR 250R

Yes, they replaced the fluid too. And charged me 700 bucks labor for the whole work - 350 for greasing, 250 labour charge!

**B7ACKTHORN** · 10-22-2016, 05:19 AM

Re: Honda CBR 250R

Originally posted by leech View Post

Thanks, but this clip wasn't there on the rear brakes, when I changed those pads. Is that normal?

Completely normal. The clips/springs are there to arrest pad chatter nothing more. It's a small yet significant thing that reduces brake pad jingling around their seats. All calipers have clips in them, some are visible and some aren't. These are in fact called springs or springs cum anti judder. Install it back in the right direction, it helps pad seat in their place and in turn increases braking efficiency.

Originally posted by Mern View Post

Hello experts,

I own a 2011 Honda CBR 250r (ABS).

I have been facing Shim problems for quite a while and as such haven't been able to ride my bike as much as I would like to.

I had given my bike to the service center twice (Shanti Honda, Pune), however the issue has still not been resolved.

I now would prefer a local mechanic who is passionate about bikes and really does fix the problem. However, I have no knowledge of any such mechanic in Pune.

Can you please suggest a good mechanic who can get the shim problem on my bike fixed for good?

Thank you all.

Shim job would require an expert hand. Roam the city if you have to, find a good SVC or find a mechanic who deals with superbikes, they can surely help you out. DO NOT trust the local mechanics with a shim job. It requires precise measurement of replacement shims, proper head job.

Originally posted by Deathwing View Post

I'm at 25k ,didn't maintain my Chain the first 10k km soo if I did I spose it could be 30-40k easily , but I did cut 2 links off, I expect by next service will see if I need a chain sprocket set change for sure

If you're able to cut a link or two on a worn chain sprocket kit, you are inviting trouble. Though the chain can latch a little more harder on the sprocket, you increase the sprocket wear even further and it can cause hooking of the sprockets as Jon has posted a very nice example. You can extend the chain this way for a few hundred kays, but not recommended at all.

Cheers!
VJ

**sman999** · 10-22-2016, 10:02 PM

Re: Honda CBR 250R

Timing chain was in worse shape. It should have been changed earlier but at least now it's done. Along with it chain tensioner has also been changed. There were two pads one stationary and the other one which adjusts the timing chain slack. The stationary pad was not changed as the mechanic said it wouldn't get any sign or wear and tear over life time. Also the engine head had to be removed to changed that particular pad. I was scared that the mechanics in the SVC (Theni) won't be able to handle that kinda work. Now the sound is completely gone and the throttle response is back to normal without any jerkiness.

I have this question about the oil leak we discussed in few posts back. If there is oil leak via value seals or piston rings there would be white smoke right?

As of the last ~250kms there is no dip in oil level. Ill keep a tan on the oil level and post updates, also in the mean time ll try to learn the possible cause for oil leaks.

Thanks guys. ☺️

**sambit** · 10-22-2016, 10:26 PM

Re: Honda CBR 250R

Originally posted by sman999 View Post

Timing chain was in worse shape. It should have been changed earlier but at least now it's done. Along with it chain tensioner has also been changed. There were two pads one stationary and the other one which adjusts the timing chain slack. The stationary pad was not changed as the mechanic said it wouldn't get any sign or wear and tear over life time. Also the engine head had to be removed to changed that particular pad. I was scared that the mechanics in the SVC (Theni) won't be able to handle that kinda work. Now the sound is completely gone and the throttle response is back to normal without any jerkiness.

[ATTACH]220963[/ATTACH]

I have this question about the oil leak we discussed in few posts back. If there is oil leak via value seals or piston rings there would be white smoke right?

As of the last ~250kms there is no dip in oil level. Ill keep a tan on the oil level and post updates, also in the mean time ll try to learn the possible cause for oil leaks.

Thanks guys. ☺️

Were you facing that high volume tik tik sound!!!

**sman999** · 10-22-2016, 10:28 PM

Re: Honda CBR 250R

Originally posted by sambit View Post

Were you facing that high volume tik tik sound!!!

Please be a little elaborate about what do mean by that my friend.

**sambit** · 10-22-2016, 10:39 PM

Re: Honda CBR 250R

Originally posted by sman999 View Post

Timing chain was in worse shape. It should have been changed earlier but at least now it's done. Along with it chain tensioner has also been changed. There were two pads one stationary and the other one which adjusts the timing chain slack. The stationary pad was not changed as the mechanic said it wouldn't get any sign or wear and tear over life time. Also the engine head had to be removed to changed that particular pad. I was scared that the mechanics in the SVC (Theni) won't be able to handle that kinda work. Now the sound is completely gone and the throttle response is back to normal without any jerkiness.

I have this question about the oil leak we discussed in few posts back. If there is oil leak via value seals or piston rings there would be white smoke right?

As of the last ~250kms there is no dip in oil level. Ill keep a tan on the oil level and post updates, also in the mean time ll try to learn the possible cause for oil leaks.

Thanks guys. ☺️

I meant to the bold part. What kind of sound were you facing due to the wearing of timing chain!!

**sman999** · 10-22-2016, 10:49 PM

Re: Honda CBR 250R

Originally posted by sambit View Post

I meant to the bold part. What kind of sound were you facing due to the wearing of timing chain!!

A frilling noise as the timing chain was too much slacked. when you get on the gas from lower rpms, sometimes when you slow down when cruising in stable speeds on highways. It would be irritating when you Rev the engine too.

Also it was spoiling the timing chain tensioner too. Glad that I changed it.

**B7ACKTHORN** · 10-23-2016, 12:51 AM

Re: Honda CBR 250R

Originally posted by sman999 View Post

I have this question about the oil leak we discussed in few posts back. If there is oil leak via value seals or piston rings there would be white smoke right?

As of the last ~250kms there is no dip in oil level. Ill keep a tan on the oil level and post updates, also in the mean time ll try to learn the possible cause for oil leaks.

Thanks guys. ☺️

Yes, usually the smoke thing is a overrated, though it's a very important indicator of the health of the engine. Valve stem oil leaks usually result in smoke early morning and once the valves heat up and expand they seat well and there shouldn't be no smoke. When a piston rings are worn, you see smoke all the way (the infamous mosquito spray terminology) In both cases oil oil is consumed and when you have both you really "smoke it out".

Check your engine thoroughly, the oil filter cover, observe if you find any oil leak weep stain marks, if all seems well, try doing a compression check and if it comes out okay, then we can of what's next.

Cheers!
VJ

**Deathwing** · 10-23-2016, 09:40 AM

Re: Honda CBR 250R

Originally posted by B7ACKTHORN View Post

Completely normal. The clips/springs are there to arrest pad chatter nothing more. It's a small yet significant thing that reduces brake pad jingling around their seats. All calipers have clips in them, some are visible and some aren't. These are in fact called springs or springs cum anti judder. Install it back in the right direction, it helps pad seat in their place and in turn increases braking efficiency.

Shim job would require an expert hand. Roam the city if you have to, find a good SVC or find a mechanic who deals with superbikes, they can surely help you out. DO NOT trust the local mechanics with a shim job. It requires precise measurement of replacement shims, proper head job.

If you're able to cut a link or two on a worn chain sprocket kit, you are inviting trouble. Though the chain can latch a little more harder on the sprocket, you increase the sprocket wear even further and it can cause hooking of the sprockets as Jon has posted a very nice example. You can extend the chain this way for a few hundred kays, but not recommended at all.

Cheers!
VJ

Its been running for 4000km easily, but a change in 2-3k km is oncoming, as I've mentioned I'm not touring or going high speeds, I avoid taking the bike over 7000rpm.. Bike's chain was checked by my SVC and another private SVC, still have some life, I will change it another 2000 or 3000km, but will change it in my next service which is in 2000-3000kms. But as you've mentioned only problem I face is a clunky gearbox at times otherwise its smooth over all.

**s1d** · 10-23-2016, 05:52 PM

Re: Honda CBR 250R

Originally posted by sman999 View Post

I have this question about the oil leak we discussed in few posts back. If there is oil leak via value seals or piston rings there would be white smoke right?

Color of smoke is important. Just oil burning will almost always be bluish smoke.
As mentioned by vj, sometimes a bad valve seal might cause smoke only when engine is cold and might vanish once warmed up. So keep an eye on the oil level.

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