Crack inside oil filter case

1934 Views 14 Replies 7 Participants Last post by Tamir, Jun 6, 2021

Akashsp

Discussion Starter · Apr 6, 2021

Hi friends, i came across this problem in my cbr while changing the oil filter in my bike. This was the first time i tried to change oil by myself.I found this crack inside the oil filter casing when trying to replace my filter.Mine is just a 2year old cbr running just 12000 km and maintaining correct service schedules through the Honda service centers until now.Need your help.Attaching the image

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TrueFaith

· #4 · Apr 6, 2021

I have to wonder if this issue is similar to this recent post by SpookyPotato where his side cover had to be replaced:
Oil leak on 2012 Honda CBR 250cc | Honda CBR 250 Forum
Could this be a manufacturing defect as jkv357 notes?
Might be worth contacting Honda to see if this is an emerging issue.

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TrueFaith

· #8 · Apr 10, 2021

B7ACKTHORN said:
Do check, sometimes casting flaws will leave off excess trails like the one in the picture. From the image, I can see those cracks have emerged perpendicular to the oil filter bolt, probably over tightening could have cause mild stress cracks. Eitherway, if it's an casting flaw, you can buff it off, but if the cracks have crevices, then they are cracked, and it's better to replace the cover.

Cheers!
VJ

It looks like only 1 of the cracks lines up with an oil filter cover bolt, The others are running off of indentations in the casting. Plus I find it VERY hard to believe that the notoriously brittle oil filter cover bolts would come even close to doing that kind of damage to the side cover without snapping off well before from being over-tightened. Those things routinely break just from using a torque wrench.
I wonder how many of us may have the same "flaw" in our side covers to varying degrees without really noticing it yet. I know I'm going to look closer on my next oil change. For all we know it could be a known issue at Honda, maybe cosmetic only and still well within tolerances for safe operation of the engine.
I hope the OP follows up with whatever info he can wrest from Honda. This "issue" really has me curious.

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TrueFaith

· #11 · Apr 11, 2021

jkv357 said:
If someone is doing an oil/filter change, maybe they could take a close look at their cover and let us know what it looks like. Posting a photo would help.

I'm pretty confident it's just normal casting flaws, but it would be beneficial to compare the OP's to others.

I agree it's likely "normal" (and has probably been present in CBR side cover castings for years), but it would be interesting to discover how prevalent it is. Most of us are too preoccupied making sure we don't install the filter backwards to notice any tiny cracks in the filter housing. Also it's not something you "expect" to see, so that plays a part as well (as any rider who's been cut off by an inattentive driver knows.)
I'm on a fresh oil change for the start of the riding season here in the Northeast (YAY 😁), but I'll be sure to report anything spotted on my next one. I hope others do too.

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