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b18c1 rod knock ?

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Old May 1, 2013 | 06:55 PM
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Default b18c1 rod knock ?

i think its a rod knock but i want different opinions on what it can be.. i was coming home nd it started ticking but i kept driving about a 1-2 miles and the knock got way louder. i plan on fixing it so any suggestions on what i should do ? the audio on the video is not the best...
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Old May 1, 2013 | 07:02 PM
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what pistons are u running


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Old May 1, 2013 | 07:05 PM
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check timing as well. could be hitting a valve. I wouldn't run it anymore. pull the head and check it out


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Old May 1, 2013 | 07:14 PM
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Default Re: b18c1 rod knock ?

Originally Posted by teggy!
what pistons are u running


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their low compression pistons the block was rebuilt at 80k
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Old May 1, 2013 | 07:17 PM
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Default Re: b18c1 rod knock ?

Originally Posted by teggy!
check timing as well. could be hitting a valve. I wouldn't run it anymore. pull the head and check it out


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will do that this weekend haven't had time to mess with it lately thanks
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Old May 1, 2013 | 07:47 PM
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Default Re: b18c1 rod knock ?

Sounds like rod knock to me. Pull the oil filter and look for bronze colored metal shavings in the filter. That will tell you if you spun a rod bearing.
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Old May 1, 2013 | 08:11 PM
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Default Re: b18c1 rod knock ?

Originally Posted by 1998GsRIntegra
Sounds like rod knock to me. Pull the oil filter and look for bronze colored metal shavings in the filter. That will tell you if you spun a rod bearing.
I recently drained the oil but the oil didn't look lyk it had metal shavings but on the oil plug there was metal shavings on it but no a lot can I assume it is or should I still remove the oil filter ?
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Old May 1, 2013 | 08:28 PM
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Default Re: b18c1 rod knock ?

Yes, I would still remove the oil filter. It's not like you can't throw it back on if you find nothing in it. Take it off, if you don't see any shavings in it, put it back on and look elsewhere.
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Old May 1, 2013 | 08:33 PM
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Default Re: b18c1 rod knock ?

Originally Posted by 1998GsRIntegra
Yes, I would still remove the oil filter. It's not like you can't throw it back on if you find nothing in it. Take it off, if you don't see any shavings in it, put it back on and look elsewhere.
alright thanks
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Old May 2, 2013 | 08:12 AM
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Default Re: b18c1 rod knock ?

Spun bearings don't always have shavings in the oil pan

I spun my engine, drained all the oil, looked for even the smallest spec, nothing.

The only way to tell for sure is to cut the oil filter open and inspect the filter element.

And your bearings are spun for sure.
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Old May 2, 2013 | 08:15 AM
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Default Re: b18c1 rod knock ?

Drop the oil pan and check the rods. Don't run it till you find it. Most things are salvageable but the more you run it the less likely they will be and you'll buy yourself into more extensive repairs.
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Old May 2, 2013 | 09:56 AM
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Default Re: b18c1 rod knock ?

Originally Posted by Blackhalo6
Drop the oil pan and check the rods. Don't run it till you find it. Most things are salvageable but the more you run it the less likely they will be and you'll buy yourself into more extensive repairs.
I was lookin forward to doin that once i have time nd i havent ran it ever since hopefully i didnt make any severe damages..i turned it on after sittn for a couple weeks nd there was no knocking but after a minute it started knocking again.
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Old May 2, 2013 | 10:00 AM
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Default Re: b18c1 rod knock ?

Originally Posted by m4xwellmurd3r
Spun bearings don't always have shavings in the oil pan

I spun my engine, drained all the oil, looked for even the smallest spec, nothing.

The only way to tell for sure is to cut the oil filter open and inspect the filter element.

And your bearings are spun for sure.
My pistons are still reusable right ? Jst trying to make sure.. did yu rebuild your engine after ?
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Old May 2, 2013 | 02:09 PM
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Default Re: b18c1 rod knock ?

you could probably get away with re using your pistons. get new rings tho and a fresh hone. how many miles did it have since the last rebuild?
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Old May 2, 2013 | 02:53 PM
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Default Re: b18c1 rod knock ?

Originally Posted by teggy!
you could probably get away with re using your pistons. get new rings tho and a fresh hone. how many miles did it have since the last rebuild?
It had about 8k
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Old May 2, 2013 | 03:33 PM
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Default Re: b18c1 rod knock ?

8k is not very long. was it clearenced correctly when it was built last? did you have oil when it started knocking or did you reuse an old oil pump?
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Old May 2, 2013 | 06:54 PM
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Default Re: b18c1 rod knock ?

Originally Posted by teggy!
8k is not very long. was it clearenced correctly when it was built last? did you have oil when it started knocking or did you reuse an old oil pump?
The problem was my oil return line went loose I have no idea how but the check oil light came on but I was almost home so drove it for a min or 2... The next day I added oil nd retighten the oil line and the light came off..nd it ran fine drove it about 10 miles and it started ticking but I Thought it was something loose but after a while it developed really loud nd the check oil light started blinking but i was already home..
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Old May 2, 2013 | 08:22 PM
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Default Re: b18c1 rod knock ?

thats 100% a rod knock!
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Old May 3, 2013 | 01:00 PM
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u ran it dry. hopefully only the bearings were affected. pull the pan and check it out


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Old May 3, 2013 | 03:40 PM
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Default Re: b18c1 rod knock ?

Originally Posted by teggy!
u ran it dry. hopefully only the bearings were affected. pull the pan and check it out


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If it spun bearings, the crank is shot, and probably at least one rod. When you spin a bearing the journal on the crank ovals and the only way to fix it is to turn it down which is a no go on Honda cranks because they are tufftrided. Tufftriding hardens the journals but it is very inconsistent in how far it penetrates the metal. You could have .0020" on one journal and .0005" on another. If you turn the journal down there is a chance you would remove the tufftriding and you would no longer have hardened journals.

Last edited by 1998GsRIntegra; May 3, 2013 at 07:07 PM.
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Old May 5, 2013 | 09:27 AM
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Default Re: b18c1 rod knock ?

Originally Posted by 1998GsRIntegra
If it spun bearings, the crank is shot, and probably at least one rod. When you spin a bearing the journal on the crank ovals and the only way to fix it is to turn it down which is a no go on Honda cranks because they are tufftrided. Tufftriding hardens the journals but it is very inconsistent in how far it penetrates the metal. You could have .0020" on one journal and .0005" on another. If you turn the journal down there is a chance you would remove the tufftriding and you would no longer have hardened journals.
that's what I was thinking my crank is gonna be done but til I start tearing it down il see.. this is the first time this happen to me what should I be looking forward to do beside getting it honed buying new bearning and rods ?
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Old May 6, 2013 | 06:12 PM
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Default Re: b18c1 rod knock ?

?
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Old May 6, 2013 | 08:38 PM
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Default Re: b18c1 rod knock ?

You haven't even dropped the oil pan yet and you're asking us what to replace. One step at a time chief. Tear it down, do a damage assessment, and then post some pictures up. We'll get to what needs to be replaced in good time.
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Old May 9, 2013 | 07:00 PM
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Default Re: b18c1 rod knock ?

so before I dropped the oil pan today I turned on the car one last time nd it turned on fine it sounded normal for a couple minutes then it started making the noise again ? il be posting the pictures asap
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Old May 9, 2013 | 07:41 PM
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Default Re: b18c1 rod knock ?

Its not going to fix itself- no matter how long you let it sit before starting it again. You're actually causing more damage by continuing to let it idle injured.
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