cylinder wall scratch....
#1
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cylinder wall scratch, have picture please take a look
one finger nail deep scratch on cylinder wall....only of number 3.........is it ok to run.......what are the consequences of running with a scratch on cylinder one.....anyone ever did it befor..............have picture.........please take a look
Modified by avotegra at 1:10 AM 5/7/2008
Modified by avotegra at 1:10 AM 5/7/2008
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Re: cylinder wall scratch.... (avotegra)
oil blow by, loss of compression, worst case is break a ring and tear up everything in it's path.
You'll need to bore it over and put in new pistons.
You'll need to bore it over and put in new pistons.
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Re: cylinder wall scratch.... (mcmotors)
damn that sucks.........guess i can't use 81mm anymore......finger nail deep is that 1mm or more........
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#8
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Re: cylinder wall scratch.... (avotegra)
that looks pretty bad......rule of thumb is if you can feel/catch it with your finger nail then you should have it fixed. especially if it runs the whole length of the cylinder llike that.
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Re: cylinder wall scratch.... (non-VTEC)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by non-VTEC »</TD></TR><TR><TD CLASS="quote">that looks pretty bad......rule of thumb is if you can feel/catch it with your finger nail then you should have it fixed. especially if it runs the whole length of the cylinder llike that.</TD></TR></TABLE>
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Re: cylinder wall scratch.... (avotegra)
hard to tell how deep it is by a picture, you would really have to measure it with an indicator and it would have to be set-up on a machine to do that. If the other cylinders are ok, cheapest route is sleeve that one cylinder and leave the others alone. I would bore or sleeve that cylinder and put in all new pistons and bearings.
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Re: cylinder wall scratch.... (avotegra)
dude, lemme tell you ive done some ghetto things in my day 'cus I was a poor college student. I feel like it teaches you a lot rather than some hearsay.
In my experience I did a build and just honed over it. It looked just like that. I probably wouldnt boost on it because the extreme differences in cylinder compression and minor oil consumption/leaning out.
I put 50k miles on that motor including several trips across half the country. Again, I wouldnt boost it but I ran it stock with oil consumption about 3/4 quart every oil change. That consumption is still within honda specs but the variances in compression sure isnt.
Good luck with what you choose.
One last thing. Now that I have money and time I would overbore it out at the machine shop. (if i was in your situation)
In my experience I did a build and just honed over it. It looked just like that. I probably wouldnt boost on it because the extreme differences in cylinder compression and minor oil consumption/leaning out.
I put 50k miles on that motor including several trips across half the country. Again, I wouldnt boost it but I ran it stock with oil consumption about 3/4 quart every oil change. That consumption is still within honda specs but the variances in compression sure isnt.
Good luck with what you choose.
One last thing. Now that I have money and time I would overbore it out at the machine shop. (if i was in your situation)
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