Motor has 615 miles on it and was smoking a bit. Im changing out valve seals this week and will be reinstalling the head after that. I noticed these scratches and figured the same guy that put my head back together also screwed up the bottom end as well. These scratches I cant feel with my finger "YET" but assuming at this rate by 20k miles the cylinders will need a bore. Will the motor run well with minor scratches in the cylinders? Maybe all the scratches are from large amounts of oil turning into carbon and being caught on the compression stroke?

 

I have honestly seen worse. If you have the funds to do something now go for it, but it should be ok assuming that you dont drive like a asshat all day long

 

i will be rebuilding in a year for boost so i should be good. thanks.

 

what was the piston to wall clearance?

 

It shouldn't be that bad. I've seen cars work ok on worse. But just after 615 miles? Something's wrong there.

 

Those pistons look pretty nasty for only 615 miles, assuming they were clean before going in.

When you say you can feel them with your finger, can you catch your nail in any of them?

 

615? was there some sort of break in procedure that you didnt do?

 

break in procedure wasnt completely normal. i ended up hitting it hard after 500 miles. i can not feel it with my nail.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1badteg &raquo;</TD></TR><TR><TD CLASS="quote">break in procedure was normal. i ended up hitting it hard after 500 miles. i can not feel it with my nail.</TD></TR></TABLE>

If you don't catch your nail in anything, you should be fine.

I would suggest if you don't despise taking the head off too much,
to probably check it again after a thousandish miles, unless it gets worse before that.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by methos713 &raquo;</TD></TR><TR><TD CLASS="quote">what was the piston to wall clearance?</TD></TR></TABLE>

 

by the amount of cabon lip on that i'd say you washed your cylinder walls out and started scratching them with the rings. Hone it, new rings and get it tuned.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1badteg &raquo;</TD></TR><TR><TD CLASS="quote">break in procedure wasnt completely normal. i ended up hitting it hard after 500 miles. i can not feel it with my nail.</TD></TR></TABLE>

did you tune after initial startup? you shouldnt have to break it in that long. because what 92boostedgsr said about washing your walls out makes sense.

 

make sure the cylinder is within specs b4 going any further.....if its ok then procede. its appears someone tried to hone it....get the right hone and diy or have the same guy do it again... http://www.in.honda.com/Rjanis...A.PDF
heres another link for block insp:
http://www.in.honda.com/Rjanis...A.PDF

 

after a clean hone inside the walls.. member to used top quality oil, because it a brand new surface... try royal purple.5w 40. quality. i i had the same thing. the hone is perfect with good oil.
there is hope

also...... it kinda looks like dis colorization.. make sure it not to lean. it will heat up

 

wall clearance is within limits. i hope the rings arent washed out but if they are then that sucks. thanks again.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1badteg &raquo;</TD></TR><TR><TD CLASS="quote">wall clearance is within limits. i hope the rings arent washed out but if they are then that sucks. thanks again.</TD></TR></TABLE>
just re-ring it, they're cheap and you already have the slugs out....might as well.goodluck

 

Yeah, you need to pull the pistons out and see what is going on with the rings. I'll bet that is what is causing your smoking problem, not the valve seals.

What exactly was rebuilt on the engine? It looks worse than my 160k mile motor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92 gs INTEG &raquo;</TD></TR><TR><TD CLASS="quote">after a clean hone inside the walls.. member to used top quality oil, because it a brand new surface... try royal purple.5w 40. quality. i i had the same thing. the hone is perfect with good oil.
there is hope

also...... it kinda looks like dis colorization.. make sure it not to lean. it will heat up </TD></TR></TABLE>

A hone isn't going to help get rid of those scratches.