After 2500 miles on a fresh motor, I just removed the head to fix a valve issue on cylinder #2. Everything looks fine, but there was a little bit of grit on top of piston #1.

My first thought was that this is literally sand that got through my intake, since my driveway is a 50-ft stretch of almost beach-like sand. But what else could it be?

 

could be from the rings setting in or if you had sandblasted something like the valve cover.

 

nothing was sandblasted, but the rings were all brand new. I've never heard of that.

 

when you put new rings in a freshly honed block the rings will file them selfs down to fit in the slots the go around the pistons.

 

makes sense, the shavings have to go somewhere.

 

well do u run an air filter?

 

not trying to agrue with you but if sand made it threw the intake it would plug up the injectors

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shortyz21 &raquo;</TD></TR><TR><TD CLASS="quote">well do u run an air filter?
</TD></TR></TABLE>

of course!

 

PICTURE
Its ONLY on #1, not on the others:

 

sand?.......also did ya try to stick a maganet to it?

 

It did not stick to my magnet.

 

well the only way to really get sand in there would be from sandlasting. did you build the motor or did someone else?

 

Someone else built the head and block, I assembled the motor from the separate halves and put on all the ancillary doodads. They were told specifically not to sandblast, since it is not technically legal in my SCCA classing. I was told it was tanked. This sand looks just like the sand on the ground around here. I have recently compressed the cylinders with air, and this one was first, so maybe it happened then, I'm not sure how.

 

Hmm either way its odd. i know i took a valve cover to get cleaned and they used steel shoot to clean it up and i had to drill out the baffle to get the steel shot out. O did ya check your plugs? maybe one burnt up?? Hell i dont know its odd lol

 

ok i may be wrong but is part of that piston missing toward the back were it gets really black?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gearhead16 &raquo;</TD></TR><TR><TD CLASS="quote">ok i may be wrong but is part of that piston missing toward the back were it gets really black?</TD></TR></TABLE>

That is sure what it looks like....

 

Heh, no its just discolored that way. I suppose that's right where the spark plug fires.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gearhead16 &raquo;</TD></TR><TR><TD CLASS="quote">ok i may be wrong but is part of that piston missing toward the back were it gets really black?</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SIred91 &raquo;</TD></TR><TR><TD CLASS="quote">

That is sure what it looks like.... </TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fireant &raquo;</TD></TR><TR><TD CLASS="quote">Heh, no its just discolored that way. I suppose that's right where the spark plug fires.</TD></TR></TABLE>

Looks like its missing a chunk to me. Pick of all 4 pistons?

 

seems like some one dident properly positon the piston rings

 

Really? How can you tell?



#2 is the only one I've started to clean, it was the reason I pulled the head... I bent a valve while I was changing the stem seals... long story... I'm a knucklehead.


Modified by fireant at 7:37 AM 9/22/2008