piston slap got the best of me
06-30-2004, 08:33 AM
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piston slap got the best of me well after searching an searching why my car was smoking finally figured it out did a compression check and leak check today, the rings are gone, on a 2000 camaro ss with only 50,000 miles on it just added heads and cam on it last week and i reackon it making more power made it worse, now i'm stuck on rebuilding a motor, i really dont dont resleeve it, if there is damage on the cylnder walls is there anyway i can bore it out a little and if i can, whats the best way to do this as in size and piston size to get. what is a good piston to put in. well now i believe it piston slap does damage these motors
06-30-2004, 09:29 AM
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If I am not mistaken the largest cubes you can push with an LS1 before resleeving is 408, but that is also a stroker kit in addition to boring. You should be fine with just honeing the cylinder walls. As far as pistons go, that all depends on what you aplications are. It is easy to pick a good name brad set of pistons, but if it were me, and I were building it, set of lightweight JE pistons.
As for rebuilding the engine, since you are left with doing this, now would be a good time to any other internal modifications that you might want to do. Albeit maybe adding a set of forged rods, and or crank, or maybe doing a stroker. If you want to remain virtually stock, then I suggest you buy a new set of rods, (Carillo or Callies). I say this because the crank is good for hp and tq to around 600hp. Just machine your crank and buy a good set of rods and pistons. Since you already have heads, valve job, and cam that area is set. If nothing else have your engine freshened up with a new oil pump, fasteners, waterpump, and have machine work done to make the rotating assymbly lighter, and rotate more freely.
As for rebuilding the engine, since you are left with doing this, now would be a good time to any other internal modifications that you might want to do. Albeit maybe adding a set of forged rods, and or crank, or maybe doing a stroker. If you want to remain virtually stock, then I suggest you buy a new set of rods, (Carillo or Callies). I say this because the crank is good for hp and tq to around 600hp. Just machine your crank and buy a good set of rods and pistons. Since you already have heads, valve job, and cam that area is set. If nothing else have your engine freshened up with a new oil pump, fasteners, waterpump, and have machine work done to make the rotating assymbly lighter, and rotate more freely.
06-30-2004, 10:59 AM
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As I understand it the real "piston slap" problem
is the #1 cylinder overbore that was happening
in manufacturing. Then there is the simple, low
tension rings issue that lets more oil by especially
when you rev it unloaded and let the rings "flutter".
This is more of a "don't do that", though later years
used tighter-fitting pistons with anti-friction
coatings to reduce the wobble/flutter and fixed
the overbore too.
If you are convinced you have a bad #1 bore
(like, #1 plug is always crustier than the rest)
then boring all cylinders to match the largest
discovered ID, and using pistons with a proper
fit, is one way to go. If the bore is truly hosed
then honing may not suffice. By the time you get
through all that teardown etc., you might wish
you'd just picked up a low-miles '02 shortblock
or crate foundation, get it inspected proper,
and put your new goodies into that (save the
original block for your next stage or throw it
at the core charge once stripped). Just my
thoughts on it.
is the #1 cylinder overbore that was happening
in manufacturing. Then there is the simple, low
tension rings issue that lets more oil by especially
when you rev it unloaded and let the rings "flutter".
This is more of a "don't do that", though later years
used tighter-fitting pistons with anti-friction
coatings to reduce the wobble/flutter and fixed
the overbore too.
If you are convinced you have a bad #1 bore
(like, #1 plug is always crustier than the rest)
then boring all cylinders to match the largest
discovered ID, and using pistons with a proper
fit, is one way to go. If the bore is truly hosed
then honing may not suffice. By the time you get
through all that teardown etc., you might wish
you'd just picked up a low-miles '02 shortblock
or crate foundation, get it inspected proper,
and put your new goodies into that (save the
original block for your next stage or throw it
at the core charge once stripped). Just my
thoughts on it.