well at these miles
comp test 140 psi all cly . leak down test is 10 %
i will replace the clutch rollers . i blew out the lower chain bearing landing off a jump . and put in two plastic washers it the pri clutch . other than that no failures , just maint .
i Will change other bearings so i dont have to worry about them
comp test 140 psi all cly . leak down test is 10 %
i will replace the clutch rollers . i blew out the lower chain bearing landing off a jump . and put in two plastic washers it the pri clutch . other than that no failures , just maint .
i Will change other bearings so i dont have to worry about them
bluemonster1
LIFE MEMBER ONLY ONCE!!!
right on
daman
New member
Time for rings my Friend,pistons are probably junk/outa spec rocking in the boar now too because you waited so long.s fortuna said:leak down test is 10 %
well if 10 % needs new rings what would it be then ? i heard that you will get down to 3-4 % in a 4 st with gapless rings .
daman
New member
Thats a car 4-stroke engine,no comparison!,rings are the heart of a 2 stoke engine they do twice the revolutions/work as a 4 stroke does,try a search on rings here on the site,you'll find good reading.s fortuna said:
that sled needs rings and probably pistons too by now because there out of tolerance,,good luck.
Thumper1
New member
i would think at 10,000 miles, you would want to replace the pistons anyway since you have the motor open??
daman
New member
with regular ring replacement very good chance pistons would be in tolerance at 10k.Thumper1 said:i would think at 10,000 miles, you would want to replace the pistons anyway since you have the motor open??
snomofo
VIP Lifetime Member
daman said:with regular ring replacement very good chance pistons would be in tolerance at 10k.
Based on other's experiences here, pistons are often within spec at 10k without PM ring replacements.
daman
New member
Really?????,,tell that to tomseal and some others,under spec at under 6,000.snomofo said:Based on other's experiences here, pistons are often within spec at 10k without PM ring replacements.
snomofo
VIP Lifetime Member
daman said:Really?????,,tell that to tomseal and some others,under spec at under 6,000.
Yes, really. Did you not read the word often?
Do a search...
daman
New member
yes whats your point? you do a search sounds like you need too.snomofo said:Yes, really. Did you not read the word often?
Do a search...
snomofo
VIP Lifetime Member
daman said:yes whats your point? you do a search sounds like you need too.
Point being that some find them in spec at very high miles (hence the word often) and some don't.
Perhaps you need too search to. :>)
snomofo said:Based on other's experiences here, pistons are often within spec at 10k without PM ring replacements.
I pulled pistons out at 7500 miles, had a cracked piston skirt and the others were out of spec.
daman
New member
That could have ended bad,good catch SXL.SXlover said:I pulled pistons out at 7500 miles, had a cracked piston skirt and the others were out of spec.
daman said:That could have ended bad,good catch SXL.
Yes it was, I'm glad we decided to finally tear it apart for piston rings. We had owned the sled since 3000 miles and it was the first time we took it apart. Put in all new pistons, rings, gaskets, and outer crank bearings...and that was just the motor. We put in all new suspension bushings and even a new front shock on the rear suspension.
03viperguy
Moderator
a little over 9k miles on mine and it still starts, runs great, great comp, and great mileage still. never really been a big beleiver in changing out the rings as maint. but thats just me. I also always let my sleds warm up to avoid any cold seize damage.
snomofo
VIP Lifetime Member
03viperguy said:a little over 9k miles on mine and it still starts, runs great, great comp, and great mileage still. never really been a big beleiver in changing out the rings as maint. but thats just me. I also always let my sleds warm up to avoid any cold seize damage.
I think I should respond and defer to Daman's points and suggest (before he does ;>) you tear into it soon. I too go well beyond the recommended PM interval and as some have found, things are within spec at big miles but much over 6-7 K and I think you may be flirting with disaster.
I didn't go much beyond 4k with cast iron before re-ringing (except when using Wisecos), but with plated cylinders I have seen pistons go much further before wearing beyond replacement limits. Even Cats!
daman
New member
@ snomo, lol
anyway we all do things that we think is right and thats fine it's what makes the world go around,I've always operated that way my whole life it's just the field i work in keeps me in this habit and this habit has kep me W/O head aches of down time and pricey unnecessary repairs,things wear out even when they continue to work well.
I'm meticulous with my stuff or the stuff I'm responsible for always have been i want my stuff to be tip top shape is how i work.
to each is his own,ride safe
anyway we all do things that we think is right and thats fine it's what makes the world go around,I've always operated that way my whole life it's just the field i work in keeps me in this habit and this habit has kep me W/O head aches of down time and pricey unnecessary repairs,things wear out even when they continue to work well.
I'm meticulous with my stuff or the stuff I'm responsible for always have been i want my stuff to be tip top shape is how i work.
to each is his own,ride safe
03viperguy
Moderator
even with 130psi in the two higher cylinders and 120 or 125 on the lower compression one??