how much do i machine?
#1
Guest
Posts: n/a
how much do i machine?
ide like to get some advice about how much to machine on one of my stock 502's.
ill try and make this short.
head gasket leaked and hydraulic locked the motor.meaning it ran till i shut it off then it wouldnt turn over.my mechanic replaced the stock gasket with fellpro gasket and it seamed to run ok for awhile.6 or so run hours later the knocking started.
obvious damage: number 7 cylinder scored and piston damaged.bearings have water spots.crank appears to be ok.
how much should i machine and replace.mechanic thinks .030 over will fix the cylinder.how risky is it to just bore one cylinder , install 1 new piston and install new bearings?please keep in mind i have a limited budget.
thanks in advance ,
lotoparty
ill try and make this short.
head gasket leaked and hydraulic locked the motor.meaning it ran till i shut it off then it wouldnt turn over.my mechanic replaced the stock gasket with fellpro gasket and it seamed to run ok for awhile.6 or so run hours later the knocking started.
obvious damage: number 7 cylinder scored and piston damaged.bearings have water spots.crank appears to be ok.
how much should i machine and replace.mechanic thinks .030 over will fix the cylinder.how risky is it to just bore one cylinder , install 1 new piston and install new bearings?please keep in mind i have a limited budget.
thanks in advance ,
lotoparty
#3
Registered
Join Date: Feb 2002
Location: Honeoye, NY
Posts: 763
Likes: 0
Received 0 Likes
on
0 Posts
Can't help but to agree with Griff. Once you go through all you have to go through to do one cylinder it doesn't really cost all THAT much more to do it right. Anyhow; I don't know anybody in this boating game whose budget didn't get limited after being into it for awhile. --- Jer
#5
Charter Member
Charter Member
Join Date: Feb 2001
Location: Gretna, Ne
Posts: 264
Likes: 0
Received 0 Likes
on
0 Posts
Yes, bore all the cylinders. If you don't you will have one piston that will not weigh the same as the other 7. Being out of balance I could see the crankshaft and bearing life shortend.
Just my .02.
Give Bruce a call @ State of Mind Watersports in St. Louis. He will give a straight answer and if he says you can get buy with a one cylinder bore, which I doubt, that would be good enough for me.
His number is (314) 731-3795. He is usually very busy, so leave a message if he is not there.
mike
Just my .02.
Give Bruce a call @ State of Mind Watersports in St. Louis. He will give a straight answer and if he says you can get buy with a one cylinder bore, which I doubt, that would be good enough for me.
His number is (314) 731-3795. He is usually very busy, so leave a message if he is not there.
mike
#6
Registered
Join Date: Jan 2002
Location: south jersey
Posts: 230
Likes: 0
Received 0 Likes
on
0 Posts
deck the block and shave the heads just enough so they seal properly this time. it's not expensive. don't forget to account for this when choosing a head gasket as your compression ratio will change. trw forged pistons may be the least expensive ones that are pretty good.
#7
Charter Member #1171
Charter Member
What about sleeving the one cyl and using everything else stock?
__________________
I want to live in a world where a chicken can cross the road and not have its motives questioned.
I want to live in a world where a chicken can cross the road and not have its motives questioned.
#10
Charter Member #655
Charter Member
Bore all 8 and do it right, check the rods if you compressed water the rod might be bent.....
__________________
If your boat has a sail do you ride a horse to the ramp?
If your boat has a sail do you ride a horse to the ramp?