dumb question...

beckspop

Seaman
Joined
Apr 11, 2009
Messages
74
How bad would it be to only bored one cylinder. 30 over and leave the other two?
 

pnwboat

Rear Admiral
Joined
Oct 8, 2007
Messages
4,251
Re: dumd question...

Re: dumd question...

Seen it done many times with no problems.
 

SweeperForce

Chief Petty Officer
Joined
Feb 7, 2010
Messages
487
Re: dumd question...

Re: dumd question...

What would be the purpose of this.
 

beckspop

Seaman
Joined
Apr 11, 2009
Messages
74
Re: dumd question...

Re: dumd question...

money... have to bore one due to minor scoring, but with the cost of pistons in this economy... I only ask because the old man behind the napa counter (who was trying to sell me) tried to scare me that my motor would "shake itself apart" if I didn't have them bore all three at $50 a hole. Add to that two more pistons at about $100 a pop plus shipping and well....
 

jerryjerry05

Supreme Mariner
Joined
May 7, 2008
Messages
18,075
Re: dumd question...

Re: dumd question...

Start at .010 over for minor scoring.At .030 you'r in the area.should I rejet or not?Some say yes, some say no.
At .010 It can be done again.Once U hit .030 that"s about as far as U can go.J
 

Frank Acampora

Supreme Mariner
Joined
Jan 19, 2007
Messages
12,004
Re: dumd question...

Re: dumd question...

The engine will NOT shake itself apart! It will NOT even notice that one cylinder has been bored. One cylinder at .030 over will not even give an extra 1 cubic ince displacement. So go ahead and bore only one cylinder. HOWEVER: Be certain to fix whatever caused the cylinder to score. Usually it is a lean running carb. Failure to make certain that all three carbs are set correctly OR --in the case that your engine has one carb-- that the carb is set correctly will result in another scored cylinder and wasted money.

Search posts for carb setting, then clean and set them after the engine is rebuilt.
 

beckspop

Seaman
Joined
Apr 11, 2009
Messages
74
Re: dumd question...

Re: dumd question...

Thanks again guys. As usual, I'd be lost without your wisdom... I wish I could meet you guys one day so I could shake your hands.
 
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