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How Much Did It Cost You To Have A Cylinder Bored?


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#31 HowardsMF155 OFFLINE  

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Posted December 19, 2012 - 06:57 PM

Hi cold one, this was in Raleigh, at the Walker Auto stores/Napa parts place off Six forks rd. You want the phone number? And yes, they did know this was for a single cylinder engine. There is, or was, a machine shop between Raleigh and Cary that I used way back when I was on that side of town. I think they were affiliated with Walker also.

#32 chris m OFFLINE  

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Posted December 21, 2012 - 07:36 PM

Question for you all. The Machinist called me and wanted to know what the piston to cylinder bore clearance is supposed to be.

It's a K301 and it is getting a .020 over sized full skirted piston (style A).

from what I found it looks like it should be .007/.010 does that sound right to you?

#33 Guest_rat88_*

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Posted December 21, 2012 - 10:53 PM

I think the standard is .001 for every inch of bore, so probably between .003 and.004. That is what I go buy, but it wouldnt hurt to get a second opinion.

Im guessing on the bore size...around 3 1/4?

Edited by rat88, December 21, 2012 - 10:56 PM.

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#34 chris m OFFLINE  

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Posted December 21, 2012 - 11:46 PM

I think the standard is .001 for every inch of bore, so probably between .003 and.004. That is what I go buy, but it wouldnt hurt to get a second opinion.

Im guessing on the bore size...around 3 1/4?

.020 over would be 3.395 and The piston to cylinder clearance is so much different depending on the style piston in the K series. I just figured I would see what others have had there clearance at when rebuilding.

#35 dodge trucker OFFLINE  

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Posted January 09, 2013 - 10:22 AM

I think the 0.01 per inch is for a water cooled app like a car engine; air cooled is usually more.



#36 Guest_rat88_*

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Posted January 09, 2013 - 10:47 AM

I think the 0.01 per inch is for a water cooled app like a car engine; air cooled is usually more.

I am not sure where I picked up that number. It was either from a guy that bored out the arctic cat 400 and a robin 2 stroke jug that builds race engines for MXer or my new guy that builds briggs engine for racing karts. Either way, I trust both of them. 



#37 Tennblue59 ONLINE  

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Posted January 15, 2013 - 08:50 PM

$50 to bore, more or less, out of 3-4 shops over the last few years.

 

Curiously, got a LOT more varied quotes to turn the journal on a crank shaft - That was between $40 - $125!!!

 

I don't remember the specifics, but the clearance differs between an air cooled engine and a water cooled engine. But your machinist ought to be able to figure that out by looking at the block..... Also some variety in the clearance based on the piston material, but that is more for exotic stuff than what we use in our GT engines...



#38 dodge trucker OFFLINE  

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Posted January 19, 2013 - 11:42 PM

yeah the guy I use has been at it for years and has never insisted on having the pistons on hand to bore a block; says that drives him crazy and insinuates taht he doesn't know what he's doing.... never had an issue with anything he has machined for me yet






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