i have a set of 63 cylinders i am going to use on my chopper build. i need to media blast and paint and also need to have them honed to the pistons that im using. wondering what i should do first , the media blast and paint or hone? im thinking blast and paint first then hone. what do you guys suggest?
gracias,
arnulfo
63 cylinders
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socalrider
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jdpan
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Re: 63 cylinders
Why would you paint first? They're gonna be pretty much mauled during the machine work and no doubt the finish will not have had enough time to properly cure, resulting in the inevitable do-over. Blast, hone, paint.
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1950Panhead
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Cotten
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Re: 63 cylinders
I'll second "blast, paint, hone."
But in real life,
It is often weld, carve, steel shot blast, aluminum oxide blast, scrub and prep, paint, bake, machine decks as needed, torque-plate and hone, and then de-prep.
....Cotten
But in real life,
It is often weld, carve, steel shot blast, aluminum oxide blast, scrub and prep, paint, bake, machine decks as needed, torque-plate and hone, and then de-prep.
....Cotten
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Huck
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Re: 63 cylinders
A chopper! hit the easy button! Wire brush um, bore um, run um. Don't take the good stuff off. Old pans look better with the old left alone.
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socalrider
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Re: 63 cylinders
cotton, how do you determine when a cylinder needs to be welded, carved and decked? does the decking affect the geometry relative to the pushrods,rocker arms and intake manifold?
arnulfo
arnulfo
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Cotten
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Re: 63 cylinders
Arnulfo!
Missing finnage means a trip to the welder for many of us.
Carving is what most welders refuse to do.
Decking either top or bottom is a matter of whether it has been screwed with before.
The bottom may have been welded, or just gouged, and the top may have suffered the 1980's "S&S O-ring" treatment, which is where the deck has been cut to leave a raised area a few thou high next to the spigot, in an attempt to create the ever-popular "fire ring" effect.
(It is easiest to detect when placing a head upon the cylinder without a gasket shows daylight.)
As long as the two decks are kept reasonably parallel, no significant geometry is changed. If you have a super lift cam and huge valves, you will be gauging all of that as a matter of course. The manifold distance on an OHV is sweetened. The compression increase might bother a maniac.
Forgive me, but a lot of Flatty cylinders crossed my benches 'back in the day', so I came to treat all like something's hiding somewhere.
....Cotten
Missing finnage means a trip to the welder for many of us.
Carving is what most welders refuse to do.
Decking either top or bottom is a matter of whether it has been screwed with before.
The bottom may have been welded, or just gouged, and the top may have suffered the 1980's "S&S O-ring" treatment, which is where the deck has been cut to leave a raised area a few thou high next to the spigot, in an attempt to create the ever-popular "fire ring" effect.
(It is easiest to detect when placing a head upon the cylinder without a gasket shows daylight.)
As long as the two decks are kept reasonably parallel, no significant geometry is changed. If you have a super lift cam and huge valves, you will be gauging all of that as a matter of course. The manifold distance on an OHV is sweetened. The compression increase might bother a maniac.
Forgive me, but a lot of Flatty cylinders crossed my benches 'back in the day', so I came to treat all like something's hiding somewhere.
....Cotten