Preventing Cap Walk?

guy's what the best way to prevent cap walk. Stock 2 bolt block. it the cylinders check out i'm thinking of building a 557 as a back up. but it show signs of cap walk and i think i know what was going on inside this thing....


Ace

powerstrokeace wrote:guy's what the best way to prevent cap walk. Stock 2 bolt block. it the cylinders check out i'm thinking of building a 557 as a back up. but it show signs of cap walk and i think i know what was going on inside this thing....


Ace

Pin 'em or dowel 'em if you don't want them to walk but, that won't stop them from bouncing.

powerstrokeace wrote:guy's what the best way to prevent cap walk. Stock 2 bolt block. it the cylinders check out i'm thinking of building a 557 as a back up. but it show signs of cap walk and i think i know what was going on inside this thing....


Ace

The "best" way is to 4-bolt it. If you meant short of 4-bolting, then doweling can dramatically minimize cap walk but I feel doweling also creates a new, lower horsepower limitation since more forces are thereby carried in the main caps rather than absorbed elsewhere throughout the engine. Stay with the lower hp numbers and the dowels work fine and the cap walk is all but eliminated. Otherwise, a higher hp number can be endured without the dowels and just letting the caps move around as they need to.

Paul

Paul Kane wrote:

powerstrokeace wrote:guy's what the best way to prevent cap walk. Stock 2 bolt block. it the cylinders check out i'm thinking of building a 557 as a back up. but it show signs of cap walk and i think i know what was going on inside this thing....


Ace

The "best" way is to 4-bolt it. If you meant short of 4-bolting, then doweling can dramatically minimize cap walk but I feel doweling also creates a new, lower horsepower limitation since more forces are thereby carried in the main caps rather than absorbed elsewhere throughout the engine. Stay with the lower hp numbers and the dowels work fine and the cap walk is all but eliminated. Otherwise, a higher hp number can be endured without the dowels and just letting the caps move around as they need to.

Paul

WELL DEPENDING ON WHAT THE BLOCK WILL SONIC CHECK I MAY JUST DO THE 4 BOLT CONVERSION. I LOST A ROD AND BROKE IT IN HALF AND HAS 2 SMALL KNICKS IN THE WALL. IF IT CAN'T CLEAN UP WITH A HONE I MAY JUST GO 4.460 IF ITS POSSIBLE AND FILL THE BLOCK AS WELL. ANY SUGGESTION ON MAIN CAPS? MILODON,CANTON? THE GUYS AT PROGRAM WILL NOT EVER RESPOND TO MY EMAIL OR PHONE CALL SO I WILL NOT GIVE THEM MY BUSINESS


ACE

If Program is out Milodon not as nice, but the next choice down. Next option you can make some 1" thick straps for the 2 bolt mains and use studs if you do not want to do the 4 bolt conversion. All depends how much money you want to put into the block.