Osceola Stumpy
Well-known member
what is the torque spec for the cylinder bolts?
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220 bolt torque
- Thread starter Osceola Stumpy
- Start date
Des Moines Boater
Well-known member
My book shows the 7/16 x 20 through bolts and crankcase to cylinder studs torque value is 490 to 510 inch pounds or 40 to 43 foot pounds.
Osceola Stumpy
Well-known member
Thanks Des Moines. I pulled all my cylinder and all pistons are.015 and I will clean everything. So I know that when I put the 220 on the boat everything is good to go. Now I have to find the dome top pistons.
Speed Wheelie has been very helpful but his pistons are standard.
Speed Wheelie has been very helpful but his pistons are standard.
Des Moines Boater
Well-known member
Why not go with standard cylinders or O-470 cylinders that already have the dome pistons?
Osceola Stumpy
Well-known member
Des Moines
i was thinking that the cost of the new cylinders and the extra mag would not be worth the dollars spent staying 0470.
i have seen some 220's that were split and bored for 520 cylinders and the motors really came alive.
the 220 that i have was rebuilt and pickled. after pulling all the cylinders i have just a little surface rust at the bottom of two cylinders and a little carbon in each. the cross hatching is in good shape. the stork pistons have just a little ware marks.may thoughts on this 220. change the pistons to dome tops be sure that the motor is clean on the inside. run this and save some pennies for the 520 cylinders and mag.
i heard that the 0470 aircraft cam can not be installed in a 220 even though it is a 0470 displacement.
your thoughts would be appreciated.
i was thinking that the cost of the new cylinders and the extra mag would not be worth the dollars spent staying 0470.
i have seen some 220's that were split and bored for 520 cylinders and the motors really came alive.
the 220 that i have was rebuilt and pickled. after pulling all the cylinders i have just a little surface rust at the bottom of two cylinders and a little carbon in each. the cross hatching is in good shape. the stork pistons have just a little ware marks.may thoughts on this 220. change the pistons to dome tops be sure that the motor is clean on the inside. run this and save some pennies for the 520 cylinders and mag.
i heard that the 0470 aircraft cam can not be installed in a 220 even though it is a 0470 displacement.
your thoughts would be appreciated.
speed wheelie
Well-known member
I checked the numbers The 220 is already running a 225 cam!!JT540":s60c76bg said:
speed wheelie
Well-known member
Well I'm sure that's possibleJT540":y5uswx9l said:
But all the one's that i have checked have that cam
