Would anyone know how much I would need to cut off the domes of a set of TRW 2322 pistons to bring my comp. down to 10.0 to 1 with 64.5 cc chamber heads ? And with a comp roller with .544 lift would I need to recut valve reliefs ? Thought someone would know .
Milling Pistons ?
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Dont know if you can still find the dome volume on those old pistons.....
but with a 64.5 cc head....pretty much got to make them flat tops ..since a stock 340 flattop is near 10 to 1 at that head cc..
but with a 64.5 cc head....pretty much got to make them flat tops ..since a stock 340 flattop is near 10 to 1 at that head cc..
maybe im wrong but I think a 10 to 1 340 piston is 0.20 above the deck .
that is what you have to do....1/2 inch fill on the cylinder so you can cal the dome volume...
but as said above...a 68-71 340 piston is usually out of the deck anywhere from .008 to .020 ...and adjust the head gasket accordingly and you will have a 10 to 1 compression..
I got a set that had the dome milled mostly off...but they are in a old 340 in the corner of shed...you can just make out the dimple for the spark plugs still...
but as said above...a 68-71 340 piston is usually out of the deck anywhere from .008 to .020 ...and adjust the head gasket accordingly and you will have a 10 to 1 compression..
I got a set that had the dome milled mostly off...but they are in a old 340 in the corner of shed...you can just make out the dimple for the spark plugs still...
The dome volume on those is -10.7 CC's.
TRW L2322
Dome Height should be......... > .407"
Deck Height.......................... > + .017" {ab}
Dome Height should be......... > .407"
Deck Height.......................... > + .017" {ab}
Crapped if I know. You got the numbers. Do the math.
figure out how much clearance volume that you need.
CC your heads.
Measure your gasket.
Put one of your pistons in and put it at TDC and see where the dome is.
Now calculate how much volume that you need above the piston and how much you need to adjust it.
Now measure your piston compression height and then calculate where it needs to be to get where you want to go.....
CC your heads.
Measure your gasket.
Put one of your pistons in and put it at TDC and see where the dome is.
Now calculate how much volume that you need above the piston and how much you need to adjust it.
Now measure your piston compression height and then calculate where it needs to be to get where you want to go.....
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