what are the positions for the piston rings? I am putting a new motor back together and don't have the ring instructions (not the one who built the motor) are positinos generic? a quick paint sketch would help tons
piston ring placement?
- Thread starter XFlow_Fairlane
- Start date
Nick, my old Falcon manual says the top ring gap is right opposite (as far away as poss) from the exhaust valve; the second ring is 120° from that point; I always take it they mean clockwise in a top view. Then the top of the oil ring another 120° clockwise, and the bottom another 120.
Naturally, unless you're building a race motor, piston notches to the front.
There's another ring layout I've seen often where the compression rings are each 60° offset (one left, one right) from the forward point on the block centreline. The oil ring top and bottom are similarly opposed but facing the rear.
Sorry I can't specify which is best for your car, but they are the two I know of.
Regards, Adam.
Naturally, unless you're building a race motor, piston notches to the front.
There's another ring layout I've seen often where the compression rings are each 60° offset (one left, one right) from the forward point on the block centreline. The oil ring top and bottom are similarly opposed but facing the rear.
Sorry I can't specify which is best for your car, but they are the two I know of.
Regards, Adam.
I went with the second layout you mentioned (what I have used before) all I think is important is that no rings are lined up and that no ends are on the outermost sides. well I got my short block assembled tonight. heading out for gaskets and dropping the head and the rest on tomorrow.
A
Anonymous
Guest
duz it realy matter where the gaps are ?
Just as long as theres no joins that meet up with other joins and there away from the wrist pin is all that matters , as rings spin on the pistons any way!!
Just as long as theres no joins that meet up with other joins and there away from the wrist pin is all that matters , as rings spin on the pistons any way!!
