Moparts

440 Piston Rings

Posted By: CurYellowBird

440 Piston Rings - 05/26/12 02:01 AM

Which way are you supposed to clock the 440 piston rings before dropping them in the hole?
Posted By: Danan

Re: 440 Piston Rings - 05/26/12 02:54 AM

Everyone has their own preference. Doubt it matters so long as you don't line the gaps up. But I'm anal so I clock them all. If I'm installing a piston on the driver's side I put the top ring at about 11 o'clock, 2nd ring at about 7 o'clock, oil ring spacer at 3 o'clock, and the oil rings at 1 o'clock and 5 o'clock. This is assuming that 12 o'clock is pointing straight up (towards the intake manifold). In actuality, I think of the gap positions in terms of degrees rather than on a clock system, but it would be too difficult to explain that in written form. Basically, think of the top ring gap being at 30 degrees above the centerline of the piston, oriented to the front (probably closer to 10:30 rather than 11 o'clock). Hopefully you get the point..
Posted By: MoparforLife

Re: 440 Piston Rings - 05/26/12 03:19 AM

I don't see that it makes much of a difference seeing that they rotate with the movement of the piston. IMO you could put them in lined up (I wouldn't) and run the engine for 10 minutes - tear down and they would be nowhere near where you installed them
Posted By: Kern Dog

Re: 440 Piston Rings - 05/26/12 08:55 AM

I thought that I read in my last set, the manufacturer wrote to oppose the 1st and 2nd rings, then put the oil ring gap in line with the top ring.

Top ring 12:00
Second ring 6:00
Oil ring 12:00
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