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Showing content with the highest reputation on 01/17/2020 in all areas

  1. I've just been trawling through a few piston ring manufactures websites AE , Hastings, Nevlock, MI, and found an answer to the question of the spring ring behind: ..." It is their to apply additional radial pressure to the piston ring. This increases the unit pressure applied at the cylinder wall. " So there you go.!
    2 points
  2. The purpose of the "wiggly ring" is to keep the lower ring central, taking up the free space (regardless of how much space you perceive there to be!) and keeps the ring central and equi-distant all around. Just because the original rings don't have them is no basis to leave them out. You may find that the original ring is a little wider in its cross section thereby not needing them, whereas the newer ring may be that little bit smaller to enable the 'wiggly ring to sit behind it!! Manufacturers don't include them for fun or as an 'optional extra' after all their R&D. When I did my engine , i put them in as supplied..... If l had left them out and for whatever reason I wasn't happy with the performance ....I wouldn't want to strip it ALL down again just to put them in!!
    2 points
  3. Good point, well made. I just put one of the expanders behind the lower ring [they are sat on the dining table]. It clearly takes up a small amount of play and keeps the ring more concentric. As it is zero hassle to fit them, i put them in. Thanks Neo.
    1 point
  4. That's the thing drewps, this already HAS the expensive bits. Need to change the crank seals and that defacto means the bearings too. Would you believe the mag side seal had literally come out of its seat.when I pulled the rotor the seal fell onto the bench. I can only assume it was blown out by high compression of the sports piston kit, (one ring high comp). It already has the piston and head, the pipe etc. A bloody good clean and removing all the teenage balls ups. Like airline for coolant pipes, ???. Amazing how few bodywork fixings you actually need. Couple of hours and it was a big pile of bits, all came apart easy too, surprisingly no seized bolts etc. Granted one or two had me reaching for the plussgas but even the engine mounting bolt (as notorious as the dt one) slid straight out. Cannot argue can I. Whats good for the goose etc. Daughter number 2 did say she got serious cool points being dropped off on the max the other day, that would be the shy retiring type with matt black lid with electric blue pinstriping and ghost skulls..
    1 point
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