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1972 Yamaha DT2

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piston ring expanders

I have a 1mm over NOS piston kit that came with thin flat wire ring expanders. Do you guys use these? Thanks.

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Enduronut
Enduronut
Sep 18
•

Hello jkinb .... and welcome to our forum


Absolutely ... the engineers that designed these rings are a heck of a lot smarter then the Joe Blows out there that say "don't use them".

Here are some of the benefits they give . . .

  1. Less noise ... they cushion the crown of the piston from slamming against the cylinder wall (esp. @ tdc) ... during combustion

  2. Less piston rock ... which translates into better ring sealing.

  3. Helps keep the rings from getting stuck in place from carbon build-up


Happy Trails, Dave/Enduronut

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