CY Piston Abnomalities

[DemonRC]

I got over a dozen pistons sitting around my garage. 8 of them are CY's. I was rebuilding my DS/Sikk engine tonight and while putting the piston/crank together I examined the interior of the piston because I was thinking about dremeling it out to lighten it like the CAT5 modded piston. Anyways I noticed this huge lump of melted material on the intake side of the piston. So I grabbed all my other pistons and guess what? They all got huge lumps of shit on the intake side of the piston. Some have 2 large lumps, some have 2 small lumps, some have 1 lump on a random side, and only 2 pistons out of 8 didn't have lumps. The 34mm pistons looked much better than the 36mm's. All 5x 36mm's looked like and inside out Quazimoto. Anyways, I figured I'd share that with you guys.

 

[Clubin]

Every piston i install I spend about 1 hour with my die grinder cleaning things up. I remove about 1 table spoon of aluminum.

 

[DemonRC]

I never did it in the past but I'm going to do it from here on out.