mr-pitts

Just wondering if the piston to bore is a bit too much for this to run boost.I may need to put bigger pistons in.

yamahaSHO

Looks like a Subaru...


Without PTW measurements, it's all just a guess as to how long it will last and how noisy will be.

s2000Junky

The piston to wall clearance are pretty tight on this engine, much tighter then what I see there. Looks like the bore could be ovalized which is not uncommon on these high revving motors, and appears to have been burning some significant amount of oil based on the looks of that piston top. I'm not that encouraged based on the visual so far. But what was the compression and leak down results before you cracked the motor open? That's going to give you a more complete and accurate picture.

nguyen365

Anymore pictures?

mr-pitts

This is the only other picture i have,the engine is being rebuilt as its noisy and burns oil/smokes.

s2000Junky

That's not surprising based on how it looks.

mr-pitts

This is actually an engine Kings performance sent out as an as new rebuild.When i mentioned it sounded like i had piston slap Fernando suggested it was because id left the engine standing too long and the foggy weather we always get over here in the UK had caused accessive wear.When that didnt work he blamed my tuner

s2000Junky

I hate this industry sometimes. I've been burned by both engine builders and tuners in the past. Enough room for some deniability, so no one takes responsibility and the customer always seems to get shafted.

soulicious

Kitesurfer s2000

Wow this is bad