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Did you get it off?

So whats the procedure to set the pistons to hit the head at 1000rpm higher than limiter? I am not sure I trust myself with that!

I appreciate the help Harbor! Hopefully this thread will help others as well.

Yes two pieces single piston.

The piston does rock slightly in the bore.

I just notice a difference between one and two pieces that's all. I aligned them with the pin one facing forward one rearwards. I would be curious if yours differs as much as mine did.

When you measured did you use two pieces of solder? I noticed when I didn't use two pieces my squish showed about 0.038in

Thanks, I think I should cut 0.020in to match what was decked. Then I would be at what ADA designed the head for.

So it looks like increasing squish via dome cutting may be the best option for me, should I go for 0.050in? I read 0.045in for freestyle but I like to WOT a bit too.

First failure was with the dry pipe at WOT, pulse nipple broke off... not fun. Second was adding hand warmers, line up to the bars was too small and overheated the front cylinder. Dumb dumb dumb.

Get a quick turn setup at the handle bars and drill the pivot mount on the nozzle inwards. That should help with rolls and stabs.

I should add that my main concern is reliability. I seized two pistons last year and did not get to enjoy riding.

I was suffering from the same flat top end before the rebuild. I had a type 4 drypipe that was stupid fast up top before, kind of miss that.

How would you set squish via rpm? Whats the correlation?

That sounds destructive.

So cutting just the squish band on the domes? 0.020in at 10.5degrees I presume.

I just assembled my motor after a bore(61x 82.5mm), freestyle sport porting and clean up decking. I also lapped the top of the cylinder to ensure a good oring seal with my ADA head. My cylinder measures 4.673" in height, so I lost about 0.020" from stock(seems like not the first time its been...

Well sounds like that cylinder will be fudged when your done with it.

Forget about it and do a conversion. ;)

Is that for a superjet? If so pro-x rings should work as both pistons should be made by Art.