I found this browsing in my spare time...

 

http://ramengines.com/_wsn/page3.html

 

I am a huge fan of high compression (let nature handle the rest). I read an article of an ea82 spfi pistons perfectly going into an ea81. The kit at this website has flat pistons for ea81. Anyone done this to an ea82 with the pistons shown? I am guessing it would knock it up to over 10:1 (still friendly) except for possible valve disaster due to no "safe" grooves...

if you read on they also have parts for the ea82 so i think its just a matter of calling and asking...did you check out there long blocks, talk about pricey (6400us for 130hp, no wonder people do ej swaps)

except for possible valve disaster due to no "safe" grooves...

But its very unlikely for a EA81 to break a timing belt.... They can bent rods though. Do the EA82 pistons have groves for the valves cut in them? I own a EA81DC, dual carb, in other words it has the valves the same way round as the EA82's. So the groves would work with mine. Might make my 100hp engine a little more peppy. Although I have more plans for that too.

1600 pistons work to,might need to that if I need to rebuild a motor...