COMPRESSION FOR STOCK MOTORS or built

[blaster0187]

just curious to kno what sum of u guys cranking compression is on stock motors vs bigger bores like 67mm 68mm???

i have a stocker at 127

 

[Larry's Shee]

That's good. Squeezing a larger volume into same space should be higher. Don't know if you could actually measure the difference.

 

[Larry's Shee]

BTW, a slight over bore isn't considered "built"
A 240 cylinder uses it's own head with larger volume.

 

[blaster0187]

well i wouldnt consider it "built" either but alot of people like that term lol a stock blaster with 1mm overbore is far from built lol