need some help

[S1eeper]

i have a 6bolt block bored .020 over and have some npr pistions and rings. i sized the gaps and the top rings are right at .019 but the 2nd rings are .027
and the ptw is .002/.003

is the 2ng gap going to be too big?

 

[banishedmunk]

yes that second ring gap is way to big. It should be closer to the .020 range. depending on the boost level. below 20 psi you use .003 x bore size in inches example .020 over will require a 85.5mm bore converted to inches will be 3.366in. then 3.366in x .003in =.010

 

[S1eeper]

thx, any one have some rings i can get fast?