What is the max bore on a 5.9l ??

[Headshot zod]

Just a curiosity thing, what is the max you can bore out a Cummins??



thanks...

 

[KLockliear]

I think cummins says no more than . 040" I know those are the largest stock replacement pistons/rings available.

 

[Headshot zod]

ok... . thanks...

 

[GO 4LO]

For what it's worth, there was a guy on here awhile back claiming he had his . 060 over, along with a bunch of other stuff - HT60/HC5A twins with 225 psi, etc. Doubt any of it was true, but you never know...

Chris

 

[Headshot zod]

I'll keep that in mind...

 

[A Johnson]

"Kit, Engine Piston, 6, 1. 00 mm Oversize"



Or roughly . 0394" oversize are available through Cummins.



A Johnson