62 or 64mm/s475 twins

[Randall12v]

ok, so the twins I got for my truck were a hx40/s475 (used set)...

I will be upgrading my hx40 later this year for either a 62 or 64mm turbo.

Which turbine wheel would be better matched in the twins setup - 65, 71, 74?

 

[bsmith]

ok, so the twins I got for my truck were a hx40/s475 (used set)...

I will be upgrading my hx40 later this year for either a 62 or 64mm turbo.

Which turbine wheel would be better matched in the twins setup - 65, 71, 74?

i vote for the 62/71.

 

[Randall12v]

i take it you like the setup you got?

 

[bsmith]

i take it you like the setup you got?

yep, still got some tuning to do. but they make me love driving my truck, i cant wait to get in and drive it.

 

[RonA]

HX40 is a really good top charger. It flows very well right in the range that is needed with twins. I've seen several go from an Hx40 to a 62mm S300 and see no difference in performance.