trying to decide on turbo sizing for twins.

monster50iii

New member
Joined
Oct 9, 2011
Messages
141
Well Im getting twins: 62/?? Over an s475. I cant decide on the 68 or 71 turbine wheel.. I was told the 71 will help spool the primary a bit quicker but Im afraid Ill lose alot of spool. My truck has a 66 on it from ed and here in mn with the cold its prettty dirty, and tuning doesnt seem to help. I want/need more cruising boost, and yet I want to get the most out of my setup. Any info would be greatly appreciated!
 
Are you even conserned about the s400 turbine or either turbo's turbine housings?
 
Go with the 68 turbine wheel on the secondary with 14cm housing. I would say primary turbine housing size and wheel will determine its spool characteristics more than secondary.
 
Back
Top