I've got a good deal on a twin scroll 258. But I already have placed the order for an ERL manifold, so here is the question. How detrimental would it be to the performance of the turbo with out having a twin scroll manifold. I mean, the guy i'm buying the turbo from (he rebuilds turbo's for a living) can bullet tip (round off) the middle edges of the volute inlet. I think that would suffice but I might just tell him to put on a .70 turbine housing. Give me some input guys, I really don't feel like spending a "G" for a twin scroll mani!
IMO don't do that to the TS hotside. Either drop the cash for the TS manifold, or pick up the .70 housing. Either one will work better than using a TS housing on the standard manifold.
IMO don't do that to the TS hotside. Either drop the cash for the TS manifold, or pick up the .70 housing. Either one will work better than using a TS housing on the standard manifold.
What would be the negative effects of it besides probably burning that bridge ,??? I'm considering the .70 hotside, i'm trying to see if he can swap it out free of charge, or he can machine one for me from a garret T3 unit. I'll see what he says.
But he has a good deal on a faster spooling turbo that will suit his goal?????? why spend money for lag.
Just get the .70 a/r housing. With the BW s258 turbine wheel, it will flow PLENTY. Knife-edging is what it's called when you attempt to increase the aerodynamics of a divider. But you can't change the purpose of the turbine housing doing that. It was designed for a divided runner manifold, and your spool will suffer significantly runnign an open header design.
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Matt
dd '90 GST, Holset H1C
,??? I'm considering the .70 hotside, i'm trying to see if he can swap it out free of charge, or he can machine one for me from a garret T3 unit. I'll see what he says.
