Twin scroll GTX2860

[MRX330]

They make these. Solves a few problems and makes more hp and torque especially through midrange rpms. What type of exhaust manifold is the next piece of the puzzle.

 

[slopoke]

Probably. The Peron flange type tubular manifold. Not cheap at around 1,300.00.

 

[MRX330]

Probably. The Peron flange type tubular manifold. Not cheap at around 1,300.00.

Well as long as it’s divided that’s all that matters.

 

[MRX330]

So I am getting in touch with someone from Garrett through email. I am going to see what it takes to set up a twin scroll and exhaust manifold for the FiST

 

[jeffreylyon]

Well, there is a T3 to v-band adaptor but I'm not sure if that'll place the turbo in a stock-ish place. I don't know how far into the manifold the separator should continue for best performance, but any decent welder (perhaps even I?) could wack the v-band or stock flange off a tubular manifold and attach a divided T3 flange.

 

[MRX330]

Well, there is a T3 to v-band adaptor but I'm not sure if that'll place the turbo in a stock-ish place. I don't know how far into the manifold the separator should continue for best performance, but any decent welder (perhaps even I?) could wack the v-band or stock flange off a tubular manifold and attach a divided T3 flange.

That will most likely be the route. I would really like a divided log manifold Cerakoted but...

 

[jeffreylyon]

That will most likely be the route. I would really like a divided log manifold Cerakoted but...

Well, I'm sure that you could either stack adaptors or have someone weld up a stock flange to T3 adaptor, but I gonna think that you're losing quite a bit of the improvement of a twin scroll by hanging it off of a reworked stock manifold. The guys making big power are doing it with a tubular manifold.

 

[jeffreylyon]

I just read up on twin scroll turbo chargers. We'd need a completely different manifold to separate 1/3 and 2/4 (or some combination) all the way to the flange. Also, it doesn't look like the twin scroll version of the GTX2860 has a different turbine wheel, so I wonder if it'll offer anything more than just better exhaust scavenging.

 

[MRX330]

V2 cams with a twin scroll would be great for scavenging along with undiluted combustion. That in itself would be worth it to me

 

[jeffreylyon]

The EB 1.6 firing order is 1342 so you'd want to bundle 14 and 23. I just looked at the Pumaspeed, Full Race, and BP Racing manifolds to see that the runners aren't collected in such a way that a flange swap will do it. Custom manifolds ain't cheap.

 

[MRX330]

The EB 1.6 firing order is 1342 so you'd want to bundle 14 and 23. I just looked at the Pumaspeed, Full Race, and BP Racing manifolds to see that the runners aren't collected in such a way that a flange swap will do it. Custom manifolds ain't cheap.

I have been poking around. Twin scroll is the proper way to set up a turbocharged engine without a doubt. I’ll see what Garrett says and see if it’s feasible