Check the sig for the basic set-up, it is going to be a typical truck manifold z06 cammed LM7. The charger I went with is the GT4294 with a Tial 1.00 v-band inlet hotside. My question is with the truck manifold flanges being availible in 2.25 and 2.5" outlet and the inlet on the v-band housing being 2.75" what size merge pipe should I be going with? should I go 2.25 from the manifolds to 2.75 into the charger? 2.5 from the manifolds to 2.75 at the charger? 2.5 at the manifolds to the 3 down to 2.75 at the charger? I am going to be using this housing on a GT4202 down the road so I'de like to leave room to grow but I dont want to hinder performance now. That and with the set up I have I believe a single 44 WG will flow enough to keep me safe at around 15 PSI. Also who makes an afordable stainless merge that will work for the set-up I am asking about?

 

Come on guys where are my fabricators?

 

2.250 to a 2.750 merge will be more than enough.One of the most mistakes made on a turbo system is people make the piping too big.

 

cone engineering

 

Spd exhaust, so many diferent merges, transitions, etc.

 

I'd do 2.5" from the headers to the turbo, make the inlet at least 2-3" of straight tubing before the turbo.

 

ok guys thanks for all the help. I was looking into SPD but they want 189.00 for the merge i needed it was a very high quality piece but a little to high priced for my budget. Cone dosent have the exact 2-1 I need but their prices are down arounf 40.00 so I am going to call them and see if they could do a custome piece. I think 2.25 to 2.75 will the best route to go for now.

 

why?no need for that big of piping.

 

What did I miss...2.5" tubing is small with 2 to 3" of straight section before the turbo. Did you think I meant 2 - 3" pipes?