Hot side design
Major disadvantage, no. I forgot who it was (maybe monkey fab or street karr fab), someone who makes the fancy turbo flanges did a test and it was like 30whp difference at over 1000whp so nothing major, but the divided to the flange setup did make a bit more power.
I was thinking since both sides feed into the same size pipe then move a foot over to the flange would just extend the back pressure point to the Y and slow the exhaust going into the turbo perhaps causing slower spooling and a reduction in power.
Now after pulling that out of my *** what would that translate into actual tangible losses, slow sedan answered that question lol.
Now after pulling that out of my *** what would that translate into actual tangible losses, slow sedan answered that question lol.
Look at "other" applications' implementation of cross-overs / up pipes (Subaru, for example). It doesn't seem to concern them a bit- some making well over 5hp/ci.
If packaging constraints dictated that setup, it wouldn't stop me from using it (and have).
If packaging constraints dictated that setup, it wouldn't stop me from using it (and have).
I was thinking since both sides feed into the same size pipe then move a foot over to the flange would just extend the back pressure point to the Y and slow the exhaust going into the turbo perhaps causing slower spooling and a reduction in power.
Now after pulling that out of my *** what would that translate into actual tangible losses, slow sedan answered that question lol.
Now after pulling that out of my *** what would that translate into actual tangible losses, slow sedan answered that question lol.
Yeah, the merge would definitely be moved over.
TECH Fanatic
Joined: Jan 2022
Posts: 1,034
Likes: 468
From: Seattle
That WG positioning looks awesome and would lend itself super well to integration into the downpipe. If I had the room in the front of my engine bay that setup would be high up on my list of things to consider. You could even put a 90* on the end of that v-band to put the T4 housing pointed up if you needed to.
I was thinking since both sides feed into the same size pipe then move a foot over to the flange would just extend the back pressure point to the Y and slow the exhaust going into the turbo perhaps causing slower spooling and a reduction in power.
Now after pulling that out of my *** what would that translate into actual tangible losses, slow sedan answered that question lol.
Now after pulling that out of my *** what would that translate into actual tangible losses, slow sedan answered that question lol.
Most any setup will make pretty good power so for most people I don't think it matters at all, just make it fit whatever chassis you are working on and send it.
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I think you'd be better off running a divided hotside to really take advantage of the twin scroll T6 housing.
Keep the primaries small in the 2" to 2 1/4" range and you shouldn't need much real estate.
I ran a merged T4 on my last setup and it was noticeably slower building boost with a smaller turbo than my current T6 setup.
Keep the primaries small in the 2" to 2 1/4" range and you shouldn't need much real estate.
I ran a merged T4 on my last setup and it was noticeably slower building boost with a smaller turbo than my current T6 setup.
Based on feedback from ForcedFed, I ran 2.25" from my manifolds all the way to the T6 flange. I haven't had a chance to do the final tuning on it as it all came together later in the season in 2021. The 5.3, T6 flanged VSRacing S480 still builds 3psi on the brake at 3K of the 2 step. Just testing some 45mph on up pulls, it feels fantastic. That setup you have pictured looks clean and efficient. I'd definitely run it if it fit my chassis. I welded all mine up from scratch and even with the radiator up and forward it's mighty tight from the nose of the water pump to the turbo to the radiator. Doesn't run close to hot , thanks to the turbo blanket. O.P. what T6 turbo will you be running?
TECH Addict
Joined: Oct 2016
Posts: 2,513
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From: PDX-OR-USA
If nothing else it just makes sense to me that you'd jump up about 1/2 inch at the "Y" for that last couple feet to the turbo.. Since your kinda going 2 in to 1 ..
To really exployt the split inlet turbos a 180 header split to each port would probably be optimum theoretically.. But dang I would want to build it.. LOL
To really exployt the split inlet turbos a 180 header split to each port would probably be optimum theoretically.. But dang I would want to build it.. LOL