Borg S200sx ported?
05-16-2017, 12:00 PM
#1
Borg S200sx ported?
So I am running a Borg S200sx turbo on my setup. As I was running out of time till my tune date, I forgot all about porting the exhaust side to match the t4 flange. The S200 comes from factory with t3 sized ports on a t4 flange. And its recommended to match these. How much would this be holding my setup back? Should I pull it and do it, or will I need my tune fixed after? Some picture below to show what I'm talking about.
05-16-2017, 03:17 PM
#3
Well my expectations going in was anywhere from 430-500whp and 300wtq. We ended up with 450whp and 290wtq. I was a little disappointed with the tq. But not the hp since I had told Jeff I was looking for a safe reliable tune(Jeff Evans does amazing work by the way, car runs extremely clean). I'm just not sure if it would net me any significant gains porting it. I also thought the setup would spool a little faster I'm thinking the turbo is just a tad small S200sx 1.22 ar. Heres the graph.
05-16-2017, 04:45 PM
#5
I feel like on that particular housing an AR, you run the risk of moving the power farther right, with a strong possibility of getting the numbers you want but at a much shorter powerband (if you Port it). Why not sell and buy either a smaller AR t4 twin scroll. Are their no t4 housings for that size turbine? Sorry like I said no Borg knowledge.
Do u have a boost plot? Just to be clear u have a t4 twin scroll Mani?
This would only help spool but, How's your mid-range afrs? Have you tried turbo blanket and header wrap?
The tuner is gonna #makewhatyabrung but it's a dual challenge up to you to kinda bring the pieces together for a truly beautiful powerband. Everything counts and no mod is to small when your squeezing.
Do u have a boost plot? Just to be clear u have a t4 twin scroll Mani?
This would only help spool but, How's your mid-range afrs? Have you tried turbo blanket and header wrap?
The tuner is gonna #makewhatyabrung but it's a dual challenge up to you to kinda bring the pieces together for a truly beautiful powerband. Everything counts and no mod is to small when your squeezing.
Last edited by MorngWoodStewie; 05-16-2017 at 05:41 PM.
05-16-2017, 05:02 PM
#6
Actually looking now they have .83, .86, 1.00 , 1.15. I originally am only using this turbo because I won it at a car show. So I'm going to stick with it for awhile. Thats why I'm trying to figure some things out. As for the afrs I'll have to do some data logging, but from just driving and glancing at the gauge I wanna say its around 12ish
05-16-2017, 05:07 PM
#7
I saw a dyno graph on Evans site with almost the same setup except a s366 .91a/r. And larger injectors, also smaller dual 38mm wastegates. 525 and 390 on pump gas. That would excite me lol
Trending Topics
05-16-2017, 05:26 PM
#8
I feel like on that particular housing an AR, you run the risk of moving the power farther right, with a strong possibility of getting the numbers you want but at a much shorter powerband. Why not sell and buy either a smaller AR t4 twin scroll. Are their no t4 housings for that size turbine? Sorry like I said no Borg knowledge.
Do u have a boost plot? Just to be clear u have a t4 twin scroll Mani?
This would only help spool but, How's your mid-range afrs? Have you tried turbo blanket and header wrap?
The tuner is gonna #makewhatyabrung but it's a dual challenge up to you to kinda bring the pieces together for a truly beautiful powerband. Everything counts and no mod is to small when your squeezing.
Do u have a boost plot? Just to be clear u have a t4 twin scroll Mani?
This would only help spool but, How's your mid-range afrs? Have you tried turbo blanket and header wrap?
The tuner is gonna #makewhatyabrung but it's a dual challenge up to you to kinda bring the pieces together for a truly beautiful powerband. Everything counts and no mod is to small when your squeezing.
05-16-2017, 05:32 PM
#9
I'd say have some fun with it for now and just remember when ur rdy to upgrade do the while your in there stuff, everything counts. Kinda like you wanting to optimize the flanges to match. I just think a t3 modded flange to a t4 1.22 AR housing would be a lot more laggy and it would most likely hurt the overall performance even further. I'm not sure if the volutes are any different between t3 or t4....if they are the same and it's just t3/t4 Port sizes collecting to a identical volute Ar then it will change the spool characteristic. Vice versa if the T3 volute scrolls are different (cross sectional area) sizes then a t4 volute scroll then u might actually be able to capitalize on a quick Port match. I have never asked this question lol...
Last edited by MorngWoodStewie; 05-16-2017 at 05:36 PM.
05-16-2017, 05:47 PM
#10
Its a divided t4 flange but for some reason Borg has the volute inlet ports t3 size which is smaller. So when mated up to the manifold there is like a couple centimeters the whole way around that blocks airflow. If you look at the first picture I posted you can see the overlap, so just assume you are exhaust gasses about to go through those openings from the manifold lol. I don't really understand why they do this. I assume because they do a lot of turbos for trucks. So I guess I'm just wondering what port matching would do. Quicker spool, smoother, and if it would affect the tune?
So I re-read your response and to clarify the turbo is true t4 divided, its just the ports on the flanges that are t3 size. My manifold is obviously correct port sizes, just Borg doing weird things lol
So I re-read your response and to clarify the turbo is true t4 divided, its just the ports on the flanges that are t3 size. My manifold is obviously correct port sizes, just Borg doing weird things lol
Last edited by crxswap; 05-16-2017 at 05:58 PM.