BOV's? Wastegate? Need Advice
#1
BOV's? Wastegate? Need Advice
Has anyone run the S300 over the S475 without wastegates or BOV's? I have two boost gauges so I will be able to watch drive pressure and boost but am concerned about over-spooling the little 60/68. Maybe even some predictions before I shoe-horn this beast in the truck and have to pull it back out to add to it. BTW, WG will have to be external because these are non WG'd housings.
Thanks in advance,
Luke
Thanks in advance,
Luke
#2
#4
#5
Sent from my iPhone using Tapatalk
#7
#8
I suggest getting an external waste gate. Connect it between the manifold and bottom turbo. Let the big turbo do the work when pressures get high, and have both working to get up to pressure. That's my plan once I get my 150's in. Currently, my set up is working very, very nicely un-gated. HX35/40 w/16cm exh housing, over S400 (71mm).
#9
I suggest getting an external waste gate. Connect it between the manifold and bottom turbo. Let the big turbo do the work when pressures get high, and have both working to get up to pressure. That's my plan once I get my 150's in. Currently, my set up is working very, very nicely un-gated. HX35/40 w/16cm exh housing, over S400 (71mm).
Smoke is what I am trying to get away from, that and burnt cylinder walls and melted pistons. What I don't want to do is solve one problem and cause another.
Sorry for the long post but with the money that I've spent, I am nervous! I am finding it hard to get consistent answers on this. I certainly welcome any constructive criticism on my setup. I am by no means a pro so any opinions from people who are would be great. What kind of HP #'s does anyone think I will see with this setup?
Thanks for all the replies guys, I really appreciate the input!
Luke
#10
You might get by if you keep your injectors on the small side. My first run down the track Saturday, the allen screw on my boost elbow vibrated shut. Essentially I was running ungated. The result was that I blew a big hole in a new hump connector. Didn't have my eyes on the gauge right then, but I hit 90psi+ with the gate working.
If you can manage it, it's best to have a gate on both turbos. Don't use a BOV on a diesel. When it blows, the lack of restriction will let your turbo seriously overspeed.
As far as HG, you never know. Some guys blow them using studs, I'm still on the original and just using the allen bolts, and I'm sure that I've hit triple digit boost more than once. But I am only running 18 degrees of timing.
If you can manage it, it's best to have a gate on both turbos. Don't use a BOV on a diesel. When it blows, the lack of restriction will let your turbo seriously overspeed.
As far as HG, you never know. Some guys blow them using studs, I'm still on the original and just using the allen bolts, and I'm sure that I've hit triple digit boost more than once. But I am only running 18 degrees of timing.