brainbypass mod

1.) who has theirs venting to the atmosphere? how loud is it?

2.) i was thinking of going with twin jgs 40's, one right after each header on my build, with a 12" dump pipe on them, is that enough gate?

i am using an 82mm turbo, with a large t6 turbine housing. probably run 15 psi street, 20+ at the track

white01

I have dual 38mm waste gates and they vent to the atmosphere. I don't think they are loud at all. Of course my truck is the only 1 I've heard in some time.
Instead of running 2 gates why not 1 big gate.....like a 50mm.

Rich

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PT76GTSH turbocharged
700/721 @20psi
11.61 @ 123 @16psi with 570/590
New times coming soon.

skidmarkracing

atmo, only time it is open is under full boost

35thPony

50mm tial, vented to the atmosphere, and you can hear it in the next county, and I like it....

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SOLD

falstaff

Tial makes a wastegate thats 50MM?

35thPony

oops, look at post time, I was asleep... I have a JGS 50mm and it dumps into my down pipe...

brainbypass mod

i want 2 gates, one right after each header mainly for packaing reasons

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03 black turbo lightning - holset hx60 powered

"And another thing.....when I gun the motor, I want the whole world to think it's coming to an end"
-Homer Simpson

mr12volt

In my opinion, venting the wastegate to atmospere sounds like a terrible exhaust leak and sounds like total crap.
It is so smooth sounding when you plumb it back into the D.P.
I found this out when I added a 2nd gate(boost creep) and didn't have the time or parts on hand to runthe 2nd one into the exhaust. As soon as I drove it, It made the entire truck seem like a pile of turd.
This aweful sound starts as soon as the gate starts to crack open which is before full boost unless your running an electronic wastegate controller.

If you don't want to plumb it back into the downpipe, there are companies out there making wastegate mufflers now.( or you could make your own by using tractor mufflers or similar.)

Just my 2 cents,
Paul

falstaff

Running mufflers on your wastegates , wouldnt that cause a restriction where you most of all dont want it?

Oh and just running an electronic controller wont keep the wg from cracking open either. Especially if its run off a manifold reference. C02 is needed to do that.

Frank5L

The latter is true. I run mine dumped to atmosphere, twin Tial 44s on my Lightning and one Tial 60 on the s10 we're building.

brainbypass mod

i'm going with jgs gates, will twin 50's be too much? what would be problems with too big wastegates?

i like the v-band flange connection on the 50's over the flange on the 40's also...

fyi, i plan to run 15-20 psi on the steet, 20-25 at the track

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03 black turbo lightning - holset hx60 powered

"And another thing.....when I gun the motor, I want the whole world to think it's coming to an end"
-Homer Simpson

brainbypass mod

well, i filed my taxes yesterday, should be almost enough of a refund to get the 2 40mm jgs gates and the single 60mm jgs bov. (i'm only getting $600 back, hey at least i don't owe this year)