Why twin wastegates

But what if the wastegate pipes were seperate almost to the gate valve. Like siamesed. Or you could have a tuned length on the gate merge so the reversion pulse has a extractor effect. But, also consider this whole part of the system is under pressure and these gasses will have some inertia to them.

Or you could just vent through one tube if you're cheap like me and don't want to buy two wastegates. Although doing so will probably raise your minimum boost level. The cleaner pops in at to mop up the drool. Back to top 19 jack be nimble Posted 20 June - AM jack be nimble master of none.

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Posted 15 May - AM. Just copied a slab of text from the internetz: dual gates are usually used in split scroll aka divided setups Posted 16 May - PM. If you want to take advantage of the twin scroll, you really need the 2 wastegates. It is nearly like having twin turbos all in one. If you don't keep the sides completely separate then you won't be taking advantage of the twin scroll and you may as well just merge all the pipes.

MDK87 likes this. Posted 19 May - AM. Benzo4gT likes this. Posted 20 May - PM. MDK87 Hyundai's can't fly!! Shearer Proven Member. Shearer said:. I've called out certain companies on their marketing BS for years and they still haven't come up with any data backing their claims. And every single auto manufacturer now using turbos with any application are using the much more expensive to fabricate twinscroll design. When you have a turbo of which puts it's backpressure into the cylinder, you insert inert gases that fill a portion of the chamber, much like EGR.

Or perhaps you are saying that oem turbo applications can now get away with FAR more overlap with a turbo system that prevents blowdown from affecting overlap. What's the point of more overlap again? Marketing bs doesn't come from the originator of the twinscroll design. And it's silly to assume that preventing the blowdown event from ever at all affecting the overlap event of the subsequent cylinder would have NO effect at all.

Just because YOU havn't found any proof doesn't mean that the rest of the modern automotive world hasn't. Really, You should keep the personal issues with Full Race in the evom forums. Everyone is entitled to there own opinion. Everyone has certain preferences and every set up has different requirements. Everyone has been gulity of being stubborn at times. Opinions are like. Twinscroll setups are not a mandate for Emmisions Regulation, nor do they affect emmisions.

I wonder why the evo has a twinscroll 16g turbo. I wonder why The evo has a twinscroll 16g turbo. And you didn't feel the need to put an open manifold on that thing. You can completely push the compressor to the limit with the faster spooling hotside with the same fuel as any evo3 16g setup has ever used. The gearhead community is atuned to compromises and penalties. Benefit in one area, loss in another. Yea the spool speed was rpms faster and the topend suffered.

But what about a better chosen twinscroll housing? Maybe a rpm better spool and then still having the leverage of higher overlap potential, which when dialed in great contributes to spool speed AND increases topend. None of the tests even accounted for the potential benefit of a cam retune. But who knows? And those putting out those tests certainly have shown that.

This is as much of the same having your cake and eating it too as a better compressor wheel or turbine wheel. It prevents energy from being lost in blowdown to the next firing cylinder.

Energy saved much like a wheel is more efficient energy saved instead of being turned to heat or wasted in the exhaust. You must log in or register to reply here. Similar threads. Twin scroll wastegate setup. Gstclipse69 May 27, Turbo System Tech. Replies 21 Views 18K. Replies 60 Views 16K. Dec 19, ceedawg. Upload or insert images from URL. We have placed cookies on your device to help make this website better.

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Chris Wilson Posted February 21, Posted February 21, TBDevelopments 16 Posted February 21, JamieP Posted February 21, Posted February 21, edited. Cracking of tubular manifolds is definitely related to the number of heat cycles Posted February 22, Gpro 3 Posted February 22, Scott Posted February 22, TBDevelopments 16 Posted February 22, Once it gets from the discharge of the wastegate and the turbocharger turbine it doesn't matter anymore Tim TB Developments.

Posted February 23, Mike B 9 Posted February 23, John Bailey's new SRD build thread confirms everything you say about boostlogic products. Wez 39 Posted February 23, If only Wagner tuning made one for this engine.