external wastegats's for 12v?

[stevezcummin]

someone had asked me if i knew if a external wastegate was available for my truck, and i had NO idea.... and my guess is they would be pretty loud! anyone have any idea?

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94 2500, reg cab long box. 6" RCD lift, 3" PA bodylift, Homegrown shackle flip, 2" coil spacer up front. 38.5" tires #100 Fuel plate, full forward, BHAF, Banks powerpack system, BHAF, autometer boost and egt gauges. Flex-a-lite electric fans.

[Dual K20s]

external wastegates are usually custom installed, but Engineered Diesel makes a trick adapter to make the install go very easy ENGINEERED DIESEL - WASTEGATE SYSTEMS

from your post I've got to wonder, do you know what an external wastegate is?

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98 Dodge 2500 Motor: 12 valve, BD exhaust brake, 4" turbo back exhaust, BHAF, KDP tabbed, 4K GSK, O-ringed head, .020 over HG, Modified AFC, DDP Stage 3 injectors, DDP DVs, 17.5* timing, 16cm^2 ex. housing Drivetrain: 5-speed 4x4 w/ SB clutch (13" OFE 450Hp)

[stevezcummin]

thanks for the reply, doesnt an external wastegate vent/purge the pressurized air to the atmosphere rather than into the exhaust? or am i confused.

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94 2500, reg cab long box. 6" RCD lift, 3" PA bodylift, Homegrown shackle flip, 2" coil spacer up front. 38.5" tires #100 Fuel plate, full forward, BHAF, Banks powerpack system, BHAF, autometer boost and egt gauges. Flex-a-lite electric fans.

[Dual K20s]

You're confusing it with a blow off valve, they are far from the same thing, and do completely different things.

Read this TurboByGarrett.com - Turbo Tech101

An external wastegate is not cast into the turbo's turbine housing, but still vent exhaust gasses around the turbine wheel

A BOV dumps excess boost in an effort to keep drive pressure (exhaust gas pressure driving the turbine wheel) greater than boost pressure (pressure generated by the compressor wheel, also know as resistance to flow) to eliminate turbo bark (or pressure spikes in the throttle body world)

A pop-off valve vents excessive boost pressure

While they all regulate boost, if you dump the boost pressure when there is still significant drive pressure you will over speed the turbo.

[stevezcummin]

ahhhh okay yeah i forgot about that stuff, thanks for clearing that up!

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94 2500, reg cab long box. 6" RCD lift, 3" PA bodylift, Homegrown shackle flip, 2" coil spacer up front. 38.5" tires #100 Fuel plate, full forward, BHAF, Banks powerpack system, BHAF, autometer boost and egt gauges. Flex-a-lite electric fans.

[cowbully]

Im really diggin that external wastegate from engineered diesel. Thats one of the better designs i have seen. Im thinking about getting one, to keep my boost down in the 50-60lb range. what do you think. good idea or no. I know im on borrowed time on my head gasket with just torqued down head bolts.

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'96' 3500 4x4 12 valve Aurora 5K Turbo DragonFly P-Pump KDP Tabbed FASS BHAF Banks Twin Ram 6" Bull Haulers and a few aces in the hole NO FARMS NO FOOD
I.U.O.E. Local 542 "America is formed by heavy equipment"

[smken u]

on torquing your head bolts down how did you do this??and whats the most boost you pushed??did u take them to 125 pounds??and did u pull them all at once and dip them in oil to make them go in easier so they wont stretch??i am thinkin bout doin tht to mine i was just wanderin a brief step by step of how u did it and the highest boost u have been pushin..thanks mike

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97 2500 red extened cab long bed..370 marines,14.5* advance,bd diesel converter with shift kit, high volume fuel pump,191 devilvery valves,only 38 pounds of boost but hopefully gettin my head fireringed and studded