External Waste Gates

[KwS]

Moving parts in an exhaust system are always a problem for long term reliability.
That's one of the reasons why wastegates use poppet type valves instead of butterfly valves. Any butterfly valve will eventually jam. GTOs use an "active exhaust" which is a butterfly valve, You won't find one still in working order.
BTW I've built 2 turbo setups without wastegates. Only for lowish power street cars but if the turbo is sized sensibly, they're not essential.Chances are I'll be building another without a wastegate, Only because I can and it keeps the cost down.

Steve

So if i fit a wastegate, will i blow my head gasket?

Man, im confused. Some of you guys are saying smaller WG for more power, but others are saying bigger for more power. Which one is it?

[steve murch]

i can so see how forums leed people astray

[frost]

Moving parts in an exhaust system are always a problem for long term reliability.
That's one of the reasons why wastegates use poppet type valves instead of butterfly valves. Any butterfly valve will eventually jam. GTOs use an "active exhaust" which is a butterfly valve, You won't find one still in working order.
BTW I've built 2 turbo setups without wastegates. Only for lowish power street cars but if the turbo is sized sensibly, they're not essential.Chances are I'll be building another without a wastegate, Only because I can and it keeps the cost down.

Steve

So if i fit a wastegate, will i blow my head gasket?

Man, im confused. Some of you guys are saying smaller WG for more power, but others are saying bigger for more power. Which one is it?

if i where you I'd listen to Steve murch, he wouldn't be in the turbo game for so long if he was just guessing and telling fibs,

[steve murch]

all good i just need to advise those who are interested in the future