What are the pro's and con's of the two? tia

 

internal < external

 

yes but give me details =]

 

not to sure my self.........but if youre i ricer like me then youll love the way the external sounds when it cracks open

 

IMO - they both work fine.

They both do the same thing. . .

 

Internal wastegates are just simple and cheap if the turbo you bought came with it. It is easily adjustable with a boost controller. You don't have to worry about plumbing up a dumptube. Etc. They are flow limited but even then, a standard .48 A/R T-3 with internal gate comes on 2.8 liter engines and don't have problems.

External wastegates can usually flow a lot more because they have much larger valves. Thus they are preferred in higher boost and flow applications. They are also much more expensive, more prone to failure, and may be more difficult to fit into your engine bay. They are adjustable by either different springs, external adjustments, or boost controllers.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DragSource &raquo;</TD></TR><TR><TD CLASS="quote">IMO - they both work fine.

They both do the same thing. . . </TD></TR></TABLE>

Externals just do it better with less chance of creep.

 

The internal/external part of it doesn't make a bit of difference man. It's the size of the valve and inlet/outlet that make the difference.

If your internal gate had the same specs as your external gate it wouldn't make a bit of difference.

Some turbo's have internal w/g upgrade options.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beepy &raquo;</TD></TR><TR><TD CLASS="quote"> more prone to failure, </TD></TR></TABLE>

Can you elaborate on that? I've never had any "failure" problems with my Tial. It works better than any internal gate, and holds boost more solidly than any internal gate I've ever seen. They are not more prone to failure.

 

I've read several reviews from Tial users with ripped diaphrams, and problems with the gate doing odd things as a result of running race gas w/ the wrong type of spring.

They're not "unreliable" - they just have problems from time to time like every other part.

 

maybe that dude was thinking like . . . . internal w/g's come from factory so its not gonna mess up, but external wastegates are usualy aftermarket so say some newbert buys an external and installs it and ***** up . . . i guess that would make external more prone to failure, but ide assume if u installed it right, it'd work just fine

 

I have heard more horror stories about the Deltagate than any other w/g.

 

i havent, i've heard stories about the MANIFOLD deltagates seem to be always mounted on, ones where the gate comes off of only one runner..

on high HP cars, this is a bad design. my deltagate is great. i plan on upgradeing eventually, but i'm not sure what i will go to.

 

deltagate = crap, will have problems.

Tial = good, can't go wrong

Difference between external vs internal wastegate is an internal wastegate will start to open from the force of the exhaust gas before you get to your desired boost level, thus causing you to take longer to spool up to your desired boost level.

External gates can be held closed via boost controller to only open up once it hits a desired psi level. I don't know for sure, maybe internal gates can do this too...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike1114 &raquo;</TD></TR><TR><TD CLASS="quote">deltagate = crap, will have problems.

Tial = good, can't go wrong

</TD></TR></TABLE>

 

Internal gates can do that too. Many people look down on internally w/g setups, and most of them drive hondas. Mitsu and Nissan guys will swear by internally gated turbos. It is cheaper, and easier, granted the flow characteristics will not be as great, but it is still pretty good. The HKS drift silvia is internally gated and runs about about 1.5 bar. But if you are going for big power, you will need a external w/g. Choose wisely!

 

So external gates are good for High boost/high flow and internals are good for low boost, simplistic setups.
All I know is that my turbo MX6 has been internal gated for 250,000 miles.