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-   -   dual wastegate using external and internal? (https://www.homemadeturbo.com/forced-induction-7/dual-wastegate-using-external-internal-95002/)

marcj 09-03-2008 02:46 PM

dual wastegate using external and internal?
 
I've had this idea lately, since I have a T3/T04E with a internal setup, and a manifold using an external, why couldn't I utilize both simultaneously to prevent boost spike? I could just T off the line going to the external and run it to the internal as well.. any input?

marcj 09-03-2008 02:49 PM

Re: dual wastegate using external and internal?
 
btw, i'm going for fairly large numbers on a b16 daily driver with 9:1 c/r.. hoping for ~400 minimal, so I was thinking the single 35mm gate could use some help

buk9tp 09-03-2008 02:51 PM

Re: dual wastegate using external and internal?
 
yes. The problem with internals is they usually don't stay shut and cause you to build boost later/not build as much as you want. But if all you're worried about is spiking, I don't see why it would hurt anything.

1slow91 09-03-2008 05:21 PM

Re: dual wastegate using external and internal?
 
trying to regulate both wastegates would be the trick
they arent gonna wanna open at the same time so youll have to use a pair of boost controllers and set them independant of each other so you can match the boost between them

Hitchhikkr 09-03-2008 05:46 PM

Re: dual wastegate using external and internal?
 

Originally Posted by marcj
I've had this idea lately, since I have a T3/T04E with a internal setup, and a manifold using an external, why couldn't I utilize both simultaneously to prevent boost spike? I could just T off the line going to the external and run it to the internal as well.. any input?

Boost spike= the wastegate's inability to bleed off exhaust quickly enough. IE with the proper manifold/ext. gate you shouldnt have this problem anyway.

If your running the internal gate on such a large turbo and having spiking issues, switch to the ext. gate and rig the int. gate shut.
Keep it simple. Dont overcomplicate a simple concept.

xternal 09-03-2008 06:26 PM

Re: dual wastegate using external and internal?
 
Just keep it simple :S run a 38mill

marcj 09-03-2008 07:39 PM

Re: dual wastegate using external and internal?
 
true.. i've seen a lot of high hp setups running dual 38mm ext. gates so i figured that running the internal would be a cheap solution.. i might still try it for shits and giggles

Hitchhikkr 09-03-2008 11:46 PM

Re: dual wastegate using external and internal?
 

Originally Posted by marcj
true.. i've seen a lot of high hp setups running dual 38mm ext. gates so i figured that running the internal would be a cheap solution.. i might still try it for shits and giggles

What sort of power level are you shooting for? Most of us nogs dont have the income to afford a 'high hp' setup. Much less keep it running...

marcj 09-03-2008 11:51 PM

Re: dual wastegate using external and internal?
 

Originally Posted by Hitchhikkr
What sort of power level are you shooting for? Most of us nogs dont have the income to afford a 'high hp' setup. Much less keep it running...

400whp on pump gas.. similar to dustins setup (before he ate a valve)

Scott-EP 09-03-2008 11:55 PM

Re: dual wastegate using external and internal?
 
400 on a b16 with pump gas, ehhhh. not likely.

im not saying it cant be done, but i have never seen it

marcj 09-04-2008 01:09 AM

Re: dual wastegate using external and internal?
 
wishful thinking I suppose.. planning on experimenting with a meth/water injection setup too

Cray91 09-04-2008 11:42 AM

Re: dual wastegate using external and internal?
 
Just run a good external and you will be fine.

Scott-EP 09-04-2008 04:03 PM

Re: dual wastegate using external and internal?
 
with meth you have have a better chance

con 09-06-2008 12:20 AM

Re: dual wastegate using external and internal?
 
crystal meth?

txdohczc 09-06-2008 02:58 AM

Re: dual wastegate using external and internal?
 
what other kinds of meth matter?

Scott-EP 09-06-2008 08:49 AM

Re: dual wastegate using external and internal?
 

Originally Posted by highroller54
crystal meth?

isn't that the meth injection everyone talks about?

2GeclipseRST 09-06-2008 12:27 PM

Re: dual wastegate using external and internal?
 
You have to heat it in a spoon before you shoot it.

Mad horsepower for about 3 days!


I toyed with the idea of running external/internall. Then i gave my 38mm to stubbs for a cdm blow off valve.

K.I.S.S.

Keep it simple, stupid.

boostedhfrex 09-06-2008 01:14 PM

Re: dual wastegate using external and internal?
 

Originally Posted by Cray91
Just run a good external and you will be fine.

x2 either run one or the other. Either get one of the aftermarket internal gat housing that has a much larger wastegate flapper and open your ex. housing up with a die grinder....or just use a 38 or 40mm external gate

2GeclipseRST 09-07-2008 04:29 AM

Re: dual wastegate using external and internal?
 
------- with an internal gate is such a pain in the dick though.

Might as well go external so if the turbo takes a dump, you can sell the bitch on ebay and still have a wastegate that you can do whatever with.

I HATE clocking turbos with internal gates. My t25 was a ------- chore and a half in my faggot non turbo eclipse. I had to chew up a good starter plate to make a bracket for the can. ---- an internal gate.

Stubbs, i'm a retard but you're enjoying the fruits of my retardedness much, i'm sure.

I'm drunk and i'm getting off the internet to get some dirty nasty sex. She's clean, i'm the one who hasn't showered after a long day of work. ZING! DIRTY DICK! SCHWEATY BALLS!

Scott-EP 09-07-2008 08:53 AM

Re: dual wastegate using external and internal?
 
that wastegate has been badass for me.

Only problem now it I think I seized my engine last night and ruined my turbo. Good think I have AAA. I am going to pull the oilpan today and see what I find


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