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External Wastegate Possible?

Woody1

By Woody1,
in Engines & Forced Induction

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Woody1 Enthusiast

Woody1

Posted
Posted (edited)

Hey guys, i dont know alot about skyline's i just got mine a few weeks ago.

I have been told that it is not possible to run an external wastagte because R33 skylines Gtst's have an internal wastegate?

I have taken some pictures with the heat sheild removed and it looks likes the wastegate is external to me and is running back into the exhaust, would i just pay for somone to remove the pipe going into the exhaust seal the hole and make a larger pipe coming out so i get the flutter noise?? or is there alot more to it then i have been told... :) can somone give me a rundown on how this works and what i need to do?

Thankyou

http://img148.imageshack.us/my.php?image=0909061312zb0.jpg

http://img245.imageshack.us/my.php?image=0909061311xf6.jpg

Edited by Woody1
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Adriano Grand Master

Adriano

Posted
Posted

Thats an internal wastegate, this means that the "flap" that controlls the boost pressure is in the turbo exhaust housing, its just that your dump pipe has a separate pipe for these gasses, why would you wast to run an external gate, it is possible, although the whole job would be fairly expensive(probably $1200) and gain you no power, and maybe a defect too if you have it venting to the air.

paulr33 Grand Master

paulr33

Posted
Posted

the wastegate and dump have nothing to do with flutter or "cooler noises". you should do some reading on what wastegate is and how it works and why an external wastegate is pointless on the stock turbo. the flutter is known as compressor surge, do a search on it. its often listed as flutter and is nothing more than air being chopped on the compressor wheel, causing damage

wilch Grand Master

wilch

Posted
Posted

I have an external wastegate, but I also have a bigger turbo, and a modified exhaust manifold to suit. So yes, it's possible.

But as everyone said, do some research (use the search function, and google). I don't really think you understand what a wastegate actually does.

Woody1 Enthusiast

Woody1

Posted
  • Author
Posted

Thankyou guys no i have no idea and i am not very good with computers either lol, i have seen a few cars using a system that makes a flutter noise that causes no damages but i dont know what it is called, maybe i am using the wrong name, but thankyou all the same for your helpful information.

Adriano Grand Master

Adriano

Posted
Posted

Try putting a pod filter on it this should give you the desired result, if not then you will have to fit an adjustable recirculating blow off valve and set it up with some extra preload. Backspin is what YOU want to hear, and this is the way to achieve it.

drag-on silvia Rising Star

drag-on silvia

Posted
Posted
Thankyou guys no i have no idea and i am not very good with computers either lol, i have seen a few cars using a system that makes a flutter noise that causes no damages but i dont know what it is called, maybe i am using the wrong name, but thankyou all the same for your helpful information.

unfortunatly despite what you have been told, the noise you are wanting to hear IS compressor surge and even in its minimalist form causes damage to your turbocharger. unnecessary stress on the internal components of your turbo charger especially on the skyline turbos in not what you want and really defeats the purpose of blow off valve which is designed to rid the system of compressor surge and so on

Rolls Grand Master

Rolls

Posted
Posted (edited)
Thankyou guys no i have no idea and i am not very good with computers either lol, i have seen a few cars using a system that makes a flutter noise that causes no damages but i dont know what it is called, maybe i am using the wrong name, but thankyou all the same for your helpful information.

If you want the flutter noise get a pod filter and block off your bov. This will cause the air to go back out through the compressor getting chopped up and then back out the pod. This will give it the flutter noise, no one has really proved itll damage your turbo, but no one has proved otherwise.

Some older turbo cars eg HR31 skylines etc didnt come with a bov from factory and ran fine, so Id say very minimal effect on the life span of the turbo if any at all.

I bet someone told you it was 'wastegate flutter' and thats why you want an external wastegate :) , if so hit them over the head.

Go to www.howstuffworks.com look up turbos and wastegates on there, it gives a very easy to understand basic explanation of how it all works. Great website for learning the basics.

Edited by Rolls
someonestolecc Grand Master

someonestolecc

Posted
Posted
A dealership told you that it was wastegate flutter?

Youd think that someone that deals with cars would at least have a clue how they work.

I disagree here. Dealers usually don't know anything. Same as the "guys at super cheapbarn".

Mid 90's it was always "the guys at harvey norman said x about my computer".

Woody1 Enthusiast

Woody1

Posted
  • Author
Posted

I went down to the specialist and he said it is imposiable to get this noise but i think hes full of S&^T because i have a mate that has a external wastegate coming out of his turbo that makes this noise, but if i have to replace a turbo to get it i say no thanks =O ill just keep my skyline and buy a gtr in a year or so.

Rolls Grand Master

Rolls

Posted
Posted
I went down to the specialist and he said it is imposiable to get this noise but i think hes full of S&^T because i have a mate that has a external wastegate coming out of his turbo that makes this noise, but if i have to replace a turbo to get it i say no thanks =O ill just keep my skyline and buy a gtr in a year or so.

Did you even read what we said? its not the wastegate, its from having no bov and a pod.

Its frustrating when you tell someone something and they completely ignore you.

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