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Rb20 Internal Wastegate Screamer Pipe?

chalky

By chalky,
in Engines & Forced Induction

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chalky Community Regular

chalky

Posted
Posted

Ive seen many movies on youtube and seen a couple vl's and skylines with screamer pipes but they all are external wastegates.

Iv came across this one someones sellin on ebay and was wondering if this can actually b done on an internal set-up?

http://cgi.ebay.com.au/ws/eBayISAPI.dll?Vi...=tab%3DWatching

I had a look on youtube and theres a few movies with internal screamer pipes but they may just say that??

So if this IS possible would there be any power loss/gains??

Or would it just sound like it has somethin majorly wrong and "choof"?

Any help would be great guys

cheers chalky

sickr33 Rising Star

sickr33

Posted
Posted (edited)

i disagree with the two above statements.

yes it you just bolt one on it will sound like crap.

this i due to the constant exhaust leak from the main pipe to the screamer pipe.

this problem can be fixed with a divider between the two pipes in the back of the turbo.

most screamed pipes you buy have a divider but it is no were near big-enough

to fix this problem i made up dome shims out of some steel sheets i had laying around.

i also used some exhaust gasket for the final shim to create a near perfect seal.

this took me about 3.5 hours including the time to take the turbo off and put it back on on my mates RB20.

the most time was taken in shimming the spacer to suit the rear housing of the turbo.

i suggest you get your hands on a set of digital vernier calipers. so you can get the clearancers as tight as possible.

so in short yes they sound like crap strait out of the box but can be modified to sound good but is time consuming.

you may experience slight power gain's depending on if you exhaust is restrictive.

also we put the rb25neo turbo on at the same time witch made a big difference.

BTW when done right sounds like real gate!!!!! :domokun:

good luck

Edited by sickr33
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