screamer pipe at 1bar TD04

Fatman

Fatman

Member +
rickie said:
There are people all over the planet who use them and for good reason. Silly of you to say that putting one on a car with high power is pointless, when if their setup requires one, then thats just that.

People don't buy them for nothing, most know exactly what they buy them for and do so with good results.
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Uhh, I never said the wastegates were pointless, I said enormous ones were.

I personally run a 38mm Tial external.
 
C

craigant

Member +
Cheers for the replies all I'm basically bothered about is the sound of the screamer because they sound immense at 1.4 bar so just wanted to make sure they still sound great on 1 bar otherwise I won't bother goin externally gated if they sound crap.
 
Dub-Se7en

Dub-Se7en

Lifer
props to the fatbloke for dropping some nice info, rep :)

i run an EWG setup on mine, i chose external cos my car has always been plagued with creep on the previous ct9 setups and i wanted to rid it once and for all. now, 7 psi to the limiter if i so wish :)

the screamer is a bit love/hate for me, some days i can't get enough of boosting it to hear the noise, others, i purposefully stay off boost to avoid the racket :)
 
finx

finx

Member +
Dub-Se7en said:
props to the fatbloke for dropping some nice info, rep :)
Click to expand...

fat man ur a total fatty lol! hahahaha fatbloke i love it


some good info coming out. i know at 1st some of it seems to be the opposite of what you would expect but if you think about it it makes scene.

larger boost set ups are designed to get max power. if this is the aim then you will only require a small wastegate as when you reach your desired boost level only a small amount of pressurized exhaust gas's will need to be released.

where as smaller boost set ups you require a larger wastegate to allow more excess pressure escape.


as previously posted, hybrid ct9 + wastegate is a very good upgrade. you will notice much more stable boost control and way less creep which is always a problem on these no matter how far the internal gate is ported.



one of the main reasons for going to an external wastegate which some people seem to forget about (especially on set ups where the wastegate has been welded to the exhaust housing of the turbocharger), is that by releasing the pressure before it gets to the exhaust wheel you are reducing the speed of rotation of the turbo shaft stopping overspooling which is one of the main causes of turbo dmamage. (bar excessive oil pressure) and drematicly increases turbo seal and bearing life

it is also of huge benefit to turbo longevity for those which have put increased diameter down pipes on their cars. especially on stock turbos.
by increasing the size of the down pipe there is less restriction in the exhaust flow which also increases the spool speed of the turbo. and this is a problem as the stock turbos dont like to be overspooled and this is the major killer of them.
back in the late 80s they had the same problem with the old honda city turbo's. back then not allot was known about turbos on small engines. and as everyone always does as the cars became cheeper and more accessable they were picked cheep and moddifyed as a price effective go fast car- and at that time they were king of the road bar the grumbly old big blocks.
the biggest problem people had with them was the turbo would shit the seals and bearings. this was caused by over spooling of the turbo due to the common knoledge that bigger exhaust means more flow and more power. so huge down pipes up to 3inch's in some cases were welded in and a few weeks later the turbo would be dead. this was a huge problem as back them turbos were relitvly new tech in main stream cars and a stock honda city turbo was over 2500bux.
somewhere some brainy bugger came up with the idea of using an external wastegate. and it fixed all the probs immediately.


wow i got carried away, but gives you a good idea anyway.
late here so if some if it doesnt make scene bear with me.


cheers
ryan
 
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