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Posted: Wed Mar 25, 2009 2:29 pm
by poizen
Gary57 wrote:If you were making that piece you should have made a venturi...
a whattt

Posted: Wed Mar 25, 2009 3:11 pm
by Gary57

Posted: Wed Mar 25, 2009 3:16 pm
by poizen
Gary57 wrote:www.wikipedia.com
yea i did that but what is it for i dont get it shed the light please

Posted: Wed Mar 25, 2009 3:20 pm
by Gary57
It will speed the airflow up as it enters the compressor.

Posted: Wed Mar 25, 2009 3:28 pm
by poizen
sweet il try make one tomorrow

Posted: Wed Mar 25, 2009 3:39 pm
by Gary57
Do you know how to make one?? Its not just a tapered pipe...

Posted: Wed Mar 25, 2009 3:45 pm
by poizen
Gary57 wrote:Do you know how to make one?? Its not just a tapered pipe...
yes i got dranings off google so ill try it going to be one of those r&d thingies

Posted: Wed Mar 25, 2009 3:48 pm
by poizen
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just have to work out sizes and then cnc and away we go

Posted: Wed Mar 25, 2009 3:55 pm
by Pinkfluffybunnys
Just a friendly warning dude.

I did a little R&D on this venturi set-up when it was suggested a while back by a not much unliked friend.

It makes you set-up prowen to surging or boost spiking as the velocity of air increases. You will normally see bigger turbo’s have like little holes cut the housing this is to cause turbulence and control the surge.


I will get a picture garret uses another system to help control this, normally smaller turbo’s don’t do this but with a venture it is possible


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Posted: Wed Mar 25, 2009 3:57 pm
by poizen
Pinkfluffybunnys wrote:Just a friendly warning dude.

I did a little R&D on this venturi set-up when it was suggested a while back by a not much unliked friend.

It makes you set-up prowen to surging or boost spiking as the velocity of air increases. You will normally see bigger turbo’s have like little holes cut the housing this is to cause turbulence and control the surge.


I will get a picture garret uses another system to help control this, normally smaller turbo’s don’t do this but with a venture it is possible


Image

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always wonderd why some turbos had this thanks fluff

Posted: Wed Mar 25, 2009 4:02 pm
by Gary57
You need a CNC lathe hey...

Posted: Fri Mar 27, 2009 10:13 am
by poizen
well i took day off work to do the turbo upgrade here are some pics enjoy

car is to low to fit jack under so must improvise
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back of old turbo it was very white and not sealing on the wastegate plust the wastegate was kinda sticky to open and closed
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had to cahnge timing it moved to 20degrees but not it great it just pushing 0.5bar but ill put other actuator from old turbo that pushed 0.7 bar

Posted: Fri Mar 27, 2009 10:16 am
by poizen
i also managed to get a set of manifold gasket for 20rand so i got two sets to keep for spares considering i read nissan charge 700 for a set

Posted: Fri Mar 27, 2009 10:57 am
by Gary57


just have to work out sizes and then cnc and away we go
You need more than sizes, yo need to work out the curveture...

Posted: Fri Mar 27, 2009 10:58 am
by poizen
Gary57 wrote:


just have to work out sizes and then cnc and away we go
You need more than sizes, yo need to work out the curveture...
dat is what im meaning i got all the formular but if it going to give me prob like pfb said im not going to do it hey