s5 turbo on 12a na engine
Thread Starter
Joined: Jul 2005
Posts: 939
Likes: 1
From: queens n.y.
its my 12a turbo kit . three weeks of work. used what i could find in my garage and at my friends shop. a old wrx invidia exhaust reused the flanges and muffler using a borla xr-1 as a resonator. the turbo is a stock s5 not using the internel wastegate . the carb is a holley h.p. 390 boost prep with ported secondary maybe 410 cfm. metering blocks are weber power plates never used them be4....? so stay tune as i tune.......... i may reproduce 4 sale . for 12a lovers
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looks good kinda makes me wish I still lived in Astoria to see how it came out, produce for sale huh, I actually have a s4 setup and the exhaust mani is what is holding me up, keep us posted
Looks great thou.
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did you machine an s5 turbo flange? Could you explain how you did the wastegate a little more? Do the two runners collect at the "wastegate box" or do you somehow keep them seperate to preserve the divided design?
Thread Starter
Joined: Jul 2005
Posts: 939
Likes: 1
From: queens n.y.
i used a plasme cutter and drill press to make the flange.yes the 2 runners collect at box.. and i ported the turbo little to get rid of flat parts ,.. i made a v inside
Nice work man!!
Rene at RX3mist used to, or still may produce tubular manifolds that could incorporate the S4 or S5 turbo flange if you desired. His manifolds were quality pieces, and were going for $250-$300 when he was producing them. If you search on here, you should be able to find his phone number.
Secondly, search out FB II posts on here, he is one of the original Blow through Turbo 12a guys, and his posts should outline a lot of information for anyone who is curious about blow through...
Rene at RX3mist used to, or still may produce tubular manifolds that could incorporate the S4 or S5 turbo flange if you desired. His manifolds were quality pieces, and were going for $250-$300 when he was producing them. If you search on here, you should be able to find his phone number.
Secondly, search out FB II posts on here, he is one of the original Blow through Turbo 12a guys, and his posts should outline a lot of information for anyone who is curious about blow through...
i got s4 turbo flanges if anyone is interested in them just pm me,i had a few made a couple months ago.this is good for those that want to make their own turbo manifold using the stock s4 turbo.
but nice work you got going here,nice project.
but nice work you got going here,nice project.
Looking good, I'm sure it's going to be SICK fast!!!! Keep us posted on them runs, I'm local so I'll be there on your corner to hold u down. Give me the heads up, when & where & I'm there!!.. ;-/ Peace!






















