I have 2 BR Intake plenums for sale. They're available with a 52 or a 58mm TB plate. The location and # of 3/8ths vacuum fittings are also decided by the purchaser. As far as finish there's a couple different things I can do. I can polish it, just put a nice grain on it or leave it just as it comes for you to do with what you want with it. Powdercoating is an option but I'll have to charge whatever I get charged for it. My powdercoating guy does real nice work for what I thought was a good price. His wrinkle black looks just like factory which is what I went with.
Heavy porting of the lower intake is required as well as an aftermarket fuel rail. It comes with all the attaching hardware. With a little contortionism (spelling?) you can remove this plenum while it's still on the car if you so desire.
This is for those of you that have a modified top end and are looking for something that will help the head see as many cfm as possible. Why have a head that flows 190cfm if your intake only flows 140? Kind of defeats the purpose of spending all that money on a killer head only to choke it off with a sub standard intake don't you think?
A lot of people say that adding a big plenum add's lag and kills low end hp. From my setup I've found this not to be true at all. I have a 58mm TB on mine, with a ported head, slightly larger than +1mm valves, a tubular header (JRB for you old SDML guys) and an true S60 turbo. There is Zero lag and plenty of bottom end power. I start seeing positive boost at 1700rpms and have full spool by 2k rpms where before I'd start seeing boost around 2100 and full boost by 2500rpms. Yes I need a bigger turbo now. The top rpm range is absolutely amazing. And I'm running it on a 2.5 which are known not to rev. Well I've already hit the 7200rpm rev limit twice on accident. It sings above 3500rpms like a 16v and pulls hard from 1200rpms all the way to redline. Throttle response is instantaneous with the 58mm TB. So much so I've totally had to readjust my throttle foot to suit it.
I also have phenolic spacers to match. It really helps keep the plenum cool. The lower piece get's very hot after sitting in traffic and I can lean and work on my plenum right after popping the hood if I have to. They're matched to the plenum and gasket so they just bolt right on. I won't be machining any more spacers ever so once they're gone they're gone.
Pics of their status are here. http://www.pnw-sdac.org/gallery/main.php?g2_itemId=2666
Once I have all the options you want I weld them up and add whatever else we agree on.
Some pics of the prototype being mocked up and a plate with the feature's cut into it placed on an already ported lower half to see how much more needs to be ported out. The Plenums go all the way to the gasket with a 45 degree angle cut into the floor to help flow into the port.
http://www.pnw-sdac.org/gallery/main.php?g2_itemId=2533
And finally being put together on the car and finished.
http://www.pnw-sdac.org/gallery/main.php?g2_itemId=3074
The price is $325 for the plenum and $50 for a phenolic spacer if purchased with the plenum.
Contact me at Oakley1@ix.netcom.com if your interested.
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Originally Posted by GLHNSLHT2
