20V Turbo Plenum with Velocity Stacks

**takai** · 11-09-2007, 03:01 PM

Yeah, that one can just be flipped and the inlet fixed up.

**Bazooka** · 11-09-2007, 03:13 PM

Originally Posted by Ben Wilson

Couldn't you just turn it up side down? IIRC, the 20v trumpets have the bolt holes evenly spaced top and bottom......

Possibly but I think we have come to the conclusion that this is not the best example out there. For the price and having to modify it I do not see the value. I would be better off buying just a set of good trumpets and building my own plenum around them.

**Ben Wilson** · 11-09-2007, 03:31 PM

Mate, if you're turbocharging it don't stress about the manifold design too much.

A 5% flow gain means a lot in a NA car, but you can make it up easily in a turbo car with a little more boost. As long as it flows evenly, the manifold will work fine.

**takai** · 11-09-2007, 03:58 PM

It would probably cost the same if not more to build your own.

**blacktop** · 11-09-2007, 07:00 PM

These guys are high quality!!!
http://www.roadandtrack.net.au/

**roadsailing** · 11-09-2007, 08:16 PM

if you feel like DIY, i'm looking at getting a bunch of flange plates made up to suit 20 valve quads, i only want a set for myself but the place has a minimum order quantity. watch this space!

**Biggo** · 11-09-2007, 08:33 PM

what i did was fiddle around with some pvc pipe to detirmine the legnth i wanted them. turns out my 2nd set was soooo good im sill yet to get them made up in ally hahaha

....yes i am drunk, excuse spelling