These plenums will be on sale soon. New intake runners, ported, matched, machined and polished to suit intake manifold. Has been flow tested and no leaning out of cyclinders occured. Has 25% more flow over standard manifold. Bolts straight upto head with all fittings supplied. Has excellent flow with no restriction, no U bends Was just seeing if anyone would be interested in these plenums?

price will determine any interest mate.... looks good though! Some original photos have not been recovered yet.

what vlt-dreamer said flames looks wikked but id prob prefer mine without if i were to buy one... hopefully cuts costs ;-)

Not too bad, but your market will be limited to high performance applications with aftermarket computerse, as you have no provision for the standard idle control and accessories. I suggest that you put bellmouths on each runner as well or at worst, a small half donut. Bellmouths are proven to increase flow by upto 33% due to the nature of drawing in air form a wider angle and in a more laminar way. Also looks like you need to run a custom fuel rail and a custom top radiator hose fitting for the head. Will these be included in the kit, or are they extra etc? If you can provide REAL flow statistics from a flow bench and compare it to other plenums that would be good for the customer so they can see where your plenum ranks. The real test is getting a car with a stock plenum dynoed, then installing your plenum to see any torque or power improvements. As a rule of thumb, longer runners, such as the NA Manifold increase bottomend torque, but can hamper top end power. Your plenum is a classic example of a drag plenum with short runners tuned for topend poewr. Cheers

Darkstar makes some good points If u have answers to these i would be interested depending on price

Likewise to what stockvlt said!! p.s. the flames are a nice touch.

im no professional, but shouldnt the volume be equal everywhere, and not get smaller as it does towards the rear??? Also how come u guys dont go longer on your runners? or is that a good length ?

was checking that tapering out too, i think it might be to add a bit of compression as the air gets towards to rear cylinders, to prevent them receiving less air than the front ones. not sure though, seems weird.....

As the above photo's are of an unfinished plenum, these plenums come with full custom rail and water outlet. These photo's are unfinished product only. I will post some more pictures up next week. Also i'll show before and after dyno's- with plenum. I know some of you may think flames seem a bit lame but it was thrown in as something different. They can be purchased without flames.... I will also have prices on these babies soon, may be a little bit dearer than JD's because of the full custom manifold (lower runners). I have be told that this plenum has had bell mouth openings fitted. I should have taken step by step photo's.

Does that cash filled plastic bag (and contents) come free with eadh purchase Some original photos have not been recovered yet.

hey Davitt there is also another user selling similar (the whole setup) for around the $700 mark. Just letting you know so that you have a price to start at

" As a rule of thumb, longer runners, such as the NA Manifold increase bottomend torque, but can hamper top end power. Your plenum is a classic example of a drag plenum with short runners tuned for topend poewr." Sorry darkstar... but whos thumb is this a rule of??? I agree it works in old free o ate's and the like, but I have witnessed, read about and heard about that this is not true! Longer runners promote a better top end when forced induction is introduced due to the higher air speed when the air hits the back of the valve. Thus better cylinder filling.

Benno is that for your car? Is it made local here?

Quote: Originally Posted by JET-6 Benno is that for your car? Is it made local here? Yer mate wardy's making them. He's started his business from home, got every machine you could imagine-and the brains. Makes everything from catch cans, custom inlet-exhaust manifold, awesome work!!!!!!!!!

Good old Wardy, damn havnt' seen him for ages, time to say g'day i spose!

Longer runners give more topend while short runners give more low-mid power. Look at a V8 with tunnel ram.

Quote: Originally Posted by ijd Longer runners give more topend while short runners give more low-mid power. Look at a V8 with tunnel ram. not really.. the stock holden v8 efi manifold has very long runners and no other manifold out there matches its low end torque

you have to factor in cam timeing as well, supercharged a vs clubsport... made power all the way to the rev limit... no good. standard manifold (power ported) advanced cam timeing 6 degrees bought the power band down to a useable level and made a heap more power. (better air velocity in the inlet manifold at certain rpm)At the end of the day, you have to set up your engine to make power at a cretain rpm band. The 10 million dollar question is when exactly do you do to set your engine up to be optimal at perticular rev band???? and one have any answers??? eg. I have read that long exhaust runners promote better topend power (turbo manifold) How ever have a look at the HKS drag R32 and its exhaust header runners are quite short???

Quote: Originally Posted by RB3-747 hey Davitt there is also another user selling similar (the whole setup) for around the $700 mark. Just letting you know so that you h ave a price to start at sounds cheap!!! does this also inclued custom made runners each tunned and ported to suit. custom fuel rail and injector bosses custom made to your injector size? who ever makes these must have there own cnc router, flow bench and other various machines yer? but sounds very cheap. maybe round about price i'm not sure.

i make the plenums mentioned by RB3-747. No, they have std non-turbo vl runners. The reason i have chose to work with these is due to the runner length being more equal, once cut compared to turbo runners. i have considered doing a setup similar to those you have but is too expensive and time consuming if i was to do it myself. the other reason is that fact that it allows for std fuel rails which have been proven to supply enough for big hp engines (once modified) and also plenty of space at the back of the plenum to mount fittings for map sensor, wastegate, boost gauge, std vl fittings and keeping them neat and out of sight, which can not be achieved with straight runners. no i dont have a cnc router or flow bench, but easy access to them i do have. flow bench and dyno results for mine will be available by the end of next week. good luck.