AT Power in the UK have DBW throttle-bodies in sizes up to 80mm diameter which might suit this project .....

I have been intending to use 50mm ITB based on the Jenvey kit (which looks a lot like where the GTM kit in the 1slow370 thread came from), but I am now re-thinking my options.

Look here: Fly-by-Wire Throttle Bodies, AT Power Online Shop

The Unitech 350Z DE engine used a fabricated manifold and a single 90mm TB to achieve ~500hp @ 9000rpm on the Fontana Racing Z33 that is now in Canada (and it now has a HR heads on a HR block with JWT pistons, rods, C11 cams and ITB if my reading of Sasha's posts is correct).

Hmmm .. lots of options..

We made a billet manifold with 90mm throttle for Unitech's DE. But it had a very short stay on the car because they switched to ITBs.

yeah there is only a handfull of guys who will ever pony up cash for this sort of manifold on our cars. cj is best off making something simple for the boost guys and calling it a day profit wise.

Continuing with our adapter plate design and focusing on high power boosted applications and good looks is our most likely path.

Building an intake manifold for all-motor could take several revisions and, not to mention, need a car to test on. Without a dry sump car with every other NA bolt-on, it would be very difficult for us to test different configurations and isolate what changes were from the manifold versus other modifications.

I would be very curious for you to do a couple dyno runs with your stock intake manifold to isolate your curve changes from the long runner and separated plenums. Have you considered doing that?

Maybe, it was done back before all the exhaust stuff and it picked up a ton of midrange but felt choked up top so now that it is freed up it would be different. Only trouble is its a lot of work to do itand isnt straight forward since the throttles forward is all different as well and wont work on the stock manifold.

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third rail, anyone? Well.. I will need one at least! Not sure if I will put the injector bosses in every manifold or not. I could probably use them for a PCV distribution rail, like the GT-R has there on the stock manifold, for the masses who do not need 12 injectors.

Nothing finalized... just showing where one version of the CAD currently sits... and a little evidence that I AM actually working on it LOL.

With some curve in the runners, I have managed to get around the oil filler cap. I have a little preference for straight runners but I assume most customers would rather not have to cut off and block up the oil filler neck.

So far we fit under the strut bar even with the 3rd rail. Plenum and runner inlet shape and size will probably suffer a little to cram under it.

I have to finalize runner taper now and double check cross section area of the stock lower where it passes through the flange point. I would say finalize length... but at this point I think we will cast them really long and then we can cut them to any length we need to later. That way if we do a long runner setup we don't have to weld extensions to the runners.

Then I have to study the runners in the stock lower since they are not all equal in that part. I may end up evening it out a little in the upper... although Nissan themselves didnt feel the variance down there was worth much consideration in their own upper. So I will think about that as I pick away at this.

Our 3D printer will be here on Tuesday and then I will start fitting up prototypes.

Decided to buy one before casting the part. It would be so terrible to cast it first and find a problem then. Its getting too complex to really want to make a billet prototype.. especially with how busy the CNC here is lately.

So I will use the plastic prints to verify final fitment and then off it goes for casting.

You bought expensive 3D printer just to clarify fitment? without taking deposit from customers too?

The370z.com you guys need vendor more like phunk and less GTM

I can relate to the temptation of deposits and crowd funding, etc... however that just is not my business model. even if it takes me a lot longer to grow because of it.

I do not believe in passing off the risks of business to my future customers the way that many smoke-and-mirror companies do these days.

I will accept deposits on things only when final production is underway and only as a way to gauge demand and set production numbers. If there were ever an exception to that, it would be under full disclose as true product status. I cant stand all the "carrots on a string" I see lately.

http://isiria.files.wordpress.com/20...epower-car.jpg

Sorry to rant about that, but its actually been a hot topic between my friends and I lately.

Charles for president!!! :)

phunk, you getting a plastic printer or metal printer?

just plastic. the metal parts will come from final production (billet, cast, and fabricated)

Phunk, once you get your test piece printed could we possibly see what it might look like on the car as you test fit? I'm sure your going to do it anyways but the anticipation is killing me:stirthepot::excited:

For sure I will post it. My 3D printer came in defective and I am waiting for a new motherboard to arrive... probably take a week or so and then I can start figuring it out.

Phunk, I forgot about all this -- glad to see it is still underway :tup:

Do you have any estimates on flow improvements over OEM?

Airflow numbers wouldn't have much meaning to us... the cumulative results we seek will only show relevance on a dyno graph!

........and I'm waiting for my 6" piece of fuel line and 3 studs. :D

Havent put in any hardware orders yet. What are the studs for anyway?

The studs are for the top of the roadrace pump top. I kind of bent mine when I was working on my problem with the fuel hose popping off. Remember? By the way. What is the diameter of the hose?

Nope I didnt know they had bent... I just knew that you had asked for some! Are you sure they are bent? They are pretty strong stainless

The hose is 3/8 (-6)

Yea, they're bent. :shakes head: Did it trying to separate the top from the gas tank. Used a little too much muscle, and a bad angle. They're still usable. But it makes removing and installing the top hard.

Thank you. :tiphat:

Got the 3D printer up and running a couple days ago. Been practicing printing small pieces of the manifold to glue together. Still learning how to use this thing better, but overall its meeting its intended purpose. I just would like to figure out how to reduce warping in the parts to keep a greater accuracy. I will post up a pic or two this weekend. I have already decided to make a little change LOL so that means its definitely helping me.

I had no idea how SLOWWWWW these things are, LOL. takes like 9 hours to print a small chunk of the manifold.

9 hrs uh. That gives you enough time to knock out a quicky,:nutswinger: and have time for a nice lunch. OR coming up with new parts. :stirthepot:

Oh yeah, death slow. Our work only prints stuff at night

Very cool -- looking forward to pics :tup:

Been almost a month since a post. Paypal is ready to purchase this Manifold CJ lol

Fingers are crossed for more developments....

Any News?
 

Still going to be a while. Waiting around for the casting guy to begin working with me. Spring/summer time is the goal! Few more months to go.

Maybe you should come down to zdayz and shoot for a reveal at zdayz:tup:

I agree ^^^^^

what would the cost of these majestic masterpieces? ( est.. 2,500-4,000k)

Uh oh........don't start that debate again please

Brandon had a chance to finish the 35HR reverse engineering for me, so now we officially have perfected the 2 slightly different bolt patterns and relationships with the ports. For those who didnt know, we are making the cast portion compatible with both HR and VHR engines, we will only have to drill a slightly different bolt pattern to the flange during secondary machining processes for either engine... the ports themselves are identical in shape and spacing.

This week I will be updating the CAD and sending off the file to the tooling shop for the final quote and ETA on the cast portion of the manifold. He says he is ready to start working on the project with me. Then I can get back with pictures and maybe some rough price estimates.

So this will be designed to suit HR heads as well as VHR heads on VQ37 block ??

It doesn't technically matter which heads you have, but which lower intake manifold you have. but I do doubt HR rails would clear the VHR heads if you tried to use a HR LIM on VHR heads.

OK, gotcha

Can't wait to see the cast product! Hopefully the price in the end is reasonable and not ridiculous like previous attempts by other company's. Think that was one of the major killers in the past. I so want one lol

Subd for coolness 👍