Custom manifold/plenum/TBs
 

So, I've owned the Z not even a year and have already come to the point where NA options become very limited. I don't particularly want to go the FI route, and cams are not only expensive, but don't have proven results (in the States), and would be a pain in the *** for the entire process. Next logical option: intake manifolds and TB. I've read through the majority of threads I can find on the topic. In summary..

1 - Kinetic made a flashy looking, but ultimately failsome manifold due to no testing or airflow mapping.

2 - GTM has the GTR conversion option, but we know how that business is going right now. This required new fuel rails, cutting intakes, and a new strut brace anyways. The primary advantage to these are proven power handleing on the GTR.

3 - Synolimit is porting stock parts, but we are awaiting his dyno results.

4 - JUN has BBTBs for a ridiculous $2 grand, and there are a few manifold prototypes, but I don't think that ever reached the US or production.

5 - Mine's TBs for $1.5k, again rediculous

6 - Z1 bored stock TBs (62mm vs 60mm stock) At $900

8 - GTM's manifolds, require custom intakes/TBs which were on 1slow370's Z: HERE

9 - Z1 and Motordyne plenums, seem to be minimal impact throughout the powerband, just a little higher HP for Z1 at the redline and motordyne has slightly more torque throughout. These are simply modified stock plenums.

I've got access to CNC, 3d printing (option for plenum), and working on access to a flow bench. So i'm basically looking into the cost and power benefits of actually designing some of these. I plan on creating some CAD/Solid Works designs over thanksgiving break when I have time to get all measurements on my stock parts.

In the mean time, I'm open to any suggestions/advice/constructive criticism. Are there any options above that I'm missing? Also waiting on synolimits' results to see if this is even a worthwhile project.

sub'd

Im in

Definitely not a bad idea. Im sure someone at Vivid would be interested in distributing them if you made that happen.

Hello,

For the throttle bodies I think you forgot Mine's from japan and its $1500 throttle bodies lol

I would say for the throttle bodies, to board them out will be the most cost effective. You do want to make sure that you do not board them out too much that it will affect the airflow at the other end. For the 3D printing, I've heard that it is now possible to print functioning car parts, my only concern will be the type of material you use, you have to make sure 1. it does not melt 2. the elasticity is high enough that it does not change when the engine is running at high temps (ex: track)....BTW somebody needs to jump on those cams from JUN and see if they are really worth it lol

You missed the mani/tb's that GTM did for 1slow370. World Record NA VHR Build
Might be worth a look. I'm sure others would be interested in this if it wasn't from GTM.

Also, might want to go with non-metal components to help combate heat soak.

I'm sure they would! The problem will be getting in contact with them, wish there was a direct phone or email to them :inoutroflpuke:

I was talking about if Vicious were to build some. We are always on the look out for cool new products that build power. :tup:

I know I guess what I wrote was a bad joke lol...BTW keep us updated on the black Friday specials I might have to use some money I have saved up lol

Wow, lots of quick and positive responses.

@6MT, of course material would need to be considered for 3d printing, particularly for heat and structural integrity. I also agree someone should jump on the cams, I think some JUNs for $800 on here? I don't want to deal with that work myself. lol

I'm in for this, and don't forget Z1 offers TB's now, 895$ I think for the pair.

http://www.z1motorsports.com/g37_370...oducts_id=7591

the problem in the end will be that a whole new manifold will be costly and no one will want to fork over the money.

the TBs end up having someone local port and polish them for cheap since paying 900 to Z1 or 2k to the others is just ridiculous.

i'm hoping something different happens here thought :tup:

a $500-750 manifold with good gains would be lovely.

Well this sounds like a great undertaking and I wish you luck. Hope you have a flow bench, engine dyno, and a lot of time.
The stock system is pretty efficient for a street motor, it just needs to be massaged as a package, Cleaning up the port entries after the throttle bodies is a big help. The turns are sharp, this hurts flow at higher rpms. Port matching the lower to the upper also adds improvement to flow. A bigger issue is the oil vapor that you get from the crankcase ventilation system that is contaminating the combustion process. The used manifold I picked up was all slimy on the inside and it took a lot of degreaser to get a clean enough surface to port. For the money and time, improving what you have is probability the best bang for the buck. For a race engine, different story.

And then you woke up on the dry side of the bed :rofl2:

Good thought though

thats the pricing point where they would sell.

Z1's is like $400 or 500 i think and it sees little gains.
the kinetx one was beautiful, saw 0 gains on NA nor FI, and cost 1k
pretty much anything now is a cleaned up OEM 350 airbox. sorry not paying someone triple the cost of the OEM plastic manifold for them to play with a dremel for a hour or so. i can do that at home if i really wanted.

we need a solid gaining and good looking manifold. something that isnt stupid expensive although with the R&D and labor it's going to be.


let's face it the manifold aveune is a tough one for us. the 370 has been out for 7 model years now and this is where we are at.