Intake Manifold Design

adal89 · 05-28-2012, 11:23 PM

I am working on a dual intake manifold design because I had an extra throttle body assembly sitting around. I already wired it up to make sure both work together, but I am working on this design. It has equal length runners. The sides are set up by odd and even sides with a center intake for more equal flow. I also designed it to be sort enough to not hit the oil filler neck. The base would be wider for fuel injectors, but this is what I've got so far. Let me know if anyone has ideas.

**kdo2milger** · 05-28-2012, 11:39 PM

i can see the potential in it, as my previous 370z had dual intakes...

the only thing i could see that's not really an issue but more of an engineering challenge is the positioning of the intakes in proportion to the engine bay. i.e. the battery would have to be relocated in order to have a mirrored passenger side intake. Or an alternate designed dual intake format would have to be conceived.

would be an awesome creation to test though.

adal89 · 05-28-2012, 11:46 PM

Thanks for the quick reply. I am actually putting this in my 07 frontier that I put the vk in so I forgot about your battery placement. Would it be able to run mirrored intakes if the neck was shortened?

**kdo2milger** · 05-28-2012, 11:51 PM

not really. take a look, the battery would need to be moved.

i would almost say to relocate the battery to the utility storage on the bed itself

adal89 · 05-29-2012, 12:02 AM

What about relocating the power steering reservoir? It seems like that may be easier.

**kdo2milger** · 05-29-2012, 12:04 AM

i believe it has metal in/out lines...

imo battery relocation is easier. there are kits for it all over the internet for automobiles in general.

titanss · 05-29-2012, 05:26 AM

If it does not hit the oil filler neck it will not even come close to the battery.

**VinylImagez** · 05-29-2012, 09:45 AM

relocate TB flanges, need a custom cai, 1 piece for 1 MAf, I was going to try this modifying a stock IM and adding 2 TB's

**VinylImagez** · 05-29-2012, 09:47 AM

did you get the 2 throttle bodies to work in sync?

adal89 · 05-29-2012, 12:50 PM

Titan ss thank you for your input on the clearance. I was thinking the same thing, but as I said I'm not looking at a Titan engine compartment so I couldn't be sure.

Vinyl I thought of that too, but a main purpose of me doing this project is to get more equal airflow as opposed to stock and front mounted tb's would be no different. Thank you for bringing up the MAF because I forgot to mention this. I am running uprev so I will most likely just reprogram the ECM to read the sensor input doubled from stock and still only have to run 1 MAF. About the tb's ya they run in sync. It was actually way easier to get that workin than I thought it would be.

**VinylImagez** · 05-29-2012, 12:56 PM

are you running a Titan ECU or is it a stand alone?

pcg_k25 · 05-29-2012, 01:21 PM

Quote:

Originally Posted by adal89

Titan ss thank you for your input on the clearance. I was thinking the same thing, but as I said I'm not looking at a Titan engine compartment so I couldn't be sure.

Vinyl I thought of that too, but a main purpose of me doing this project is to get more equal airflow as opposed to stock and front mounted tb's would be no different. Thank you for bringing up the MAF because I forgot to mention this. I am running uprev so I will most likely just reprogram the ECM to read the sensor input doubled from stock and still only have to run 1 MAF. About the tb's ya they run in sync. It was actually way easier to get that workin than I thought it would be.

To get equal airflow on front mounted TB's you would have to taper the plenums to the back cylinders on each bank.

adal89 · 05-30-2012, 10:05 PM

Titan ECM. I did consider the tapering, but in all honesty it is just one more piece of engineering that I don't want to deal with. Also I do plan to put on dual turbos eventually and the side location makes it more accessible for that routing since I am going to put the inter cooler for each on the outside just above the wheel wells since I am fiberglassing a hood with vents for it. Long project, but the manifold is the first step.

CVTitan05 · 05-30-2012, 10:09 PM

My battery is already relocated to the bed, I can test it for ya

adal89 · 05-30-2012, 10:12 PM

If mine works and dynos well I was gonna see if anyone else wanted to test a second for cost. You willing to come to Indiana when it is ready?