So, anyway, I was reading Road & Track this month and found the definitive answer for which intake solution works best: KnightXYZPDQ and Sparks's, na klar.



That's from the new Hennessey Venom GT, a haxx0red Lotus Exige with the LS2 Corvette "small"-block V8 boosted to 1200 horsepower. Now, can you see what is feeding that 6.whatever liter engine? Yeah, two cone filters directly attached to short pipes that run straight into the twin intake manifolds. I'm guessing that welded on bit with the cable running to it is part of the EGR and the black metal with the aluminum bands is the MAF.

So this is a street car, that happens to be capable of 270 MPH, but it's still a street car. So if that intake solution is good enough for Mr. Hennessey, surely it's ideal for our equally huge V8-oh, that's not right... Ideal for our half-the-displacement, two-fewer-cylinder, naturally-aspirated VQ35DEs?

 

G37 air intake. Twice the fun. (Two MAF's? Ug.)

 

Some G35's 350z's also had 2 MAF's, but now this thread is just out of hand.

 

Problem solved, then.

 

wat

 

Nissan has finally jumped on the twin plenum bandwagon. It's by far the best design for a V6 behind ITBs as proven time and again on other platforms. Wish I had the resources and tuning capability to build one... Length tuned, 1 degree tapered runners formed out of sheet metal and ending with a venturi stack into a separate plenum for each bank with a single 60-70MM TB and intake for each. For now I'll just have to settle for hoping this ghetto sheet metal SSIM project works out.

 

What you neglected to state was that there are two massive turbines between that SRI and the manifolds.

Yes you did stated boosted though.

 

Please tell me that you see the big azz turbos that these "pipes" run too. Completely different car, completely different setup, completely different purpose. And no, that is not an EGR...

Didnt they have twin plenums on the 300zx/j30 already? And also, nissan did have ITBs on a couple factory vehicles. Along with some other manufacturers a while back.

 

Wow, these intake threads are still showing up all these years later

 

This gives you cause to head-bang? Really?

Intake mods are affordable, accessible, and seemingly straight forward enough for even the most feeble minded enthusiasts to wrap their brains around, even if they don't always get it right.

I'd be surprised if intake threads suddenly stopped showing up. Enjoy it, or look away until the Electric Maxima hits the streets.

 

 

Seems as if lately they have gotten a bit more depth and breadth in the fact that we are discussing it in far more detail these days and including additional dynamics such as intake manifold design, and electronics. Of course there are now repeatable data concerning AFR and resonance effects on whp. But really, yes the newbie's still ask the same 'ol elementary intake question. And then the cool kids come in and shed some much needed technical light on it such as sparks, essential, and a few others.

 

Not all intake mods are for the feeble minded

 

Nice holder for six candles. Would look great on my coffee table



Can't wait to see the end results...

 

intake manifold /= SRI or CAI

This Thread = 2 advanced for j00.

Your basic IM project is nothing compared to the power made by bolting on the Berk intake. Get out or ban.

 

Hey it's always possible my IM project will lose more power than a Injen intake

 

true... lol. we'll see.

 

I didn't think one had to be an English major to detect sarcasm.

 

That's my bad. Its hard to detect sarcasm on the org when you still have threads seriously asking about electric superchargers and what not. I gotta add you to the list of sarcastic members along with the likes of Rochester, Moncef, datdude, etc.

 

So what were you doing here? Cleaning up the sharp edges and cast flashings and smoothing out the intake runner entrances? Looks like the VIAS shelve has been deleted completely....??? Sparks you know anyone who's extrudehoned one of our 3.5 intakes?

 

Cut off the stock plenum to give those leftmost runners room to breathe and increase the volume with a new plenum, plus deleting the shelf, giving myself room to polish the runners and the venturi entrances, and a new elbow to go with it. Little more progress now.

 

On extrude honing, I believe I read an old thread (2007ish) in which a 4th gen person had a fully stock 02VI extrude honed and didn't get amazing results. I think extrude honing would be great if your manifold is already optimal for your application (plenum size, runner length/size), but also insanely expensive. In the case of a stock 02VI, it is certain to gain 4-5hp (maybe a little more) over what it already makes, but they drop off like a rock above 5800 as is.

 

So how are you gonna clean up the weld internally when put it back together? Did you baseline the Oem IM as far as flowbench numbers thru each runner before the butchering? Are you gonna flow the modded IM was welded back together? Yeah I did my 3rd gen IM the same way so you should see crispier throttle response!

 

I will be cleaning up the welds internally as they are made (it has 5 sides not including the one with the runners, doesn't have to be put together all at once) and in addition, we will not be welding on the interior as you saw in the previous picture. Those welds on the inside were purposely built up in order to grind and form them, all welds from here on out will be exterior only. A weld on the outside leaves very minor bumps at the very worst and more often just a clean surface on the opposite side. So worst case scenario, I have a couple of spots on the elbow plate that are not cleaned up which conveniently will see the least air traveling across it.

I still have a vias deleted stock intake manifold on my car. Will be installing this intake manifold and getting my A/F tune dialed in, then going to a dyno and testing them against each other back to back just swapping maps on the UTEC to avoid time consuming tuning (with identical ignition timing maps, of course). Will also be dyno testing 3" intake w/stock maf (70MM) vs 3.5" intake w/ LR MAF (82-83MM) on the same day. This testing will be done after cams and supporting mods are installed, so I'm not sure how well it will apply to a bolton car. However the cams are quite mild so it shouldn't be a huge difference. With more plenum volume, I am actually expecting slightly LESS throttle response as basic physics come into play. Hopefully more top end power to go with it, though.

This discussion is far off topic of this thread, though... I've already made a thread about this project if you want to continue discussion in there. http://forums.maxima.org/all-motor/6...heorizing.html

 

My question concerned the exterior ones only,......sometimes things flow thru or form weld spots when welding externally......which could in turn became a airflow disturbance.....

 

I am relatively certain that I answered your question.

So basically, I will be cleaning up the inside throughout the entire creation of the manifold until I cannot anymore at the elbow plate which will be the last that gets welded on, and we will weld that carefully.

 

I'll have mine off one day to do my spacers and I'll see what's up and what can be improved upon in a much less minor way compared to yours.....