I hope i dont blow the welds on my intake manifold, pics of new manifold

[Tulsa_S-13]

Ok this is just me brainstorming, but what if you cut the runners like this, which has been done on N/A KAs and leave about an inch or so on the flange end of the manifold. Than you could put in some GSXR1000 or 750 throttle bodies between the plenum and runners. This would allow for a ITB turbo setup..... I'm just throwing out ideas, although they are far from original I'm sure, but I wonder from a performance aspect how the KA would respond?

Artist rendering (using Microsoft Paint )

[Structure240sx]

something like that is possible, just have to put in the work

i almost have everything done, just hitting a few roadblocks here and there. dyno has to get put off til tomorrow if i can finish up by then

[fiznat]

Ant- do you have a good baseline which we can compare to? ...Something recent, hopefully?

[Structure240sx]

month and half ago



that was at 27psi and 6100-6200rpms, i prolly would have gained another 10whp or so if i held it to the rev limit, i had alot of things to look at and the tach moves really fast. thats my reason for not holding it out to 7200rpms

[1WheelWonder]

I can't wait to see some numbers.

[95_240sx]

Yes they are for sale to anyone who wants one right now.

Tulsa - We have shorter runners, cut about the length you showed, on our drift car.

Rick

[Tictakman]

hmmm, why did u change from the prototype then? any advantages?

Zak

[Structure240sx]

slightly better clearance

the short runners puts the plenum slightly higher being a higher point of the runner

[NateDogg]

I'm looking forward to seeing the numbers. I'd port the runners alot more personally. I'd also move the weld to the outside of the runner. But I'm pretty far from doing up my own mani at this time. So as the current, and only, this one loooks pretty damn good to me.

WD

Hey you're smarter than you look..Porting the runners but having them taper down near the head flange IMO. This will increase mixture velocity and help to increase the homogeneity of the mixture. But thats a lot of grinding and just adds to the costs, which I'm sure wont help sales much, especially since it wont contribute much to peak HP numbers..

Too bad you didnt go to redline on that last one, obviously this intake manifold will be making a living above 4000rpm. Kinda tough to compare with and without going 'all the way'.

[Structure240sx]

the runs are saved on the dyno shops computer. i will have him overlay that run with the new one for a great compraison

[Structure240sx]

sorry forgot to post these, i still have to weld up the coldpipe







look at all that space

[1WheelWonder]

Wow that looks awesome, still cannot wait to see how she does.

[Mikoriad]

Wow that looks great, now it looks like a performce engine. Changes the entire engine bay.

[NateDogg]

I find it interesting that you are still running the OEM radiator. Maybe you could start a new thread and talk about your coolin system a bit?

[sXi]

ahhh.. your car has abs. so does mine.

[Structure240sx]

yes abs is gayyy

yep stock cooling system, works great so long as there isnt any air bubbles in it, like there currently is.

i need to bleed brakes and cooling system. then hope my crap ARC welds on the cold pipe can hold together. i still plan on hitting the dyno this week

[Jookmasta]

hey outta curiosity, how long did it take ya to install the thing? granted ur a pro and could probably do this while ur sleeping with only a screwdriver and one hand but any estimate? id figure it would take a little less than replacing with a factory stock intake mani since there is so much more room to work with right? also, the placement of the throttle body is shifted correct? so that means we would have to redo our cold pipes if we got this mani?

[Structure240sx]

i spent a couple days on it because of my schedule. with school and not being able to work too late, i only get a few hours a day to work on the car.

yes you will have to modify your coldpipe

[hannibal]

Most intake manifolds Ive seen have the runners enter the plenum and end with a bell shaped mouth (aka velocity stacks?). Any advantage to that setup over Xcessive's design?

[NateDogg]

Using a radiused entry from the plenum to the runner is the preferred method. I read that this method can produce over 20% more flow than a velocity stack entry. Unfortunately it was on theoldone.com (aerospace engineer) and now the forums are down

[Nismo_Freak]

Most intake manifolds Ive seen have the runners enter the plenum and end with a bell shaped mouth (aka velocity stacks?). Any advantage to that setup over Xcessive's design?

Typically forced inducted manifolds don't run these, as they can induce alot of turbulence in the manifold with the tops of the bells being in the manifold. They help in smoothing out airflow and slightly increasing velocity into the port, but with forced induction the turbocharger is providing the velocity.

On an N/a application, manifold design is a little more refined and elaborate, and that costs money.

Like Natedogg said, you'd want a flush, radiused entry. Similar to what you find on the valve seat.

[fiznat]

So where are the dyno results already?!?! Im getting impatient!

[WDRacing]

Thats a pretty damn clean head Alan. When I ported mine I spent hours polishing the bowl and runners to get rid of the casting defects and it still didn't look that nice. Did you do that one yourself??

WD

[klattr1]

Thats a pretty damn clean head Alan. When I ported mine I spent hours polishing the bowl and runners to get rid of the casting defects and it still didn't look that nice. Did you do that one yourself??

WD

look at the tiled logo in the background.

http://www.dprracing.com/

[Structure240sx]

i know fiz its killing me

i was fixing a few boost leaks yesterday and was gonna finish today

my makeshift coldpipe was resting against my upper radiator hose. today i pop the hood to check things (been daily driving it the past couple days) and see some water on the battery tray. the pressure the coldpipe put on the upper hose cracked off part of the outlet on the radiator. i should be able to clampp it down enough to drive the car, but dont want to race/dyno it

i just bought a koyo and nismo t-stat from our sponsor IntensePower.com and paid extra to have it overnighted since the deal was so good. i might get to dyno on saturday

[WDRacing]

look at the tiled logo in the background.

http://www.dprracing.com/

Man and I'm supposed to be the one looking at all the details. We get so much forced situation awareness training, I think it may actually be working backwards.

[klattr1]

i hear ya WD.

but back on track, Anthony, good luck with everything. dont rush just to make us internet folks happy. do everything right and take your time!
Modified by klattr1 at 7:17 PM 10/27/2005

[fiznat]

Screw that! RUSH! GO! Come ON we're waaaaaiting!!

[klattr1]

haha; i was trying some reverse psychology lol

[Nismo_Freak]

Man and I'm supposed to be the one looking at all the details. We get so much forced situation awareness training, I think it may actually be working backwards.

Sounds like you need more beer my friend.