1. how effectively is the charge getting mixed in the chamber?
The charge is actually the sum of the collision of two columns of air, one saturated with fuel, the other bone dry and they are expected to fully homogenize in the chamber before it gets compressed and lit.
To me that sounds completely impossible and very inefficient.

2. how much hotter is that dry valve than the wet one?
The incoming charge has a cooling effect as it washes over the valve; how much I don't know. I do know that one valve is bathed in a super rich charge and the other again gets bubkis, air only. That dry valve has got to be hotter that the other. That could create a possible detonation source.

It makes me wonder if getting an even fuel flow might unlock some power, perhaps raise the boost threshold. You could perhaps modify the sub manifold to mount eight smaller injectors or mount four further back in a custom manifold and knife edge the splitter between the ports.

Discuss.

The other thing that comes to mind is that the 4 port head used on the EDM CA's was created AFTER the 8 port head. I would have to say that Nissan must have realized something about the 8 port head that made it worth creating a whole new cast for the head...

True but the 8 port head must have been Rand D for a few years prior to production. Also, what about all those crazy high hp CA we keep seeing. Are they 4 or 8 port intake vehicles? Common sense would lead me to believve they are 4 port for maximum peak air flow but that is just a guess.

So its basically a wash then, kinda sounds like the intake flow doesn't really matter to make high hp.

not 100% on how the canisters work, but from what I understand thats what the idea behind them was. better MPG as you run on fumes instead of the fuel itself.

Quote, originally posted by r34 gtr »

Who gets rid of their CA's? People who suck, thats who.

I plan on running meth injection, if I ran it through that other port by drilling and tapping a jet into the "dry" runner, then I would have the cooling effect on that valve too, and would have mixing of two fuels in the combustion chamber. It would also be very easy (and baller-status) to do.

Quote, originally posted by Jesda »

Side note: People in the mortgage industry do a lot of cocaine.

ryan: It's not that I think he's retarded. It's that I was the one that gave him his gold medal at the special olympics. I KNOW tim is retarded. I hope I never meet him in real life actually. I'm like 6'2" 185lbs. Tim is prob like 6'7" 300lbs and eats live baby sheep for snacks during the day.

SoOn tO cOmE : 5 lug brake upgrade, R32 MAF,KA TB,444cc injectors, aluminum one piece driveshaft, bucket with 4 point harness, Greddy BOV, Standalone,turbo timer...

If you could say, hypothetically that you found (examples only) 10-20 hp or 5-10 nm through the rev range, what would the cost v's performance gained ratio be?

Also when you say stock manifold being a restriction, do you mean an untouched manifold or a ported and flow tested stock manifold?

http://forums.nicoclub.com/zer...r-lol

Heres the fake greddy "freddy" intake on ebay. Evidently the casting is rough....but guys cut em in half and port them. The price is right for a lil experimenting.

http://cgi.ebay.com/ebaymotors...ZWDVW

Modified by mbmbmb23 at 10:36 PM 7/11/2008

Quote, originally posted by mbmbmb23 »

Get a greddy football intake and make a conversion plate to bolt it up to the CA middle intake (butterfly passage).....then relocate the injectors to the greddy manifold....delete the butterflies......jb weld the OEM injector holes. Plug in an SR top mount injectror fuel rail if the CA's doesnt work. Im pretty sure the greddy will work with top mount inj. You may have to hog out the butterfly passage....or.....weld the greddy to the 4 intake runners RIGHT before the butterfly passage.....like the custom CA manifolds weld on. Heres the fake greddy "freddy" intake on ebay. Evidently the casting is rough....but guys cut em in half and port them. The price is right for a lil experimenting. http://cgi.ebay.com/ebaymotors...ZWDVW Modified by mbmbmb23 at 10:36 PM 7/11/2008

I've always said, butterfly valves = weak sauce. I'm much happier without them.

I honestly like this idea. I'm running megasquirt right now and adding a RPM based meth injection into the dry secondary butterfly port may yield an very easy wet port setup. If anyones got a spare 8-port intake manifold that they are willing to sell I'd totally like to try that idea.

edit: So looking into the system. I'm finding a few small problems. will fitting the meth jet near the beginning of the secondary butterfly port be too close? or does it spray kind of like an injector and have the time to cool and atomize? I'm not really familiar with meth injection.

Modified by chausaster at 3:02 PM 7/13/2008

Just say no to drugs man

Oh but I got so interested.... I can't stop now..... So going on after several hours of looking around and reading up. It seems that if 4 jets were ran near the beginning of split in each secondary butterfly ports you should still get a good mixture of methanol and air into the system to give sufficient cooling for the system and create a wet secondary butterfly port.

I've found in the process of this a cheaper water\methanol injection kit that should suffice. http://www.enginerunup.com/ these guys have a cheap little kit that comes with most of the stuff needed to run the 4 port injection.

http://cgi.ebay.com/Nissan-Sil...l1318

This intake mani doesn't have any ports for fuel injectors. You may want to have some. Also If you live in the wonder winter weather land like I do 5 months outa the year. it may be good to have a spot where the fast idle stuff can sit.

Keep a gangbanger employed so they don't get involved in destructive things like drugs or democratic party membership.