saw this intake over at 60*v6.com and had a idea or maybe just a brain fart :shrug:
anyways i could do this with my lim

and use an adapter like this to connect the tb

or i could make it all one piece,though if i didnt and the megasquirt pisses me off to much i could run a blowthrew carb setup

 

Yes you could.

 

any thoughts on it.
i was shooting for a 5inch long runner and mid sized plenum.this would deff only give me a 3.5-4 inch runner.though i quess i could always go from a 3000 stall speed converter to a 3,500-3,700 but im thinking id hurt street driving even more

 

I like it... Lookes like the person who made it cut it to work with the dizzy.
Good find.

 

Could you not just use the carb intake, or a s10 TBI and put an adapter on it like that?

 

yeah they did,its a gen 2 intake like the one im modifying,u can make the dizzy fit with nothing more then a grinder with a flap wheel on it,u need to remove about 1/8th inch of material for it to clear.
dale those intakes dont fit the aluminum heads i dont think,werent all those engines iron headed?

 

Nope, Iron head and Aluminium head are quite different.

I just remembered the bigger issue with the genII intake, it wasn't the lower, it was the upper, I believe that it iterferes with the dizzy. I also noticed that you only used teh base of the dizzy with no cap, surprisingly the cap adds quite a bit of girth.

Anyway, that design should work ok, but I'd recommend using an injector per runner, as fuel distrobution will be much better.

You could still lengthen the runners, and just have them point up into the plenum area, I know there are intakes that use this idea, try serching for pictures of a Vortec lower, that should show you what I mean.

Myself, I'm going to be going for short runner with a huge plenum, most likelye once I get to the point of building my all out Frankenbeast.

 

why a huge plenum,everything i come across says shortrunner/ mid to small plenum for a turbo motor.
i planne don doing the one injector per runner,im gonn atry to leave the injectors in the stock locations,even if i have to change the angle.if i have to change the angle ill just look fo ran injector with a better spray pattern that will work with whatever angle i lay them over on
i had the cap on it i just didnt have it on when i took the pics

 

Big plenum for street driven, small for all out race engine that sees limited RPM changes.

Large plenum helps with the initial off idle, or quick throttle change responce. Think of the plenum as an area for "air" to be "stored", when the throttle is opened this storage of air helps get the initial charge to the cylinders.

There's no way to keep the same angle as the stocker injectors with the above pictured design, since the fuel rail runs right down the middle, and the injectors branch off that, yeah it is two rails, but they are olnly seperated by about an 1" to 1.25", and are connected with the fuel regulator and sitriution block between them. The above pictured plenum would be in this same area, possibly covering that area.

Also some theories and testing have indicated that firing the injector at the back of the valve may not be optimum. Look at F1 injector location, they are ABOVE the runner. If I can find the vid I'll post the testing I think it was the Renault team was doing with the engine on the dyno, shows the fuel spray.
I'll probably try this design or elements of it when I build my manifold.

 

Im sorry, but I can't help but say those are some mighty sexy welds on that adapter. Who made that?

 

Here's the video I was talking about:

http://video.google.com/videoplay?do...39630149644203

 

Here's another F1 vid, you don't see the injectors, but pretty cool video none-the-less.

http://www.youtube.com/watch?v=WwrTtWChQ0Q

 

ive seen those vids there pretty cool.thnx sixshooter helpful as always,im headedover to the shop in a lil bit to go package my old heads and stuff.so im ognna spend a lil time and make some carboard mockups on the gen2 intake ill take some pics of what i come up with and post them later

cooltec that adapter is from a website that sells them.most likley those are robotically welded though they may be hand welded its hard to tell.tig welding aluminum produces a very nice clean weld like that.dirty aluminum or cast aluminum with high sand content on the other hand dosent look so nice when u weld it

 

O $hit, I forgot about that. My bad

 

Mabye Im just stating the obvious, but I was just trying to picture how it would look together and that dosent look like it will work with a stock hood. Also couldnt you just run a TB like on the 4.3?

 

well when i do mine im not gonna use an adapter,im just gonna make it so the manifold makes that bend so i can connect the tb.so it will be shorter.(even without doing that it may still clear a stock hood,ill have to measure the stock manifold hieght vs this design.i could use on of the tbi style tb's but then id have to use a tbi/carb hat since i run a turbo.not only that but im prolly going to a 70mm+ throttle body

 

If i were you man i would just throw a massive blower on it. I didnt read the whole board but i saw the pics and i read your first message and im just gonna say that what you need is a good sized blower. (as long as your in a warm climate where it dosent rain otherwise your car will suck in rain into the intake=air/feul/water=destroying your engine=bad news)

 

()...........

the loops over there dude.......