2114 MPFI with custom plenum

[brock1949]

Alright here it is, my 2114 MPFI conversion with 6 65# injectors, Billet rails, LS1/LS6 throttle body 3".

The rail hold downs and throttle body weren't mounted because we ran out of wire on the welder and couldn't find and .035 wire in town on a sat.. We were running the welder how a guy at the engine shop said with a heavy wide bead to make positive seal which came out ok but was kinda a ton of material... hey it was a mig, a amazing big ass miller mig but still would have liked a tig.

Working on porting out that carb flange to make it a little wider to exact match the 2114 and smooth everything out.

http://shaun.accuson.net/turbofit/intake.jpg

 

[qbnkiller]

Re: 2114 MPFI with custom plenum

it looks like you're gonna hook that thing up to your furnace ducting!

 

[brock1949]

Re: 2114 MPFI with custom plenum

lol, when you see it under the hood you don't know if i'm forcing air or footballs into the motor.

That design is every detail i could cram in between the local engine builder that been building 1000 hp turbo motors before i could say the world turbo, and the ideas we talked about the other night. Hopefully that equals out all the air in, washes out all the turbulance, and gives me the best air distribution that the 2114 can do.. With that design it should be as perfect of conditions as you can give the 2114 to distribute the air. Hopefully it works lol

 

[George Blake]

Re: 2114 MPFI with custom plenum

That's exactly what I want to do but on the end of the elbow, have a flange cut that I can bolt the stock throttle body to. Looks good.

 

[brock1949]

Re: 2114 MPFI with custom plenum

George i actually have flanges cut for the end of the elbow that uses a standard i made up so that i can run the Ls6 throttle body but if i decide later i want to run a different one i can just unbolt that flange from the face of the elbow and bolt the flange thats cut to the new throttle body to it. I made 2 extra flanges that can be cut to whatever if i do change throttle bodies.

So it should be intersting to see how its going to work out.

 

[THEMADTYPH00N]

Re: 2114 MPFI with custom plenum

That's exactly what I want to do but on the end of the elbow, have a flange cut that I can bolt the stock throttle body to. Looks good.

 

[George Blake]

Re: 2114 MPFI with custom plenum

Man that looks good. That's exactly what I envisioned. I can't believe they quit making that elbow. I'd like it to come off the driver's side though, I think. The reason being, is I could run an A/A have it go across the front and keep the piping away from everything.

http://www.sportmachines.com/albums/edlebrock/109_0914.jpg

 

[THEMADTYPH00N]

Re: 2114 MPFI with custom plenum

Man that looks good. That's exactly what I envisioned. I can't believe they quit making that elbow. I'd like it to come off the driver's side though, I think. The reason being, is I could run an A/A have it go across the front and keep the piping away from everything.

http://www.sportmachines.com/albums/edlebrock/109_0914.jpg

Pretty sure that elbow is hand fabricated. Doesn't look like a production piece that was made by a company.

 

[brock1949]

Re: 2114 MPFI with custom plenum

regaurdless its a damn good looking peice. Last night we went back through mine and finished welding it, made sure everything was sealed up..(still haven't tested it with pressure or water yet..) But everything is looking good starting to lay out everything on it and figure out how to put throttle and cruise on it..

 

[Moto73]

Re: 2114 MPFI with custom plenum

hey- real nice intakes you guys have there...i am looking to make one for my 1991 s10 that i am building with a Vortech blower. it looks like the design is pretty straight forward, but i dont know how the injectors are held in place...they look like they are just pushed into the bungs. i would like to know how they stay there so i can start building my intake.

by the way, what kind of rails are those?

 

[brock1949]

Re: 2114 MPFI with custom plenum

Mine are holley fuel rails, if i had the time i would have orded them from www.raceprovenmotors.com , thay seem to have the same quality rail for less money and they are super nice guys to work with.

The bungs are machined (kinda drilled out) the injector goes down in and seals in that area and then also pushes into the fuel rail where its machined out, then (not pictured in my setup) i have fuel rail hold downs that keep them in place.

 

[#2875]

Re: 2114 MPFI with custom plenum

looks good. besides making room for a/a piping or whatever do you guys expect to see any performance gains from this? seems like a lot of work when syty intakes are a dime/dozen on ebay.

 

[crazy151drinker]

Re: 2114 MPFI with custom plenum

It looks like a snowblower! I want one...

 

[brock1949]

Re: 2114 MPFI with custom plenum

performance increase.. ehh who knows, i do expect the turbulance to be smoothed out and a little better control of the tunning using that 3" throttle body i am. As i mentioned at the top i've been told over and over about how it will lower intake temps, smooth things out, etc etc and keep everything as perfectly distributed as the 2114 can be.

And i haven't noticed syty setups for a dime a dozen, best deals i've found was upper and lower for 500 + 100 for 2 barrel tb, then 100-300 to have it port matched etc to work on vortec heads.

Thats a 200 dollar 2114 intake, 250ish in machine work and i've got 21 bucks in that plenum and the ls6 throttle body with IAC and TPS sensors was free. basicaly full intake for under 500 bucks with a freaking 4" inlet 3" blade thottle body with the sensors.. i figured i couldn't go wrong.. or could i lol

Who knows gotta mix it up a little.

 

[qbnkiller]

Re: 2114 MPFI with custom plenum

if you were going to use the inlet to suck water from your wet basement floor, I think you've got it pegged! You're gonna have so much air that Michael Jordan will say 'DAMN!'

 

[Tooky]

Re: 2114 MPFI with custom plenum

seems like a lot of work when syty intakes are a dime/dozen on ebay.

Do you have any links to the auctions? I'll take 3 dozen at that price.

I have been looking for a SyTy lower intake for about 2-3 years and never found one cheaper than 300 bucks or so, and that was back in the beginning of my search. I wound up paying 350 just for a lower sight-unseen in unknown condition, and that was the best deal I could find. I'm still in the market for another though, especially if I can get them for the prices you're talking about

 

[brock1949]

Re: 2114 MPFI with custom plenum

there is a syty upper lower for sale on s10forum for 500 and its not selling... If anyones interested then i can link them or go look.

 

[Maxtor]

Re: 2114 MPFI with custom plenum

do you guys expect to see any performance gains from this? seems like a lot of work when syty intakes are a dime/dozen on ebay.

Significant performance gains can be made due to better air/fuel distribution and a less restrictive intake. With the stock intake(s), certain cylinders always run richer/leaner than others. If you tune close to the edge at WOT you should assume you will have some cylinders running leaner than the collective sum. I believe John Gerber (WindedV6) told me when he went from low 11's to his 10.6 run the primary thing that got him there was changing out the stock intake.

Don't get me wrong, you can go fast with the stock upper/lower (mine has the stockers) but it definitely isn't the best design. For the money spent on porting and moving the injector bungs on my stock intake it would have been a better choice to go this route.

 

[Tooky]

Re: 2114 MPFI with custom plenum

I know there are guys out there who have found through airflow testing, that the stock intake manifold does not flow evenly from runner to runner, but I honestly think these concerns are overblown.

Why? I have my setup "tuned near the edge" and I have no problems and the results have exceeded my expectations. I ran a single nozzle of alcohol prior to the throttle body, which would seem to magnify any problems in flow through the manifold as it was not designed for "wet flow". I still have stock injectors so the alcohol represents a significant portion of my fuel. Nonetheless, I was able to sustain AFRs as high as 12.8-13.0 at WOT without detonation and the power was great. Then I added a second nozzle of alcohol to greatly increase the flow of fuel. I would guess that my truck's fueling is approximately 30% provided by the alcohol. I am now up to 25 PSI with 20 degrees of max timing and it's running better than ever. That is leaning Really hard on the stock motor. My attitude is that if there were such an issue in distribution, I would think it would have manifested itself by this point.

I haven't been fortunate enough to experiment with another intake manifold to compare results, but I guess what I'm saying is that great results can be achieved with the stock manifold even when flowing a healthy amount of fuel through it.

 

[Maxtor]

Re: 2114 MPFI with custom plenum

Ibut I honestly think these concerns are overblown.

You must be right, Tooky. The hours I have spent reading plugs over the last eight years in the three Sy's with stock intakes I have owned must be out of the ordinary. Are you honestly saying you are reading your plugs and you are getting an even burn on all 6 cylinders with the stock intake? You must have got the set with magic dust sprinkled on it :tup: .