adiffrentcity
Bent Rodder
Yea I think you'd have had to make the carb adapter, or modify a 90* elbow made for running a throttle body off a carb'd intake (efi conversion) Wilson manifolds and others make them.
Are you still thinking of using the stock fuel pump and referencing it? Mine was done at 6 lbs of boost. It would lose prime and I'd have to crank and crank the engine to get the car to start after a good hit of boost. AFR's were pretty good right up to the point of no fuel
I have a 2300 for you that has most of the hanger18 mods done... for about $50 +shipping if you want it. Phenolic float, bigger jets, plugged choke rod hole...ect. send me a pm if you're interested. I also have an odd little dizzy that has a boost retard unit on it that you can have.
Does it have the choke tower already cut off and such? I'm going to be using a failry low hat. PM me about this dizzy, I'm curious about it. Also which 2300 is it? I've noticed there are a few sizes in that range, but not all are a 350/500 which are the two i'm interested in. I have a 2300 coming but i believe it is a 285 or something. Could be wrong. I may be interested in yours though.
SO the issue with the fuel pump your saying is that the car would die during boost? Or just after the run, the second startup would be difficult? And yours was referenced and put out small F/R. That is good information. I keep leaning towards electric... more... and more...
$30 seems cheap for a pump that can keep up with a turbo motor. you need 5psi fuel pressure over what ever psi of boost you are running. 10psi boost+5psi fuel pressure=15psi fuel pressure needed to overcome the boost and still provide adequate fuel. if its not strong enough you will have the same problem of it falling on its face going dead lean. what electric pump are you planning on running?
Serj22 said:I'm assuming for the boost pressure, I would set the regulator to 5pounds on vacuum, so that way it increased 1:1 on the boost level, correct?
sounds about right for setting up the pressure. as for the pump, i asked on a theturboforums a while back and they led me to the walbro 255. wasnt a steal but will be adequate for the power im planning on making. found it for $90 on ebay with free shipping. came with the fittings and mounting hardware.
http://www.walbro.com/media/39718/Rotarypumps5-8-13.pdf
i will be running the inline. seems to be a pretty popular pump.
Okay, another $200 spent. $50 soon to come on some more stuff, but I just got me the final exhaust pieces for the exhaust minus the tubing for the downpipe, which I'm hoping an exhaust shop will maybe have and be able to fab up. I'm doing this in such a way that the exit on the turbo will be shot straight back, then down near the stock exhaust location and hopefully mount up before the cutout. The U bend I got has 6" legs on each side, and a 12" diameter, which should space the turbo away in a couple different options depending on where I cut it.
02 Sensor bung and plug: $5.00
U Bend exhaust tube in 2": $20.00
Thick Exhaust flange to mount to manifold: $4.00
28 x 7 intercooler and different 2 1/2" pipe bends: $140
Aluminum pieces to assemble carb hat solution: $25
Thinking this may shoot over $1k, with the addition of what's going to amount to $250 worth of fuel delivery equipment... but... wishful thinking right?
The vent tube extensions and all the "crutch" stuff is something I have researched fully. Matt who was on this thread a bit ago and offered me his old Holly has a 18deg limited distributor he is selling me if I can get him to respond back to me. lol. The BRPV and Vents were on my first list to do along with the other hangar 18 mods.
I have been thinking through everything as far as detonation goes. With this being a daily driver, I want to limit things as much as possible as far as total destruction goes. I was going to have the dizzy limited, a pod will be mounted on it that retards the timing under boost, but advances under vacuum as normal. There will be (what I think) is a pretty considerably sized intercooler on it, and if I ever have an issue, then you know I'll start shooting meth if I have to.
Basically I look at everyone's builds, and the second I see things like "the pump gave up and now I'm going with electronic fuel delivery" I just jump right to the electronic fuel delivery. No need to go backwards with something that didn't work. Even if 99 other people did it and it worked, I go with the feeling of doing it more "bulletproof" so to speak - because I can probably determine that 100% of the people that used the electronic delivery had a higher success rate of it working. There's no need to skimp on money when I am under budget and that will be the reliability portion of this build. If it doesn't get enough fuel it'll lean out, and that would be catastrophic.
The other thing I contend with is almost every other slant 6 car that's turbo-d is a race car. Maybe I'll race mine, but the goal is to have it operate for a 30 minute commute, every day, and to make it just work awesomely.
Also Bill, as an example, I have thoroghly watched your valiant as well, and I showed pictures of it to my dad because he didn't believe you could do "blow through on a carbed engine. You gotta put a pressure box on it" so that helped me in convincing him that he's not always right. Lol. And I showed pictures of the end of your header to my welder to show him what I wanted to do for the wastegate.
Also if I make 250hp, I'll be happy. I'm really just banking on 200 which is like $0.75c per hp on this build which means anything above I'll be incredibly happy.
Here's something to show your dad... https://www.youtube.com/watch?v=7QzUfV8iTpQ
It's a blow-thru slant six that as no air box... and 500 hp.
I wasn't kiddding about the absolute necessity of obtaining a wideband meter ffor your A/F ratio... it's critical.
Do yourself a favor and make that a priority; you'll be glad you did.
Thanks for the kind words... :cheers:
I am getting a wideband. That's what the bung is for that I ordered. :evil3: lol. I called it an 02 sensor, but I meant the A/F is what's going there. That's for the downpipe.
I showed him those videos too. His exact words were : "you can't just blow it through a carb without a pressure box, it just blows fuel ALL OVER THE PLACE and that's all it does. BEEN THERE DONE THAT. I did a twin screw (insert car name I forgot here) and it had two centrifigal superchargers and the went to a pressure box and it didn't really do much at 5lbs. Adding a turbo to your dodge will probably not do anything." lol. I love my dad but sometimes...
Bill, while I'm not looking for an 11 second car necessarily, I can't help but borrow from your build and the one you pictured.
The carburetor is in the mail along with the dizzy, and I'm very excited about that whole deal. Thanks Matt, if you ever jump back on here and read more of what I'm doing.
A couple last minute changes: Decided against a white valve cover and went with wrinkle black. I think that will look nice on my newly painted motor. I changed the entire color scheme again, so it's a custom electric blue 1shot mix I made.
Valve cover looks good. Kind of a cool finish for a $6.50 spray can by VHT.
While at autozone I also saw a VHT can of blue, white, or red exhaust paint. I chose blue and am going to try it again. I sand blasted the manifold this time so hopefully it sticks unlike the white. I baked the white after it was dry to the touch and that may be why it failed. I reread the instructions this time and it says to bake after it has dried for 7 days. Didnt catch that before.
Then with the manifold I'm going to find a way to jam the flap closed so it only directs exhaust downward, and maybe there's some way to seal around the top of the flap. I was thinking RTV copper or JB weld, but dont know how either would survive, or if they would survive in that environment. The carb I'm using is bolting to my supersix iron manifold with a modified inlet (one oval, rather than 2 circles). It has a provision for EGR, but I blocked that with a piece of steel I made that bolts where EGR would go.
We'll see how the manifold turns out after I bake it. I then am going to probably drill it all the way through where the larger bolt goes through to cut the chances of a bolt sticking there (and breaking again) just to make life easier.
The intercooler and piping kit showed up, along with one piece for my intake carburetor hat. The other one still has yet to get here. The intercooler is a lot larger than I was hoping for but at $120 for the cooler, all the piping, sleeves, and clamps - I'll live. I will drop the bumper and grill and get to mounting it. I am really hoping to leave the battery where it is and come into the engine bay on both sides - driver's side under the battery tray, and passenger side between the horns and radiator. I'lll likely remove the horns, paint them black and move them somewhere behind the grill if I have to. Hopefully if my measurements are correct, it will be just under the parking lights and the ends of it will be right about on the same axis as the lights. The other option is to move it further down, and maybe cut the angled bracket that goes from the radiator frame. This would put it down fairly low, and I'd risk curbing it when parking perpendicular with a sidewalk. Maybe I'll find a piece of steel to put in front of it if I go that route.