Previous Thread
Next Thread
Print Thread
Page 1 of 2 1 2
what about putting a carb on a magnum motor? #1285461
08/14/12 07:38 PM
08/14/12 07:38 PM
Joined: Mar 2004
Posts: 300
St.Louis ,Mo.
7
72sat Offline OP
enthusiast
72sat  Offline OP
enthusiast
7

Joined: Mar 2004
Posts: 300
St.Louis ,Mo.
going to use the efi intake, and put a carb on it. 2 barrel holley carb will fit lengthwise, will have to re-tap width. but what kind of problems could I expect with this combo.

Re: what about putting a carb on a magnum motor? [Re: 72sat] #1285462
08/14/12 08:24 PM
08/14/12 08:24 PM
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383 Offline
Too Many Posts
70Cuda383  Offline
Too Many Posts

Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
is the vehicle a EFI vehicle? or are you swapping it into an old ride?

the only problems I see you having, is that the manifold is designed to be "dry" the stock manifold has a large open plenum, with runners that wrap up and around the intake. think dual carb, cross ram intake runner length, but wrapped up into a barrel shape. I don't know that atomized fuel will flow through that very well.

aside from that, if it's a computer controlled vehicle, it won't like that the fuel injectors don't respond anymore (unless you leave them installed and hooked up so the computer can see them "working") and the computer won't be happy that it can't see the MAP, TPS, IAC.


**Photobucket sucks**
Re: what about putting a carb on a magnum motor? [Re: 70Cuda383] #1285463
08/14/12 09:29 PM
08/14/12 09:29 PM
Joined: Mar 2004
Posts: 300
St.Louis ,Mo.
7
72sat Offline OP
enthusiast
72sat  Offline OP
enthusiast
7

Joined: Mar 2004
Posts: 300
St.Louis ,Mo.
sorry I did'nt explain. yes it's going in a older truck, and yes i'm leaving the injectors in.

Re: what about putting a carb on a magnum motor? [Re: 72sat] #1285464
08/15/12 02:14 AM
08/15/12 02:14 AM
Joined: Oct 2005
Posts: 6,048
Back home in PA
B
BulletBob Offline
master
BulletBob  Offline
master
B

Joined: Oct 2005
Posts: 6,048
Back home in PA
Fuel Puddling most likely
I bet that beer keg makes for 1 heck of an explosion!

Re: what about putting a carb on a magnum motor? [Re: BulletBob] #1285465
08/15/12 07:48 AM
08/15/12 07:48 AM
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383 Offline
Too Many Posts
70Cuda383  Offline
Too Many Posts

Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
Quote:

Fuel Puddling most likely
I bet that beer keg makes for 1 heck of an explosion!




exactly!

If you did this, get a new manifold.

if you're set on using a 2bbl carb, you could pick up an M1 intake, uses the same throttle body as the stock intake, but it's a single plane, down flowing intake that would probably do better flowing "wet" air.

but, if you're going to get a new intake, you might as well get a carb intake without the injector bungs in them. I think most of them are 4bbl patterns, but I've got a 2bbl to 4bbl adapter that gives you the original TB bolt pattern


**Photobucket sucks**
Re: what about putting a carb on a magnum motor? [Re: 70Cuda383] #1285466
08/15/12 11:51 AM
08/15/12 11:51 AM
Joined: Jan 2003
Posts: 16,376
D
dogdays Offline
I Live Here
dogdays  Offline
I Live Here
D

Joined: Jan 2003
Posts: 16,376
It's been tried and it doesn't work. Reasons have been listed above.

Save yourself some trouble and either buy an intake built for the Mag bolt angles, or modify an LA intake to work. It isn't that hard.

R.

Re: what about putting a carb on a magnum motor? [Re: dogdays] #1285467
08/15/12 12:18 PM
08/15/12 12:18 PM
Joined: Aug 2012
Posts: 51
Texas
C
ChristianCuda Offline
member
ChristianCuda  Offline
member
C

Joined: Aug 2012
Posts: 51
Texas
I knew using the barrel intake directly won't work for my scenario. I think where I am heading is to cut up the barrel intake use the valley tray area, flanges and water crossover and welding on intake runners up to a carb plate. basically building myself a single plane intake and since I have all the material I can do this for less than what it would take to buy and modify a LA intake or buy a Magnum intake. Besides I will leave the injectors in there because eventually I can use it for an efi setup just mount a throttle body and finish up the programming on my DIY EFI project.

I will post up some pics this weekend once I start cutting on the barrel manifold.

Chris

Re: what about putting a carb on a magnum motor? [Re: ChristianCuda] #1285468
08/15/12 01:37 PM
08/15/12 01:37 PM
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo Offline
Too Many Posts
DaytonaTurbo  Offline
Too Many Posts

Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
It won't work. You'll see why when you start cutting up that intake. Do yourself a favor and forget this idea and just go and get yourself a proper intake manifold.

Re: what about putting a carb on a magnum motor? [Re: DaytonaTurbo] #1285469
08/15/12 01:44 PM
08/15/12 01:44 PM
Joined: Aug 2012
Posts: 51
Texas
C
ChristianCuda Offline
member
ChristianCuda  Offline
member
C

Joined: Aug 2012
Posts: 51
Texas
You gonna send me the money for it? I am working with what I have right now it may not work it might but it will be fun to try and won't cost me much if anything. On the other hand I probably will have more cash on hand later on down the road so can change it out to see how that works then.

Re: what about putting a carb on a magnum motor? [Re: ChristianCuda] #1285470
08/15/12 04:12 PM
08/15/12 04:12 PM
Joined: Jan 2003
Posts: 16,376
D
dogdays Offline
I Live Here
dogdays  Offline
I Live Here
D

Joined: Jan 2003
Posts: 16,376
We've already talked CC's project to death. The OP wanted to know if he could just slam a Holley 2-barrel on top of the FI barrel intake. That's different.

R.

Re: what about putting a carb on a magnum motor? [Re: ChristianCuda] #1285471
08/15/12 04:34 PM
08/15/12 04:34 PM
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383 Offline
Too Many Posts
70Cuda383  Offline
Too Many Posts

Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
Quote:

You gonna send me the money for it? I am working with what I have right now it may not work it might but it will be fun to try and won't cost me much if anything. On the other hand I probably will have more cash on hand later on down the road so can change it out to see how that works then.




Good luck on your project, let us know how it turns out! It would be interesting to see what you come up with.

Factory barrel style intakes aren't worth anything but scrap anyway. nobody wants them for performance builds, and every stock motor has one, so you end up tripping over them in the junk yards. hack it up and see what you can do. worst case scenario is that you take a worthless stock intake worth $5 in scrap aluminum, and end up with multiple pieces of aluminum, also worth $5 in scrap.


**Photobucket sucks**
Re: what about putting a carb on a magnum motor? [Re: dogdays] #1285472
08/15/12 05:22 PM
08/15/12 05:22 PM
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo Offline
Too Many Posts
DaytonaTurbo  Offline
Too Many Posts

Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
Your time is worth nothing to you then I take it. Like I said, go ahead, chop up a stock intake, waste a bunch of time and end up throwing it out. That's what I think is going to happen. But please, prove me wrong and post your results.

Re: what about putting a carb on a magnum motor? [Re: DaytonaTurbo] #1285473
08/15/12 07:10 PM
08/15/12 07:10 PM
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383 Offline
Too Many Posts
70Cuda383  Offline
Too Many Posts

Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
Quote:

Your time is worth nothing to you then I take it.






time is always worth something, but I laugh whenever I hear someone say this trying to discourage someone from trying something.

Hobby time is Hobby time, and last I checked, NONE of us get paid for our "play time" I've done things the hard way before, simply because my wallet was empty, but I had "play time" available.


**Photobucket sucks**
Re: what about putting a carb on a magnum motor? [Re: 70Cuda383] #1285474
08/15/12 09:31 PM
08/15/12 09:31 PM
Joined: Mar 2004
Posts: 300
St.Louis ,Mo.
7
72sat Offline OP
enthusiast
72sat  Offline OP
enthusiast
7

Joined: Mar 2004
Posts: 300
St.Louis ,Mo.
I'm hearing (most likely won't work)(probability will puddle)does anyone have any real world experience doing this.

Re: what about putting a carb on a magnum motor? [Re: 72sat] #1285475
08/15/12 10:57 PM
08/15/12 10:57 PM
Joined: Oct 2005
Posts: 6,048
Back home in PA
B
BulletBob Offline
master
BulletBob  Offline
master
B

Joined: Oct 2005
Posts: 6,048
Back home in PA
Uh let's see. That intake has roughly a big freaking plenum with a big flat floor that was designed for port fuel injection that the power curve dies around 4800 rpm.
There's no designated fuel vapor distribution & would be like having the biggest tunnel ram on a bone stock engine.
Look around for the problems associated with large plenum intakes especially the Race Hemi Crossram
It has roughly the same style ports in the floor with a plenum area over each set of ports
At least with the Crossram there was a carb directly over 2 ports on each bank

That keg will give new meaning to the word PowderKeg
Don't have anyone you love around when you crank it
I'd mount the carb on thin plywood so it can be a popoff valve as well like the ProStock guys used to do.
Most of all you can bet that someone out there has tried & it didn't work or else it would already be the rage 20 years ago & every Mopar Forum on the net would have a thread on it
Good luck!

Re: what about putting a carb on a magnum motor? [Re: 72sat] #1285476
08/15/12 11:23 PM
08/15/12 11:23 PM
Joined: Mar 2012
Posts: 168
Washington State, USA
W
Winchester 73 Offline
member
Winchester 73  Offline
member
W

Joined: Mar 2012
Posts: 168
Washington State, USA
heres another way-i once drille a stock iorn 4bbl intake and mounted it on a magnum pretty much as a joke.the joke was it worked perfectly!i used a pistil drill and drilled ont the "step" above the stock intake bolt hole(youl see what im talking about)the four corner bolts dont have these and are a little more difficult,still took only about an hour.

Re: what about putting a carb on a magnum motor? [Re: 70Cuda383] #1285477
08/15/12 11:29 PM
08/15/12 11:29 PM
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo Offline
Too Many Posts
DaytonaTurbo  Offline
Too Many Posts

Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
Quote:

Quote:

Your time is worth nothing to you then I take it.






time is always worth something, but I laugh whenever I hear someone say this trying to discourage someone from trying something.

Hobby time is Hobby time, and last I checked, NONE of us get paid for our "play time" I've done things the hard way before, simply because my wallet was empty, but I had "play time" available.




There's a difference between doing something yourself, where the result you are capable of is perfectly safe, sound and functional versus doing something yourself where the result is a piece of crap that won't work and you will just have to end up throwing in the garbage.

You know what would work well on top of that magnum intake? A propane mixer, since the intake would still only be flowing gasses.

Re: what about putting a carb on a magnum motor? [Re: Winchester 73] #1285478
08/15/12 11:42 PM
08/15/12 11:42 PM
Joined: Oct 2005
Posts: 6,048
Back home in PA
B
BulletBob Offline
master
BulletBob  Offline
master
B

Joined: Oct 2005
Posts: 6,048
Back home in PA
Now I have seen that done & it works!

Re: what about putting a carb on a magnum motor? [Re: BulletBob] #1285479
08/16/12 12:31 AM
08/16/12 12:31 AM
Joined: Mar 2004
Posts: 300
St.Louis ,Mo.
7
72sat Offline OP
enthusiast
72sat  Offline OP
enthusiast
7

Joined: Mar 2004
Posts: 300
St.Louis ,Mo.
thank you for real world reply. has anyone else seen or done this? I do not want to hear what you think,I want to know what you have done or seen.

Re: what about putting a carb on a magnum motor? [Re: 72sat] #1285480
08/16/12 07:58 AM
08/16/12 07:58 AM
Joined: Sep 2003
Posts: 1,688
Marlboro, NY, USA
R
Rick_Ehrenberg Offline
top fuel
Rick_Ehrenberg  Offline
top fuel
R

Joined: Sep 2003
Posts: 1,688
Marlboro, NY, USA
Surprised nobody mentioned how easy it is to use the junkyard PCM and harness, and keep the SMPI!

Rick

Page 1 of 2 1 2






Powered by UBB.threads™ PHP Forum Software 7.7.1