I've..got...an..idea..

Hmm, lol. Now, how can I get anyone excited over what I'm about to say? I have not a clue!

The idea of using a turbo on the carb setup is arousing my thoughts of trying. On the other hand, how feasible is it?

I WONDER! I know its been done countless times on muscle cars and all.

I would have to say though, that the tuning process would be hell? And if anyone knows, would it greatly affect the mix to fail an etest?

Heres my take on it, and I hope someone on here gets a little excited about it! This is more or less for using it on the weber carb. To turbo the stock, IMO, would be worthless!

Now, I have never fiddled around with turbo setups so I don't know much on how it is routed. My idea of doing this, is that by using a snorkel setup from redline to mount on top of the carb and then the turbo is hooked up at the inlet of the snorkel. From there the air filter runs from the turbo intake to a cooler spot down somewhere in the front.

But would this need an intercooler? Whats the purpose of the intercooler? I know it cools the air and all, but is it to help keep the air cool enough to keep it from detonating in the comb. chamber?

So from air filter, to turbo inlet, to snorkel intake, to carb, then the exhaust has to be routed how? Exhaust goes from manifold to exhaust turbo inlet then through the turbo to outlet and down the exhaust pipe?

I would bet that this could work doing so with the modifications and all, but is it worth it? From tuning the carb, to the internals and not to mention how much boost would you be able to get from this setup and not blow the engine?

Also, by doing so, running on a carb must be hard because of the jet sizes?

And can you still after all is said and done run on a low octane fuel? I want some more horsies in the turd and would like to optimize it, but just wondering what the thoughts and opinions are on something like this.

It is a diff. alternative to performance on these trucks and I yet to have heard of anything like this!

Otherwise, its either an engine conversion to something else, spend $2k on a supercharger and get a 38 weber and put in a cam with some stronger internals on the head...

LOL, not to mention it could be a fun experience... A very unique ride, for sure...

ok... yeah turbo thru the carb is nice... you are getting more air in... but yet you also need more fuel as well to keep up the mixture or else the truck will run lean....... other than rejetting the carb to provide more fuel to compensate for the extra air... you also have to think about the oil line for the turbo also.i think using a turbo off the exhaust (past the manifold and cat converter...like on 2004-current f150's) that you could do away with the intercooler and get it done....kind of like a sleeper of sorts... but you still need more fuel to go into the carb or at least add a huge electronic fuel pump and see what happens.

Talk about a nice website, eh!?

I pulled a piece from that article, and here it states:

"Turbos at High Altitudes
A turbocharger helps at high altitudes, where the air is less dense. Normal engines will experience reduced power at high altitudes because for each stroke of the piston, the engine will get a smaller mass of air. A turbocharged engine may also have reduced power, but the reduction will be less dramatic because the thinner air is easier for the turbocharger to pump.
Older cars with <i><b>carburetors</b></i> automatically increase the fuel rate to match the increased airflow going into the cylinders. Modern cars with fuel injection will also do this to a point. The fuel-injection system relies on oxygen sensors in the exhaust to determine if the air-to-fuel ratio is correct, so these systems will automatically increase the fuel flow if a turbo is added.

If a turbocharger with too much boost is added to a fuel-injected car, the system may not provide enough fuel -- either the software programmed into the controller will not allow it, or the pump and injectors are not capable of supplying it. In this case, other modifications will have to be made to get the maximum benefit from the turbocharger. "

This statement with the carb has me confused?

audioinmotioninc, are you talking about running a seperate exhaust pipe or something from the turb past the cat and back into the exhaust line? How would this eliminate the need for an intercooler?

an intercooler makes the air colder. colder air is more dense. the air particles fit together tighter so you can fit more cold air in the combustion chamber. I think hot air with the same mass as cold air is lesser because the particles arent packed as tight.

I dont think you could run enough boost to matter on a stock engine.

Heres a couple pics of a setup that a guy I know is building. I don't know all the details but I know its a Delorto carb that is modified to be pressurized, he modified the intake to accept the carb and to get rid all unessary stuff and get the carb lower for the carb hat. This motor is built!! He took me for a ride before he put the turbo manifold on and it's quick, cant wait till he gets it done with the turbo.

check out it shows the type of turbo setup i was talking about.....
a friend of mine has a bagged 06 f150 on 24's and he was thinking about getting it... it is actually called a "remote mount turbo setup"

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another thing... you would have to fab up a cover to go from the turbd to the carb... so all the air would go into it... kinda like a check valve of sorts...... have the regular intake pipe... halfway down add a buttewrfly valve and after the b/f fab up a "y" pipe so the turbo'd air could come in and that would prevent the turbo'd air from going out the other way and only into the carb... which is what you want.......

For carbuerators, most guys use a blow through setup where the turbo blows air through the top of the carbuerator. This requires a pressure bonnet to force the air down the throat of the carb.

The other option is called draw through where the turbo intake pulls air through the carb and compresses it. I'd advise against this because you can't easily purge charge air without worrying about spraying fuel.

Lol, boyo' I've got alot to respond to! I'm sure with some boost on this engine, it would have a difference. Nothing that will knock your socks off or anything but I would think enough to get her going, ya know?

dragginmazda86, DANG! Does that guy have a build p page of it or anything? Lol, pics, vids? How does one pressurize a carb, per se? Is his engine a b-series engine and how much boost is he running? All stock internals?

audioinmotioninc, that sort of setup does sound very nice indeed! Although, for how much they want for all the parts, its pretty spendy! I figure if I do a turbo setup, I will copy that idea.

MazdaTweaker, when you say stock, are you talking about the stock b-series engines with the turbos on it already? If so, is'nt the efi only equipped with them?

..."That being said, I know the turbo motors are less compression stock. The higher compression causes higher cylinder temperatures and that causes spontaneous detonation. "

Well hence that is why I would have to run a higher octane fuel..

I figure if I do a turbo setup, I would buy the 38 and a cam as well as beef up the head to help fuel delivery. I also heard that in combo with a mech. pump, I would have to add an electric pump as well. Although, I don't know how that would work?

As for the 02 sensor, I've already got that lined up and gonig in when I build my console. Originally I'm doing it to monitor the mix on my 32/36 during diff. weather and altitude.


audioinmotioninc, please elaborate on this more?
another thing... you would have to fab up a cover to go from the turbd to the carb... so all the air would go into it... kinda like a check valve of sorts...... have the regular intake pipe... halfway down add a buttewrfly valve and after the b/f fab up a "y" pipe so the turbo'd air could come in and that would prevent the turbo'd air from going out the other way and only into the carb... which is what you want.......

Let me see if I got this right. In essence you are just talking about keeping the back pressure down?


and quadmasta, the only way I've heard so far on turboing a carb is the blow through setup. Is this bonnet the same thing audioinmotioninc is talking about?

I think I may need to do a sketch up of this to get me idea across.. Although, I'm sure you guys have a better pic of whats going on than I do!

EDIT: ON the other note, I should also mention instead of pursuing turbo with a carb, buy a TBI setup from weber and use it for turbo. So really, its like a step down from the EFI turbo.

All in all, I still have to consider buying all this stuff and seeing if it is more cost efficient in comparison to just swapping out with a diff. motor... lol.