what single barrel carb for blow through?

[I Ride Sand]

I'm looking to make the most I can with something small, and being as VW guys know that struggle I decided to come back here and ask for some pointers.

What is a good single barrel downdraft carb for a 1300cc engine for forced induction? I've got a suzuki samurai that needs some help in the power department. I know, its not a vw. But if you ask around on the offroad forums, i get told to either stick a chevy 350 in it or to go with a 1.6 16v engine. all of the 1.6 16v engines in the area are going to cost several grand, and the 350 is not even a consideration due to weight.

The carb flange doesn't matter, I'll mod a manifold for science. For timing control I'm thinking a CB black box so that it can keep a decent amount of timing off boost but still have enough retard when its under power.

The turbo is going to be a k03 off of a TDI, and the goal is 100ish HP. Shooting for the moon, i know... The cam is going to be the stock cam (no idea on the specs), the head is an 8 valve head, unported, stock valves, redline no more than 6000.

The one catch is that this is an offroad 4x4. Its going to see some odd angles, and this is what stumps me on the carb. Is there anything out there that will be able to maintain a decent AFR when it gets to a steep incline when it will actually be helpful to have the added power?
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Just a dirty coyote playing in the desert.
now where'd that dirty badger run off to?

[oprn]

You might want to rethink that turbo. It is sized for a 1.9L engine. Putting it on a 1.3L engine is not going to be a very good match. You won’t likely see any boost below 4000 rpm.

Got find a Suzuki 1.3L at the wreckers and grab that turbo.
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We had the stone age, the bronze age, the industrial age and now we are in the age of mass deception and mind control for corporate profit. (The mass media age)

[Alstrup]

The turbo is ok for a 1300 gasoline engine. Wrt carburetion. Think Renault 5 GT turbo
Another good option was to harvest the fuel injection and turbo from a Fiat Uno turbo or Fiat Mille in the south American market.
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https://www.thesamba.com/vw/forum/viewtopic.php?t=435993

[modok]

My brother has one of those things, he's blowing through the OE TBI, with a bigger injector and an OLD megasquirt.

Is that a good setup?.....not really. funky at low speeds, It does work tho, especially at wot
IMO the stock carb ran better than the stock TBI.
I don't know what carb to use.... something from a motorcycle?
Or put a 1.6 head on it with a port injection manifold.

[I Ride Sand]

[NJ John]

I’m blowing into a 40 drla on a 1600. So far so good.

I always wanted to try a Harley carb. Bike guys do blow into them.
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1973 standard, yellow, lowered, 3” narrowed front, 1600 blo-thru turbo w/single dell 15.4@86, so far
11.41 et buggy. Long gone
Let’s go O’s! Let’s go O’s!
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[rayjay]

How about an AMR500 supercharger?

[I Ride Sand]

[modok]

I love carbs. But if you have to ask if the grass is greener on the other side then your maybe not a carb guy. Solex is a complete turd. If a carb has too many features then don't use the extra features,. Easier than adding circuits to a carb.
Put injectors in the manifold. When in 2022...the easy route is not carbs.

[Onceler]

My dad bought his 3k carb from certified machine and loves it. Don’t have any idea about turboing one though.
https://www.certifiedmachine.com/parts-for-samurais#
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1972 Karmann Ghia

[NJ John]

People put the keihin/Harley carb on 1300 Samurai’s for a performance mod and some have turbo’d them.
_________________
1973 standard, yellow, lowered, 3” narrowed front, 1600 blo-thru turbo w/single dell 15.4@86, so far
11.41 et buggy. Long gone
Let’s go O’s! Let’s go O’s!
https://www.youtube.com/@AirSpooledGarage

[clonebug]

Last thing you want is a carb sloshing around the bumps and spilling over when you climb steeper hills.
Just cry once and go FI.
It might take a bit to set up a crank trigger ignition and mount injectors but in the end it will be a driver instead of a garage or trailer queen.
A Microsquirt or even a used MS-1 or MS-2 would be plenty for a simple EFI.

You could also go Holley Sniper if you want a different challenge. They do have a single barrel unit that wouldn't take too much to adapt.
Eric Allred has been setting them up for A/C VW engines and might be able to make it work for a 1.3L Water cooled engine.
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[I Ride Sand]

[modok]

Sorry I can't think of a great idea.
A really nice one barrel carb would be nice thing to use on a VW for sure too, that can handle more g-force and with more tunable circuits, but there just isn't enough motivation to really make it happen.
One shortcut idea is just use half of a DRLA or IDF or DCOE
But most times within a while you realize that if you used both barrels it will work even better so.....it's a transitional idea that usually gets scrapped before it ever gets completed.
Sorry to say that's really how it is. the little 1300cc japanese yard tractor is probably the same too.

[Stinky123]

I knew a guy that used a motorcycle carb on a turboed 1600 rabbit motor. It worked better than a weber, or holley-weber (which are both prone to getting sand in the secondary linkage, and then sticking). It was a mid-engine rail, and he go tired of the thrill of the rail not wanting to slow down, due to the above.

Suck through the carb, it is simpler, and has some advantages (but then, so does blow through).

Those carbs get by w/o an accelerator pump.

[oprn]

I used a Weber 40 DCOE on my Rabbit engine to start with but then switched to an Impco propane carb for the octane advantage under boost that propane offers. The Impco carb throttle body is a separate part with no connecting linkage or drillings so I separated the two and put the carb body without the throttle plate on the suction side of the turbo and used a Rabbit EFI throttle body downstream of the turbo. I suppose I had both a draw through and blow through at the same time!

One advantage of propane is there is no float bowl so off road side hills and steep climb and descend angles have no effect.
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We had the stone age, the bronze age, the industrial age and now we are in the age of mass deception and mind control for corporate profit. (The mass media age)

[I Ride Sand]

[Clatter]

Maybe a single Kadron would work?
They come from a Brazilian Jeep.
Plus you can put a slosh tube on the bowl vent..
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Bus Motor Build

What’s That Noise?!?

[I Ride Sand]

Well I made a decision, not sure if its a good one yet but we'll see.

I'm going to try forced induction with the toyota 3k carb. They're cheap enough that if I have to destroy a few to figure out how to make them like pressure then its not a harrowing endeavor to buy them. They do work well at odd angles, and they came off of a similar sized engine. with low boost (5psi) they might work fine out of the box. There is a weird bimetal reed valve temp.... thingy on them that I'll have to block off but no big deal to do that. I'm reasonably certain that was for a heat riser on the toyota. I ordered the first victim and it should be on the way!
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Just a dirty coyote playing in the desert.
now where'd that dirty badger run off to?

[earthquake]

How about the 1 Barrel Holley efi setup...
https://www.holley.com/products/fuel_systems/fuel_...ts/550-552

eQ
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79 INTERNATIONAL SCOUT II
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