Fuel injection??

[Master Hack]

I ordered one of these "fuel injecarator" just for fun.
as you all know the Skunkworks" division here at the mountain top is always on the cutting edge of stupid ideas. Some of ya may recall the Mohonda Gx390.


where a Mopar ignition was grafted on to GX390. The idea being to have a little centrifugal advance. It worked but required too much adjusting and tinkering to be practical. The whole thing had to come off for a belt replacement.
Once it ran and all the nay sayers ate some crow, it was replaced with a "normal"
ignition.
Stupid ideas here are for entertainment purposes only. No parts or vehicles were harmed in the making of this junk.
That said the fuel injectarator has been ordered for a still classified project. Stay tuned.
And yeah l ordered the mikuini.

 

[65ShelbyClone]

I recently ordered a Speeduino NO2C kit, recently as in it's still in the mail. It was $65 shipped and requires an Arduino Mega 2560 (or clone in my case) for another $15-20. It's only the brain and nothing else needed to run EFI, but the cost is so low that an EFI setup really could be pieced together for just a few hundred bucks. The four-channel Speeduino is only $20 more.

 

[bob58o]

I remember when mechanical fuel injectors were called carburetors. WTH is a mechanical fuel injector that a carburetor is not. I don’t understand how it works differently from a carb. A carb basically uses air pressure right? Which is based on density, volume, and air speed. What else does the mech FI use? Is there an RPM gear or something? Instead of using the amount of air consumed at each RPM like a carb does? I guess the question is… what tells it how much fuel to inject?

 

[bob58o]

I see Shelby Clone already kinda addressed this a page ago.

 

[jpndave]

I'm new to this forum, looking for info on the clone engines for some projects.

The main difference in fuel injection vs a carburetor. is the fuel is forced in under pressure rather than being drawn in through the venturi. From what I have seen so far, though not hands on, the Tillotson TCT being called fuel injection may not be technically correct as @65ShelbyClone mentioned previously. It is more of a self tuning carb from what I have seen. I could certainly be wrong if it has some way to inject the fuel under pressure.

Mechanical fuel injection was used back in the 60's. The Corvettes had that as an option. When it worked, it worked well. However, without electronic controls they could be troublesome to tune and keep in tune.

 

[Master Hack]

I have Tillotson “fuel injector” in hand and it is just an adjustable carb, nothing more. Nothing automatic that l see. It has a screw with a R <—->L label on it.
its small and only has a 12 mm bore. It might be suitable for a chainsaw performance upgrade, but it won’t pass enough air to satisfy anything but a small engine. It is a nice piece however. Nice machine work, nice finish, looks well made.

 

[Denny]

How about some up close and personal pictures of the carb Terry?

 

[bob58o]

After receiving a carb with an adjustable jet that was called a mechanical fuel injector, I’d be calling Tillotson to tell them they can stick their carb in their biological poop injector.

 

[Denny]

After receiving a carb with an adjustable jet that was called a mechanical fuel injector, I’d be calling Tillotson to tell them they can stick their carb in their biological poop injector.

Bob, wouldn’t it be a poop ejector?

 

[Whitetrashrocker]

Bob, wouldn’t it be a poop ejector?

He is used to Chicago. Where they like to stick it in....
Wait. That doesn't sound right. Lol.

 

[bob58o]

Bob, wouldn’t it be a poop ejector?

Fuel injectors inject fuel into ports.
Poop injectors inject poop in bowls.

I mean it could be a fuel ejector as well. Ejecting fuel from a rail. It’s the Yin and Yang of popping.

 

[jpndave]

I don't see any way that carb is injected. Without a fuel pump there's no way to pressurize the fuel to inject it. Without pressurized fuel, it's NOT injected. As I read it, they are using a single point non linear metering system. That doesn't equate to fuel injection. For sure at least a misnomer.

Their info sheet on it is here:

https://tillotson.ie/wp-content/uploads/2016/12/TillotsonTCT-Explanation-of-Operation-v1b2016-4-22.pdf

 

[jpndave]

The Speeduino kit @65ShelbyClone mentioned is interesting. I'm going to look into that. I have a Microsquirt left from and abandoned project I might repurpose. It's harder to justify on a little clone with no electrical system. A batteryless system would be more appealing. I have the Stihl fuel injected chainsaw that works great but that thing was $$$$ and a 2 stroke so probably not practical to repurpose. I have seen some nice systems on small 4 stroke outboards but again, probably expensive to retrofit.

 

[Master Hack]

How about some up close and personal pictures of the carb

OK, when l get some time....

After receiving a carb with an adjustable jet that was called a mechanical fuel injector, I’d be calling Tillotson to tell them they can stick their carb in their biological poop injector

I knew that going in so l'm OK with it. It was only 40 bux so no big thang. I didn't expect real FI. I thought it might be fun to play with. I can think of projects that might need a small, adjustable, method metering fuel to. I'll deliver it to the skunkworks division see what they say. Watch for black smoke coming from the Mt. Top.

 

[Master Hack]

Due to overwhelming demand, here's the pics.
There is no guided tour. We're all smart enough to figger this out, aren't we?
We have to be cuz there is no instructions with it.

 

[ezcome-ezgo]

Looks like science

 

[bob58o]

A bit of operation info…

https://tillotson.ie/wp-content/uploads/2016/12/TF-Adjustment-system-EPA-Screw-v2b.pdf

 

[Master Hack]

Looks like science fiction!

Fixed it

 

[Denny]

Other than the plastic it looks like a well thought out piece. Nice casting, too bad it’s not bigger. Kinda reminds me though of the carbs that came on Takashema engines with the adjustable jet that constantly needed readjusting.

 

[Thepartsguy]

I ordered one of these "fuel injecarator" just for fun.
as you all know the Skunkworks" division here at the mountain top is always on the cutting edge of stupid ideas. Some of ya may recall the Mohonda Gx390.

View attachment 150844
where a Mopar ignition was grafted on to GX390. The idea being to have a little centrifugal advance. It worked but required too much adjusting and tinkering to be practical. The whole thing had to come off for a belt replacement.
Once it ran and all the nay sayers ate some crow, it was replaced with a "normal"
ignition.
Stupid ideas here are for entertainment purposes only. No parts or vehicles were harmed in the making of this junk.
That said the fuel injectarator has been ordered for a still classified project. Stay tuned.
And yeah l ordered the mikuini.

Running off a distributor? The most simple setup I know.