25cc toro on a diet
 

just thought id post my 25cc toro. Its never been run ( i have too many conversions, and not enough planes..lol) it has an rcexcel ignition, and a walbro wt257 carb. it weighes 2.3lb with out ignition. i was thinking of selling it if anyones intrested.

RE: 25cc toro on a diet
 

Nice work. It looks like "a real live airplane engine". ;)

When people ask me how I make an industrial engine work for an airplane, I just tell them I cut everything off that doesn't look like an airplane engine, and there it is! :D

What kind of prop/rpm numbers do you get with that one.

AV8TOR

RE: 25cc toro on a diet
 

I have on of these. Great little engine.

Lots of power, easy to start and runs good in the air.

What more can you ask for?

RE: 25cc toro on a diet
 

ive had a few of these. I was getting around 7500 with a 16-8 prop.This is my last one from a batch i bought a couple of years ago.

RE: 25cc toro on a diet
 

billsair, how did that conversion of a engine that said Zenoah on it & it had 3 intake ports? Just curious. Best Regards Capt,n

RE: 25cc toro on a diet
 

that said engine is still here......waiting to be finished.I actually feel sorry for it.....never seen a drop of gas and neglected[:o]...lol I did buy the ignition for it though. Now i feel guilty, thanks alot!:D

RE: 25cc toro on a diet
 

Are you speaking of one of the "strato-charged" smog Zenoahs??

AV8TOR

RE: 25cc toro on a diet
 

yes[:@]

RE: 25cc toro on a diet
 

I have one of those. I was going to buy a cheap clone G-26 cylinder for it, but then after some research I found that you would either have to weld up the crankcase, or JB Weld it, and grind out the transfer ports in the crankcase a bunch to fit the good cylinder. I set it aside on a shelf figuring some day I would convert it anyway just to see how the power would be with the stock setup. One worry would be how to richen up the carb to account for running no air filter and a decent flowing muffler...

Are you going to get busy on yours?

AV8TOR

RE: 25cc toro on a diet
 

mine is actually 40cc that came out of a ryobi chainsaw. i just basicly have to re-assemble it and set up the E.I. I guess id better work on it already. here is a pic of said engine....

RE: 25cc toro on a diet
 

I have one of those Toro Motors in a boat. Mine had the small air reed valves on the sides of the cyl head. I modded it with a Walbro 257 carb, a custom intake and velocity stack, tuned pipe and modded the cylinder to take advantage of the porting the air reed valves had. The reeds were removed and I J/B welded up the holes where they went to the air cleaner. It is a great motor, runs strong, low maint, easy to start.

I do have one issue I have been trying to resolve though, it appears that the stock ign has a built in rev limiter. I can run the motor WOT and it acts like a built in studder. Thats fine on the shore but in the water I can't get it to tune out all the way due to this, it leaves a nice black residue on the exh silencer and is affecting top end. I know it has the power and potential to run up the rpms but I can't due to the rev limiter. I thought about a higher pitched prop but then the hole shot would be lost. Jetting is correct and I have played with needle settings for several months. It just hits a wall on rpms. If I keep it below the rev limiter it runs great. I have a homelite string trimmer for the yard that would put this toro to shame in stock format. (Standard small carb and poor exh system).

How did you get the electronic ign to work? is it a simple procedure to change it? Is there anyone who knows of a way I could keep standard ign and bypass the limpt rev limiter. I dont want to replace it with a Zen, hoping I can find a soultion.

Thanks, Scott