blackbaron

My Feedback: (92)

Other than a big bore carb, high flow muffler,and Electronic ignition, what other ways are there to improve the performance of a Homelite 25cc engine?

w8ye

My Feedback: (16)

http://testfly.0catch.com/homelite/e...lindermod.html

Gene Chernosky

My Feedback: (182)

Stuff the backplate of the engine. What I mean is to add a piece of aluminum sheeting to the inside of the back cover. In order to use the maximum thickness of sheeting you can take off ~3/32" off of the crankpin without hurting a thing. Stuffing the case helps the engine draw in and expell out the fuel/air mixture more effieciently.

captinjohn

What are some of the ways you use to cut off crank-pin? Thanks Capt,n

blackbaron

My Feedback: (92)

Gene

I just bought that 25cc Homelite from you last Sunday. Did you do the backplate mod to the engine that I just bought from you? I was wondering what all you have done to it in your conversion process.

Gene Chernosky

My Feedback: (182)

Sorry, the engine sent to you did not have the backplate stuffed. Your engine got a rather plain conversion...venturi, big-bore carb and free-flow muffler. Getting the most out the engine would require to bore the manifold to 5/8" ID like the base of the carb and port the cylinder to match. This could be done but then you would have to get pressure from the case to run the diaphram in the carb to pump fuel. That's relatively easy for me to do...maybe not you???

In order to grind the end of the crankpin it is preferred to remove the shaft out of the engine as the pin is VERY hard steel. The only problem with that is there is a possibility of bending the crank while taking it out unless you are VERY careful and/or use a press. If you grind it while it is still in the case you have to be SURE to seal off the rear bearing so as to not get ANY metal pieces in it. A Dremel tool with a cut-off wheel will work or use a grinding wheel. Either way done with a Dremel will take a while...though it can be done.

In case you haven't gathered...you have to like to tinker with things in order to get all you can out of a conversion...and knowing how to tinker quite well helps!

blackbaron

My Feedback: (92)

Actually I am not dissapointed with your conversion. I was mainly curious about the engine. I was only interested in bolt on mods since I have the knowledge but not the appropriate tools and skills to machine on the engine. This engine will be mounted on a 25% Kange Monocoupe. I estimate it will power the plane adequately. What size prop do you recommend for this engine?

Gene Chernosky

My Feedback: (182)

16x8, 18x6, 18x8 or around that.

platero

with only a dremmel I modify my homelite, take a look to my web is in spanish bu a lot of photos
http://www.hpignitions.com.ar/reform...lite_25_cc.htm
Turns a 18x8 prop at 8.000 rpm

captinjohn

I cannot read Spanish...but your photos speak for themselves. Very nice work. Thanks Very much. Capt,n