Oxygenated fuel in saws do’ And don’ts

[ADMO services]

Oh the cylinder will be ported to flow you can bet on that! Yes indeed vp makes so many different fuels now I can’t keep up!

 

[ADMO services]

180 psi ain’t worth my time.

 

[ADMO services]

Once it’s ported and compression upped if I land at 180 then that’s a different story

 

[ADMO services]

But 180 to start with no

 

[ADMO services]

No nobody can answer on the optimal squish and combustion chamber size for oxygenated fuel. Some of your vp fuels may run 4 to 1 air to fuel. You can’t compress fluid. There’s a reason why top fuel dragsters are all hemi combustion chamber engines

 

[ADMO services]

I meant to say so nobody

 

[Deets066]

.020 squish is pretty common

 

[Deets066]

Once it’s ported and compression upped if I land at 180 then that’s a different story

This is what I meant, running 180 fully ported and ready to go. most guys don’t run a lot of comp with really high rpm saws

 

[ADMO services]

Ok so I’ve followed the normal squish guidelines on outboards running alcohol and still bent rods. Guess it just comes with the territory

 

[Stihlbro]

There is no optimal squish or chamber size. You do what it take to make compression. Too many variable with different elevations. I run looser squish than most.

There is no fuel that just makes a saw fast. All the work has to come together. Stock saw and race fuel can be out powered by a ported saw.

I would suggest eliminate all you can with gas, get the most you can. Then move to an alternative fuel. Maybe e85 next.

 

[ADMO services]

That’s good advice. I appreciate all who had words of wisdom here. Lots of good folks on this forum!

 

[ADMO services]

@Deets066 love your profile pic. Reminds me of mr Anderson hiring bevis and butthead to prune trees and they start cutting down powerlines. Hahha

 

[Stihlbro]

If you want run methanol, I’ll help where I can.

 

[ADMO services]

Thinking about just going e85 at this point

 

[ADMO services]

Won’t be in any competition. Just a play saw

 

[srcarr52]

Ok so I’ve followed the normal squish guidelines on outboards running alcohol and still bent rods. Guess it just comes with the territory

These small cylinders with stock squish band widths get no where near the squish velocity that it takes to start having problems. Make it as tight as you feel comfortable with.

 

[ADMO services]

Now that is a great reply

 

[ADMO services]

@srcarr52 fear and loathing! Yes!
Ask about them f$&king golf shoes!

 

[Deets066]

How about oxygenated race gas with nitro propane and a little koolinol?

or are there serious gains with e85?

 

[srcarr52]

How about oxygenated race gas with nitro propane and a little koolinol?

or are there serious gains with e85?

Hydrazine!