fuel

[tink-tink]

Random question but...


I have a 383 Stroker in my 1:1 and rund 93 octane same as in my DR but I also add a mix of octane booster along with lead additives( sea foam) this usually bumps my octane to roughly 110. How bad would I hurt this lil 30cc with the same sorts of additives?

 

[Guest]

I wouldn't waist it. I really don't think you'ld notice any improvements on a stock 2 stroke.

 

[Guest]

Just noticed it was your first post..

Welcome!

 

[Deluge]

Won't really hurt anything. But with the octane being that high on a stock engine, it could actually hinder performance.

 

[cordy]

Welcome to the forum.These are little engines not rocket engines.Why do you want higher octane,for more power?Put a bigger block in you dr. Or if you got the octane up high enough you could blow the piston out of your stouck engine ,then you could put in a big block.

 

[tink-tink]

High octane actually Burns slower and more efficient thus creating more power at a higher compression ratio along with reduced detonation. I ask because in my 1:1 I run a 9.7:1 compression ratio this lil thing if my math is right is near 11:1. Has a higher risk of detonation and higher temps.

That's only reason I asked

 

[cordy]

Ok I didnt mean to be ofensive,if I was I apologise.Welcome to ther forum.

 

[Deluge]

High octane actually Burns slower and more efficient thus creating more power at a higher compression ratio along with reduced detonation. I ask because in my 1:1 I run a 9.7:1 compression ratio this lil thing if my math is right is near 11:1. Has a higher risk of detonation and higher temps.That's only reason I asked

Yeah, but 110 is overkill. There are guys out there who run highly modified engines, and they're using Coleman fuel, which is about 50-55 octane. I run an ESP 30.5 Champ port, which is at about 14:1 and I've ran 87, 89 and 91 without any signs of detonation.

 

[tink-tink]

Naw not offended just saying why I was thinking about it, also higher octane = cooler temps = more power

 

[Deluge]

If your compression ratio is high enough to take advantage of it. Otherwise, it's a waste.

 

[Guest]

Naw not offended just saying why I was thinking about it, also higher octane = cooler temps = more power

Try it. See if it helps. If it does then you have an edge.

 

[alfred e numan]

welcome to 1/5th scale dude! these are a kick to run. these little engines do have high compression. the reason we can get away running these compression ratios is because there is such a small volune of air fuel mix. on a 1-1 engine, 15--17 to 1 compression - you would melt the dome of the pistons before the car got out of the driveway. These little cars ignitions are fixed, non adjustable.- about 8 degrees btdc. this is another reason we get away with these compression ratios.- no vacume advance- or weights with springs to advance either.

 

[Deluge]

Well said, Alfred!

 

[tink-tink]

True im running near 10° before my vacuum advance (18° total)

Just got my gears Turing... Shift the mag for a more advance timing

 

[Guantanamo Joe]

What's that yall are saying? Greek Greek Greek... I understand the anatomy of the engine, but your science is a little above my level...

Science- since when has science given us anything useful... ha ha ha (heavy hints of sarcasm)

 

[cordy]

YA gitmo joe glad there are folks who know more than I do.

 

[Guantanamo Joe]

Ill let them do the thinking then watch closely at which parts to buy.