- Location
- Washington
The oxygen in the 109 is hard to on
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Sent from my iPhone using Tapatalk
High compression issue
- Thread starter air blair
- Start date
Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
Need Gil posting, he actually use to know a decent amount about all the different fuels.
air blair
you are the reason
- Location
- thumb, mich again
I used vp110 and mixxed 50/50 with premium
air blair
you are the reason
- Location
- thumb, mich again
Hmmm, im learning here
- Location
- Harveys Lake PA
Big big difference from that mix to ms 109. You are talking like 3 jet sizes kind of difference. Not just opening up a screw a little.
air blair
you are the reason
- Location
- thumb, mich again
Really, bigger jets? This is really interesting. Is it lead that changes things.... Im a big dumby on this whole race gas thing. Apparently i need to google more
- Location
- Harveys Lake PA
Ms109 is oxygenated.
Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
just remember, any time you make a change, you may have to rejet........
- Location
- Harveys Lake PA
And we sit and wonder how engines get blown up all the time...
Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
LOL
Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
and then they blame the builder.
- Location
- Harveys Lake PA
Well you don't just add race fuel and expect more power. Race fuels all have different burn rates and will prevent detonation and due to the characteristics of the fuel you can run more timing, higher compression, tighter squish etc. But they all work together and it's been said a million times on here but check with the guy that built and ported it before messing with stuff. It may be set up a certain way for a reason. Google 2 stroke technology. I posted a link a few months back about sound waves and 2 stroke chambers that was way more info I could comprehend in 3 reads. As simple as a 2 stroke may look there is a lot of science to properly tuning an engine.
air blair
you are the reason
- Location
- thumb, mich again
I'll just let the big boys play with that stuff for now. These little engines will keep me out of political harm. Cha know
- Location
- some where
You guys are confusing..three jet sizes ..? A 150 <135. Is different than 115<100 in main circuit. Is vp110 oxygenated? Comment about blame builder, seems as poke @@ir... 160comp motors shouldn't need race fuel,and it broke.
air blair
you are the reason
- Location
- thumb, mich again
Or is it story time big kahuna about the little engine that thaught it do but didnt and ended up being a
T.ruely D.ead E.ngine
T.ruely D.ead E.ngine
Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
I have no idea what you are talking about. I can think of a few times since I have been on these sites, going back to 2000 where someone starts swapping domes, raises compression and thinks they can just toss in race gas and everything goes perfect......... but instead the motor lets go. And then they blame the builder........
Years ago you could go on RIVA's site and look up their porting. Pump Gas Porting and Race Gas Porting. Guess what. Some of their packages would give you 160-170 compression and it would say "you must run 100+ Octane". The point that you have to run Race Fuel is not just based on what static compression you have. It also has to do with your Compression Ratio. Not compression numbers. Triple Cylinder motors run fairly low compression #'s. port it and up compression and to around 160 and your into the possible race gas levels......
Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
Sorry dude. Just trying to help you out here. Not sure what your meaning..... I have been at this on these forums for 14 years. Seen it all. Just posting info that I have learned over the years..... I do not deal with race gas levels. Nor do I want to. Do the research, the info is out there.
Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
Ok, Yours and TStewards comments got me thinking........... So I went back and did some quick searching............... No. My comments have zero to do with your issues with the TPE motor. Sorry. I dont play that game....... If I see some way I can help I will. So. With that. You can try and learn stuff or not. I learn stuff every day here.
air blair
you are the reason
- Location
- thumb, mich again
Me too kahuna, what is this tpe you talk of? I ran my little maniac engine with 28cc domes with 1/2 93 octane and half pump race gas.(just a little turn of screws) No problems but this vp110 i got was a whole different story just like this t.d.e. I had
- Location
- Harveys Lake PA
The three jet sizes was an exaggeration but it is more than the turn of a screw.
C12 is leaded, non oxygenated. VP100 is oxygenated. When you say VP110, are you referring to sunoco 110?
