18cc domes on pump gas

[NYrider631]

just wondering what the effects of running pump gas plus octane booster and good oil on those domes. not really looking to run race gas and hard to come by 22cc domes. thanks

[Jereme6655]

you wont be able to do it.  That will make too much compression and you can't put enough octane booster in your fuel to compensate.  What people fail to realize with octane booster is.......yes it raises your octane.....BUT it raises it such a small amount that it doesn't even change your octane number.......its a gimmick.

 

not to mention that with 18cc domes you would be pumping such compession that you would need to run alky.....not race fuel.  

 

why do you say 22cc domes are hard to come by?  i can pick up my phone and have a set in route to my house later today.......you just have to call one of our site sponsors.......and its WAY cheaper to pay the $60 they want for domes than it is to try running those 18cc domes and have to rebuild your motor and replace your crank.

[noonansar]

I ran klotz octane booster for 2 tanks after I had my stock head milled. It didn't take long to realize that all it was doing was leaving a ton of deposits in my engine. I was lucky enough to be doing a plug chop to check jetting while running the booster, that's how I noticed the heavy deposits and glazing on my plugs. I will post pics later of the chop comparison pump gas with booster vs without. 

[trickedcarbine]

 

not to mention that with 18cc domes you would be pumping such compession that you would need to run alky.....not race fuel.

 

 

Little mis information here.... Lots of race fuels with much higher octane ratings then what alky provides.

[shakar]

^ i agree .... jus do a comp test and see what your needin.i ran 1/2 race 1/2 91oct at one point until i found the 100 ll at a local airport. works great goodluck

[ATV Galaxy]

standard bore 22cc

http://www.ebay.com/itm/Pro-Design-Yamaha-Banshee-Cool-Head-Domes-22cc-/400253752677?pt=Motorcycles_Parts_Accessories&vxp=mtr&hash=item5d30fb9565

 

 

big bore 22cc

http://www.ebay.com/itm/Pro-Design-Yamaha-Banshee-Cool-Head-Domes-22cc-Big-Bore-/380381770475?pt=Motorcycles_Parts_Accessories&vxp=mtr&hash=item58908532eb

 

 

you can always pm for forum discount

[possum]

Little mis information here.... Lots of race fuels with much higher octane ratings then what alky provides.

yup. i was about to say somethin.

[Nightmare]

I've run 91 with 18's but at 5000ft. No problems. I'm currently running 16cc with 110 race gas.

 

Sent from my SGH-T679 using Tapatalk 2

 

 

[Colby]

i have no problems running pump gas w/ 18's and +2 timing @ 3200ft

[NYrider631]

I meant it was hard to come by on here at least. but thanks to everyone else who actually had something helpful to say unfortunately im at sea level and im prob just going to have to get 22cc domes.

[10milmike]

Why would they be hard to get a 22cc dome here?. Any site sponsor can get them for u like Jeff at fast, Kevin at HJR, and not to mention Dave at Noss.. Plus many more do  a little home work.

[Olebetsy]

In nc, way below sea level like 82-200ft.... What cc domes could I get away with on 93 octane? 16cc 17cc 18cc 19cc 20cc????

[camatv]

depends on the dome shape..    shelf 18cc  yea  not going to happen.  hope your crank is welded at least also.