STP Octane Booster

the_edge150

Dealer
Aug 21, 2008
289
0
0
Monrovia,CA
i found out that if when you go to mix your fuel, if you put in about 4 ounces of STP Octane Booster (99cents store stuff) it will make a considerable difference in mid-to high RPM's.^5
 

Bikeguy Joe

Godfather of Motorized Bicycles
Jan 8, 2008
11,843
235
63
up north now
That would be the case if you are running too rich...the octane booster "thins out" the fuel for the fuel/oil mix, thereby making a rich(er) engine lean out closer to peak performance.

Higher octane is pointless to the china in frame engine since the compression is already very low.
 

Bikeguy Joe

Godfather of Motorized Bicycles
Jan 8, 2008
11,843
235
63
up north now
Not much.

Octane booster make higher octane. Higher octane make the mix burn slower and is handy with high compression engines so they don't pre-detonate.
 

Goat Herder

Gutter Rider
Apr 28, 2008
6,248
11
38
N.M.
:-||Another thing about octain boosters is they can clean the carbon out thus improving the availible oxygen in a given motors combustion chamber, like fuel induction cleaning. Not much experimenting can be done on these chinas, danger will robenson.
 

jasonh

New Member
Jun 23, 2008
1,590
0
0
36
Longmont, CO
Probably better off yanking off the head and manually cleaning for carbon removal.

I'm curious how well seafoam works on these motors as far as a good cleaning.