Gas/Oil mixture for rm 80

R

rmracer

Member

Oct 27, 2004

78

0

• Oct 27, 2004

• #1

I recently bought a 1998 rm 80 and I do not know what ratio to mix the gas :yikes: . The manual say's 20:1 but the person I bought it from told me it was 40:1. Also, I took the spark plug out and it is a BR9ES. In the manual it say's to use a BR10ES. The color on the BR9ES is a light tan which I think is normal.Could this hotter plug be because of rich jetting or what? Also,should I run regular pump gas or premium?Thanks for reading.

 

Last edited: Oct 27, 2004

C

Chili

Lifetime Sponsor - Photog Moderator

Apr 9, 2002

8,062

15

• Oct 27, 2004

• #2

There will be plenty of folks who will tell you that 40:1 is no problem. I prefer to keep the 80's and 125's at no less than 32:1. Depending on how hard the previous owner was riding the bike they may have required a hotter plug to keep it from fouling.

 

M

Mikey350D

Member

May 27, 2002

43

0

• Oct 28, 2004

• #3

The CR's come stock with a 10 (plug). Much too cold for my son's riding style. We run 9's inthe summer (big tracks & more WOT) ) and sometimes 8's in the winter.

Mikey350D

 

oldguy

Always Broken

Dec 26, 1999

9,419

0

• Oct 29, 2004

• #4

RMRACER please do not start a new thread with the same question. Look at your origonal one for the answers you have 2 good ones right here

 

J

jolyn

Member

Oct 17, 2002

21

0

• Nov 3, 2004

• #5

i run 50:1 in my bike.. but im sure the richer the ratio the longer the piston will last..