K&B .40
 

can i put monster trinity power blend into a K&B .40

RE: K&B .40
 

Trinity has 12% oil. I wouldn't use anything less than 18% oil in a k&b . You could add some klotz or castor to bring it up to the 18% level. About 2.5 oz per quart.

RE: K&B .40
 

no it is 20% what i got and i got a 25 years old motor

RE: K&B .40
 

20% nitro content - 12% oil

RE: K&B .40
 

Ouch! 20% nitro is on the high side for a 40 sized motor. Could run way too hot and burn the crap out of it!!![X(]

RE: K&B .40
 

More oil, less nitro....maybe Wm. Robinson will reply to this post. He knows more about K & B's than K & B does. Dave

RE: K&B .40
 

I run my K&B's on 15% nitro w/o a problem, don't know what effect 20% would have. Definitely needs more oil if only 12%. Bringing oil up would also lower nitro level slightly.

RE: K&B .40
 

yeah,my motor is 25-30 years old and has been sitin there prolly 20 years

RE: K&B .40
 

Don't knock the old motor. It will probably run harder than you.

RE: K&B .40
 

Do up the oil content. The nitro should be fine. The K&B 40 was a gonzo engine in its day. They got run on 60% nitro in control line ratracers and competition freeflights.

Jim