Piston head color

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Barber213

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Good evening to all . I finally had time to run my ESP 340 motor . This is second run . I noticed the piston head has a reddish color and the piston is real dark . From the instructions if I’m correct . He said to use a spark plug that was used already for breaking it in . It’s even darker now . I running it on pump 93 gas , 25:1 mix , klotz oil and my 1107 carb is set to 2 1/8 on the high and 1 3/8 on the low . It’s smoking . I think it rich enough . Or should I go 20:1 ? Here’s some pics .

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The piston is fine. Running 20:1 is even richer with oil. The first number is gas the 2nd number is oil, 25:1 is 25 parts fuel to 1 part oil. The higher the first number means less oil, the lower the first number means more oil or closer to a 1:1 ratio. If your good with your tuning you can run less oil like 32:1 and be ok but if your tuning isn't good you can fry your engine....

Klots is a castor oil which I've found to leave alot of carbon on the piston, switch to a synthetic 2 stroke oil if you plan to leave the engine at 25:1
 
Rep732 said:
The piston is fine. Running 20:1 is even richer with oil. The first number is gas the 2nd number is oil, 25:1 is 25 parts fuel to 1 part oil. The higher the first number means less oil, the lower the first number means more oil or closer to a 1:1 ratio. If your good with your tuning you can run less oil like 32:1 and be ok but if your tuning isn't good you can fry your engine....

Klots is a castor oil which I've found to leave alot of carbon on the piston, switch to a synthetic 2 stroke oil if you plan to leave the engine at 25:
Rep732 said:
The piston is fine. Running 20:1 is even richer with oil. The first number is gas the 2nd number is oil, 25:1 is 25 parts fuel to 1 part oil. The higher the first number means less oil, the lower the first number means more oil or closer to a 1:1 ratio. If your good with your tuning you can run less oil like 32:1 and be ok but if your tuning isn't good you can fry your engine....

Klots is a castor oil which I've found to leave alot of carbon on the piston, switch to a synthetic 2 stroke oil if you plan to leave the engine at 25:1
Rep732 said:
The piston is fine. Running 20:1 is even richer with oil. The first number is gas the 2nd number is oil, 25:1 is 25 parts fuel to 1 part oil. The higher the first number means less oil, the lower the first number means more oil or closer to a 1:1 ratio. If your good with your tuning you can run less oil like 32:1 and be ok but if your tuning isn't good you can fry your engine....

Klots is a castor oil which I've found to leave alot of carbon on the piston, switch to a synthetic 2 stroke oil if you plan to leave the engine at 25:1
Click to expand...
What’s a good two stroke synthetic oil that you would recommend ?
Click to expand...
Click to expand...
 
jeepfreak1972

Post in thread 'Best 2stroke oil to run and type of gas?'

I'm not going to tell you a "best" because there really isn't a best. Just certain ones stand above others in my own testing and experience. Other will have their own experiences to share I'm sure.

Any of these will work well...
Amsoil Dominator
Honda HP2
Echo Red armor
Amsoil Saber
Motul 800 off-road
Motul 710
Maxima K2
Maxima Super M
Maxima Castor 927
I have never ran this last one but many have and like it. I'll get around to testing it one day.

As to fuel, use ethanol free fuel from a pump with a separate hose for said ethanol free. Also called Rec fuel, short for recreational...
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