Re: Apache J8; need info please
Hi Pardner<br />Please keep in mind that the info I have is from an older after market manual. There may be some differences. My book lists your Clinton Apache J8 as a 1958 5HP model. I also have Champ. J12J gapped @ .025 listed as the correct plug. I have two sorces that list this. Actually one gives .030 gap. This book also recomends 1/2 pint oil per gal of gas for the break in period and the 1/4 pint there after. I personaly would stick to the 1/2 pint to the gal or no less than 25:1. Use 90wt gear oil for the L/U. I believe that the Champ J12J is still available. I feel these type motors do better with more oil. They should smoke a bit. Be careful not to lean the carb out to the nth degree. Tune for good power but leave a little for smoke. You will not foul plugs at 25:1 or even a 1/2 pint to the gal (16:1?) unless the carb is adjusted too rich. A lot of fellas figure this plug problem is a fuel\oil deal. Nope, it's an air fuel deal, (given everything else is in line). One other detail on this fuel\oil ratio deal. A lot of times a manufacturer will give a ratio such as 25:1 and then turn around a say mix 1/2 pint to the gal. The reason for this is to save us, the operators, the head ache of a math problem. It makes things simple. 1\2 pint equals 1cup. And everybody has a measuring cup or some way to measure 8ozs. So to error on the fat side with the oil is no big deal (with in reason of course). You will have to play with the plug gap for your self, .025 or .030 or some where in the middle. My feeling is the .030 will work best, I really don,t know. Good luck.
