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Plan on doing a lot of trolling this year. Have heard that the splitfires work great for trolling at low speeds and eliminates fouling of the plugs. Is this the better way to go or just adjust current plugs at a higher gap?
tmise, I'm a bit old fashioned I guess, so I'd suggest using Champion spark plugs. You can gap them a bit wider if you want, won't hurt anything. Keep your fuel fresh and mixed correctly, check the plugs a couple of times a month and the rest of the time, focus on the trolling!
I"m surprised that Splitfires are still around. They really had problems in the past with outlandish claims of milage and power, I think the Federal Trade Commission even got involved. Then also there was the breaking off of their split ground electrode which damaged the pistons and cylinders as it bounced around inside the engine.
See your parts dealer for a hotter plug. My experience with increasing the gap by 1/3 on a plug that is prone to fouling is that fouling increases a proportional amount ... :cold:
See your parts dealer for a hotter plug. My experience with increasing the gap by 1/3 on a plug that is prone to fouling is that fouling increases a proportional amount ... :cold:
Well, good on ya. I trolled with a carbed 75 two banger and standard plugs until fouling became untenable, increased the gap and the fouling went from daily to hourly. Went to a hotter plug and the problem went back to very infrequently. I've since run a carbed 140/2, just went to a hotter plug without the intermediate disappointment when fouling again became an irritant. A 140 and 225 fours with injection had no issues when trolling for 5-8 hours each time out ... :sleeping:
The outboard I will use for trolling is a 1957 Evinrude 18hp Fastwin. Most likely will just stay with the Champion JC6's that are in her now and open the gap.
I wonder if surface gap plug would work any better then conventional style. I had surface gap plugs on my old Mercuy 115 inline six years ago and never had any problem with them. Do they still sell them and if so would then work to keep fouling at a minimum...? If so he could easily find heat range and conversion types to fit his engine I'm sure...
If the fuel/oil mix is accurate, and the ignition system is up to snuff, there should be no fouled plugs. Not at the frequency of some of the posts above. Todays oils are much better than the old days, and plug fouling should not be the problem is used to be. If you are having fouling issues, may want to look to your ignition system as your spark could be weak. I have never tried some of these cheap oils either though, so that may be a factor in this.
