Hi all, new to the forum but been reading threads for a while now. I've got a question regarding Efco saws, specifically the 156,162, 165 platform. Hoping to get some input from an expert with these things. I've got a post 2007 model 156 with the square coil set up, and a OEM 962 head and piston I'm planning on installing. My question is about the coil set up, the pre 2007 models used a round blue coil that bolts up differently (lower) than the square gray coil that's currently on it, I have both square and round coils so I could go either direction with it, but if I wanted to use the round one I'd have to make a slight modification to the case and wouldn't be able to switch back to the square one if I went that route. I'm wondering if there is any advantage to using the earlier style round coil (more power?) or if it's essentially the same no matter which I use. I've personally ran both the 956s with the old style and the 156s with the new, and I feel like the older saws had more grunt but that may just be in my head? Would appreciate some input if there is an Efco guru out there. Thanks!
Need an Efco Expert
- Thread starter smithw
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I’m not an expert on Efco, but a spark is a spark. There may be some slight benefits to having a coil with a timing curve built-in, but most of them are timed flat across the RPM range, or at least in the working RPM range. If one ran better than the other, advancing or retarding the spark timing by filing the flywheel key will usually get you in the same range. I’m not certain if one of them is limited or not but that would be another reason to install an unlimited coil
I hadn't thought of it like that, but that makes sense. Sometimes I can just get caught up in my head and miss the obvious, so thank you. I don't suppose there's a good way to know if a coil is limited or not apart from manufacturer info? There's definitely a lack of that when it comes to these Efcos.
Sometimes it’s written on the coil. Usually if we don’t know, someone has checked or has seen the specs. Might be tough finding out with Efco not quite as popular of a brand.
