I'm in the process of buying an engine for my Ziroli P-40, because I'd like to use Keleo's scale exhaust system, I'm leaning to a 3W-75 engine.
I heard a lot of scary stories about 3W engines. Somebody told me I can end up buying 1 till 3 new ignitions for this engine. Can anybody give me some advise about a 3W-75 engine?

Thanks

Gerhard

Use to have one. Was my first gas engine, the "i" version, rear carb. It would spit fuel into the radio compartment till I installed a bugle with the foam filter. Solved that problem. Then it started to get really hard to crank because it was not drawing fuel. Sent it into Cactus and they found the isolation block was leaking so the pump would not work. Found out later this is a common problem with the early versions. Maybe they have improved the design. I would still rate the engine as good with good power. Very solid casting on the case. Would I buy another one for a special project?-probably so.

Hi,

I have a number of 3W engines and they are excellent engines. Large singles tend to vibrate regardless of brand and 3w is no exception. The older ignitions tended to have reliability problems but that issue seems to have gone away with the new style ignitions. With any ignition engine, the ignition are the weak part.

Elson

I have nothing but 3-w. One is over 18yrs old and still running strong. The two others are 150's and have never giver me any problems. Call Bobby at Cactus, you'll never look back. Dennis