Engines > Restoration of Model Engines
One lung FM Z 1 1/2 HP
gipetto:
there could be vacuum leaks between the carb and the engine. ensure that you are using good gaskets, even if homemade at every joint. it's ok to use some easy start to see if it will fire. first check to see that compression on the engine is good. it can be much easier to start an engine with an electric drill, maybe in your case it's too large to do so. you might need to choke the carb also.
it would be better if you could see the carb running on a gx160 so that you know it is good.
Geo46:
Hi, from my calculations it appears that it engine about 58 ci, 17 CFM and the suitable carb would be 7.3 CFM , where would I find a carb that size?
Cheers!
Geo46:
I have compression, sealed all around manifold, it will pop when I spray starter fluid, not getting gas from carb, will try changing main jet.
Thanks
Geo46:
Hi All, after further investigation, the cyclinder bore is 4” stroke is 4” and the RPM’s are 500.
Can someone check my figures it seems I come up with 800 + cc’s.
Thanks
gipetto:
wolfram alpha says the volume of a cylinder of 4" diameter by 4" length is 6.28 cubic inches or 103cc
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