ORIGINAL: s5lin
Hi all,
I actually ordered two STS 30 engines, and one had bad o-rings out of the box on the low end and the other carb had a major airleak. I will contact the guy I bought the engine from and see how we will go about the warranty issue.
I like the way the engines are built. The machining looks great, but it seems the carbs for me, I had bad luck. If anyone else that represents STS would like to PM me about the carbs, please go ahead and do so. I want to make the engines, work, but it seems the carbs are the major problem for me.
Thanks.
Thanks for the info guys! I am going to pull the carb and remove the both the
high and low speed needles when I get my engine this week. I heard that
an engine can sit around in a warehouse after manufacturing for quite a while
and the o-rings in the carb can dry out causing them to tear. A trick I
learned some years ago on that o-ring problem is to carefully remove the
high & low speed needles to expose the o-rings on each, and take a "small"
amount of Associated's green slime used for lubing the seals on shocks and
apply it to these o-rings. Don't over do it with the grease as a little goes a long
ways. I am also as an added percaution going to remove the head and backplate
as long as I am at it, and flush out the combustion chamber and crankcase with
fuel and coat everything with after run oil. Lastly I will use some oxygen safe
silicone sealer and use a small amount on the banjo fitting on the carb, around
the base of the carb, and the backplate to eliminate any possible air leaks that
create a lean run condition. This may seem not necessary or overkill to some
hobbists but it does not take much time and effort to perform these procedures.
It should insure your new engine is ready for a proper break-in, and that you have
eliminated as many possible problems as you can!
If you are not smelling nitro fumes and listening to the sweet song your not LIVING!!