Hi all,
I was just reading one of Lockwood's "Power On" aricles titled Keeping
Cool. The paragraph "Signs of an Overheated Engine" gives some telltale
signs, one which is " The cylinder head bolts suddenly become loose."
Garry, has she gotten too hot maybe? Do you use waterbased antifreeze or
Evans NPG+?
Garry wrote:
>
> Bob Harrison wrote................
>
> " Be sure to do the head re-torque
>
>> and valve reset (unless they are hydraulic) at no more than 5 hours,
>> then repeat every 5 hours to 25.
>
>
> I would like to remind all Rotax drivers to periodically check the
> torque on the head bolts of their engines. This past weekend I sprang
> a major in-flight oil leak necessitating an emergency landing. Oil
> was gushing from between the head and the cylinder. Upon landing I
> checked the head bolts on that cylinder and found two of the four to
> be less than finger loose. After tightening them up, I checked all
> the other cylinders too, and found 3 of the remaining 12 bolts to be
> slightly loose. All should be torqued to 200 inch pounds. For
> reference purposes, my 914 engine is 7 year old with almost 500 hours
> on it.........and I never checked the head bolt torque before.
>
> Garry Stout
> N4220S A060 TriGear
>
>
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