914 loose head studs

by David Tennant in 912 / 914 Technical Questions 5 years ago

I have a 914 just came into my shop with loose head studs, the top front and rear nuts are only finger tight, there is a lot of staining and leakage between the cylinder and head joint.

looking for advise as to what extent i need to go to with further inspection, i am thinking its probably worth taking the heads and cylinder of and inspecting the head and cylinder as well as the head studs.

has anyone else had this problem and what did you do ?

Re: 914 loose head studs

by Garrett Wysocki » 5 years ago

Garrett Wysocki

1 572 1.45k

I heard about this problem in Rotax Classroom training. The engine may have been overheated in which the aluminum heads get soft. The heads can be tested for hardness. If they are soft they must be replaced.

Thank you said by: David Tennant

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914 loose head studs

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