Intake valve seat angles

by Ryan Courreges in 912 / 914 Technical Questions 3 years ago

Does anyone know if the valve seats for the intake valve are the standard 45° or are they offset at all like some motors are? I need some minor valve work on my motor, but want to make sure it gets done with the correct angles.

Thanks,

Ryan

Re: Intake valve seat angles

by Roger Lee » 3 years ago

Roger Lee

126 5.13k 4.58k

The valves are hardened and all you can do is clean them. DO NOT try and grind them or you will be replacing them. The valve seats can be re-worked, but you need two angled reems to do it. The valve guide can be reemed if you have the proper size reem and have some idea on how to do this. Doing either of these can ruin them if done wrong and then it will hurt your pocketbook. Things like this are covered in the Heavy Maint. classes.

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

Thank you said by: RotaxOwner Admin

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Intake valve seat angles

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