fin dampers on kt

[jamie t]

we have a problem with losing our fin dampers on the head of our kt, I have seen some KT's with drilled hole across the head fins and a rubber type tube through it. my question in

what hole size do they drill
what rubber type tube do they use

replacing these is a pain in the butt, one motor is ok bu the other seems to lose them all the time

cheers
jt

[tom]

I wouldn't use the fin dampers at all on a KT. They are designed to reduce harmonic vibrations and hence noise, but they do reduce the cooling efficiency and with the head especially that is critical on a KT.