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I bought a TT Z earlier this year that needed engine work and I just got
around to stripping the engine down. It has Venolia pistons in it. The
problem with the engine is that one of the oil squirters broke off, got
chunks in the oil, and spun a rod bearing. Now that I have it apart and
can look at it, ALL of the oil squirters are broken (the tab sticking out
with the hole for the screw is broken on one side on the two squirters
that didn't fall down). It looks like the piston might have bumped them
on the downstroke. I know Venolia pistons are not very common, but I
was wondering if anyone else has used them and had this problem. I
don't want to reassemble and have the new squirters do the same thing. One last question, is it ok to grind a little relief spot on the pistons where
it lines up with the squirter? I only ask because of the heat causing a
crack where I grind it. I would sand the area I grind so there aren't any
peaks or valleys where cracks would likely form.
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