I just installed a "high volume" oil pump in my 1989 GMC 350 v8 with 163,000
mi. Pressure went from approx 10 - 20psi up to almost 60psi, which is great
but the guy at the parts store said a new nylon sleeve that secures the
drive shaft to the pump will work fine. But the note that came with the pump
says "If the STEEL SLEEVE is not used the oil pump driveshaft can be
damaged, resulting in oil pump failure and voids the warranty". Any readers
have experience with a high volume oil pump and will a nylon sleeve really
fail? I know, I should have read the notes first...surely these parts
counter guys know a little bit, though.
Steel all the way..... this should not even be a question. If you have the
manufacturer saying that you will void the warranty if you do not use it
then this is a no brainer.
MOST parts counter people are either failed mechanics, or just book smart
enough to cross numbers out of a catalog. Hell three of the parts people at
my local auto parts store are fresh out of high school, or still in high
school. If you don't believe me as a few of them the same question and see
what kind of answers you would get. I have got to the point that I will go
on line, look up a part number myself, and just go up to the counter and
give the person that little slip of paper with the number on it. If it is
wrong, then either the wrong part is in the box, or I straight F***ed up.
Then 90% of the time will follow manufacturers instructions, unless I know
there is a better upgrade (alternative)
If you find a parts person that knows what the hell is going on, stay with
> If you find a parts person that knows what the hell is going on,
> with him/her
Problem is this is the person all the mechanics call in for so they
are always extremely busy. I know what youre saying though.
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