Vector/Inline 150 Power
Hey Randy,
I just picked up a cherry 76 Vector with a 150 In-line on it. Trim and
tilt factory for that year separate pump and cylinders. I cannot remember
the stock gear ratio for that year but I will be installing a 1500XS lower
unit with low water pick-ups and I believe the 2:1 gear ratio. ? is where
do I start with the prop shaft height and with what prop. I know you have
been asked this. I plan on rebuilding this motor this winter with boyeson
reeds, Wiseco Low dome pistons and some mild porting on the exhaust side
with a V-6 Aluminum flywheel with a custom rapair stator. I would like to
see 6500-7000 RPM with this motor. I know that detonation is a problem for
these motors. In the past we just backed the timing off a couple degrees
and removed the exhaust tube and drilled some 1/2" holes in the
housing to let them breath a little as well as a size bigger jet in the
top carb. with steel on steel needles and seats. I will be
registering as a member as soon as I get the baby in top shape. Can you
install solid mounts in this motor have you ever made any or will your
current one's work.
Regards,
David Scott
Canada
Dave,
Don't go porting up the block if you plan on the low dome pistons. The
thing will make LESS power and not have any bottom end. Leave the high
dome pistons in set the timing up and buy some race gas (high octane) to
mix 50-50 with your pump gas. This is way less expensive and the only way
you will see the performance you are looking for: the 150 inline had
high-wide ports already.
Randy
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has no control over what you do with your boat. It is up to you to
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guidance for your high performance boat/motor of which you are the one
responsible for the risks involved.
Thanks,
Mark C.
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