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Posted on Jan 02, 2017
hi either that or remove the power head so it is easier to work on you will have to replace the water pump impellor anyway
i have done the following with seized motors and" most" of the time it works
use heat on all the bolts before you try and undo them heat the head of the bolt up then allow to cool then use a socket or ring spanner the heat will travel down the bolt ,transfer into the ally casting expand it and you will get the bolt out without shearing it
pistons /this sounds harsh but the motor is goosed at the moment anyway make shure power head is very sequre /socket or ring on flywheel nut 4/5 ft piece pipe over socket bar heat up engine oil OUTSIDE to almost boiling pour down plug holes until full leave 10 min pour oil out reheat it pour it in again 5 min try the pipe/socket clockwise GENTLY you are using a lot of leverage here just move it back and to a bit /then a bit more /then a bit more until it is free now strip it clean the bores up renew what you have to /put it back together
if that didn't work /i presume all the ancillerey's are off the motor /carbs ,elecrics etc plugs out /put p/head in a bucket full of diesel oil( cheaper than penertrating oil and better) leave it 7 days get ALLthe oil out send wife/partner /g/friend out for the day put the oven on max heat 300 degput motor in oven 2 hours max quick as you can /leather gloves or what ever hot oil in cylinders get a socket on the crank shaft and try it
last try you can only do this if a piston is on or near tdc modify a spark plug to take a grease nipple /cut the thread off /long reach plug and braze a grease nipple in it /put as much grease in the bore as you can screw the modified plug in and use a grease gun to force grease in as the grease will not compress it WILLpush the piston down untill it uncoveres a port /messy but at least it has moved it once you have got some movement eventualy the motor will free off best of luck merlin v12
Posted on Aug 29, 2009
Hello! Check the serial # again, The serial# 3134966 isn't a valid number...Also do you mean 220HP? Also the year of the engine should be directly below the serial #...Describe the condition in order to set the retail price...
Posted on Feb 04, 2010
get the kit from boat shop all it takes is four bolts and remove the lower housing.. when you put the impeller in... flex the blade the same way take a photo before you take it apart...inside get a new gasket for between the upper and lower housing too...
Posted on Apr 09, 2010
you might just have dirt in the water view port try a real smal drill bit BY HAND to clean the hole . if the morot doesn't run hot then you really don't have a problem
Posted on Apr 27, 2010
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