I'm looking at a Islander 30 MKII w/an Atomic 4 gas motor. I'm looking for feedback on reliability, availability and cost of parts. Also, are there any inherent problems I should be looking for?
i have an atomic 4 in my cat 27.the water jackets can be cleaned fairly easily.there is a water jacket side plate under alternater.the problem is that those 8 quarter in bolts will break off in block if they are rusted bad.i broke 7 off in mine.if they do there is a kit on moyer marine to fix them,i did it a cheaper way.i drilled the holes out to 7/16 then welded 3/8 studs in hole.1/4 in bolts always break on me.i also removed thermostat and routed all water into water jacket side plate for maximum cooling.someone is going to tell me i shouldnt have done that but these motors didnt originally come with thermostats.the later models did.ok if the moter has been sitting up,or if not much water is being exhausted,first, take the exhaust manifol off and flush it good.u can flush it without romoving it, but it is probably so full of crap it wont come out unless u remove it.if it is indeed full of rust,then u definately need to remove water jacket side plate.clean all the crap out.remove and clean thermostat.moyers thermostats are pretty high so i advise boiling it and seeing if it will open,if it opens 1/4 in then its good because in engine it will have pressure from below and open fully.u may opt for no thermostat as i did.the water pumps are oberdorfer,take it out clean it if needed.inspect impellar. these are the easiest engines there to work on.basically it is the same as a 20s model a ford.u can crank it with a hand crank too.i turn mine over by hand and it cranks right up.i got carried away and didnt ask u if the engine runs.if u have any problems let me know k.The issue is saltwater boats with raw water cooled blocks are getting pretty near the end of the motors life due to block rust through
A saltwater boat with a freshwater cooled block can last almost forever
I have two very in depth and long threads over on Moyer Marine detailing my nightmare, second one with pics :dance:I absolutely don't accept the ethanol/water argument as valid
i agree with ross there must be water intrusionwhat kind of fuel pump
For its size, I think it packs quite a punch. Put it in a boat too big - like any small auxiliary - and you'll be disappointed. Same goes for a prop too big.I have also heard atomic 4's called anemic 4's. Are they super powerful or super weak?