Good motor -> Chrysler 70 hp???

[7lazy77]

I recently aquired my first boat that has a Chrysler 70 hp motor on it. From my research, this motor was made in the 70's. I would mainly use it for fishing/trolling, but would occasionally like to pull the kids on a tube. Is this a good motor? Any problems/issue's to be aware of with it? Is it a problem trolling with this make & size of motor?
The reasons for my questions is I was told by somebody here at work that I can ruin this Chrysler motor by idleing it for extended periods or trolling. Just wanted to get opinons from knowlegable people on this motor. THANKS

 

[ljc1957]

Re: Good motor -> Chrysler 70 hp???

Lazy, If it's in good shape and it runs good, go for it. As far as trolling. I would recommend that you find yourself a good 4-6 hp kicker/trolling motor. You should be able to find a decent one for around $300.00. I don't know about ruining your 70 at lower rpms but I don't think it's particularly good for it or any large outboard. I've always used my main engines to transport me to the fishing grounds, then I fire up the trolling motor for fishing. It's also good to have a backup motor when you're a long way from home. I own a 50h Chrysler and I really like it. Go through that 70, there's a thread on here laying it out, and I'll bet that engine will last you a long time.

 

[huskerdaninva]

Re: Good motor -> Chrysler 70 hp???

I've got a 1969 70 hp, model 7071. Mine sat for well over 20 years when I got her a couple of years ago with the old Valiant she came attached to! Anyway, mine needed the points cleaned/adjusted, and a CD box to start. I've rebuilt all three carbs, the fuel pump, set the timing, replaced the waterpump impellar, installed a lower unit seal kit and put in new LU oil. Also installed new head gasket, water jacket gasket, plugs, wires etc. (All with a LOT of help from this board!) I can go out right now, put fresh fuel in the tank, pump the primer bulb a few times and she will start and idle beautifully all day long in a container of water. Having said all that, I do know that these outboards were designed for WOT operation and I would imagine that she will carbon up quickly if you run her at low RPM's for an extended period of time. FWIW, I love my 70hp outboard and the fact it is old, simple, and not many folks run 'em anymore.
If your's is solid, get a manual, check the basics and do a little maintenance and I'm sure that you'll be a happy camper...

 

[SparkieBoat]

Re: Good motor -> Chrysler 70 hp???

they do not have a good reputation around where I live. I would not sink a pile of cash into that motor if it were me. But many people in this forum seem to love fixing up old motors..you can find a 80s model 70 hp outboard around here in running condition for $500-1000.