oh,oh, 470 problems?

[longhairmtnman]

Yay, I get to play what's wrong with my 470! (sorry, too much reading all the 470 threads!)

I am new to the inboard engine boat life, and bought my first boat, here is everything I know about it, most of which I learned from you lovely people! I have other questions but will start slow....

1974 fiberform
19?? 470 ( can't find the damm #'s)
mc-1 drive.

I begin my introduction to the boat by having it heat up on the muffs in my driveway... and the fun begins. One thing leads to another, and I place my orders for exhaust flapper, raw water pump, lower & upper drive and transom seal kits, thermostat, intermediate shift cable, exchanger(4") gasket, trim sending units and the minimal tools, as I am trying to be pro-active and eliminate any problems that may arise. Everything is going well but slow. Then I pop the water resevoir off doing my due diligence, and find this.

How screwed am I? Please be gentle, I'm vulnerable right now!

 

[stonyloam]

Re: oh,oh, 470 problems?

It looks like you have a much newer engine than a "74". That exhaust manifold is a post "83" type. Is it cast iron or aluminum? No you are (probably) not screwed. Just inconvenienced. That manifold may be usable or reparable.

You know, I might be wrong there, do you have a photo of the reservoir?

 

[longhairmtnman]

Re: oh,oh, 470 problems?



Can anyone explain about the gasket - manifold water opening difference in size?

 

[longhairmtnman]

Re: oh,oh, 470 problems?

I did not notice any antifreeze loss. I guess a pressure test is in order?

 

[stonyloam]

Re: oh,oh, 470 problems?

OK you have the new type manifold. Cast or aluminum? That slot feeds coolant up into the reservoir. I do not believe that crack will do any harm. You might see about having it repaired so it does not get worse. A cooling system pressure test when you get it back together. Can borrow tools from Autozone.