M/C Questions?

[a1nowell]

Is the 470 the only engine Mercruiser has made that has an aluminum block and a cast iron head?

If there are other made like that are any direct cool without a heat exchanger?

 

[Bt Doctur]

Re: M/C Questions?

Yes
No
that motor is a bastard child of Mercuiser. never been in anything but a boat.

 

[ziggy]

Re: M/C Questions?

Is the 470 the only engine Mercruiser has made that has an aluminum block and a cast iron head?

i could be mistaken, but i believe the new vazer(vaser?) is an aluminum block w/cast iron head.

best i understand, when using dissimilar metals for head and block. they will always be fwc due to needing a constant temp throughout the engine.

 

[a1nowell]

Re: M/C Questions?

I take it by the number of stars a Vice Admiral out ranks a Rear Admiral!

So anytime they had an aluminum block and a cast iron head, they used a seawater cooled heat exchanger and a contained engine water cooling system, cooled by the heat exchanger?

 

[Bt Doctur]

Re: M/C Questions?

Thank You Ziggy, never thought to look back that far
http://www.marinepartsexpress.com/Merc_Schematics/100 VAZER/1A035000+/

 

[ziggy]

Re: M/C Questions?

I take it by the number of stars a Vice Admiral out ranks a Rear Admiral!

kinda sorta. it's all based on quantity of posts, nothing more.
me, i'm just joe boater that works on my own boat + read a lot and have high interest in boats.

Bt Doctur is a marine tech best i understand.

i'd listen to him before me...

So anytime they had an aluminum block and a cast iron head, they used a seawater cooled heat exchanger and a contained engine water cooling system, cooled by the heat exchanger?

yes, that's the way i understand it.

 

[a1nowell]

Re: M/C Questions?

Ziggy & Bt Doctur,
Your both a great help.

I am a decent mechanic, but sometimes have trouble with diagnoses.

Thanks for your help.

I'm not going to do it yet, but someday I'm going to hook the freshwater sterndrive straight to the engine and by pass that heat exchanger. But I think I will wait till she's on her last legs.

 

[Eric 3.7LX Alpha 1]

Re: M/C Questions?

Ziggy & Bt Doctur,
Your both a great help.

I am a decent mechanic, but sometimes have trouble with diagnoses.

Thanks for your help.

I'm not going to do it yet, but someday I'm going to hook the freshwater sterndrive straight to the engine and by pass that heat exchanger. But I think I will wait till she's on her last legs.

I'm not sure why you would want to do that?
That heat exchanger is probably the best part of having a 470
What would lead you to want to eliminate the XG?
You having an overheat issue?