mercruiser 470 cracked exhaust manifold

[tigga350]

I have a 1978 mercruiser 470 3.7 lt. 170hp with the "old style" exhaust manifold. after some tests i found that the manifold is leaking coolent into the exhaust ports internaly... i cant see the hole or crack, is there anyway to have this manifold fixed...ive looked everywhere and i cant seem to find a replacement....if anyone has any information for me i would greatly appreciate it..thanks

 

[wire2]

Re: mercruiser 470 cracked exhaust manifold

Maybe here;

http://www.westmarine.com/webapp/wc...e&storeNum=null&subdeptNum=null&classNum=null

 

[JoChek219]

Re: mercruiser 470 cracked exhaust manifold

www.breezeworks.net its a whole site dedicated to the 470's

 

[romy624]

Re: mercruiser 470 cracked exhaust manifold

is it atifreeze getting in to the cyclinder or seawater? im having similar trouble. seawater getting into back cyclinder . please reply

 

[Don S]

Re: mercruiser 470 cracked exhaust manifold

romy, start a new thread with your question, don't ask your question on someone elses thread.

 

[romy624]

Re: mercruiser 470 cracked exhaust manifold

im new not sure how to start new thread

 

[Don S]

Re: mercruiser 470 cracked exhaust manifold

It's simple. go to the main page of the forum you want to post in, at the upper left and lower left of the list of posts is a button that looks like this:

Want to guess what happens then?
PM me if you have any problems posting.