Does this look like a cracked head?

djmeaney

Petty Officer 2nd Class
Joined
Dec 28, 2007
Messages
129
Just trying to confirm that a crack this size would be enough to allow water into the engine oil.

Thanks2.5L head - sm.jpg
 

Grub54891

Admiral
Joined
Jun 17, 2012
Messages
6,069
Re: Does this look like a cracked head?

Looks like a crack but,I'd have it checked at a machine shop to be shure.
 

Failproof

Petty Officer 1st Class
Joined
Sep 26, 2011
Messages
273
Re: Does this look like a cracked head?

Could be. But the way it crosses the hole in the center is odd, and it runs across some internal webbing. It could also be an imprint from foriegn material being compressed when the head was installed. Grainy pic, viewed on a 3 inch cell phone dosent help!
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
49,504
Re: Does this look like a cracked head?

looks like a crack. best to dye check it.
 

dollarten

Petty Officer 2nd Class
Joined
Jul 28, 2011
Messages
136
Re: Does this look like a cracked head?

It could let water in to the cylinder area but not the crankcase . The water would have a hard time getting past the piston and rings seeing that there is about a .015 end gap on the piston rings
 
Top