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R-N-D
02-23-2009, 07:35 PM
Noticed this today as I was tearing my 70 apart. It, (Hole), doesn't look like it's something that is good. Is there a fix or am I screwed? Is it trashed or what? Or, is it nothing at all to worry about? Any suggestions... Thanks.
TriMotoMan
02-23-2009, 07:40 PM
idk what it is but u might be able to JB weld it
KASEY
02-23-2009, 07:46 PM
if you don't know DON'T answer!!!! that is a normal casting part of a honda 70 head NOTHING to worry about!!!!
oscarmayer
02-23-2009, 08:20 PM
haha i was going to say the same thing but u beat me to it! ^ mr. quick draw magraw ;)
R-N-D
02-23-2009, 08:27 PM
Thanks guys. I really appreciate the help here. Sort of paniced there for a minute. Thanks again, made my day!!
yamaha_ripper98
02-23-2009, 08:32 PM
there is no reason to plug it i would tig a piece over it to make look better but im in school to be welder so i get to do all my metal work for free and for a grade!!!!!!!
atctim
02-23-2009, 10:16 PM
I would not tig it - I am guessing there are cooling properties involved with that hole!
R-N-D
02-23-2009, 10:21 PM
If it was there or should be there, I'll leave it be. I've learned not to mess with things, I've been that route before and it's too costly and time consuming. Again, I appreciate all of your help with this. Thank you!!!
beets442
02-23-2009, 10:25 PM
Can I ask what caused the hole?
Howdy
02-23-2009, 10:44 PM
Can I ask what caused the hole?

Did you not read Kasey's reply above?? It was made that way!!
Howdy
beets442
02-23-2009, 10:57 PM
A big hole like that?In the head?
TriMotoMan
02-23-2009, 11:04 PM
my bad i was jus suggesting that if it wasnt supposed to be there he could fix it with JB weld
Howdy
02-23-2009, 11:12 PM
A big hole like that?In the head?

Yes, a hole like that. It is normal, made that way and won't hurt a thing. Kasey is 100% correct and knows darn well what he is talking about. IMO, he has probably forgotten more than some of the users here actually know.

Howdy
KASEY
02-23-2009, 11:14 PM
WELL LETS SEE ,,, if i can answer this so you all will understand,,, when you cast parts you need exit ports to relieve the casting mold material,, more than likely its sand,,, so that would be a sand exit port that is also used as a bridge with a few short cooling fins to help dissapate heat buildup in the head from the internal combustion going on inside the cylinder when its running,,, OK
beets442
02-23-2009, 11:34 PM
I'm not knocking anyone. Just looked like a chip hole. Like something might have hit it. I can see where it didn't finish casting. Sorry if I offended you. Just curious.