Was wondering if any one has ever had a problem with a hairline crack going from an intake valve to the spark plug hole. I pick up a JG pr3 and aftercleaning it a noticed a small crack. I took it to a local machine shop and the told me almost 500 to fix it, Ive been trying to get a hold of jg to see what they recommend. any help would be appreciated

 

bump

 

jb weld... you could try and weld it..... when i welded mine a while ago it warped the head and had to be cut... again.

 

Return and get a new one if its just out of the box and haven't installed it. Do a leak-down test if installed. But I would just return it and get a new one anyways. Do you know the extent of the crack, depth and length? How does this crack effect the structural integrity of the head, too many unknowns, its not worth it.

$500 to repair? How much did you pay for the JG?

 

No its a head that I bought used for $570, a leak down and compression test was done and no problems were found, I waiting on a quote to fix it from JG