hole in the head...

[cwhubb]

I have an old 906 head that has a small hole drilled in it right next to the valve spring from the top of the head right into the water jacket wth? I'm guessing someone goofed on the steam hole mod lol. anyway the head is in really great shape, will devcon or the steel reinforced jb weld fix it? the hole looks to be around 5/32

 

[IQ52]

If it won't be in the way of the spring, just drill the hole out to 5/16" use an 1/8 pipe tap and install an 1/8" pipe plug. For reasons of national security I cannot reveal why, but I have done it many times.

 

[Daves69]

Had a 906 head with the 1/8" plug out the end. Got questioned a lot on that.

 

[dvw]

If it won't be in the way of the spring, just drill the hole out to 5/16" use an 1/8 pipe tap and install an 1/8" pipe plug. For reasons of national security I cannot reveal why, but I have done it many times.

Poor mans sonic check for valve pockets or port roof?

 

[Meep-Meep]

.........Where the rain comes in.

 

[cwhubb]

@ IQ52 I'm going to use that national security excuse lol, I would never have thought to tap and plug it brilliant idea
@Dave you can tell them it's a side oiler lol

 

[cwhubb]

got it done, looks like it sealed nice and tight