Plaining head

[Bigborebanshee375]

I have a 392 Athena kit with a 4 mill and was wondering if it would be safe to get the head plained just to be safe since I blew the head gasket? Any help is appreciated thanks in advance.

[hercalmighty]

Do you know what your squish is? If not, measure it before you get the head plained

[Bigborebanshee375]

I have no idea. I'm new to the banshee. I'm taking the head off tonight. Stupid question but what is squish?

[hercalmighty]

It's the measured distance between your piston at tdc and the head. It's pretty simple to do. Search for the procedure and do it before you take your head off.

[Dixie normus]

It would be easier to Just do a search on here about squish. That being said. The head needs to be on the motor to check squish

[Bigborebanshee375]

OK that shouldn't be a problem to do then. How much clearance would you say I would need to have enough room to plain the head?

[hercalmighty]

Measure your squish then you will know how much you can mill your head. For a mild motor a good squish would be about .045 to .055 inches

[Bigborebanshee375]

Ok thanks for the info. Really appreciate it.

[sleeper06]

If you don't need much just a resurface, I use a block of granite and sheet of sandpaper move head in figure 8s start 100 grit then 220 finish 400 it's pretyy easy just keep in light pressure . Measure it before h start and when done on a plain resurface I have seen anywhere between .003-.007 taken of head

[Bigborebanshee375]

OK. I will try that when it warms up. Thanks