Head bolt thread sealer

[B1B Keven]

An hour of searching and I'm done.

Which 218/230 head bolts get tread sealant? 

[Merle Coggins]

Be safe and do them all. It won't hurt on the ones that don't go into the water jacket, and will certainly help those that do.

[Don Coatney]

I did them all.

[pflaming]

I asked a local auto machine shop what he did, he concurs with Merle and Don, he does them all also.  I was advised some time back to tap the threads AND that, this I didn't know, there is a tap for holes that dead end. Good advice. 

Edited July 28, 2017 by pflaming

[B1B Keven]

Thanks guys!

[NiftyFifty]

Flat tap or a tapered tap...very handy to know about those....and left turn (reverse) drill bits when you snap off a bolt.  Get yourself some PTS sealer from permatex, great stuff in a tube and easier to apply...but if you buy the new headbolts from Summit, they already come with it pre applied.

[B1B Keven]

4 minutes ago, 4mula-dlx said:

Flat tap or a tapered tap...very handy to know about those....and left turn (reverse) drill bits when you snap off a bolt.  Get yourself some PTS sealer from permatex, great stuff in a tube and easier to apply...but if you buy the new headbolts from Summit, they already come with it pre applied.

In, sealed and snugged to about 25 lbs. Need to borrow a torque wrench. New head bolts from Headbolts.com     http://headbolts.com/store/p/165-cylinder-head-bolt-kit-flat-head-chry-/dodge-plymouth-chbs-1164.html

[wallytoo]

20 minutes ago, B1B Keven said:

In, sealed and snugged to about 25 lbs. Need to borrow a torque wrench. New head bolts from Headbolts.com     http://headbolts.com/store/p/165-cylinder-head-bolt-kit-flat-head-chry-/dodge-plymouth-chbs-1164.html

that's where i bought the ones for my 237.  about 1 hour away, too.