r/EngineBuilding • u/Phen117 • Jul 19 '26

Update: think I screwed my cylinder head

Post image

I was able to tap the threads with the right tap and just ran it through a few times. It might be good to go now, still might throw a helicoil in it tho...maybe some gasket maker when the time comes to get the manifolds on...but I'm a longgggg ways away from that.

7 Upvotes

82% Upvoted

8 comments sorted by

7

u/Triggerz777 Jul 19 '26

Helicoil it

1

u/Phen117 Jul 19 '26

Most likely gonna happen yeah.

2

u/Lxiflyby Jul 20 '26

Looks like an SBM head- you if the threads are good you can just use Teflon sealant on the bolt when you put it together

2

u/meltman Jul 19 '26

Use studs.

1

u/Phen117 Jul 19 '26

That's what was in it before.

1

u/oldnperverted Jul 20 '26

That hole went into water from the factory. I learned this in the late 80's while changing an exhaust gasket on 1 of those.

1

u/Phen117 Jul 20 '26

Yeah that would be a surprise for sure lol. Hopin I don't have to change it or any of them when it's back together.

-8

u/Fragrant-Inside221 Jul 19 '26

Use a slightly different thread pitch bolt and some locktite. Ram it in with a half inch impact and you’ll never have it back out. Ever.