Tap sizes to chase threads for rebuild.....

[fastasleep]

Anyone know the tap sizes I need right off the tops of your heads for the all bolt holes I'll encounter for a rebuild. I did a search, but didn't have much time to comb through all threads brought up. Sorry! It isn't a lazy thing, just a time thing; I wanted to run by the hardware store and Napa before I went home.

Thanks guys, sorry about the inadequate search time.

-Les
1990 2.5 in a Plymouth Voyager.

[turbovanman²]

Don't use a regular tap for chasing threads, you'll weaken them. You need some thread chasers designed for cleaning up threads. The head bolt holes are 11x1.50 mm

[tryingbe]

M8 x 1.25 for exhaust/intake threads.

[fastasleep]

Great. I will grab these, and get chasers not the regular bottom taps. Do you guys use red threadlocker on rod, main and head bolts (studs)?

-Les

[turbovanman²]

Great. I will grab these, and get chasers not the regular bottom taps. Do you guys use red threadlocker on rod, main and head bolts (studs)?

-Les

NO lol!, no threadlocker, use oil or moly lube.

[Turbodave]

NO lol!, no threadlocker, use oil or moly lube.

I thank that should read no threadlocker. But you should use oil or moly lube.

With factory style headbolts I use a thin coating of oil on the bolts. If you're using ARP fasteners I believe there are different torque specs depending upon what you lube the threads with.