I think this subject was covered in detail at some point in the past, ( but I don't know how to find it ?) but both myself & another Y-Block owner are having problems. He has some rockers that won't hold a set & I've got a spare set that many are so tight as to be unusable.. Briefly, 1956 -1.54/1 rockers used two piece  adjusters, is that correct?. (markings?) However, most of the spare rockers I have here, which I believe are from 1957, and are marked  ECG xxxx B 2, came to me with 1 pce adjusters. Even though they were soaked for some days in solvent, then with oiled threads,  most will barely turn, even using a 8-1/2" box end, holding the rockers in a vice!  Can someone clarify these situations?,  For instance, which part is an interferience fit & so on?  Thanks        


Paul

The one piece type interference adjusters are tight, no doubt about it. That's what you want. The minimum specification in the manual is 3 pounds. Be sure to eat yer Wheaties!

I’d try some localized heat but carefully. I use one of those crack pipe torches from Harbor Freight. I just used one to get the screws moving on a head light assembly. Saved them all.

56 Vic, B'Ville 200 MPH Club Member, So Cal.

Someone could have used epoxy on the threads before you got them.  Seen that before.