• Hi Guest!
    If you appreciate British Car Forum and our 25 years of supporting British car enthusiasts with technical and anicdotal information, collected from our thousands of great members, please support us with a low-cost subscription. You can become a supporting member for less than the dues of most car clubs.
    There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Subscribers don't see this gawd-aweful banner
Tips
Tips

Am I missing a Crucial Bolt?

Share this page

bthompson

bthompson

Jedi Warrior
Offline
I noticed the other day, while adjusting my valves, that I have a Hole I hadn't spotted before.
IMAGE_01132.jpg

The Hole in question is in the rocker pedestal for valves #7&8. The shaft looks like it's threaded behind the hole, and currently a little offset. Is there supposed to be a set screw or hex plug or something there, perhaps to locate the shaft? I can't believe I've never noticed it before, but I searched pretty carefully and didn't see any loose screws laying around in the valve train.

This look familiar to any of you 1500 guys?
 
just checked, and yes, there is a set screw that goes there - Posi drive head, slightly wider than usual. I believe it is the screw that locks the rocker assembly in place. I can post a pic tomorrow if you want. The question of the night, is, where is it?
 
Is it small enough to fall through an oil return and be lying about in the sump?
 
surely is.
 
Bill, this is what you're after
 

Attachments

  • 16719.jpg
    16719.jpg
    65.2 KB · Views: 123
I found mine in the one of the galleys. That bolt is crucial to the longevity of your valve train. Without the rocker shaft will turn such that the oil passages do not line up correctly.
 
Aww, nuts. :cry: And just in time for prime drivin' season.

Well, I searched this morning and it definately isn't wedged beside a pushrod or caught in a spring...hopefully it just slipped peaceably down under, maybe a long time ago. Now when I pop off the oil pan to re-do my thrust washer<span style="color: #FF0000">*</span> I'll have something else to look for.

Anyone know the thread pitch and size of that screw? Maybe I can find an Allen plug that'll fit in the meantime.

(<span style="color: #FF0000">* </span>I'm intentionally making that sound easy and routine; actually going into the bottom end scares the willies outta me.)
 
Back
Top