I’m sure Chuck meant that the rocker baffles direct oil away from the guides.

Lorena, Texas (South of Waco)

Huh????

"The Master Cylinder"

Enjoying life at the beach in SOCAL

They direct the excess oil flow from the rockers to the valve stem. Chuck

Y's guys rule!
Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.

MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi)
Manchester, New Hampshire

Jeff, here is my novice answer. They are roughly triangular shaped plates (called oil baffle plates in the shop manual) that mount under the rocker shaft support brackets and they direct oil, either away from or on to (I can't remember which) specific areas.

Mark

1956 Mercury M100
1955 Ford Fairlane Club Sedan
Delta, British Columbia

I have a novice question, what are the "drip pans" that have been referenced in previous posts?



Thanks

Jeff

Jeff Petersen

Well, adding the oil drip pans under the rocker stands made a huge difference. All adjusters are sitting about mid way in the rocker arm. I read the additional information Ted posted after my last post and will go back and double check everything and take a closer look at the positioning of the rocker tips. I should ad that these were John Mummerts valves (1.940 on the intake and 1.600 on the exhaust with stock length stems), but when I think back on the machining of the heads, the machinist told me that the valve face was not set flush with the rim of the new hardened seats. They were just a bit (a few thousands) above it. He did do a 3 angle valve job on the valves and seats and I had no reason to question why they were not flush with the seats. Hopefully everything will be good as that machine shop was in Montana and I now live in Maine!

Rono

  Ron Lane,  Meridian, ID

Be aware, if trying to dial in the geometry precisely, those drip pans vary in thickness (different manufacturer sources/lots?).

6 VOLTS/POS. GRD. NW INDIANA

Add this to all the other suggestions.

Stock length valves or scrub or other retrofits?  Longer or shorter than stock valves will play havoc with the rocker arm adjuster locations if trying to use standard length pushrods.  Also upsets the rocker arm geometry.  For valve adjustments, are you starting on #1 compression or #1 overlap?  While stating the obvious and may not necessarily apply in this instance, this makes a big difference when trying to adjust the valves.  Each piston needs to be at TDC at the tail end the compression stroke for setting the valve lash for that particular cylinder.  And be sure you're referencing the Ford #1 cylinder location and not that of another marque.  Here’s the link to a past thread on setting the valves.  As with most operations, there are several different ways to perform this and still get satisfactory results.

http://forums.y-blocksforever.com/Topic8614.aspx 

Here are a couple of links explaining more about the geometry and the effect pushrod length has on valve lifts.

Rocker arm geometry

Pushrod length and its effect on the rocker ratio

Lorena, Texas (South of Waco)

Thanks guys. I'll try the oil drip pans. The rockers are stock 1.54:1 ratio, but I will still use a dial indicator after all is said and done to see what the actual numbers say. I think the guides should be okay, but that is a scary thought about the keepers being forced out

Rono

  Ron Lane,  Meridian, ID

If you can adjust them, and the cup has adequate clearance between the rocker arm throughout the entire range of motion, then it really is not a problem.

Having the adjusters are far out as possible is beneficial because it gives you a larger ratio which means a little more lift and, I think, duration at the valve. This aspect could pose a problem since you are already so close to the limit.

The oil drip pans will give you extra room for adjustment but will alter the geometry which will affect the lift which may or may not put you beyond the .500 limit.

You can always put a dial indicator on a couple of the valves to verify the lift you are getting.



Another thing to be careful with is the rocker ratio used by a cam manufacturer to determine the actual lift. Often, it is 1.5:1. If you're using 1.54 or aftermarket 1.6 rockers, then you may already be over the .500 limit, particularly with the adjusters out and the increased ratio.



Further, the valve guides should have been machined for the increased lift. Were they? Make sure the retainer will not hit the guide.


Lawrenceville, GA