Roller rockers


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By Hollow Head - 18 Years Ago
http://www.rockerarms.com/

http://www.rockerarms.com/F11%20Roller%20RA.jpg

http://www.rockerarms.com/ford.htm


FORD "Y" BLOCK

Available in Exact 1.5, 1.55, 1.6 Ratios

The roller and adjusters screws is machined offset to allow proper alignment over the valve and push rod

2024 Billet Aluminum

660 Bronze Bushing

Hard Chrome shaft

Aluminum Shaft Spacers


Anybody familiar with those rockers and that company? Cool
By pcmenten - 18 Years Ago
No, I have no experience, but I was impressed by their shaft system for the FE. I notice that the Y-block parts are roller-tip, not roller fulcrum. Still, roller tip is better than the original design.



I'd love to see a cast titanium rocker with roller tip and roller fulcrum. Make a gun-drilled solid shaft for them with a pressure relief bleed system for the oiling of the timing chain. Of course, I could not afford it but I'd love to see it.
By Ted - 18 Years Ago
Haven’t used anything from that particular company but their products have been highly spoken of.  I did notice that their picture showed a rocker with a bronze type of bushing.   I had repeated rocker arm breakage with the Harland Sharp rockers that used a similar bronze bushing setup with the stock diameter shaft on an Fe and surmised that the strength of the rocker around the shaft was compromised by adding the bushing.  I switched to a rocker that was not bushed and was instead aluminum throughout and eliminated the problem.  If valve spring pressures are not extreme, then there would obviously be less issue with the bushing weakening the rocker arm.  The pricing appears to be very reasonable though and especially if that includes the shafts and stands.
By 63 Red Stake Bed - 18 Years Ago
bought these in 1.6 in 2007.  I love the rocker arm assembly's!  They are so much more accurate than even rebuilt stock rockers as far as adjustment.  I adjusted them once, & never had to touch them again.  With the stock assy's I found that I'd "hear" the valve clearance randomly more often.  With these I only hear a difference when it is under 30 degrees F. 

I noticed a nice mid range & slight top end gain.

I would have liked them better with needle bearings or such, but for the street use & 300lb isky springs that come with the E-4, I couldn't pass them up to get a .048 lift increase.

By 63 Red Stake Bed - 18 Years Ago
-I meant I bought & put them on in 2006.  I wasn't in a hurry which was good since they started making my particular pair when I ordered them..  Took a few months.  Keep your stockers to get you by & then you'll be covered. 

Definetly worth the wait since they are great pieces.

Bye the way, I often run these to 5000, have had an occasional "woops" of 5500-5700.

By Ted - 18 Years Ago
63 Red Stake Bed (12/17/2007)
I would have liked them better with needle bearings or such......

Needle bearings in the rocker arms have typically been an issue with the stock diameter shafts for the same reasons that bushings have been a problem and that is the strength of the rocker arm itself is compromised with the insertion of the bushing or bearing.  The cage for the bearing is typically larger in diameter than a bushing which explains to a large degree why rockers will be bushed in lieu of having a bearing.  Erson got around this on their Fe roller rocker arm setup by tooling up their own smaller diameter shafts so they could use a caged bearing in the rocker.  Here’s a previously posted picture which shows the Dove Manufacturing rockers being used on a Y which are similar in outward appearance as those supplied by Rocker Arm Specialists.
By pcmenten - 18 Years Ago
Jeepers, that's beautiful, Ted.