Powerstroke rocker arms - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 14 (permalink) Old 07-13-2014, 05:05 PM Thread Starter
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Powerstroke rocker arms



I see no 'performance' Ford/IH diesel sub-forum here so I will just post this here. The rocker arms in the picture are from a 6.0L, but the thread can be dedicated to any Powerstroke displacement concerning the rocker arm and building this portion of the valve train for more severe duty applications. This weekend I had the time to sit down and actually look at these ones and measure.

These are rough measurements, not exact but it gives you an idea of them.
Top rocker arm from Pushrod cup to pivot = 1-27/32" + or -

Tip/nose to pivot = 2-17/32 + or -

Should be noted the tip or bridge contact point of the rocker is removable, moves as needed for operation too. I will display the rocker scrub on the valve bridge too to show the movement the rocker itself does during engine running time. These rockers just so happen to be 3/16" thick material.

The bottom rocker
Pushrod cup to pivot = 1-5/16" + or -
Tip/nose to pivot = 1-27/32" + or -

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post #2 of 14 (permalink) Old 07-13-2014, 07:57 PM
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Would be nice if someone made an inexpensive roller for these.
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post #3 of 14 (permalink) Old 07-14-2014, 05:19 AM
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Quote:
Originally Posted by lenzhotrod View Post
Would be nice if someone made an inexpensive roller for these.
yeah, I know. Don't have 2K to spend on Harland Sharps right now.

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post #4 of 14 (permalink) Old 07-14-2014, 01:37 PM
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Return on investment is not great for 6.0 roller rockers. I waste(spend) money on performance parts, just cannot justify rollers.
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post #5 of 14 (permalink) Old 07-15-2014, 12:07 AM Thread Starter
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Well guys, get the lathe and mill rollin. if you know here to get your material from and can follow a conditioning process to make them last a test run, why not? if I didn't have a Cat scroll pump, Bosch P pump and Dmax heads to work on for my own knowledge I would definitely give it a shot!

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post #6 of 14 (permalink) Old 07-15-2014, 12:24 AM Thread Starter
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I looked at those Sharp rockers, I would say yes we need to develop a more cost effective set.

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post #7 of 14 (permalink) Old 07-16-2014, 03:06 AM
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I only have a small lathe and really don't know how to use it. We will give you some time on your other projects but get moving.
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post #8 of 14 (permalink) Old 07-16-2014, 11:18 AM Thread Starter
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Haha, that is funny 'get moving'. Grab a basic machining book and start trying different thingsLenz! I will have to figure where I can get some machine time and material. Probably end up speaking to my buddy back home in MN on some things.

IMO, the attributes seen in Sharp's picture I see maybe a 'half'-roller rocker. I think the trick will be the valve bridge to roller tip companionship. Any other views on what is being looked for in the rocker arm assembly?

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post #9 of 14 (permalink) Old 07-17-2014, 08:28 PM
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So your thought is that a rocker arm that uses ball bearing friction suppression at the three main contact points is insufficient and that a roller bearing design will make a significant improvement in friction losses? Curious. Strength wise, the arc-beam design is strong enough, and rather light weight for a steel rocker arm. Perhaps a roller tip would benefit, but with the bridge being 45 to the arm, you have to look at how much area you even have for a roller, the bridge would likely need be slightly wider to keep the roller on it.

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post #10 of 14 (permalink) Old 07-18-2014, 12:43 AM Thread Starter
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Show me a picture the displays ALL 3 roller. He website only shows the roller aspect visually on the pivot point.

Jim "Iron Giant" Fahlin ~ A high performance car is like a guitar, you have to tune it to achieve your best operation and pull ahead of the competition.

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