Cummins 12v roller rockers
 

12v rocker bodies just out of the machine. Sub-plates, stands, and shafts are finished. Billet valve covers are next, and then we are ready to rock.

Looks awesome I'm going to be in need of a set this season.

Me too can't wait to see the finished product

What ratio will they be?

Very nice.

Ratios are 1.7, 1.75 and 1.8

What's the price going to be on these?

$3500 is the introductory price for the whole kit.

We can do custom ratios too. Two week lead time on custom ratios right now.

These are a complete kit, which includes the sub-plate, new rocker stand, new coated rocker shaft ( coating is a combination a hardness coating to make the surface harder more wear resistant, and lubricant coating), and billet (made from a solid chunk of aluminum, not fabricated) 1 piece valve cover. The rocker stand is bolted down with 7 bolts, the shaft bolts to the stand with a bolt between each rocker. The shaft and stand have some very tight tolerances were they lock together like a Lego. It is very rigid compared to stock. The valve cover also has spray oiling for the roller tip and valve springs.

We improved the rocker geometry to reduce the movement of the rocker arm across the tip of the valve. We built the geometry around the stock valve, and slightly taller to accommodate the Hamilton head and large valves. If by chance you would have a taller valve, we can adjust the sub-plate and installed rocker centerline for you.

So why did we not just make a rocker to fit the stock stands. My experience has been this. When the shaft is unsupported on each side of the rockers the shaft will flex. More than you think. I have seen shafts flex, just by rolling over the motor, and checking lash, by as much as .025. That's a lot, like a mile. So what does that do. Well now the cam is not doing what it is supposed to do. You just lost part of your lift. You changed the duration, and timing of the cam. That can mean a reduction in hp and torque. It also introduces frequencies and vibration into your valve train that you do not want. These frequencies have impacts on the durability of the camshaft, pushrod, rocker arm, lifter, and valve springs. The impact is usually not beneficial. Usually there will be a reduction of durability in the components. In short that is the reason we chose to make a complete kit.

Eric showed me this when I stopped in awhile back. The parts almost do snap together like Legos. Very nice solid design for sure. Cant wait to get his junk on my truck.

Very cool! Would love to see it all in action.


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Awesome! I'm guessing with the one piece valve cover stock lines will not fit?

Mr.Staab-I'm down to see a couple of pics of the whole shebang.....

X2!!! I wanna see this setup!

I will put some more pictures up once we finish the valve cover. It is very much like the SMT kit that is out there. We made improvements in the areas we thought needed it, and committed to stocking 3 different ratios.

What kind power increase are you seeing from these

Zero. Essentially you could see some gains just from the fact they are roller with less friction, and inertia is less because the rocker arms are lighter, but I'm not going to guarantee any hp gains. It really comes down to your combination. The combination of the head, cam, and turbo, plus the right rocker ratio to achieve the lift needed. So you may see absolutely zero hp gain, and you might see a lot of hp gain.

Billet Valve Cover for rocker kit
 

Sneek Peek of billet valve cover for rocker arms kits.

https://www.facebook.com/photo.php?f...type=1&theater

Picture attached. More pics on our facebook page.

Looks good Eric