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  #16 (permalink)  
Old 09-21-2010, 09:59 PM
ericnova72's Avatar
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What's it in?? Whats it weigh?? What's the tire diameter?? I'm guessing big tire based off that cruise rpm statement, and heavy vehicle.
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Old 09-24-2010, 12:07 PM
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Originally Posted by fittyfod
Ok Reading the paperwork for the fuel pump- Preset at 7psi. I put in a regulator
Intake is a Weiand Action Plus 8124- "for engine speeds of 5500

Am I just at the top of this thing or can I squeeze more power out of it. It aint doing it for me...

UPDATE**UPDATE**UPDATE

So I think I have this solved. turns out the Machinist used my stock springs there were only measuring 40#'s Seat Pressure!
My god, I want to badmouth the machinist...Why would anyone in their right mind figure stock springs would be ok to use on anything other than a stock cam?
So the valve float issue is confirmed. I am halfway through installing new springs and retainers now. Once this is done I am going to measure the pushrods. something that also was not done...

I am going to stick with the Hydraulic /non adjustable valvetrain for now. that conversion is going to cost 4-500 so If I dont need it with this cam, I will just move on.
It may be worth it if I can squeeze more out of the engine.

what do you think?
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  #18 (permalink)  
Old 09-24-2010, 03:22 PM
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Quote:
Originally Posted by fittyfod
what do you think?
1. Again, the machinist has saved your bacon by allowing the camshaft to be broken in on light springs and you don't realize it. Had he installed Godzilla springs at the git-go, you would be posting about the cam going flat. Change out the springs and thank your lucky stars that you had someone looking out for you.
2. Choose whatever oil additive you want, but use SOMEBODY'S ZDDP. More spring will mean more pressure at the lifter/lobe interface and without protection from an extreme pressure lubricant in the oil, you won't like the results.
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Old 09-24-2010, 09:48 PM
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Originally Posted by techinspector1
1. Again, the machinist has saved your bacon by allowing the camshaft to be broken in on light springs and you don't realize it. Had he installed Godzilla springs at the git-go, you would be posting about the cam going flat. Change out the springs and thank your lucky stars that you had someone looking out for you.
2. Choose whatever oil additive you want, but use SOMEBODY'S ZDDP. More spring will mean more pressure at the lifter/lobe interface and without protection from an extreme pressure lubricant in the oil, you won't like the results.
Yea, Im not sold on that theory. While I can appreciate the logic of the cam breaking in with lighter springs when is that a widely used process for break in?
The springs he allowed to go back in the engine were not checked for their spring rate. Seeing as though he spec'd the cam he would also know about proper springs to use. What also kills me is the fact that the push rods are about 1/4" too long. Leaving the valves hanging open...

This explains my 125PSI compression. I loosened the rockers to let the valves close and now I have 150+...
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  #20 (permalink)  
Old 09-25-2010, 08:49 AM
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Originally Posted by ericnova72
What's it in?? Whats it weigh?? What's the tire diameter?? I'm guessing big tire based off that cruise rpm statement, and heavy vehicle.
Truck weighs 3640 pounds
Tire Diameter is 26"
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