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Camshaft Piston to Valve clearances
Gained about 0.005" P-V clearance by using the stock valve springs rather than the lightweight testing springs I was using to hold the valves. But damn it's hard to compress the stock springs. History proves correct, I should have learned.- TooManyToys
- Post #28
- Forum: 6.0 Tech
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possibly another head gasket!!?
While your pressure is high, did you ever do the hose in a bottle of water test to see if there are gases getting into the coolant and elevating the pressure?- TooManyToys
- Post #4
- Forum: 6.0 Tech
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Camshaft Piston to Valve clearances
I agree. I did the calc a few months ago for the ring on the top of the 6.0L piston, but never confirmed it. Volume Piston Top per 0.001" Thickness 0.007903069 ci Weight per 0.001" (g) 0.349542358 g 0.005" Removal 1.74771179 g I've done my 289HiPo's but they will spin.- TooManyToys
- Post #25
- Forum: 6.0 Tech
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Camshaft Piston to Valve clearances
When you remove material on the pistons do you do a rotating assembly re-balance? Over the last weeks, I still haven't gone back to the motor and rechecked P-V with stock springs.- TooManyToys
- Post #23
- Forum: 6.0 Tech
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Camshaft Piston to Valve clearances
That's interesting. I've added this to the other two I have and included the piston data. The standard deviation of the pistons matches the standard deviation of the protrusion of that motor. Not that it would always correlate as the crank throw and rods are also a factor to the protrusion...- TooManyToys
- Post #21
- Forum: 6.0 Tech
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Coolant Everywhere...How Bad Is This?
Considering during your backflush you also got the heater coolant flow valve to leak, just how much pressure did you use for backflushing? I'd also check around the water pump as you may have blown a seal there.- TooManyToys
- Post #3
- Forum: 6.0 Tech
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Camshaft Piston to Valve clearances
No real need to review them. Again, thanks for giving me the values you use on your engine builds. I'm going to go back to my motor and install standard rate springs to see if my checks come out close to Colts numbers. As I said earlier, years ago I tried the light springs and my numbers...- TooManyToys
- Post #18
- Forum: 6.0 Tech
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Camshaft Piston to Valve clearances
Last night before going to bed in my head was "this guy is going to ask how I'm checking PP", so I broke out a segment of one of my upcoming videos on this situation. https://youtu.be/HeMGtC2xano And if you want to see my interpretation on the disaster I'm dealing with and you've got 40...- TooManyToys
- Post #16
- Forum: 6.0 Tech
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Camshaft Piston to Valve clearances
And thanks for giving those values, that gives me direction.- TooManyToys
- Post #14
- Forum: 6.0 Tech
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Camshaft Piston to Valve clearances
Jack would be me. I talked to two crank grinders who weren't happy with it either but said it shouldn't be a major problem. I ran the truck with that crank for 70k and about 8 years. I can't put it together like that. I have no problem with doing somethings outside the norm, and maybe that...- TooManyToys
- Post #13
- Forum: 6.0 Tech
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Camshaft Piston to Valve clearances
Let's see if this works on this forum. First image The top table is data from an OE block, the bottom table from my Ford Reman motor. Second image I plotted both the piston protrusion and with those results got curious about the stroke of the crank. It looks like they mis-indexed the crank...- TooManyToys
- Post #11
- Forum: 6.0 Tech
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Camshaft Piston to Valve clearances
I probably should have added this graph earlier. It's a comparison of measurements of an OE piston protrusion and my Motorcraft reman block. The crank is going to be replaced with a stock crank, so it should be in the correct consistency. It's just amazing that someone could screw up crank...- TooManyToys
- Post #9
- Forum: 6.0 Tech
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Oil cooler replaced, high EOT, ECT 190
Because the coolant-oil differential is used as an indicator of restricted flow through the oil cooler and then to the EGR cooler, which is prone to crack on the '04.5 and up if it gets too hot. The differential is the only yardstick to know how restrictive the flow could be. The '03 EGR...- TooManyToys
- Post #15
- Forum: 6.0 Tech
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Camshaft Piston to Valve clearances
My piston protrusion and valve recession numbers are in the image I posted above. Valve stem heights I haven't checked yet, but they were 20mm service heads untouched.- TooManyToys
- Post #7
- Forum: 6.0 Tech
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Camshaft Piston to Valve clearances
Adjustable pushrod tightened to snug. That's how it's being done.- TooManyToys
- Post #5
- Forum: 6.0 Tech
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Camshaft Piston to Valve clearances
I've tied it three different ways so far, one being back calculated off the lifters. I just completed another with a head installed and FelPro gaskets (0.010" thicker than Motorcraft). I've got two numbers from Colt so far, 0.030" and 0.035" P to V needed. I'm not seeing that margin...- TooManyToys
- Post #3
- Forum: 6.0 Tech
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Camshaft Piston to Valve clearances
Have anyone measured the piston to valve clearance of a stage 2 cam in a stock motor and how much clearance did you have/allow intake and exhaust? Stock pistons. Piston protrusion? Valve recession?- TooManyToys
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- Replies: 32
- Forum: 6.0 Tech
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Oil cooler replaced, high EOT, ECT 190
No problem within the plates with ELC, but debris in the intake ports.- TooManyToys
- Post #11
- Forum: 6.0 Tech
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2003 f250 6.0 alternator wiring help!!!
And the cut and not connected wire is the cluster I circuit, which turns the alternator on. So the first thing I would do is check that it has no voltage key-off, but voltage key-on but not start or run. If it works fine, then that should be connected to the right, third pin looking at the...- TooManyToys
- Post #4
- Forum: 6.0 Tech
