Thread: Ragged Edge Pro-Street 406

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Ever think about re-phasing the cam closer to 0 overlap?

Directing the internal combustion to redirect the downward power stroke to the center of the cyl.? Shaping the explosion with a dished piston to maximize the downforce? Rephasing the cam to fire closer to 0 overlap changes the line of crank position from 90* to just past 90 to create momentum, and decrease the chance of breaking cranks under high load axceleration....

I been kicking it around in my head for a couple years, something to think about over morning coffee. Everytime I get it close to what I want it reaches hydralock so I keep just milling it around in my head....I'll get it sooner or later.

Let me know how yours comes out.

Originally posted by hambiskit
Ever think about re-phasing the cam closer to 0 overlap?

Directing the internal combustion to redirect the downward power stroke to the center of the cyl.? Shaping the explosion with a dished piston to maximize the downforce? Rephasing the cam to fire closer to 0 overlap changes the line of crank position from 90* to just past 90 to create momentum, and decrease the chance of breaking cranks under high load axceleration....

I been kicking it around in my head for a couple years, something to think about over morning coffee. Everytime I get it close to what I want it reaches hydralock so I keep just milling it around in my head....I'll get it sooner or later.

Let me know how yours comes out.

Hey,this is a street car/truck.When was the last time you even heard of someone breaking a 4340 crank in a 2,800 lbs street driven car/truck.If you are that worried about crank-breakage maybe you should think about running some aluminum rods.Nice thought but don't let it scare you that much.Try running lap after lap with a 14.5 comp. ratio at 7,800 r.p.m.'s.

Just something I kick around in my head Erik- it's not so much the breaking the crank as the trying to get the thing to fire past 90* to enhance the momentum. Hell- I'm sure that it has already been done- I want to figger it out myself, and I do run 14:8.1 lap after lap buddy. If I can get it to work by changing the angles to create more momentum in a street motor I can apply it across the board to the BB's and have one really nasty beast that will run on pump gas.
Besides- it's a street motor only when you put it into a street machine.

Add a little expanding steam from water injection to add pressure past 90 degrees.

thought about that- but then you run a risk of high rpm pre-det. don't you?

Originally posted by hambiskit
thought about that- but then you run a risk of high rpm pre-det. don't you?

Don't think so.

Water injection is an anti-detonation device.

The water molecules take up room in the chamber, improving quench, and also cools hot spots in the chamber - therefore reducing potential detonation and allowing for increased cylinder pressure.

Probably would be difficult to actually get enough water in there to do what you want without detrimental combustion effects.

I was just thinking that the only reciprocating engine I know of that maintains pressure or possibly even increases pressure on the piston during its' power stroke is a steam engine. Its' other advantage is that every piston down stroke is a power stroke. In fact, every up-stroke is also a power stroke as they injected steam on the backside as well.

What you really need to come up with is an efficient way to heat and carry enough water - maybe something like a Mr. Fusion with a Flux Evaporator that can condense enough water from outside air.

Hmmmm, a diesel comes to mind hambiskit.

well...it's a 327 geometric line, with a Hemi firing design, and I'm trying to apply it to a stroker. I'll get it sooner or later.

Or just get a Hemi.....lol

ooops, forgot chevy forum- but it would be a sweet running stroker, wouldn't it. It kinda does sound like a diesel - don't it.