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  1. SMOKEY44211

    dished vs. flat top piston.

    Most OEM Gasoline engines use a dished piston. I'm assuming that there is an advantage in reduced ignition advance timing requirements and/or reduced emmissions. I've asked a number of custom piston manufactures but no one seems to know. Any thoughts or information? -----Phil
  2. SMOKEY44211

    max compreesion water injection

    Trying to get some info. Normally aspirated 87 octane gasoline fueled engine 2 valve wedge chamber dedicted pure water injection. What is the upper limit mechanical compression ratio before detonation threshold. There's a lot been written for artificial aspirated aplications. Blair and Heywood...
  3. SMOKEY44211

    4cyl. crank damper

    All of the 4 cyl. engines I have run across operate without the use of a crank dampener. V-6 some do some don't. V-8's universally have one. I understand the dampeners function but fail to recognize why it appaerantly not needed on a 4cyl.
  4. SMOKEY44211

    Overdrive losses

    I'm curious as to why vehicle manufacturers have universally adopted overdrive transmission gearing for high gear driving. On all the chassis dyno tests that I've conducted I've always observed about 3% better power #'s at the drive wheels with 1:1 transmission gear selection.-------Phil
  5. SMOKEY44211

    brushless alternator.

    I have fabricated a brushless alternator using a 12volt stator and rectifier/regulator assembly scavenged from a 20HP air cooled gasoline engine. One stator is rated for 15 amps the other fo 30 amps. The magnets rotate around the perimetor of the stator. The stator has 18 poles and is wound for...
  6. SMOKEY44211

    check valve + low water sensing

    I am working on a project utilizing a small boiler (5 gallon capacity). Under certain conditions it may see 1,000 psi. pressure and temps. as high as 1,400 deg. F. I am trying to locate a one way check valve to go in a 3/8" pipe for the feed water and a suitable float electrical switch to...
  7. SMOKEY44211

    Gyroscopic coupling

    My shop services a large # of medium duty cab over comercial trucks. They all have Ibeam straight axels with leaf springs. Perplexing problem occurs on some of them (about 30%) at some point in thier service life if you hit a bump between 55-70 mph. the steering wheel goes into an uncontrolable...
  8. SMOKEY44211

    The Packard torsion ride system

    Having recently purchased a 56 Packard with torsion bar supension I have a question for those who may know the answer. (I'm very impressed with the knowledge with most of the contributors to this and other forums within this group). For those who may not be familier with it, there is a single...
  9. SMOKEY44211

    roller lifters and zinc

    Most modern engines seem to be using roller cam followers. My understanding is that the lube oil manufacturers blend zinc into thier additive package to lube the lifter to cam surface on engines using flat tappet followers. My question(s) are does anyone market an engine oil without this...
  10. SMOKEY44211

    running turbine directly to crank

    In doing some research I ran across some info relating to the use of a turbine(s) linked directly to the crankshaft. Application was the Wright Cyclone 3350TC radial aircraft engine. Three exhaust driven turbines were mechanically linked to the crank. Without this feature the engine was rated at...
  11. SMOKEY44211

    Optimizing rotor design

    I am currently working on a project utilizing 60-300psi steam to power a Terry type turbine that will operate in a 1,000-7,000 rpm range. (looks like a water wheel that powered the old water mills). Space limitations dictate overall diameter to 11" and blade width 2". Blades to be made...

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