Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by RETHomer

  1. RETHomer

    Definition of OEM "hand-built" engine?

    Is it the "one man, one engine" philosophy of AMG? Or can it involve an assembly line/stations where the technicians hand-check all the tolerances, position the piston-ring gaps, etc? How much automation should be allowed in a hand-built engine, e.g., simultaneous torquing of mains or heads...
  2. RETHomer

    Torque split math

    I sometimes have problems with the term "torque split" when discussing a 4WD driveline. Consider this theoretical scenario on a very simple 4WD vehicle, discounting losses due to friction, etc. In fact, think of a the transfer case as a simple drop case where the driven gear is mated to both...
  3. RETHomer

    Top Fuel Dragster

    >>"Fuel pressures are in excess of 300psi, so the physics of having the front cylinders leaner than the rear cylinders sounds like a bunch of hooey."<< >300 psi *TO* the injectors doesn't mean anything to the fuel/air mass blasting thru the blower and into the ports. F/R fuel distribution WAS...
  4. RETHomer

    Diesel Fuel Quality Debate

    I believe powertrain engineers have done their job in significantly improving diesel engines for American vehicles, but it's my understanding US-based refineries have done little to help them. Sulfur content is too high and the cetane value is too low. Regulations will address the sulfur problem...
  5. RETHomer

    Different bore/stroke within same engine

    Thank you all for the interesting insight. I looked at the link mentioned by incandescent, then called a friend who builds Pro Stock engines. He said he has heard of this theory but never tried it nor has he talked with anyone who has tried it. He said the theory is to build a V4 with strong...
  6. RETHomer

    Different bore/stroke within same engine

    Can anyone determine the advantage of running two different bore/stroke combinations within the same engine? I just read a V8 racing engine buildup in which the author said he will use two groups of 4 cyl. displacements that will be within 0.01 ci of each other. Didn't say how cylinders would...

Part and Inventory Search