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Recent content by Pablo_C2R

  1. Pablo_C2R

    Transient conrod analysis

    Thanks for your help karachun, that's a practical approach. I reduced the impact of the oscillations reducing the acceleration ramp, checking the natural frequencies in a modal analysis and improving the joints.
  2. Pablo_C2R

    Transient conrod analysis

    Hi, I am trying to perform a transient analysis of a crankshaft, conrod and piston in order to understand the effects of the reciprocating mass in the conrod performance (with lightening purposes). The project is set up with a 200 steps of 0.0002 sec and a configuration of 0.00005 sub steps...
  3. Pablo_C2R

    Billet pistons shape optimization

    At last, they took the engine a part, as i told you before, the scratches are only present in the admission side of the piston. As for the ring land clearance the cylinder is bored to 82.73 mm
  4. Pablo_C2R

    Billet pistons shape optimization

    Ok guys, here is an update, the owner is the engine builder and is one of the largest and more successful racing team in colombia (Renault backed factory team). so i don´t think they didn't check the cylinder finish before the assembly. They have removed the cylinder head (image attached) and is...
  5. Pablo_C2R

    4340 rectangular bar supplier

    Thanks for your help, it looks like Fry Steel has it, i just send the quote request, as for ryerson, i didn't found 4340 flat bar (round bar is available),they only have 4140 flat bars.
  6. Pablo_C2R

    4340 rectangular bar supplier

    Guys remember that we are in Colombia , not the states, we have a PO box and we can source the material from Texas but unfortunately i don't know the name of any supplier there. I have contacted carrillo, wiseco, omega, venolia, saenz... and the reply is always the same "We do not sell blank...
  7. Pablo_C2R

    4340 rectangular bar supplier

    Thank you guys, Ed could you be more specific, we are from Colombia and we don't not which are the large distributors. As for metalsupermarket, they only seem to sell 4130 and 4140.
  8. Pablo_C2R

    Billet pistons shape optimization

    Yes is the full length of the bore. regarding the finished surface of the cylinders... those are properly honed and rectified within +/-0.005mm. the image was taken with an old optic boroscope. That might be the reason you are confused with the image.
  9. Pablo_C2R

    4340 rectangular bar supplier

    We are developing custom high performance billet conrods for racing engines in Colombia. Our first prototype was developed for a sr16 Nissan engine and is working up to 9000 RPM. The material used in this development was bholer v155, and for future development we want to look for a better suited...
  10. Pablo_C2R

    Billet pistons shape optimization

    Hi my name is Pablo Gaviria and I work with Mauricio at C2R. As he told you before, the engine builder didn't want to open the engine for inspection...(it is working well when operation temperature is achived). The engine is a Renault f4r we assume the cilinder material is cast iron (we don't...
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