piston to wall gap - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• piston to wall gap by 91turboeco on 22 Feb, 2006 12:49
• as i was cleaning the top of my block off for the new headgasket when i was fin. i noticed that there is a pretty ''big'' gap on the one side of the piston but not the other
  
  it this normal
• #1 by chrissev on 22 Feb, 2006 16:14
• Quote from: "91turboeco"

  as i was cleaning the top of my block off for the new headgasket when i was fin. i noticed that there is a pretty ''big'' gap on the one side of the piston but not the other
  
  it this normal

  
  
  cylinders may be oval.  How many kms on the engine?
• #2 by 91turboeco on 22 Feb, 2006 17:48
• pistons can oval :?:  never heard of it
  
  she pushing 334,000 mile dont know what that is in kms
  
  guessing its original and not rebuilt
• #3 by tylernt on 22 Feb, 2006 18:25
• At 300K miles +, the bore could certainly have worn oval. How is oil consumption? If you're not burning a lot of oil then it's probably ok.
• #4 by jtanguay on 22 Feb, 2006 18:47
• over time it would become somewhat oval due to the design of the combustion engine and the way the con rods and crankshaft apply force to the piston. the force applied creates friction from front and rear sides of the piston wall in relation to the engine, but not side to side.  the only fix for this is a bore.
  
   if compression is ok then who cares though