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Engine Specific Info and Questions => IDI Engine => Topic started by: 91turboeco on February 22, 2006, 12:49:46 pm

Title: piston to wall gap
Post by: 91turboeco on February 22, 2006, 12:49:46 pm

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

Title: Re: piston to wall gap
Post by: chrissev on February 22, 2006, 04:14:02 pm

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?

Title: piston to wall gap
Post by: 91turboeco on February 22, 2006, 05:48:21 pm

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

Title: piston to wall gap
Post by: tylernt on February 22, 2006, 06:25:35 pm

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.

Title: piston to wall gap
Post by: jtanguay on February 22, 2006, 06:47:45 pm

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  :)