Engine knock 2: Heavy metal

Part 2 of the engine knock series. I pulled the motor apart to find the source of the mysterious knocking sound and found bits of metal everywhere.

Category:

Autos & Vehicles

Tags:

• VW
• Volkswagen
• air
• cooled
• beetle
• motor
• knock
• tear
• down
• Volkswagen Beetle
• Engine Knocking

[wiredkiwi]

It was number three conrod not number 2 - but who's counting?

[otahuhubus]

gloves ?????

[wiredkiwi]

@otahuhubus Yes had a wedding to go to afterwards and they don't keep everything out :)

[crvc56]

Before doghouse coolers the cooler sat in the cowling letting less cool air get to the #3 cylinder. That led to overheating and burned #3 conrod bearing. In the '70s I used to buy damaged engines cheap. The damage was always a burned #3 conrod bearing. The way to prevent it was to widen the valve lash in #3. Valves were adjusted to 0.04 in #1, #2 and #4 but was 0.06 in #3.

[magnethd]

I had a '69 bug that developed a knock similar to yours, shortly after that it developed a large hole in the top of the case accompanied by a severe oil leak. Pulled the plug wire and drove it 25 miles home, and that was all she had. :(