t8fanning
8v are still cool, right?
- Joined
- Oct 10, 2010
- Location
- Vancouver, WA
I did another compression test when the engine was hot. Same numbers, so I pulled the head and finally got some good news. Pistons look great. What I thought was pitting was just carbon buildup.
Cylinder one piston moves significantly in the bore relative to the other pistons, which explains the lower compression in cyl 1. Based on this I'm pretty sure new rings would fix my blowby and low compression.
Here's cylinder 1:
https://youtu.be/VyCsI97eEuw
<iframe width="560" height="315" src="https://www.youtube.com/embed/VyCsI97eEuw" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>
Here's cylinder 4:
https://youtu.be/ERzqbJQ8jhE
<iframe width="560" height="315" src="https://www.youtube.com/embed/ERzqbJQ8jhE" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>
Cylinder one piston moves significantly in the bore relative to the other pistons, which explains the lower compression in cyl 1. Based on this I'm pretty sure new rings would fix my blowby and low compression.
Here's cylinder 1:
https://youtu.be/VyCsI97eEuw
<iframe width="560" height="315" src="https://www.youtube.com/embed/VyCsI97eEuw" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>
Here's cylinder 4:
https://youtu.be/ERzqbJQ8jhE
<iframe width="560" height="315" src="https://www.youtube.com/embed/ERzqbJQ8jhE" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>