Exhaust timing question for the gas motor guys.

Intlwaters

Help Support Intlwaters:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Last edited:
The last gizmo motor I had was acting the exact same way then it did this. Ended up being the upper rod bearing failing. I know you said the bearings where new and in good shape but figured I'd share in case it helps.
 

Attachments

  • Screenshot_20240804_153439_Photos.jpg
    Screenshot_20240804_153439_Photos.jpg
    553.1 KB
The last gizmo motor I had was acting the exact same way then it did this. Ended up being the upper rod bearing failing. I know you said the bearings where new and in good shape but figured I'd share in case it helps.
That is from porting the transfers too thin. Follow the crack you will see places the metal wasn't .005" thick and a crack starts there and works it's way around.

See many dozens blown apart caused by a worthless cnc program that is destroying the cylinders needlessly.

You do not have to cut any of that so thin for any reason to get flow through the transfers.
 
Here’s the same thing but this was a dunked engine
 

Attachments

  • IMG_0667.jpeg
    IMG_0667.jpeg
    1.3 MB
  • IMG_0666.jpeg
    IMG_0666.jpeg
    1.3 MB
Back
Top