Paul_G
Well-Known Member
- Local time
- 10:32 PM
- Joined
- Dec 24, 2013
- Messages
- 2,147
- Reaction score
- 3,533
- Location
- Surprise, Arizona
My new 505 suffered an extreme over heating issue with 100 miles on the build. A core plug came out at triple digit speeds. I did not know it till the engine was smoking. Blew a head gasket, burnt a groove between 3 and 5 cylinders in the TF PP240 head. The story is here. https://www.forbbodiesonly.com/moparforum/threads/so-this-is-bad.201491/
The machine shop that prepped the block and installed the stroker kit took the engine back in, repaired the burnt head, inspected the engine and gave it back telling me it is good to re-assemble and run.
I was skeptical about running it till I took a look for myself that everything was good. A good friend also advised to pull the heads and pistons and check it out for myself. This is what I found.
Cylinder walls?
Rod bearings?
Piston #3, above the top ring of the piston has grooves looking similar to a fine thread. This side of this piston is where the groove was burned in the head, it is very rough in that area. Also grooves in that black area down on the skirt. Is that piston trash now? Other pistons, like the last one in the pics, are a little rough in the grooved area as well, just not nearly as bad as piston #3.
Cylinders 3 and 5 below
Cylinder 3 below
The right bank of the engine next 3 pictures
View attachment 1117688View attachment 1117689
The machine shop that prepped the block and installed the stroker kit took the engine back in, repaired the burnt head, inspected the engine and gave it back telling me it is good to re-assemble and run.
I was skeptical about running it till I took a look for myself that everything was good. A good friend also advised to pull the heads and pistons and check it out for myself. This is what I found.
Cylinder walls?
Rod bearings?
Piston #3, above the top ring of the piston has grooves looking similar to a fine thread. This side of this piston is where the groove was burned in the head, it is very rough in that area. Also grooves in that black area down on the skirt. Is that piston trash now? Other pistons, like the last one in the pics, are a little rough in the grooved area as well, just not nearly as bad as piston #3.
Cylinders 3 and 5 below
Cylinder 3 below
The right bank of the engine next 3 pictures
View attachment 1117688View attachment 1117689
Last edited: