.png)
Tweet
Boring Engine Blocks on a Bridgeport Mill
Here's something I knocked up a couple of years ago to allow me to bore engine blocks on the Bridgeport. Nothing more than a piece of EN32 plate fitted where the slotting head would normally sit which allowed me to mount the 777 Van Norman Boring bar. All the rest on the table is a couple of 8" indexing chucks holding a 2" EN32 ground bar with rings that I turned in the lathe to fit the front & rear main caps.
The job on the table was a Chevy 454 that I bored .027" over then finished to size with the hone for each individual piston. The set up works fine for the amount of blocks that I need to bore in a year and once again shows the versatility of the Bridgeport!
See: http://www.youtube.com/watch?v=rr4zy-x-ZJ4
I appologise in advance for the music, thought it was a good idea at the time?
Here's another pic of a Ford 460 being bored in preperation for oversized pistons & 4.3" stroker crank taking it out to to 521 cu.in or 8540cc. It was topped off with an 8-71 Supercharger & when it was finished it made 790hp & 770lbs/ft on the engine dyno. For a car that is taxed & MOT'd and runs on regular pump fuel it makes for an interesting drive?
Here's something I knocked up a couple of years ago to allow me to bore engine blocks on the Bridgeport. Nothing more than a piece of EN32 plate fitted where the slotting head would normally sit which allowed me to mount the 777 Van Norman Boring bar. All the rest on the table is a couple of 8" indexing chucks holding a 2" EN32 ground bar with rings that I turned in the lathe to fit the front & rear main caps.
The job on the table was a Chevy 454 that I bored .027" over then finished to size with the hone for each individual piston. The set up works fine for the amount of blocks that I need to bore in a year and once again shows the versatility of the Bridgeport!
See: http://www.youtube.com/watch?v=rr4zy-x-ZJ4
I appologise in advance for the music, thought it was a good idea at the time?
Here's another pic of a Ford 460 being bored in preperation for oversized pistons & 4.3" stroker crank taking it out to to 521 cu.in or 8540cc. It was topped off with an 8-71 Supercharger & when it was finished it made 790hp & 770lbs/ft on the engine dyno. For a car that is taxed & MOT'd and runs on regular pump fuel it makes for an interesting drive?
I bored a hole in the plate and turned down the pipe just enough to slip through then welded it on the back side. This isn't going to be operated at high speed anyway. Once again, I know better than that. 
Comment