Some interesting videos on this site that show how the old liners are removed from an e type block and new top hat liners fitted
https://youtube.com/playlist?list=PLgKs ... NvrVHvnFO9
Ian
Machining videos
#1 Machining videos
1965 series 1 ots
1972 triumph spitfire
2016 Caddy van
1972 triumph spitfire
2016 Caddy van
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#2 Re: Machining videos
Hello Ian,
I used to refurbish ferry diesel engines and the tried and true method I used was to run three beads of weld roughly, evenly spaces the length of the cylinder liners from top to bottom. Once I was on to running the weld on the last cylinder, in most cases the first couple of liners had dropped out. For the remainder, I'd work on another part of the refurbishment, and the others would normally have fallen out. Those that hadn't, simply required a light tap using a stepped mandrel placed in the end of the bore.
The principle for this working is that the heat from laying down the weld wants to expand the cylinder liner. The metal of the liner in the weld area is heated to a Red Heat, whereby the metal in the weld zone is in a plastic state. Because there is nowhere for the cylinder liner to expand to, its restricted by the cylinder block, the metal in the plastic state compacts, and when it cools, the metal shrinks, and the diameter of the liner is considerably smaller, generally falling out. I remove Taper Roller bearing cups from blind bores, or when it's not practical to press them out, or when arranging a puller is difficult, in the same manner. They always just drop out after cooling post running a weld around the inner face of the cup.
Regards,
Bill
I used to refurbish ferry diesel engines and the tried and true method I used was to run three beads of weld roughly, evenly spaces the length of the cylinder liners from top to bottom. Once I was on to running the weld on the last cylinder, in most cases the first couple of liners had dropped out. For the remainder, I'd work on another part of the refurbishment, and the others would normally have fallen out. Those that hadn't, simply required a light tap using a stepped mandrel placed in the end of the bore.
The principle for this working is that the heat from laying down the weld wants to expand the cylinder liner. The metal of the liner in the weld area is heated to a Red Heat, whereby the metal in the weld zone is in a plastic state. Because there is nowhere for the cylinder liner to expand to, its restricted by the cylinder block, the metal in the plastic state compacts, and when it cools, the metal shrinks, and the diameter of the liner is considerably smaller, generally falling out. I remove Taper Roller bearing cups from blind bores, or when it's not practical to press them out, or when arranging a puller is difficult, in the same manner. They always just drop out after cooling post running a weld around the inner face of the cup.
Regards,
Bill
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#3 Re: Machining videos
Some really interesting machining shown in those videos, thanks for posting them Ian.
A good mixture of old-school and jeunesse, and pleasing to see the next generation lined up.
It's hard to understand what the actual calorific benefit of the two water-slots would be, given that they are of such limited periphery, and they appear to systematically crack, to boot.
A good mixture of old-school and jeunesse, and pleasing to see the next generation lined up.
It's hard to understand what the actual calorific benefit of the two water-slots would be, given that they are of such limited periphery, and they appear to systematically crack, to boot.
Rory
3.8 OTS S1 Opalescent Silver Grey - built May 28th 1962
3.8 OTS S1 Opalescent Silver Grey - built May 28th 1962
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#4 Re: Machining videos
Interesting solution with the bead of weld shrinking the liners,
If you are interested in manual machining as I am, being a model engineer, then there is a guy on YouTube called Joe pie that does some great videos
Ian
If you are interested in manual machining as I am, being a model engineer, then there is a guy on YouTube called Joe pie that does some great videos
Ian
1965 series 1 ots
1972 triumph spitfire
2016 Caddy van
1972 triumph spitfire
2016 Caddy van
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