Flanged liner options

[NixVegaGT]

Whoa. That's pretty cool. Sorta like a Nickel silicone coating on the aluminum. I bet it could be pretty thin too. Huh...

[BlownMGB-V8]

Yes, and if you apply the right coatings at the top and bottom it could be oven brazed (or soldered) into the aluminum block as well. Could do Art's cam journal plugs at the same time.

Jim

[roverman]

Jim, When you say "oven brazed", same as say "heli-brazing"? Requires an inert atmosphere? Minimum temp required ? What kind of tensile strength available? We're tryin to bypass tig., if possible. Thanks,roverman.

[BlownMGB-V8]

Correct Art, brazed (or soldered) in an inert gas oven. Very common industrial process. Used extensively in alloy radiator manufacture, anyone who has the equipment is well versed in the process.

Jim

[roverman]

This just-in..."The Green Acres Special", tractor pulled by lead dog-"Rover" ,has all the locals torked outta shape! Dimentionally speaking- it wasn't easy, fitting a 3.908" bore, a 4.100" od., a 4.242" flange dia.x.183" thick and a 6and15/16" height, kinda tuff ,on Rover, since he started life as a 3.5" pup. He be the Big dog now ! But wait, there's more ! roverman is makin a tap ! Forget the pooch. I'm gonna screw the sleeve, into the block. "That certainly takes care of the crack behind the sleeve problem"/lol.

[mgb260]

Art, That tractor sleeve sounds good! How are you gonna cut the length down? Probably on a lathe?Are you gonna leave a step on the bottom of the block?What sealer? Too many questions?

[roverman]

Jim, Yea, I know a machinist that works reel-cheep ,for himself. Don't know about step. At 4.1" dia, mostly, air down there! I figure first block to be, guinee pig/lemming? Maybe "boost-it" jus-to-see ? roverman

[roverman]

Clan, Just did the math. Looks like approx. 170 feet per sleeve, based on .031" dia wire and 32 tpi. I'm thinkin, better to thread sleeve with wire profile at say 16 tpi. This would, leave block/thread in block stronger.More area under flange. Provide more surface area for thermal transfer,(cooling). A meer 85' of wire per sleeve. Thoughts ?, why yes, roverman, you need to do math. You see, if you use 14awg. wire(.063"dia.) vs. .031", tensile will be over 4X at 935 lbs ! With 10 tpi., you'll only need 43' max per sleeve = $1.35 ? Stronger, cheeper and less work, born of  good math !   Gemini...the "other" head.

[mgb260]

Probably work good, in my case with Caddy wet liner, I found 58,000psi tensile 1/8" wall steel(bored to 4.099) to press tractor liners into. How much difference in expansion between steel and cast iron liners? I'm thinking pretty close,so only .001 interference shrink fit. 2 piece step liner. Chamfer steel liner and lower block for 4" Viton O ring.Use Hypalon sealer also. 4.25" O.D.. Same length as top thick part of stock liner with just tractor liner shrunk pressed(4.098) into lower block.

[roverman]

Jim, thermal expansion differential between non-stainless steel and cast iron should be quite low. "Loctite Sleeve Retainer" ? Block filler ? LS or Hemi pistons ? "Tractor Supply", like Alexander's should give a discount, for qty. of (.Caddy is designed for wet sleeve. Rover was designed for 3.5" dry. I feel compelled to," thread" to prevent dread. roverman.

[roverman]

Clan, I could use a "lead" on this one. I believe the best tool/attachment, for bore threading to be a "Geometric Internal Threading Head". Any brand really, as long as it will "repeat". Body dia. of approx. 3.9" max. This size will probably have 4-6 dies,(jaws). I will probably start with Acme thread at close to 10 tpi., and re-grind the profile ? With this type of head, jaws collapse inward when thread lengh/depth is reached. Anybody ? Thanks, roverman.