Howdy! I'm planning on making hard lines for my canister oil filter rather than using the rubber hoses (on a 1954 235). What size/kind of tubing ought I be looking for? Thanks!
I like the copper/nickel lines, like the type that's used for brake and fuel lines. It's easier to bend than steel, and slightly more rigid than copper. Some people like to put a 360 degree "vibration loop" in both lines. Use 1/4" diameter tubing with either flare or compression fittings for a bypass filter, or 1/2" for a full flow. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
Here's a thread from about 10 years ago that describes what someone used for hard lines for a 235. Look for the replies from 'Bolter "Curt B." and I think that may give you what you need. Others will most likely chime in with ideas and solutions too.
(edit: Jerry beat me to the post button - lol!)
Last edited by Gdads51; 08/06/20242:49 PM. Reason: add edit note
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
There needs to be a restrictor somewhere in the line of about 1/8" or so. Most bypass filters have one built in. Some don't. I used 3/16" Cu/Ni brake line. Has worked well for 4000 miles. Oil pressure remains in 235 specs.
Since the flow is restricted to 1/8, then 3/16" is all that is necessary for a bypass system.
If I were to use rubber lines, I would go with the proper length of high pressure grease-gun hose. That would mimic the OEM hoses of the day.
~~ Jethro 1954 3100 Back to Life In the Dity Gallery 1951 3100 (gone) / 1956 4400 (still in the neighborhood) / 1957 6400 with dump body (retired) / 1959 3100 panel (in the woods junked) / 1978 Custom Deluxe K10 / 1993 S-10 4.3 / 2004 Chevy Crew Cab / 1945 John Deere H / 1952 John Deere B / 1966 John Deere 2510 / 1967 John Deere 1020
~~ Jethro 1954 3100 Back to Life In the Dity Gallery 1951 3100 (gone) / 1956 4400 (still in the neighborhood) / 1957 6400 with dump body (retired) / 1959 3100 panel (in the woods junked) / 1978 Custom Deluxe K10 / 1993 S-10 4.3 / 2004 Chevy Crew Cab / 1945 John Deere H / 1952 John Deere B / 1966 John Deere 2510 / 1967 John Deere 1020
When I'm adapting a spin-on filter setup to a bypass system, I thread one of the return line fittings for a Holley carburetor jet, and drill it out to 1/16". Unless that's done, the spin-on filter will dump almost all of the oil back into the pan and starve the engine with very low oil pressure. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
