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Thread: 1988 6.2 oil lines

  1. #1

    Default 1988 6.2 oil lines

    Hi just wondering I've seen a few posts on folks fixing thier own oil cooler lines by using clamps and cutting the aluminum crimps off.....not sure exactly what these folks are doing.....are the crimps cut right off then you flare the ends of the cooler line side aluminum hoses? Then using clamps on the existing hoses? the crimps are exactly what is leaking on mine. Now thats alot of oil pressure in those hoses.... dont want to be on the highway and boom , any help is appreciated. thanks

  2. #2
    Join Date
    Sep 2006
    Posts
    150

    Default

    Personally, I would never trust clamps on a oil line. Best move would be take them off and to a place to have them rebuilt. Many NAPA's will do it, and virtually any hydrualic place will. Check your local phone book, unless you are in a little town (even we have one) you can probably find several places to rebuild them. Good luck!

  3. #3
    Join Date
    Sep 2006
    Posts
    27

    Default

    Oil lines and clamps are bad news.
    Seems the hose gets soft then pops off at the most inopertune moment.
    Cut double flair a nut on then hook to a hose barb atleast.

  4. #4
    Join Date
    Sep 2001
    Location
    Lubbock TX, USA
    Posts
    4,194

    Default

    IIRC, there was an article on here about that.

    Don't just use regular hose clamps, they ain't got the strength in the long-run to call them reliable in this application.

    I saw mention of using small exhaust clamps (U-bolt type) to clamp on with the hose clamp. That probably wouldn't slip off.

    Best best, go to the dealer and buy another set...

    Or, upgrade the lines and cooler from Lubrication Specialists, or the larger DSG cooler and lines (more money, more better lines and cooler).

    J
    1982 C10 SCSWB 6.5TD, mods too extensive to list. (13.69 1/4 mile @94.6 MPH) RACE TRUCK
    1982 C10 SCSWB 6.2NA, 2.73 700
    1986 C10 SCLWB 6.2TD 3.73 700
    1989 V20 SUB 6.2NA, 3.73 400
    1994 G20 VAN 6.5NA, 3.42 60E
    1994 K20LD ECSWB 6.5TD, 3.42 80E
    1995 K20 SUB 6.5TD, Wrecked, ran into by stupid teen.
    1995 C3500HD DRW 6.5TD, 12' Flatbed 5.13 80E
    1995 C3500HD DRW 6.5TD, 18' Rollback Wrecker 4.63 80E
    1994 C20HD ECLWB 6.5TD 3.73 80E Wifes Truck.
    1995 C20LD ECSWB 6.5TD 3.73 80E
    1995 K20LD SCLWB 6.5TD 3.73 80E
    1996 K30 DRW 6.5TD 4.10 80E
    1997 C10 Tahoe 2Door 2WD 5.7L to 6.5 Conversion Underway

  5. #5
    Join Date
    Mar 2000
    Location
    AB Canada
    Posts
    218

    Angry

    I had a engine grenaded by one of these factory oil line couplerclips breaking and popping the line out of the block , I replaced both lines with stainless tubing and hydraulic hose and fittings ,and replaced the quik connectors with screw in fittings as well.
    I advise everyone to inspect these quik couplers carefully for tightness when changing the oil filter as these little hairpin clips can and do fail . It did cost me $2500 in rebuilding an exelent running engine.

    My two cents worth

  6. #6
    Join Date
    Sep 2001
    Location
    Concord, NC, USA
    Posts
    955

    Default

    Jim B did a complete how-to article with nice pictures a few years ago on how to do this by rotary tooling off the aluminum, crimped pieces and using clamps. I did this on my Blazer using 2 high quality clamps on each end and have had no more leaks. I check them every 6 months or so for tightness.
    Mark Chapman DP member #653;
    1983 K2500 6.2 Suburban, 4" lift, 35" tires, ATS turbo, Banks exhaust/intake, pyrometer, tachometer;
    1986 K5 6.2 Blazer, 2" lift, 33" tires, Banks intake, pyrometer, tachometer
    1963 wife, one owner, average mileage for the age but in excellent shape, a keeper
    1992 daughter, low mileage, pretty, limited edition, but requires some money to maintain
    1995 son, sports model, very fast & peppy, time will tell on durability and maintenance costs

    "Grease is good"

  7. #7

    Default

    I just scored some braided stainless hydraulic line rated and tested to 400 psi. 2 foot sections all with half inch fittings built in on both ends. Scored 16 of these total 32 feet. I know what I'm doing this weekend

  8. #8
    Join Date
    Jan 2007
    Location
    Belize
    Posts
    9

    Default

    I lost a engigine because of those darn hoses. I suggest anyone who is still using the stock hoses to get rid of them and fabricate your own. I learned the hard way.
    1991 Chevy Silverado 2WD Fabtech 4" lift
    6.2 Diesel
    Fresh Overhaul
    Reman injectors
    Reman IP
    Soon to be turboed!!!

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