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Thread: 98 6.5td dual thermostat manifold

  1. #1
    Join Date
    Nov 2007
    Posts
    273

    Default 98 6.5td dual thermostat manifold

    I think that I may have a cracked cross-over manifold. Where is the best place (cheapest) place to buy one?

    I will even take a used one.

    Welding is an option but I would prefer one completely intact.

    Thanks

    Joe
    ****WANTED BURNED OUT PMD/FSD MODULES FOR EXPERIMENT. ****

    1998 Silverado, 6.5TD, 210k, long bed. 1984 Chevy Customized Van, 6.2.
    1985 Mercedes-Benz SD, diesel, 220k
    1990 Ford, F-250, 7.3 liter, bad engine.
    Onan, 4 cyl. Diesel, Marine Generator.
    Onan, 4 cyl. Diesel, Stationary Generator.
    Onan, 4 cyl. Diesel, Air-cooled Engine.
    2 Briggs/Faryman Diesels to rebuild.

  2. #2
    Join Date
    Dec 2007
    Location
    Sunnyside WA
    Posts
    89

    Default

    they are getting harder and harder to get,


    are the outlet hose sizes diff between the 6.2 and 6.5?
    1976 m882 shortened with a 6.2 diesel, np205 and sm465 and HMMWV tires
    1992 Jeep YJ wrangler (project) plans are: 6.2 diesel engine, SM-465, Np-205, Dana 44 front, Dana 60 rear
    1989 GMC suburban, 6.5 TD, TH400, Np-241, dana 44 front , 14bolt rear with Gov locker.
    1997 Kenworth T800, 3406 Cat 575 HP, 18 speed, 4 speed Aux, 3.73 rears
    1986 K30 M1008 6.2 diesel th400 np208 4.56 gears dana 60 front and 14 blt rear

    N/A? = Non-Aspirated? Not Available? Needs Air?

    ΜΟΛΩΝ ΛΑΒΕ

  3. #3
    Join Date
    Feb 2000
    Location
    Montana
    Posts
    11,382

    Default

    Quote Originally Posted by joe bleaux View Post
    Welding is an option but I would prefer one completely intact.
    Thanks
    Joe
    Find someone local to you that knows how to TIG weld aluminum. The new price for the dual thermostat crossover is about $100. My guess, you'll be able to get yours welded for less.

    Incidentally, I recommend using flat washers under the bolts on the four outer bolt holes, where it bolts to the cylinder heads. Those bolt heads tend to dig into the aluminum while torquing the bolts down, and which then breaks the ear(s) on the housing.

    Jim

  4. #4
    Join Date
    Nov 2007
    Posts
    273

    Default

    Thanks, Jim. That is a very good idea about washers under the bolts. I think that is exactly where mine cracked.

    I have a big tig welder but don't have it hooked up at the time (water pump, mains, gas, etc.) I will try to find someone locally.

    76, I didn't even know that the 6.2 had dual thermostat manifold.

    Thanks

    Joe


    Quote Originally Posted by More Power View Post
    Find someone local to you that knows how to TIG weld aluminum. The new price for the dual thermostat crossover is about $100. My guess, you'll be able to get yours welded for less.

    Incidentally, I recommend using flat washers under the bolts on the four outer bolt holes, where it bolts to the cylinder heads. Those bolt heads tend to dig into the aluminum while torquing the bolts down, and which then breaks the ear(s) on the housing.

    Jim
    ****WANTED BURNED OUT PMD/FSD MODULES FOR EXPERIMENT. ****

    1998 Silverado, 6.5TD, 210k, long bed. 1984 Chevy Customized Van, 6.2.
    1985 Mercedes-Benz SD, diesel, 220k
    1990 Ford, F-250, 7.3 liter, bad engine.
    Onan, 4 cyl. Diesel, Marine Generator.
    Onan, 4 cyl. Diesel, Stationary Generator.
    Onan, 4 cyl. Diesel, Air-cooled Engine.
    2 Briggs/Faryman Diesels to rebuild.

  5. #5
    Join Date
    Dec 2007
    Location
    Sunnyside WA
    Posts
    89

    Default

    im taking about the 6.5 dual compared to the 6.2 single crossover
    1976 m882 shortened with a 6.2 diesel, np205 and sm465 and HMMWV tires
    1992 Jeep YJ wrangler (project) plans are: 6.2 diesel engine, SM-465, Np-205, Dana 44 front, Dana 60 rear
    1989 GMC suburban, 6.5 TD, TH400, Np-241, dana 44 front , 14bolt rear with Gov locker.
    1997 Kenworth T800, 3406 Cat 575 HP, 18 speed, 4 speed Aux, 3.73 rears
    1986 K30 M1008 6.2 diesel th400 np208 4.56 gears dana 60 front and 14 blt rear

    N/A? = Non-Aspirated? Not Available? Needs Air?

    ΜΟΛΩΝ ΛΑΒΕ

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