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NEED ENGINE ADVICE ASAP!!!! PLEASE

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by K5_73, Oct 28, 2001.

  1. K5_73

    K5_73 Registered Member

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    We're putting a 383 in my friends K5 tonight and some weird crap is going on. We started it and it ran for about 3-5 seconds and the rubber seal blew out from the oil filter and oil sprayed everywhere. We figured it was a bad filter and put another one on and the same thing happened. What could be causing this? I've never heard of this happening before on ANY motors. Thanks for the help.

    Stupid hurts
     
  2. K10ANDYKHAMNIC

    K10ANDYKHAMNIC 1/2 ton status

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    its building too much oil pressure , some oil passage must be clogged or sumthing

    WHATS WRONG WITH A 305 ?
    81 K10 GOODYEAR 35" MTRS
    TH350 NP 208
    O R D's axles
    NO BREAKAGE :)
     
  3. riz

    riz 3/4 ton status

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    <font color=purple> that's about it.

    L8r,
    . Riz . <a target="_blank" href=http://www.geocities.com/rizmonkey>www.geocities.com/rizmonkey</a>

    <font color=purple> BOW CHICKA BOW WOW !
     
  4. chevyracing

    chevyracing 1/2 ton status

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    If you have the oil bypass valve blocked off as some people do that will cause that.

    John

    Like to go sloppin' 'round in da mud in a rapid fashion....=) [​IMG]

    <a target="_blank" href=http://community.webshots.com/user/chevyracing>http://community.webshots.com/user/chevyracing</a>
     
  5. K5_73

    K5_73 Registered Member

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    OK, dumb question, but where is the oil bypass valve? Also, since the new oil pump had been sitting in my garage for a few years, and I didn't check the spring before I put it in, I'm thinking I might need to changed the spring to the other one that came with it. I'm hoping it's nothing serious...the last thing I need is more problems.

    Stupid hurts
     
  6. Kajun_K5

    Kajun_K5 Registered Member

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    Does it have an cooling system for the oil?

    Why the hell not?
    <a target="_blank" href=http://www.geocities.com/daniel_ray_deville/my_blazer.htm>http://www.geocities.com/daniel_ray_deville/my_blazer.htm</a>
     
  7. chevyracing

    chevyracing 1/2 ton status

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    The oil filter by-pass valve is the little thing-a-ma-bob that the oil filter screws onto. It is held on by two 7/16 bolts. There will be a little flap on it that should move up and down because there should be a spring behind it. Sometimes people take the little spring out, thread the hole and put a plug into it to get a higher oil pressure reading.
    That is the simpleset (&lt;----spelling) thing to check. Just take off the oil filter and thar she blows.

    John


    Like to go sloppin' 'round in da mud in a rapid fashion....=) [​IMG]

    <a target="_blank" href=http://community.webshots.com/user/chevyracing>http://community.webshots.com/user/chevyracing</a>
     
  8. Blazer1970

    Blazer1970 1/2 ton status

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    Most likely, the relief valve in the oil pump is not functioning. There is a small orifice that can get plugged, and then you will get full pressure.

    Tim

    70 Blazer CST 4X4 350 SM465 NP205
    87 Burb 4X4 350
    01 GMC 2500HD 4X4 Duramax/Allison
     
  9. chevyracing

    chevyracing 1/2 ton status

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    Tim,
    I thought he had full pressure actually too much pressure.

    John

    Like to go sloppin' 'round in da mud in a rapid fashion....=) [​IMG]

    <a target="_blank" href=http://community.webshots.com/user/chevyracing>http://community.webshots.com/user/chevyracing</a>
     
  10. Blazer1970

    Blazer1970 1/2 ton status

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    That's what I mean. If the orifice is plugged, the relief valve will not relieve the pressure, and you will get as much pressure as the pump can deliver (a lot). It will eventually ruin the cam and or distributor gears, or break the oil pump drive shaft.

    Tim

    70 Blazer CST 4X4 350 SM465 NP205
    87 Burb 4X4 350
    01 GMC 2500HD 4X4 Duramax/Allison
     
  11. chevyracing

    chevyracing 1/2 ton status

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    Gottcha.... If that engine is blowing the rubber seal off of an oil filter that is the minimum of damage going on.. I hate it when that happens...
    John

    Like to go sloppin' 'round in da mud in a rapid fashion....=) [​IMG]

    <a target="_blank" href=http://community.webshots.com/user/chevyracing>http://community.webshots.com/user/chevyracing</a>
     
  12. prjt_blzr

    prjt_blzr 1/2 ton status

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    How much RTV did you use?? It is not unusual to get that stuff jammed in the oriface that houses the pressure relief valve for the oil pump. That is where I would start.
     
  13. ZZ4x4

    ZZ4x4 1/2 ton status

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    Definitely replace the oil pump. This is usually the cause for oil filter explosions! JT
     
  14. tlarsw

    tlarsw 1/2 ton status

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    Did you ever figure out what was causing the problem? We encountered the same thing this weekend with a 350 we installed.

    Thanks for any info.

    1986 K10 TPI350/NV4500/Gen2 Doubler/D60(ARB)/14FF(Detroit)/4.56 gears
     
  15. K5_73

    K5_73 Registered Member

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    Yeah, of course it had to be the most difficult thing. The darn check/pressure valve was stuck in the oil pump, so I had to pull the pan and pump, but it's great now! My buddy said that I left two 30 foot black marks in front of his house when I took off! Sweet

    Stupid hurts
     
  16. '73 K5

    '73 K5 1/2 ton status

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    I heard that when there is a bunch of dirt on the pavement it makes it alot easier to lay rubber. Dumping the clutch at 19000 RPM helps too. [​IMG]

    '73 K5
    Chevy good...Ford bad
     
  17. K5_73

    K5_73 Registered Member

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    If you would took a bath once in a while, the street wouldn't be so dirty, hehe. 19000 rpms, wouldn't that be nice?

    Stupid hurts
     

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