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Thread: this lovely sound

  1. #21
    Administrator Ron's Avatar
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    Bosch calls out 3402 and D3402...

  2. #22
    Member
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    From the Bosch (USA) website below 3421 is not listed for Delorean. There is a difference between them on the relief valve P.S.I.

    Vehicles compatible with : Premium Oil Filters : 3421
    https://www.boschautoparts.com/en/ym...0Oil%20Filters

    Specs for 3421:
    Part Number:
    3421
    Anti-Drain Back Valve: Yes
    Connection Size: 3/4-16
    Filtering Material: Cellulose Paper
    Gasket Material: Nitrile
    Inner Diameter Bottom: 0
    Non Slip Grip: No
    Oil Filter Height (in): 4.74 in
    Oil Filter Type: Spin-On/Canister
    Relief Valve P.S.I.: 25-35
    Removal Nut: No


    3402 is listed as compatible for Delorean

    Vehicles compatible with : Premium Oil Filters : 3402
    https://www.boschautoparts.com/en/ym...0Oil%20Filters

    Specs for 3402:
    Part Number:
    3402
    Anti-Drain Back Valve: Yes
    Connection Size: 3/4-16
    Filtering Material: Cellulose Paper
    Gasket Material: Nitrile
    Inner Diameter Bottom: 0
    Non Slip Grip: No
    Oil Filter Height (in): 3.75 in
    Oil Filter Type: Spin-On/Canister
    Relief Valve P.S.I.: 8-16
    Removal Nut: No

  3. #23
    Senior Member smallclone's Avatar
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    Location:  PA

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    Quote Originally Posted by JETS 81 DMC View Post
    From the Bosch (USA) website below 3421 is not listed for Delorean. There is a difference between them on the relief valve P.S.I.

    Vehicles compatible with : Premium Oil Filters : 3421
    https://www.boschautoparts.com/en/ym...0Oil%20Filters

    Specs for 3421:
    Part Number:
    3421
    Anti-Drain Back Valve: Yes
    Connection Size: 3/4-16
    Filtering Material: Cellulose Paper
    Gasket Material: Nitrile
    Inner Diameter Bottom: 0
    Non Slip Grip: No
    Oil Filter Height (in): 4.74 in
    Oil Filter Type: Spin-On/Canister
    Relief Valve P.S.I.: 25-35
    Removal Nut: No


    3402 is listed as compatible for Delorean

    Vehicles compatible with : Premium Oil Filters : 3402
    https://www.boschautoparts.com/en/ym...0Oil%20Filters

    Specs for 3402:
    Part Number:
    3402
    Anti-Drain Back Valve: Yes
    Connection Size: 3/4-16
    Filtering Material: Cellulose Paper
    Gasket Material: Nitrile
    Inner Diameter Bottom: 0
    Non Slip Grip: No
    Oil Filter Height (in): 3.75 in
    Oil Filter Type: Spin-On/Canister
    Relief Valve P.S.I.: 8-16
    Removal Nut: No
    hmm wish i knew this the other day.


    anyways, i drained the system, got the drain plug tool at pepboys.

    i put the 3421 filter on. started it up and sounded great!!!!!!!

    fast fwd 5minutes plus, the sound was back in full force.

    im stumped.

    dunno why it would sound great at start up then faulter again.

  4. #24
    Senior Member DMC-81's Avatar
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    Location:  Florida

    Posts:    1,721

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    Club(s):   (DCF)

    Quote Originally Posted by JETS 81 DMC View Post
    From the Bosch (USA) website below 3421 is not listed for Delorean. There is a difference between them on the relief valve P.S.I.

    Vehicles compatible with : Premium Oil Filters : 3421
    https://www.boschautoparts.com/en/ym...0Oil%20Filters

    Specs for 3421:
    Part Number:
    3421
    Anti-Drain Back Valve: Yes
    Connection Size: 3/4-16
    Filtering Material: Cellulose Paper
    Gasket Material: Nitrile
    Inner Diameter Bottom: 0
    Non Slip Grip: No
    Oil Filter Height (in): 4.74 in
    Oil Filter Type: Spin-On/Canister
    Relief Valve P.S.I.: 25-35
    Removal Nut: No


    3402 is listed as compatible for Delorean

    Vehicles compatible with : Premium Oil Filters : 3402
    https://www.boschautoparts.com/en/ym...0Oil%20Filters

    Specs for 3402:
    Part Number:
    3402
    Anti-Drain Back Valve: Yes
    Connection Size: 3/4-16
    Filtering Material: Cellulose Paper
    Gasket Material: Nitrile
    Inner Diameter Bottom: 0
    Non Slip Grip: No
    Oil Filter Height (in): 3.75 in
    Oil Filter Type: Spin-On/Canister
    Relief Valve P.S.I.: 8-16
    Removal Nut: No
    Thanks guys. I stand corrected. With a relief valve at 8-16 psi, the filter must be bypassed more often than not.

    Quote Originally Posted by smallclone View Post
    hmm wish i knew this the other day.


    anyways, i drained the system, got the drain plug tool at pepboys.

    i put the 3421 filter on. started it up and sounded great!!!!!!!

    fast fwd 5minutes plus, the sound was back in full force.

    im stumped.

    dunno why it would sound great at start up then faulter again.
    Wow, that's weird. Perhaps that behavior is related to thicker oil at startup providing more lubrication, then as the engine warms up the oil gets thinner. Perhaps your oil pump is failing or the blockage as mentioned. It's anybody's guess. Regardless, as Dan said above, I think you need to have it inspected immediately without trying to drive it anymore. When whoever has the offending valve cover off, I think the cause will be apparent.

    If you'd like, you can PM your address, and I can send you my spare DMC oil filter and crush washer. Then you'll know for sure you have the right one.
    Dana

    1981 DeLorean DMC-12 (5 Speed, Gas Flap, Black Interior, Windshield Antenna, Dark Gray)
    Restored as "mostly correct, but with flaws corrected". Pictures and comments of my restoration are in the albums section on my profile.
    2006 Dodge Magnum R/T (D/D)
    2010 Camaro SS (Transformers Edition)

  5. #25
    Senior Member smallclone's Avatar
    Join Date:  Jul 2011

    Location:  PA

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    Quote Originally Posted by DMC-81 View Post
    Thanks guys. I stand corrected. With a relief valve at 8-16 psi, the filter must be bypassed more often than not.



    Wow, that's weird. Perhaps that behavior is related to thicker oil at startup providing more lubrication, then as the engine warms up the oil gets thinner. Perhaps your oil pump is failing or the blockage as mentioned. It's anybody's guess. Regardless, as Dan said above, I think you need to have it inspected immediately without trying to drive it anymore. When whoever has the offending valve cover off, I think the cause will be apparent.

    If you'd like, you can PM your address, and I can send you my spare DMC oil filter and crush washer. Then you'll know for sure you have the right one.
    thanks! but its ok, i put on the 3402 tonight.

    im not going to start the car at all anymore, im taking it to a garage right near my house next week and hoping for the best.

  6. #26
    Senior Member smallclone's Avatar
    Join Date:  Jul 2011

    Location:  PA

    Posts:    101

    My VIN:    6982

    Quote Originally Posted by smallclone View Post
    thanks! but its ok, i put on the 3402 tonight.

    im not going to start the car at all anymore, im taking it to a garage right near my house next week and hoping for the best.
    now im gonna start sounding like a lunitic but i checked the dip stock and it says im on low, i just put in 7 quarts.

  7. #27
    EFI'd dn010's Avatar
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    Location:  Florida: Pinellas County

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    this lovely sound

    This engine takes a lot of oil. How much did you put in to begin with? If itís reading on the stick and you put in 7 qts, good luck with that!
    -----Dan B.

  8. #28
    Senior Member smallclone's Avatar
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    Quote Originally Posted by dn010 View Post
    This engine takes a lot of oil. How much did you put in to begin with?
    7 quarts

  9. #29
    EFI'd dn010's Avatar
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    So 14 qts total...?
    -----Dan B.

  10. #30
    Senior Member smallclone's Avatar
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    Quote Originally Posted by dn010 View Post
    So 14 qts total...?
    no, i drained the oil, and added 7 quarts

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