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Thread: Bosch EV12 injectors?

  1. #11
    President, DeLorean Industries
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    Lol... High impedance injectors such as these are a bit flaky at duty cycles above 85%.

  2. #12
    '82 T3 Turbo FABombjoy's Avatar
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    I'm thinking the 031J from the Audi TT turbo is a winner as the TT makes 225HP with 4 of them @ 3b fuel pressure and takeoffs are plentiful.

    You should shoot me a price of what you offer so I can weigh my options
    Luke S :: 10270 :: 1982 Grey 5-Speed :: Single T3 .60/.48 Watercooled :: Borla Exhaust :: MSD Ignition :: MS3X EFI :: DevilsOwn Methanol Injection

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  3. #13
    Not a DeLorean Guru
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    You can calculate how big the injectors should be based on your expected horsepower; and best to not exceed 85% duty cycle for injector health.
    -Mike
    1981 DeLorean, heads/cams/exhaust, EFI
    1999 Corvette, heads/cam/exhaust, 440 BHP
    2005 Elise, stock
    2016 Chevy Cruze

  4. #14
    '82 T3 Turbo FABombjoy's Avatar
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    ...plus a touch more for turbo cars...
    Luke S :: 10270 :: 1982 Grey 5-Speed :: Single T3 .60/.48 Watercooled :: Borla Exhaust :: MSD Ignition :: MS3X EFI :: DevilsOwn Methanol Injection

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  5. #15
    '82 T3 Turbo FABombjoy's Avatar
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    EV6 vs EV12 dual cone test. Not super scientific but satisfying to my own curiosity.

    EV12 look good. Seems the vast majority of "in the wild" EV12 are dual cone but both cones spray the valve nicely with very little (if any) wetting of the injector port wall.
    EV6 is a bit dribbly since the injection point is higher and strikes the injector port wall. Single cone version would probably be preferred but I was having trouble finding them with usable flow numbers for anything but stock power levels.

    Have decided on p/n 0280155897 (06A906031S) - 30lb/hr EV12 which are super cheap and plentiful. I'll profile dead times and post the results.

    Last edited by FABombjoy; 07-12-2017 at 01:51 PM.
    Luke S :: 10270 :: 1982 Grey 5-Speed :: Single T3 .60/.48 Watercooled :: Borla Exhaust :: MSD Ignition :: MS3X EFI :: DevilsOwn Methanol Injection

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  6. #16
    '82 T3 Turbo FABombjoy's Avatar
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    Here it is, $200 later!

    Injector dead time (latency) profile for 0 280 155 897
    30LB Bosch EV12. Jetronic electrical connector. Plenty of headroom for a NA or moderate boost turbo 2.8. Used in 1.8T engines and "Cheap as chips" on eBay - I paid about $10/injector

    Important Note:
    These injectors have an angled spray pattern. To ensure good spray on the intake valve the electrical connectors must face the center of the block.

    Jetronic connectors have a provision for weather boot but this will interfere with the intake manifold at cylinders 1,3,4,6. You can cut the boot mount off of the connector and backfill the terminals with suitable high temp silicone. This will not interfere with the weatherpack seal between the connector body & injector.

    0280155897.jpg

    How well do these injectors work? Hell if I know! I should have an answer in September
    Luke S :: 10270 :: 1982 Grey 5-Speed :: Single T3 .60/.48 Watercooled :: Borla Exhaust :: MSD Ignition :: MS3X EFI :: DevilsOwn Methanol Injection

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  7. #17
    Not a DeLorean Guru
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    My VIN:    01049

    Be sure to locate a Fanzilla to keep your engine temperature under control.
    -Mike
    1981 DeLorean, heads/cams/exhaust, EFI
    1999 Corvette, heads/cam/exhaust, 440 BHP
    2005 Elise, stock
    2016 Chevy Cruze

  8. #18
    Dr. Bob Bob635's Avatar
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    Impressive research and testing.

  9. #19
    '82 T3 Turbo FABombjoy's Avatar
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    Thanks, hopefully it works out! I wish I had more time to properly test on-car using a fuel rail & pump.

    Participation in EFI seems to have peaked but hopefully someone else might benefit from this data.
    Luke S :: 10270 :: 1982 Grey 5-Speed :: Single T3 .60/.48 Watercooled :: Borla Exhaust :: MSD Ignition :: MS3X EFI :: DevilsOwn Methanol Injection

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  10. #20
    President, DeLorean Industries
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    Quote Originally Posted by FABombjoy View Post
    Thanks, hopefully it works out! I wish I had more time to properly test on-car using a fuel rail & pump.

    Participation in EFI seems to have peaked but hopefully someone else might benefit from this data.
    Sent you some goodies.

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