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Thread: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

  1. #1
    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
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    LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    Here is what I have for a 2.5L LM setup. Its based on Geoff Allan's Blueberry 60 codebase so it has the CEL Blink on knock and a launch rev limiter set at 3500 rpms. Ecu controlled boost is set at 16psi with part throttle at ~9 psi. Makes for a smooth drive. Table file is included for D-cal and a CalX file is included for ChEM2. Happy Tinkering.

    Brian
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    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

  2. #2
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    I know this is an old post but is this cal safe? Im tired of blowing up my engine. My car is an all stock 2.5L w/ mitsu turbo. 2.5" exhaust and glhs IC/radiator.

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    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    its pretty safe especially with ecu controlled boost. lemme take a look at it again. i need to update these with some of my latest changes/findings.

    Brian

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

  4. #4
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    cool thanks

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    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    here are some updates on my current base cals based on some testing.

    Brian
    Attached Files Attached Files

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

  6. #6
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    I'm going to run this cal on the CSX today for engine break-in. I have a 2.5L Swirl head cal based on the Blueberry 60 and it seems like I have something messed up in the timing.

  7. #7
    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    stock head?

    it might be a little lean on startup but it should be pretty good. my car likes it its a pretty conservative cal.

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

  8. #8
    boostaholic
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    I broke the motor in today on the cal and it seemed fine at 20psi. No knock and decent power. Of course, now I need to add a bit of timing and pull fuel so I can take advantage of my alcohol again. I definitely approve of the cal as a good baseline.

    As far as the head goes, it has the stock valves, unshrouded combustion chamber, cleaned up bowls and smoothed ports. Nothing serious, but definitely several hours worth of work. Still a stock turbo cam with Neon lash adjusters.

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    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    cool. glad that it works well.

    Brian

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

  10. #10
    Hybrid booster
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    That old 2.5 G head cal works great. I sure wish I still had a car with a 2.5! Ahhh I miss my 2.5.....

  11. #11
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    Does anyone find the Knock sensor sensitive to engine sounds? The CEL flashes at 1psi and I've achieved 18psi without physically hearing any knock. Perhaps my timing is advanced? any suggestions on why my car "pings the sensor" at 1psi or if anyone else has had this problem input would be appreciated. Thanks

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    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    what were the conditions when the cel came on at 1psi?

    did it go off as the boost rose?

    Brian

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

  13. #13
    Mitsu booster
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    Quote Originally Posted by Aries_Turbo View Post
    what were the conditions when the cel came on at 1psi?

    did it go off as the boost rose?

    Brian
    Todays weather is approx 10-15 degrees C, no rain. At cold start there is no knock sensor warning until i have about 4 bars on the temp gauge (digital dash). once the car is warm the CEL flashes at 1psi. My gauge doest show vac and I am under the impression it flashes knock warning at 0. I find when I let off the throttle it flashes once or twice 'after' the BOV has opened. I am currently driving with no O2 sensor until mine arrives in the mail. Through your experiece, and others, is the knock sensor sensitive to engine noise? should I expect it (is it normal) to flash here and there from normal driving? without O2 it's hard to tell if it's lean, but is it common to be pinging as low as 0-1lb boost?????? From what I have read this cal is pretty good, maybe I should be posting my question in a different thread

  14. #14
    Mitsu booster
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    I should mention, the rev limiter works good but and the CEL flashes here and there too....

    ¿

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    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    wait? no o2 sensor? im glad it runs well enough but you need to fix stuff before you ask questions that could be caused by 90 different things

    yeah the cel will blink on that cal when the limiter is in effect.

    Brian

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

  16. #16
    Hybrid booster
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    When I used to run the 2.5 G head cal it would indeed flash CEL frequently when letting off the throttle around 1-5 psi of boost. I always ignored it but now that I have a different car with a different cal I feel like the CEL light should be coming on even though it does not.

  17. #17
    Supporting Member Turbo Mopar Contributor Rampage16V's Avatar
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    What is the switch for the 3500 launch limiter? Is it the lack of a speed sensor signal?
    Can I get a copy of this cal without this feature?...swirl
    Thanks....dean

    Dean Stillie
    87 Shelby Z 2.4 Turbo 9.06@146.05
    82 Rampage 2.4 Turbo 10.14@138.02

  18. #18
    Hoosier Daddy?? Turbo Mopar Staff Clay's Avatar
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    its set to come on below a certain MPH. I believe in the 'stock' BB60 its like 2 mph. So if you dont have a speed sensor that could be a problem. It can be turned off if you recompile the BB60 with that option turned off.
    Clay
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  19. #19
    Supporting Member Turbo Mopar Contributor Rampage16V's Avatar
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    That would be great if I knew what I was doing. Anyone want to put it together for me? I can burn a chip just never learned this code

    Dean Stillie
    87 Shelby Z 2.4 Turbo 9.06@146.05
    82 Rampage 2.4 Turbo 10.14@138.02

  20. #20
    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
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    Re: LM / 1987 / 2.5L / 8V / 3-Bar / +40% / G-Head and Swirl

    so what you want is a cal with no staging limiter, set up for what combination?

    Brian

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

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