CVT failure: Details inside

  1. Papayank

    Papayank Senior Member

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    24 psi and yours blown....gtman claims
    Your at 24 psi and yours blown.....#Gtman didn't you say your making 26 psi?
     
  2. theblackdogman

    theblackdogman Senior Member

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    The TSP non-si CVT target is 25, however, it will make 26+ during simulated CVT "shifts" per @D-RobIMW. It's perfectly normal. The conclusion of saying "you blew your motor because of 24 psi" is simply not true.
     
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  3. Papayank

    Papayank Senior Member

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    Ok
    Ok
     
  4. dragonov

    dragonov Member

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    I'm just curious. What was your TQ and HP?
     
  5. a c i d.f l y

    a c i d.f l y Senior Member

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    Didn't someone take a CVT on the track, and around 225ft/lb torque would causing scoring on the belt and dome inside the CVT? But at 200ft/lb it could be run hard all day long, and showed zero signs of scoring? Wish I could find that post.
     
  6. dallasjhawk

    dallasjhawk Senior Member

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    both @Myx and @xjoshuax89 run more than that, have been to the track and haven't ruined their cvts. The Video thats been floated about the max tq a cvt can take has no factual information with it and was just a cvt the happened to break while tuning it. could have been faulty from the factory because that happens more than tunes breaking them
     
  7. SDzx

    SDzx Member

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    I think that was from the hondata video about cvts.
     
  8. mehrdad

    mehrdad Senior Member

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    Just a lot of great details are shared, thanks a lot and glad it’s perfectly fine now.
     
  9. gtman

    gtman Senior Member

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    #39 gtman, Sep 9, 2019
    Last edited: Sep 9, 2019
    There's this misconception that this Hondata video mentions the actual torque limit. It doesn't. For the test, they upped boost to create "V6 levels of torque" and the CVT failed. I wish the video would have actually mentioned a number because the video winds up being somewhat useless.

     
  10. OP
    OP
    Coupe-R

    Coupe-R Senior Member

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    Unfortunately I have no idea what the numbers were at the time. I didn't bother getting the dyno plot from my 2nd re-tune as they couldn't get a proper reading and the numbers were obviously wrong (see my post about that earlier in the thread).

    Since the 2nd re-tune was "faster" than the original tune which I had the dyno plot for, It's likely between 205-220hp and 220tq-240tq.
     
  11. xjoshuax89

    xjoshuax89 Senior Member

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    For reference the 250 number mentioned is what is coded into our ecu but it is set at 250nm and not ft lbs and we all know that our cars easily surpass that with no problem.

    250nm = 184 ft lbs
     
  12. gtman

    gtman Senior Member

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    A couple years ago, I brought up this 250 nm tq question with Hondata. It didn't make any sense to me as their own dynos showed the car making more than that stock. What was explained to me was that 250 nm number was some sort of "ECU calculation" thing and had nothing to do with actual engine dyno torque output.
     
  13. garoto

    garoto Senior Member

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    There’s so much to say about all of this, particularly the part where you literally shafted Honda and you should have been the one to pay for a new tranny. But I am just gonna say, that you can have butter as tires and you wouldn’t need traction control to be on when getting off the line with a CVT.
     
  14. gtman

    gtman Senior Member

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    Interesting. I think you might be surprised.
     
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  15. dallasjhawk

    dallasjhawk Senior Member

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    Lets not ignore all the times the dealer shafts people, from sales price, to the add ons, to the finance department to denying warranty for no good reason at all. Yeah, he shouldnt feel bad at all actually.
     
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