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did i bend a valve

Discussion in 'General Tech and Maintenance' started by blink1_8_2dude, Oct 27, 2003.

  1. blink1_8_2dude

    blink1_8_2dude Senior Member

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    ok ive have been running a b18b ecu on my gsr mtor becuase i am working out the difficulties with my p72 ecu but i need to have a mode of transportation. Alright i really dont take the car over 4k rpms but sometimes ill gun it to 6k but only rarely. Anyway what im tryin to ask is whenevr my rpms drop or raise i hear a rattle coming from my engine bay, so what do yal think did i bend a valve or???????? and what are some sympotoms of a bent valve?
     
  2. Accordturbo94

    Accordturbo94 Senior Member

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    are you sure its from the motor? it should do it when your lookin in the engine bay and reving it! you might have a bracket on the firewall or something loose and making it sound like its ticking and what not! I had the same thing happen the other day
     
  3. dang civic

    dang civic Member

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    Most likely, if ur talking about a b18 in an integ, you got a loose header cover plate or the lower plate over the cat. area. Thats purdy common on tegs. If ur wondering about ur valves? It would be more of a tick then a rattle. Like in a wind up clock. Tick, tick, tick ever 2 seconds or something ...constant and always in a repetition.
     
  4. Accordturbo94

    Accordturbo94 Senior Member

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    That sounds about right! let is know dude!
     
  5. Canuck 93 Civic Si

    Canuck 93 Civic Si Senior Member

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    Maybe you have a loose rod bearing.
     
  6. Canuck 93 Civic Si

    Canuck 93 Civic Si Senior Member

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    Maybe you have a loose rod bearing.
     
  7. TurboMirage

    TurboMirage YEEAAAHHH VIP

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    double posting owns you.


    i had a loose rod bearing in my old 240. its still loose.
     
  8. rudeludenotmeanthough

    rudeludenotmeanthough Senior Member

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    On older preludes, the down pipe is made with two pipes

    An inside pipe, and an outside pipe. It is used in order to keep heat from transfering directly into the engine bay, and dampen sound level.

    it looks like this
    [​IMG]

    If the botom of your down pipe is bent, it could be hitting the inner pipe causeing a rattle.

    Im not sure if yours is designed like this, but it is a POSSIBE reason.

    Check out this site to help you better understand what im talking about
    http://www.ludespeed.com/products/prelude/...xfix/index.html

    EDIT: if you attempt this and cut a huge hole in your header/downpipe, i am NOT at fault.
     
  9. jamesA

    jamesA Well known pissed off telephone guy VIP

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    :eek:fftopic: The site's been acting up it seems like the past few days...double posting, being rather slow, not letting me post at all and then returning a flood error...weird.


    :eek:ntopic: I dunno. :shrug2:
     
  10. rudeludenotmeanthough

    rudeludenotmeanthough Senior Member

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    I just posted something about that in the Members lounge..... hmmmmmmmm :hmm:
     
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