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Thread: Intake pipe and poncam questions

  1. #1
    Dorset & Hants Rep pointz's Avatar
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    Intake pipe and poncam questions

    Anyone experienced their intake pipe collapsing? And if so at what level of boost?

    Have tomei poncams fitted with adjustable pulleys (Need to check which ones) but by how many degrees should the pulleys be adjusted?

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    Guest Asht_200's Avatar
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    I believe you can get springs to stop that but why is the head sucking that much? They my old cams?


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    Dorset & Hants Rep pointz's Avatar
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    It has the coil inside it but to be honest I can still squeeze enough to restrict it even on idle.

    Nah that engines not in the car yet almost ready!!

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    Dorset & Hants Rep pointz's Avatar
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    I'm not certain it is collapsing just wondered 8f it has happened to anyone previously

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  5. #5
    Guest Asht_200's Avatar
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    Quote Originally Posted by pointz View Post
    It has the coil inside it but to be honest I can still squeeze enough to restrict it even on idle.

    Nah that engines not in the car yet almost ready!!

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    I want a ride when it is done


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    Guest ANDY black s13's Avatar
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    not had the intake pipe collapse on a CA or SR,or read/heard of it happenig tbh,
    I had it happen years ago with a volvo 740 2.0 N/A automatic when I floured it to about 80 and it wouldn't pull any faster
    and it had sucked the pipe in so much it was wheezing on idle,

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    Dorset & Hants Rep pointz's Avatar
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    Quote Originally Posted by ANDY black s13 View Post
    not had the intake pipe collapse on a CA or SR,or read/heard of it happenig tbh,
    I had it happen years ago with a volvo 740 2.0 N/A automatic when I floured it to about 80 and it wouldn't pull any faster
    and it had sucked the pipe in so much it was wheezing on idle,
    My mate Liam (lp1121 on here) had his collapsing at just over a bar during mapping on his 15

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    your air filter is too small if your sucking your intake pipe shut.

  9. #9
    Guest Asht_200's Avatar
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    Never thought about that, but you are probably right


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    Guest ANDY black s13's Avatar
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    Quote Originally Posted by pointz View Post
    My mate Liam (lp1121 on here) had his collapsing at just over a bar during mapping on his 15

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    thats a real common set up and first one I've heard of have it happen to,I suspect something like the pipe has reacted to something like
    a puddle of breathing fumes sitting in the pipe for years and its gone soft enough it can collapse, or as mentioned before me the air filter is restrictive
    ,full of crud? easy test just take it off and run it with no filter,
    the stock SR intake has no spring but its quite firm

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    CA intake has a spring. The air filter would have to be pretty cruddy to restrict flow that much.The pipe can get quite hot due to referred heat from the tubby making the spring more important.

  12. #12
    Guest Asht_200's Avatar
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    Time for a hard pipe


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    Dorset & Hants Rep pointz's Avatar
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    Any information regarding cam gears setting?

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  14. #14
    Guest Asht_200's Avatar
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    Quote Originally Posted by pointz View Post
    Any information regarding cam gears setting?

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    They need to be mapped.

    It could be worse. I bought 8 UPS from Amazon and sent them back because I hadnít put the fuse in...


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