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Thread: Backyard Metal Fabrication

  1. #31
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  2. #32
    Registered User Rz's Avatar
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    you should pretty good control for only 2 years welding.
    well done.

  3. #33
    Registered User JZK25's Avatar
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    Quote Originally Posted by noizy323 View Post
    Cylinders are paired depending on the firing order of the engine. If yours is 1342 then cylinders 1 and 3 are paired and 2 and 4 are paired.
    Yeah no, opposites in the firing cycle are paired. 1 and 4, 3 and 2(normal I4) or 1 and 2, 3 and 4 for a subaru.
    David Fraser - Automotive Historian!

    Quote Originally Posted by bigmuz View Post
    You can't polish a turd but you can put 600hp in it and laugh your fucking arse off coming past someone sideways at Powercruise.

  4. #34
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    Quote Originally Posted by JZK25 View Post
    Yeah no, opposites in the firing cycle are paired. 1 and 4, 3 and 2(normal I4) or 1 and 2, 3 and 4 for a subaru.
    I'm not quite sure what you are trying to correct. My firing order is 1-3-4-2, so if I pair the opposites in the firing order that pairs 1 and 3 together, and 2 and 4 together.

  5. #35
    sack riding 10sec rx7's Avatar
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    Jz is right, 1 and 4, 2 and 3
    im a cunt
    and apparently i dont know shit...

  6. #36
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    My mistake, that'll need fixing.

  7. #37
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    Conventional wisdom is the pairing of 1 and 4, 3 and 2.

    A motor out of the US from a well known formula race engine builder did have it around your way. Following no less an authority than Vizard on pipe diameters/lengths, etc and usual pairing, the engine proceeded to lose a shitload of torque. So you can be right or very wrong....only discovered by testing.

    It's interesting that engines that usually have very high outputs per litre, sport motorcycles, often have the "wrong" ones together.

    Nice work by the way!

  8. #38
    Registered User JZK25's Avatar
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    Pairing them for a twin scroll turbo vs pairing them for Bill stuff like frequencies and that shit may not be the same thing. Twin scroll = 180degree pairs on 4cyl or it doesn't work.
    David Fraser - Automotive Historian!

    Quote Originally Posted by bigmuz View Post
    You can't polish a turd but you can put 600hp in it and laugh your fucking arse off coming past someone sideways at Powercruise.

  9. #39
    blinks ... Billzilla's Avatar
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    Quote Originally Posted by gxxr View Post
    Conventional wisdom is the pairing of 1 and 4, 3 and 2.

    A motor out of the US from a well known formula race engine builder did have it around your way. Following no less an authority than Vizard on pipe diameters/lengths, etc and usual pairing, the engine proceeded to lose a shitload of torque. So you can be right or very wrong....only discovered by testing.
    Had a mate with a 4AGE that sounded more like a WRX all the time. I fiddled with the Haltech for a while but just couldn't make it sound like it wasn't on three pots.
    So I just made it go as good as I could ..... then when I was looking under the bonnet I suddenly realised what the problem was ....



    Howls of laughter for a few minutes.
    I quizzed the guy that made the extractors and he said no, that was right, they did all the V8's like that and they worked fine.
    Ha-ha.
    Contact me for -
    Light fabricaton & welding services.
    Autocad design & water-cutting of manifold flanges and other parts.
    3D printing in ABS plastic.
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    http://www.billzilla.org

  10. #40
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    Thanks for all of the input guys. Yes I certainly did pair the cylinders incorrectly but am sure to have it fixed quite soon. On the flip side of this error I will be doing a bit of testing on how great or small the difference with boost response and torque/power before and after the pairing fix. When it's all done I'll post the pics on here and post the data on the forced induction forum.

    Cheers.

  11. #41
    Registered User orionvh770's Avatar
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    nice work on the welding mate looks real good. now if i could only get my mig to do that

  12. #42
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    Here are a few more shots of some of the work I have done to my mate Mark's Ke20, and yes another backyard yob

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  13. #43
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    Quote Originally Posted by noizy323 View Post
    Here are a few more shots of some of the work I have done to my mate Mark's Ke20, and yes another backyard yob
    Wouldn't mind picking your brains about the radiator and intercooler combination that you've used in there. Is it an off the shelf item or all custom made from cores? What sizes did you end up going with? I'm thinking about doing the same thing on my ke25 to reduce the weight over the front of the car (race car so weight reduction helps everywhere)

    What sort of inlet temps do you see and what boost levels?

    There is some nice neat work there, you should be happy with that.

    Any advice would be appreciated.

    Cheers
    Dave

  14. #44
    Registered User JZK25's Avatar
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    Very nice man, you should be doing that shit for a job.
    David Fraser - Automotive Historian!

    Quote Originally Posted by bigmuz View Post
    You can't polish a turd but you can put 600hp in it and laugh your fucking arse off coming past someone sideways at Powercruise.

  15. #45
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    Very nice job, hope you have good bushes on the spark leads where they go through the firewall though! Had a mate that used to run them like that, used to scare the crap out of me, ha. Maybe I'm just soft.

  16. #46
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    Hi Dave

    Thanks for the comments. Actually, The radiator and aftercooler combo are not made by me, I only mounted and plumbed them up. I believe the radiator to be a core well known on the toyota forums. The aftercooler is just an ebay unit. At the moment the car has not been started yet so I can't give you an idea on inlet temps. If you are looking to save every bit of weight off the front end, generally tube/fin cores are lighter than that of bar/plate type of comparable size.

    Cheers
    Adam

  17. #47
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    Quote Originally Posted by JZK25 View Post
    Very nice man, you should be doing that shit for a job.
    I am

  18. #48
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    Quote Originally Posted by garvice View Post
    Very nice job, hope you have good bushes on the spark leads where they go through the firewall though! Had a mate that used to run them like that, used to scare the crap out of me, ha. Maybe I'm just soft.
    Thanks champ. I know you can get some through firewall spark plug connectors but they are quite expensive. Mark has insulated the hole in the firewall so abrasion shouldn't be a problem.

  19. #49
    RNJ Fabrication
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    Nice work !
    RNJ Fab.
    milling, machining, turning, welding, design.
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  20. #50
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    Quote Originally Posted by noizy323 View Post
    Hi Dave

    Thanks for the comments. Actually, The radiator and aftercooler combo are not made by me, I only mounted and plumbed them up. I believe the radiator to be a core well known on the toyota forums. The aftercooler is just an ebay unit. At the moment the car has not been started yet so I can't give you an idea on inlet temps. If you are looking to save every bit of weight off the front end, generally tube/fin cores are lighter than that of bar/plate type of comparable size.

    Cheers
    Adam
    Thanks Adam, much appreciated.

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