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    1. #71
      Junior Member rundy's Avatar
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      Quote Originally Posted by ScottishBrick View Post
      No theyíre super cheap and readily available cause itís a TD04 and the downpipe is the same all angle flange turbos.
      Oh cool. I wonder why Volvo didnít just go with a 19T on the Rís if it outflows the K24 anyways?


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      Current: 2007.5 Volvo S60 T5 M66 Magic Blue on 2-Tone // 1992 Volvo 240 N/A M47 Silver on Charcoal // 1991 Toyota MR2 w/ 1993 5spd 3S-GTE swap Red on Charcoal

      Past: 1999 Volvo S70 N/A M56 Nautic Blue on Charcoal (Kaputt) // 1988 Volvo 240 N/A M47 Grey on Charcoal (Totalled) // 1998 V70 T5 M56 Black on Charcoal (Kaputt)

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    3. #72
      Senior Member ScottishBrick's Avatar
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      @Volvbro's 2007 S60 T5M Thread

      Quote Originally Posted by rundy View Post
      Oh cool. I wonder why Volvo didnít just go with a 19T on the Rís if it outflows the K24 anyways?


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      Cause Ford is cheap and had a deal with kkk-borgwerner. Kinda like how the ďrĒ manifold saves supply chain money but thatís all itís good for.
      Last edited by ScottishBrick; 10-12-2020 at 12:09 PM.
      2003 V70 T5 - Mystic/Graphite - M56LK - 211k - K24/Greens/Do88/Quaife/SMF/P2R Clutch/DW300C/H&R/Bilstein TC/316mm & 308mm Brakes - SteveO Tuned
      1999 V70 T5 - Pewter/R Graphite & Alcantara - AW42 - 305k - Daily/Work Wagon
      1999 V70 T5 - Nautic/R Graphite & Alcantara - M56H - 177k - Rescued
      1999 V70 T5 - Emerald/Graphite - M56H - 119k - Garage Queen
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    4. #73
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      Quote Originally Posted by ScottishBrick View Post
      Cause Ford is cheap and had a deal with kkk-borgwerner. Kinda like how the ďrĒ manifold saves supply chain money but thatís all itís good for.
      I keep seeing conflicting stuff on japanifold vs r manifold, some people say japan flows better, some people say it only sounds better and r flows better. Any objective data on it?

      Me: 2007 VR gt Slicktop Titanium Grey/Nordkap Wife: 2015 XC60 T6 AWD Ocean Race Past: 2006 V70 2.5T Willow Green/Oak, 2005 S60 2.5T AWD Silver/Black, 1991 745 White, 1982 242 GL Silver
      Me: 2007 VR gt Slicktop Titanium Grey/Nordkap Wife: 2015 XC60 T6 AWD Ocean Race
      Past: 2006 V70 2.5T Willow Green/Oak, 2005 S60 2.5T Silver/Black, 1991 745 White auto, 1982 244 Silver 4spd w/od

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    6. #74
      Senior Member JaredR's Avatar
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      Quote Originally Posted by tabormeister View Post
      I keep seeing conflicting stuff on japanifold vs r manifold, some people say japan flows better, some people say it only sounds better and r flows better. Any objective data on it?
      Dougy bench tested one years ago. There was discussion about another bench test happening. But it's also pretty obvious just visually.
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    7. #75
      Senior Member ScottishBrick's Avatar
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      Quote Originally Posted by tabormeister View Post
      I keep seeing conflicting stuff on japanifold vs r manifold, some people say japan flows better, some people say it only sounds better and r flows better. Any objective data on it?

      Me: 2007 VR gt Slicktop Titanium Grey/Nordkap Wife: 2015 XC60 T6 AWD Ocean Race Past: 2006 V70 2.5T Willow Green/Oak, 2005 S60 2.5T AWD Silver/Black, 1991 745 White, 1982 242 GL Silver
      Based on the firing order of Volvo 5 cylinder engines which is 1-2-4-5-3, the 2.5t manifold cannot out perform the Japanifold in the higher rpm range.

      With an 2.5t manifold the exhaust from cylinders 1, 2 & 3 is all routed through one runner. With a japanifold its cylinder 1 into 4 and cylinder 2 & 3 together, relatively separated exhaust pulses in firing order at that. The runners in the japanifold are better proportioned for 1 & 4 and 2 & 3 size wise. Japanifold is a 2-2-1 manifold, 2.5t is a 3-1-1 manifold. Interestingly volvo chose a 2-2-1 design for the RNC 5 cyl manifolds as well and ditched the 2.5t design.

      2.5 manifold was designed to save Ford money...2 lbs 1 oz of 304 stianless. Even at todays scrap prices thats a buck, the kind of "fat" that supply chain managers looooove to take credit for trimming.

      Now, real numbers.

      Japanifold is 10mm larger in diameter than a 2.5t manifold at the manifold to turbo transition, a constriction that simply does not make sense with the larger TD04HL housings and K24. IPD claims they found the "r" aka 2.5t manifold to spool 100 rpm faster. Considering ive never seen that test referenced in anything other than forum banter and its all of a 100 rpm that could be too easily manipulated by minute adjustments in wastegate preload, engine load ect.

      Of all the japanifolds ive harvested and sold, the worst warp we ever found was slightly less than 0.001". The average 2.5t manifold is about 0.015" and a lot of the ones from R cars and T5s are 0.030" or worse up to the point of not being able to be shaved flat again. Cyl 5 loves to lift off the head.

      Internal volume is obviously larger in the japanifold, I do not currently have a volumetric number on that but i should quantify it in the future.
      2003 V70 T5 - Mystic/Graphite - M56LK - 211k - K24/Greens/Do88/Quaife/SMF/P2R Clutch/DW300C/H&R/Bilstein TC/316mm & 308mm Brakes - SteveO Tuned
      1999 V70 T5 - Pewter/R Graphite & Alcantara - AW42 - 305k - Daily/Work Wagon
      1999 V70 T5 - Nautic/R Graphite & Alcantara - M56H - 177k - Rescued
      1999 V70 T5 - Emerald/Graphite - M56H - 119k - Garage Queen
      2000 V70 T5 - Mystic/Graphite - AW42 - 246k - Moms Unicorn
      2000 S70 GLT SE- Mystic/Graphite - AW42 - 218k - Sisters

    8. #76
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      Quote Originally Posted by ScottishBrick View Post
      Based on the firing order of Volvo 5 cylinder engines which is 1-2-4-5-3, the 2.5t manifold cannot out perform the Japanifold in the higher rpm range.
      Damn, ok sold. On my list.

      Me: 2007 VR gt Slicktop Titanium Grey/Nordkap Wife: 2015 XC60 T6 AWD Ocean Race Past: 2006 V70 2.5T Willow Green/Oak, 2005 S60 2.5T AWD Silver/Black, 1991 745 White, 1982 242 GL Silver
      Me: 2007 VR gt Slicktop Titanium Grey/Nordkap Wife: 2015 XC60 T6 AWD Ocean Race
      Past: 2006 V70 2.5T Willow Green/Oak, 2005 S60 2.5T Silver/Black, 1991 745 White auto, 1982 244 Silver 4spd w/od

    9. #77
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      And a japanifold makes the 5 cylinders sound much better also
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