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Thread: Andrew's 818S - LYTW8

  1. #481
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    New low mount turbo kit work has begun. This time with a single scroll EFR 7163 and external wastegate.






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  3. #482
    Senior Member Hobby Racer's Avatar
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    Looking good. I was linking of mounting small twin turbos on my H6 in a similar location one on each bank! Where are you sourcing the tubing and turbo flange?
    MK3.1 Roadster completed 2011
    818R built with EZ36R H6 completed 2018

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  5. #483
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    What's the reason for low mounting the turbo? Shorter exhaust plumbing before the turbo to reduce lag?

  6. #484
    Tazio Nuvolari wannabe Scargo's Avatar
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    Interesting. My plan for a low-mount is to put it in front since I'll have a fuel cell.

  7. #485
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    Quote Originally Posted by Hobby Racer View Post
    Looking good. I was linking of mounting small twin turbos on my H6 in a similar location one on each bank! Where are you sourcing the tubing and turbo flange?
    I've sourced flanges from all over the place. 1/2" 304 stainless machined to accept 1.5" schedule 10. One example:
    https://www.pandlmotorsports.com/sho...t-head-flange/

    Your choices for the H6 may be limited:
    https://www.racemufflers.com/Subaru-...-80047-shf.htm

    Sch 10 tubing can be found all over the place. Amazon, aceraceparts.com, Vibrant, etc.

  8. #486
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    Quote Originally Posted by lsfourwheeler View Post
    What's the reason for low mounting the turbo? Shorter exhaust plumbing before the turbo to reduce lag?
    Pretty much.

  9. #487
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    Quote Originally Posted by Scargo View Post
    Interesting. My plan for a low-mount is to put it in front since I'll have a fuel cell.
    That was last year's setup. Been there, done that.



    Packaging is not particularly fun. I had to move a frame cross brace. In the end you've got a heat source right by the low pressure passenger area. The low pressure sucks in heat from all sources. Even with exhaust wrap, extra aluminum heat shield, and turbo blanket the additional turbo heat was noticeable.

  10. #488
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    The manifold mock-up is almost complete. I need to tack up the turbo inlet pipe and v-band. Also need to weld in the wastegate. So close...

    The car has been running an equal length twin scroll setup since 2016. I think this being so uneven should bring back the boxer rumble.








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  12. #489
    Senior Member UnhipPopano's Avatar
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    How does your design take into account different thermal expansion related to different materials and different temperatures between the engine and the headers?

    https://www.engineeringtoolbox.com/l...ents-d_95.html

  13. #490
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    Quote Originally Posted by UnhipPopano View Post
    How does your design take into account different thermal expansion related to different materials and different temperatures between the engine and the headers?

    https://www.engineeringtoolbox.com/l...ents-d_95.html
    I was just talking with lance corsi about this. The flanges have enlarged holes. Slip joints or flex joints could be added. However, if you look at most sch 10 manifolds for Subarus, nothing more than enlarged holes are used.

  14. #491
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    Design is complete. The oil feed line will be re-routed so it is between the manifold and the engine. Now it's time to weld everything up.






  15. #492
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    Looks awesome and excited to hear the report on performance. It sure has to clean up the engine bay up top.

  16. #493
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    So much craftsmanship on this build! Really makes me miss my garage!

  17. #494
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    Thanks guys! It's getting close to roadster weather in Michigan. I need to keep cranking.

    At least the other cold weather project is back together. My EFR7163TS + AWIC setup in the Saabaru.










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  19. #495
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  21. #496
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    My 818 had its first start today on the new turbo. A few loose ends to button up and it'll be ready for tuning.



    The headlight modification is moving along too. The passenger side is ready for fiberglass.




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  23. #497
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    I looked back a few pages and didn’t see any mention, which headlight are you going with? I’m headed down that path now with the old nose, and I gotta say it looks way easier when the headlight is contained within one panel instead of where 3 meet. Definitely making me consider a clamshell.

  24. #498
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    Quote Originally Posted by Ajzride View Post
    I looked back a few pages and didn’t see any mention, which headlight are you going with? I’m headed down that path now with the old nose, and I gotta say it looks way easier when the headlight is contained within one panel instead of where 3 meet. Definitely making me consider a clamshell.
    2007-2008 Yamaha R1 Headlights.

  25. #499
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    Rethinking my headlight choice...







    Let me know what you think compared to the R1 headlights.

  26. #500
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    I like it! What headlight is this one?

  27. #501
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    Those are 14-15 Hyundai Tucson Headlights.

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  29. #502
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    Personally I prefer the smaller Yamaha lights, but everyone will differ I suppose.

  30. #503
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    It looks like it's sticking out too far. Will it pull in at speed?

  31. #504
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    Looks really aggressive, I like it.

  32. #505
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    Quote Originally Posted by Aero STI View Post
    2007-2008 Yamaha R1 Headlights.
    Have you checked the beam pattern with those mocked up? I had a pair of R1’s from that generation and it felt like a fairly narrow light spread. It was fine for a bike with HIDs installed but may leave you underwhelmed in a car. I’m sure they would look sharp in an 818 though!

  33. #506
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    Quote Originally Posted by Jake From State Farm View Post
    Have you checked the beam pattern with those mocked up? I had a pair of R1’s from that generation and it felt like a fairly narrow light spread. It was fine for a bike with HIDs installed but may leave you underwhelmed in a car. I’m sure they would look sharp in an 818 though!
    The beam pattern seemed good. And fairly bright with 55W halogen bulbs. I plan to throw in some high wattage HIDs.

  34. #507
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    Good call. 55W HIDs will make a huge difference. The halogen headlights were the first to go after the usual upgrades (levers, frame sliders, etc).

  35. #508
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    Roughing in the new R1 headlights...






  36. #509
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    I like it! I was wondering what a sugar-scoop headlight bucket would look like on these cars, kinda like the Datsun 240Z.

  37. #510
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    Headlight modification is nearly complete. Today I applied the first coats of slick sand.










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  39. #511
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    Such a huge improvement, great work.

  40. #512

    Yes, I love Technology
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    Has a 'vicious' look to it. Cool!
    Art Quillen

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  42. #513
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    Wicked......
    One thing....if it’s going to be registered they may probably want some kind of yellow side marker since the lights are encased and not visible from the side....don’t bring it up tho...
    Very nice work

  43. #514
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    Really making me re-think my headlight choice.

  44. #515
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    Not for the faint of heart, so I appreciate the positive feedback.

    Quote Originally Posted by Jetfuel View Post
    Wicked......
    One thing....if it’s going to be registered they may probably want some kind of yellow side marker since the lights are encased and not visible from the side....don’t bring it up tho...
    Very nice work
    Luckily it's already registered, I've had it on the road since 2015.

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  46. #516
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    I started blocking the front quarters and body working the windshield surround. The quarters are turning out super nice.




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