Turbocharging my F355 - Or how to remove any market value from your F355 remaining. | Page 9 | FerrariChat
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Turbocharging my F355 - Or how to remove any market value from your F355 remaining.

Discussion in '348/355' started by Markphd, Oct 23, 2015.

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  1. Markphd

    Markphd Formula Junior

    Mar 10, 2012
    713
    #201 Markphd, Apr 3, 2016
    I have been thinking about it... but I may have stumbled upon a more elegant solution.

    I still want to keep the exhaust equal length if possible and symmetrical until reaching the turbine inlet. I actually have a lot of room to work in there.

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  2. Markphd

    Markphd Formula Junior

    Mar 10, 2012
    713
    #202 Markphd, Apr 6, 2016
    Eh, not perfect, not performance related, but pretty good considering that I did it in an afternoon with a rattle can from Walmart.

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  3. gothspeed

    gothspeed F1 World Champ

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    #203 gothspeed, Apr 6, 2016
    As long as the 'bundle of snakes' are retained, there is not much difference in response time with either option .... so just do that which reduces heat to sensitive components and minimizes harsh bends in the tubing ..... :)
     
  4. ernie

    ernie Two Time F1 World Champ
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    #204 ernie, Apr 6, 2016
    Look good enough for factory work.
     
  5. Markphd

    Markphd Formula Junior

    Mar 10, 2012
    713
    #205 Markphd, Apr 6, 2016
    I keep trying to tell myself that... LOL, and intellectually, I know that you are right. It's the retarded/inept artist in me and the nth degree optimizer in me that wants me to shorten it every single inch possible.

    Equally stupid, is my desire to keep the pre-turbo runners the same length... as if it matters. Intellectually, once again, we are talking minuscule (if any) differences in the actual performance of the system (which considering that we are talking forced induction) amounts to noise at best.

    Still, I am attempting to build a system that I can be proud of. I could certainly build a system that would wow the Honda crowd, I can build a system that impresses the Miata crowd, but can I take it to a level that impresses those with more discerning tastes, the Ferrari crowd... I don't know and that remains to be seen.

    I am really digging the valve covers today BTW, they look really amazing right now compared to how they looked before.

    I just wish I could find some F'ing shielding gas without having to take a day off of work.
     
  6. Markphd

    Markphd Formula Junior

    Mar 10, 2012
    713
    #206 Markphd, Apr 6, 2016
  7. pat_t

    pat_t Rookie

    Jul 23, 2014
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    Leicestershire, UK
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    Patrick
    #207 pat_t, Apr 7, 2016
    Hi Mark,

    Some great work going on in this thread. Could I ask what your plans for upgrading the propshaft (transfer shaft) between crank and flywheel are? Or have you already upgraded it, and if so what material did you use?

    You might be interested but I am running a CWA200 electric pump on a F355 engine with aftermarket engine management (Pectel SQ6). I will be very interested to follow the remainder of your build. All the best in health to you.

    cheers,
    Pat
     
  8. Markphd

    Markphd Formula Junior

    Mar 10, 2012
    713
    #208 Markphd, Apr 7, 2016
    Actually, it was more of a downgrade ($200 vs $2500). I am using a 348 shaft currently. Although I have not attempted it yet, the trick from what I understand is to partially anneal the shaft so that it will not snap as easily. I suspect that repeated shock to the shaft work hardened the original shaft and then it predictably snaps in the same place. How is the CWA200 working for you?
     
  9. baschul

    baschul Karting
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    May 27, 2015
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    Brian S
    #209 baschul, Apr 7, 2016
    What color did you use from wal-mart?
     
  10. Markphd

    Markphd Formula Junior

    Mar 10, 2012
    713
    #210 Markphd, Apr 7, 2016
    Rust-Oleum American Accents 2x Ultra Cover
    #280716 Gloss Apple Red
     
  11. pat_t

    pat_t Rookie

    Jul 23, 2014
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    Patrick
    #211 pat_t, Apr 8, 2016
    The CWA seems to be working well, I don't have the PWM control over it that I'd like yet it's more of an on-off switch, but as I have fans on the radiator and oil cooler in my car cooling performance seems more than sufficient so far..

    The reason I ask about the shafts is that I have broken two in one month!! The first a F355 one with maybe 19000miles on it, the second a brand new 348 one direct from Ferrari. I had heard rumours about the annealing trick but I didn't try it.

    I'll warn you that I suspect the reason for my failures is the inevitable torsional spikes you get when mapping any again on aftermarket EFI for the first time. Repeated cranking, backfires whilst adjusting ignition and fuelling on the rolling road etc etc. In hindsight I'd have loved to set my engine up on a engine-only dynamometer, that way you know it's good before you ever load the gearbox.

    I'm now researching all available options for a "belt and braces" fix as I really don't want to ever have it fail again.
     
  12. Markphd

    Markphd Formula Junior

    Mar 10, 2012
    713
    #212 Markphd, Apr 8, 2016
    Last edited: Apr 8, 2016
    I think that before I go through a number of shafts (like you have) that I may spend time and effort to map it on an engine dyno, the problem of harmonic balance still remains, in either case, something needs to keep the motor in balance (which is the job of the damper in the clutch pack, so even an engine only dyno would lack the ability to deal with the torsional spikes and risk damage to the crankshaft as opposed to the propshaft).

    If I happen to break another shaft (after the two spares I ordered today), I will be having a run of them custom built, because I am not going to repeat the stupidity of doing this one at a time.
     
  13. Markphd

    Markphd Formula Junior

    Mar 10, 2012
    713
    #213 Markphd, Apr 8, 2016
    In other news... I finally got the tubing and welding supplies (including argon) today.... Let the fun commence. It's fabrication time after I finish my work for the naval war college.

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  14. baschul

    baschul Karting
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    #214 baschul, Apr 8, 2016
    Thanks. Looks great!
     
  15. Markphd

    Markphd Formula Junior

    Mar 10, 2012
    713
    #215 Markphd, Apr 10, 2016
    What made you decide on the Pectel SQ6? From everything I know it is a top notch choice. but I have never worked with one, because they are not very commonly used outside of racing circles (which I suspect is due to cost).
     
  16. Markphd

    Markphd Formula Junior

    Mar 10, 2012
    713
    #216 Markphd, Apr 10, 2016
  17. cf355

    cf355 F1 Rookie

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    #217 cf355, Apr 10, 2016
  18. SoCal1

    SoCal1 F1 Veteran
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    #218 SoCal1, Apr 10, 2016
    They look wonky like that

    needs re portioning :)
     
  19. Markphd

    Markphd Formula Junior

    Mar 10, 2012
    713
    #219 Markphd, Apr 10, 2016
    Ya, I think so too. Freaking ⅛ inch on each side at most is all I really needed.

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  20. cf355

    cf355 F1 Rookie

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    #220 cf355, Apr 10, 2016
    probable be easier to get some narrower tips .....rather than widen the bumper
    openings for the exhaust.
    nice tips though.
     
  21. cf355

    cf355 F1 Rookie

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    #221 cf355, Apr 10, 2016
    looks great :)
     
  22. taz355

    taz355 F1 Veteran
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    Grant
    #222 taz355, Apr 10, 2016
    I agree with Tim, but its your car Mark. Seeing as how most of us will not often be infront after the turbo install you may want to fit them back a bit more. Most people will have this view. Ha ha, cant wait.

    How about a custom bumber sticker that says "if you can see me its because i have not floored it yet."
     
  23. Markphd

    Markphd Formula Junior

    Mar 10, 2012
    713
    #223 Markphd, Apr 10, 2016
    I am pretty sure that I will modify the bumper openings in a tasteful manner (I have actually a reasonable means of accomplishing this I think) rather get narrower tips. The tips are really rather perfect and I had not seen anything nearly as nice that looked the part of the car. So, I will see if my idea to do it tastefully works out, if not, I will find another way. I was briefly thinking of an exit through the challenge grill, but I really want to use those tips. As for being in front, it's not going to be all that fast, mostly because I won't be running a lot of boost (and I am not an amazing driver either). I will conceed, I am hoping for a pretty good level of reliability.

    As usual, I am much better at disassembly than reassembly... LOL. I made short work of the old airbox mounting brackets today. I am working out how I want to mount the turbo still. I have a ton of room, I just have to commit to a direction now.

    I should just invite the stooges over, before I would know it the welder would be going and my fate would be sealed.
     
  24. INTMD8

    INTMD8 F1 Veteran
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    Jun 10, 2007
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    #224 INTMD8, Apr 10, 2016
    The tips, even from rear angle look way too big to me. Your car but I would run something smaller that fits in the existing opening to keep the proportions. JMO!
     
  25. jimmym

    jimmym Formula 3

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    #225 jimmym, Apr 10, 2016
    +1. I agree 100%. Tips other than OEM that look right are Tubi's or Capristo's which look slightly bigger. If it was my car I wouldn't go any bigger than that.
     
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