New EFI Manifold Drop | FerrariChat

New EFI Manifold Drop

Discussion in '308/328' started by smg2, Jan 21, 2022.

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  1. smg2

    smg2 F1 World Champ
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    Apr 1, 2004
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    After the development of the intercooled manifold, it was decided to see what could be done for NA builds. With that in mind some changes were made, and simplification of the manifold was undertaken. it's a single piece construction that will be 3D printed in carbon nylon and epoxy infused. Our printer is bringing new materials for the automotive market for working finished parts... this new manifold weighs in at just under 2lbs.

    For the moment all I've got to share is screen shots of the model.

    The reason for this manifold is to simplify the EFI kit going forward. The factory parts and throttle body sit in the way of any fuel rails. Historically I've been making fuel rail tubes by hand that mimic the CIS system. unfortunately it's very time consuming and requires a lot of machined parts and fixturing for the brazing, with the old timers that were doing the brazing no longer around and the cost of mfg climbing it becomes cost prohibitive. The other reason is the throttle body, this manifold uses a mounting face that can support up to a 2000CFM TB as used on the supercharged builds. flow restriction is no longer an issue. The interior volume and shape along with interior trumpets also improve air flow and runner length.

    Pictures! I've got a stock TB in one pic for comparison. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
     
    derekw, Brian Harper and GordonC like this.
  2. smg2

    smg2 F1 World Champ
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    Pero, 308Dadoo, GordonC and 1 other person like this.
  3. AZDoug

    AZDoug Formula 3

    Jun 17, 2009
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    That is just way too cool!.

    I will most likely never convert my carb'd 2v motor to EFI, but a t-body/manifold like that that mimics a carb'd airbox would be even cooler!.

    The nice thing about 3D printing, is you can make very low number runs of parts.

    Yeah, there is still engineering time, but its not like making metal stamping molds, or CNC hogging some complex shape out of a big block of aluminum or steel.

    Doug
     
  4. smg2

    smg2 F1 World Champ
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    Thanks.
    Interesting.. The 2v has the TWM option for carb looking efi. But I get what you're proposing. Wouldn't be difficult actually. The linkage would be interesting though as 90* turns are always PITA.

    The other demand is for QV carb conversion. And for that....I have an incoming option.
     
  5. AZDoug

    AZDoug Formula 3

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    Since you would be using one T-body on the inlet, and the main throttle linkage is a cable, and cable easily bend, I don't see the problem in this??? You would need an extension, but that is a piece of cake.

    The reason i say that a manifold like this would be the way to go, is you have much easier time of getting a MAP reading, than with the individual throttle bodies. Plus you aren't taking all your power brake vac off one intake bore.

    Doug
     
  6. smg2

    smg2 F1 World Champ
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    This manifold fits all 308 flavors. Most tend to want ITB, carb or TWM. This is geared for those with CIS looking to go to EFI. the layout here is to utilize the factory CIS body, remove the FD, plate it off. Then this attaches via a tube to the stock setup and the factory air filter and box is retained. One could also remove it all and just plumb in a cone filter if they want. But the goal here is to retain a close to factory look.

    What you proposed makes sense for carb to EFI, but oddly we don't get that request, like ever.

    Cable run isn't the difficult part, it's the linkage and getting it all to fit over the T-stat and coolant pipes. It's doable I'm sure.

    I've got a number of designs and products that have been sitting awaiting for additive mfg to improve on the material end, now that it is we can finally start to bring many things forward. Hopefully costs continue to drop as well.
     
  7. AZDoug

    AZDoug Formula 3

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    That is because carb'd cars will outperform price wise, the later CIS cars. They are also technically easier to work on, being more primative.

    I just thought it would be cool, like i said, i would probably never do it, but if i did, i wouldn't throw my carbs and linkage out as they could be reinstalled.

    The reason to go EFI, today, is modern fuel low BP, and resultant carb perc and flooding. On something one drives every couple weeks, its livable, if the car was a daily driver with multiple shutoffs and heat soak and flooding every day, going to EFI would be a no brainer.

    I don't ever recall carb perc in the early 1980s when i did drive my 308 (or any other carb car) everyday. Now, its a certainty

    Doug
     
  8. Alex N

    Alex N Karting

    Mar 29, 2021
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    Vincent Napoliello
    This would be great for my application that we spoke about on a question about efi that I asked yesterday, when do you think you’ll be ready ship? Approximate price?
     
  9. smg2

    smg2 F1 World Champ
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    Not sure on shipping times at the moment. Usually a couple weeks to get things printed. Cost? I'd have to check with Nick, he handles the sales, costs etc.. I'm just the engineer playing with the slide rule.

    This manifold was born out of the intercooled version. I'm working on finalizing the details for that version as well to be printed, last go around it was cast and that was a massive headache and very expensive. That version uses laminova cores on the inside. Might have a thread somewhere about it..
     
  10. Alex N

    Alex N Karting

    Mar 29, 2021
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    Vincent Napoliello
    Yes I saw that thread, I would need this in the intercooled version, I’ll have to reach out to nick, thx
     

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