95 Berlinetta weight reduction and modifications. | Page 13 | FerrariChat
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95 Berlinetta weight reduction and modifications.

Discussion in '348/355' started by INTMD8, Mar 25, 2017.

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  1. INTMD8

    INTMD8 F1 Veteran
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    #301 INTMD8, Jun 10, 2024
    Yes, and they have a 10mm head as well. (Porsche)
     
  2. bobzdar

    bobzdar F1 Veteran

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    #302 bobzdar, Sep 14, 2024
    It's tricky, there are two ways for a good launch. If you have a fresh ish clutch, 4000rpm and release it quickly but not a dump. Clutch will slip for a second and grab and you'll get a really good tire spin free launch. Not great for the clutch and if you get it wrong you smoke it. Other is 5500 rpm and dump it with l wheel spin, let it drop to 4k and hook. Both will give you a sub 5 0-60... The latter is more fun and looks/sounds cooler but I don't know if I'd do it on a prepped track. It could also depend on tires, some do well with some slip and others don't.
     
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  3. INTMD8

    INTMD8 F1 Veteran
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    #303 INTMD8, Nov 27, 2024
    It made 340rwhp 250rwtq before all of this. The plan of course was what I quoted above. (and header lengths were focused on the same).

    The results are what I was intending and the numbers are much better than I expected.

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  4. JoeCab

    JoeCab Formula Junior
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    #304 JoeCab, Nov 27, 2024
    So: + 32.67 rwhp and only - 3.7 rwtq?

    That sounds like a fantastic trade-off to me.

    How does it feel? I would imagine that much of a high-rpm power bump is very noticeable.
     
  5. 308 GTB

    308 GTB F1 World Champ
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    #305 308 GTB, Nov 27, 2024
    I've got to get my car on a Dynojet again. This is what I got on 4-25-13 with one faulty fuel injector and one of my OEM exhaust manifolds which was leaking at the time...


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    Since then, all fuel injectors were serviced and calibrated and the OEM headers were replaced with tubi exhaust manifolds.
     
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  6. Targatime

    Targatime Formula 3

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    #306 Targatime, Nov 27, 2024
    Very nice. Did this involve remaping the ECU? or is this stock tune?
     
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  7. ShineKen

    ShineKen F1 World Champ
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    #307 ShineKen, Nov 27, 2024
    STOCK 2.7 ECU ;)
     
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  8. 308 GTB

    308 GTB F1 World Champ
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    #308 308 GTB, Nov 27, 2024
    The ECUs were remapped and the redline raised to 9,000. I forgot to mention that the catalytic converters were gutted prior to my purchasing the car.


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  9. INTMD8

    INTMD8 F1 Veteran
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    #309 INTMD8, Nov 27, 2024
    It feels amazing, I'm super happy with it.

    Part of it would be due to the new weight. (I need to work on corner weights next) And paint the hood.

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  10. INTMD8

    INTMD8 F1 Veteran
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    #310 INTMD8, Nov 27, 2024
    Yeah I was hoping to do the same but was unable to get Felix to send me chips with a higher rev limit.

    I'll probably address engine management but it's been so long I just wanted to get it together and running.
     
  11. MAD828

    MAD828 F1 Rookie

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    #311 MAD828, Nov 27, 2024
    Congratulations on a fabulous outcome!
     
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  12. INTMD8

    INTMD8 F1 Veteran
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    #312 INTMD8, Nov 27, 2024
    Thank you!
     
  13. bobzdar

    bobzdar F1 Veteran

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    #313 bobzdar, Nov 28, 2024
    372 rwhp? That's stock f430 territory...
     
  14. INTMD8

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    #314 INTMD8, Nov 28, 2024
    F430 would be much higher I think but no surprise there.
     
  15. bobzdar

    bobzdar F1 Veteran

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    #315 bobzdar, Nov 29, 2024
    Highest I've seen for a stock f430 is ~390rwhp.
     
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  16. ShineKen

    ShineKen F1 World Champ
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    #316 ShineKen, Nov 29, 2024
    F430 isn’t 2800 lbs either :).
     
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  17. INTMD8

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    #317 INTMD8, Dec 21, 2024
    A few more things if interested, here is the inlet trumpets after porting. They were originally a bit smaller than the throttle bodies and had less than ideal transition from the top to bottom piece. Couldn't make them any bigger without the flanges probably cracking off. Had to enlarge the rubber gasket openings as it is.

     
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  18. INTMD8

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    #318 INTMD8, Dec 21, 2024
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  19. INTMD8

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    #319 INTMD8, Dec 21, 2024
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  20. flat-12

    flat-12 Formula Junior

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    #320 flat-12, Dec 21, 2024
    Most owners would be happy with 330 hp
    How did you notice that one of your injectors was faulty? I‘m interested because I never checked mine. New ones are not available and I don‘t know the quality of the aftermarket „rubber“ parts. So still running the old injectors and never checked them … i feel guilty
     
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  21. INTMD8

    INTMD8 F1 Veteran
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    #321 INTMD8, Dec 21, 2024
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  22. INTMD8

    INTMD8 F1 Veteran
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    #322 INTMD8, Dec 21, 2024
    Also would add that the wide open throttle air fuel ratio previous to the most recent work was a bit lean up to 6500rpm or so.

    After injector cleaning the new dyno results show nearly perfect air fuel ratio, despite the modifications.
     
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  23. 308 GTB

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    #323 308 GTB, Dec 22, 2024
    Last edited: Dec 22, 2024
    I had a couple of hydro-lock episodes which prevented the engine from turning over during start-up. We were able to remedy this by putting the car into 5th gear and having my tech crew push my car forward until it overcame the resistance I felt. Then it started normally.

    Having indwelling fuel pressure gauges at the time helped my technician isolate the affected cylinder bank.

    I now have a single heavy-duty Aeromotive fuel pressure regulator with an indwelling FPR...


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  24. fatbillybob

    fatbillybob Two Time F1 World Champ
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    #324 fatbillybob, Dec 22, 2024
    I have been including fuel injector service from RC engineering every 5 years during my major service to get ahead of any fuel mixture related problems.
     
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  25. 308 GTB

    308 GTB F1 World Champ
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    #325 308 GTB, Dec 22, 2024
    FBB,

    I've added regular fuel injector cleaning and calibration Q5 years to my car's service routine too.

    Barry
     
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