Question re:355 Engine Air Intake | FerrariChat

Question re:355 Engine Air Intake

Discussion in 'Technical Q&A' started by Ricard, Feb 13, 2006.

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  1. Ricard

    Ricard Formula Junior

    Jan 23, 2004
    867
    Donington Park
    Full Name:
    Richard C
    #1 Ricard, Feb 13, 2006
    I noticed recently that the rear quarter light engine air intakes on a couple of 5.2 355's simply act as feeds to the engine bay because the flexi-hose is attached below the opening. Whereas on a group of 2.7 cars I saw the intakes feed air into the airbox's as the flexi-hose is connected as you would expect on the back of the vent.

    Was just wondering if this was a 5.2 / 2.7 difference or a market (climate) difference? and why you think they are like this?

    I figure its either to get more cooling air into the engine bay, something to do with emissions or that the 5.2 dosn't like +ve pressure airbox's!?

    You can easily check by sticking your hand in the vent hole and feeling for the flexi-hose...

    Any ideas?
     
  2. Andi355

    Andi355 Formula Junior
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    Sep 26, 2005
    381
    #2 Andi355, Feb 15, 2006
    If you have a 5.2 ECU car and if you want to have 15 - 20 +hp then
    remove the air intake upwards behind the small window ( like the 2.7 car and
    the challenge cars have ) and install a GruppeM air ram system.
    You will hear the suck in noises and have a better throttle response.
    They changed it because of the noise and emission rules.

    Forza Ferrari

    Andi
     
  3. Ricard

    Ricard Formula Junior

    Jan 23, 2004
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    Richard C
    #3 Ricard, Feb 15, 2006
    Hmmm, tempting... :)
     
  4. k wright

    k wright Formula 3
    Silver Subscribed

    Feb 4, 2004
    2,251
    North East TN
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    Kent Wright
    #4 k wright, Feb 15, 2006
    I noticed the same thing. On my car one of the upper intakes feeds one air filter while the other filter is fed via the intake near the door handle. Can't remember which is which.

    ken
     
  5. Andi355

    Andi355 Formula Junior
    BANNED

    Sep 26, 2005
    381
    #5 Andi355, Feb 16, 2006
    You only have to produce an adaptor so that the air tubes can
    be fixed.
    It is worth doing.
    After laying the tubes upwards you have similar suck in noises like
    the 360 and you get some hp back from Ferrari's detuning.

    Andi
     
  6. lauris

    lauris Formula Junior

    Jul 27, 2005
    281
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    Scott Laurie
    #6 lauris, Feb 16, 2006

    can anyone,, (be bothered) please,
    to post photos of what to do !!!

    thanks
    scottie.
     
  7. Ricard

    Ricard Formula Junior

    Jan 23, 2004
    867
    Donington Park
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    Richard C
    #7 Ricard, Feb 16, 2006
    Last edited by a moderator: Sep 7, 2017
    So, if a 2.7 is like this - with the screw at the bottom of the pipe which I presume screws into the bottom of the vent. Then surely the 5.2 has the same setup BUT the screw is at the top of the pipe and still screws into the bottom of the vent.

    If thats the case can you swap the pipes over (left to right) so everything then lines up?
    Image Unavailable, Please Login
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  8. sirbob

    sirbob Formula Junior

    Sep 10, 2004
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    South Orange County
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    Jim
    #8 sirbob, Feb 16, 2006
    keep the pics coming guys...I'm all ears on this one
     
  9. Ricambi America

    Ricambi America F1 World Champ
    Sponsor Owner

    Dec 7, 2003
    16,250
    Winston Salem, NC
    #9 Ricambi America, Feb 16, 2006
    Last edited by a moderator: Sep 7, 2017
  10. Ricard

    Ricard Formula Junior

    Jan 23, 2004
    867
    Donington Park
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    Richard C
    #10 Ricard, Feb 16, 2006
    Hmmm x2 ... just had a "grope" around the engine bay and it appears the flexi-pipes travel under the quarter light vent holes and continue forwards someways. No-way they just "move up" into position. Also, looks like the vent holes are not circular but more of a semi-circle to allow the pipe to pass below them. Cant find anything inside the radiator intakes (doors) but I guess the pipes take their air from that direction.

    Has anyone actually performed the surgery to attach the 5.2 engines airbox's to the quarter light vent holes? ... looks (or feels) like a pain to me?
     
  11. Ricard

    Ricard Formula Junior

    Jan 23, 2004
    867
    Donington Park
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    Richard C
    #11 Ricard, Feb 16, 2006
    Last edited by a moderator: Sep 7, 2017
    Now I would hazard a guess that the flexi's on my 5.2 end up on this little critter (see diagram) and hence the airbox's get fed from the top section of the door vents. Which means the pipe is way to long to just re-connect. Dont fancy chopping it either ... (£322.90)

    There appear to be 3 types of flexi

    170084 x2 SUCTION DUCTING
    -Not for USA, CDN, AUS, J, SA and ZA-
    -Not for ABS BOSCH and 355 F1 cars-
    -Not for Spider-

    169759 x2 SUCTION DUCTING
    -Valid for USA, CDN, AUS, J, SA and ZA-
    -Not for ABS BOSCH and 355 F1 cars-
    -Not for Spider-

    170692 x2 SUCTION DUCTING
    -Valid for ABS BOSCH and 355 F1 cars-
    -Valid for Spider-

    It aint simple :( but then nothing ever is :)
    Image Unavailable, Please Login
     
  12. Andi355

    Andi355 Formula Junior
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    Sep 26, 2005
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    #12 Andi355, Feb 17, 2006
    If you want to change the 5.2 to the 2.7 upper air intake system
    you first have to produce an round adaptor. 5.2 cars ( only Berlinetta and GTS ) have behind the small window flattened not round air intakes.
    You first have to go to an mechanic to produce an adaptor and then
    shorten your tubes.
    The other way is to order the modified air intake system from IMOLA RACING.
    The system includes 2 adators and 2 motorsports tubes ( costs: 260 EURO ).
    www.imola-racing.de

    Regards,

    Andi
     
  13. lemon355

    lemon355 Karting

    Aug 8, 2009
    165
    Melbourne Australia
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    Peter Kay
    #13 lemon355, May 3, 2010
    And can we ask Andi is there anything we can do to improve the air intake on a 5.2 spyder?!!!
     
  14. Future ferrari collector

    Future ferrari collector Formula 3

    Oct 12, 2006
    1,795
    #14 Future ferrari collector, May 3, 2010
    Hi guys,

    Since we are on this topic, has anyone here used the Imola mods on their 355, ranging from the air intake, ECU etc? The 355 could do with a mid-life upgrade especially to the low-mid end torque. After all, she is one of the prettiest cars around and I'm sure that engine has a little more to give.

    So if anyone has done any of these mods to their car, some feedback would be great. Thanks.
     
  15. Future ferrari collector

    Future ferrari collector Formula 3

    Oct 12, 2006
    1,795
    #15 Future ferrari collector, May 3, 2010
  16. Mitch Alsup

    Mitch Alsup F1 Veteran

    Nov 4, 2003
    9,267
    #16 Mitch Alsup, May 3, 2010
    One can see big (8%-10%-ish) gains in the mid-range by using a 4-2-1 header system instead of the 4-1 header system. The trick, here, is to get the lengths and diameters correct so that one does not sacrifice anything on the top end for the gain in the mid-range. We have see a 20HP gain in the 4K-5K range with such a header in a challenge car (with no loss at the top end.)
     
  17. eulk328

    eulk328 F1 Rookie

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    #17 eulk328, May 3, 2010
    Can you provide a link to the exact page? I don't see it on their website.
     
  18. Ricard

    Ricard Formula Junior

    Jan 23, 2004
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    Richard C
    #18 Ricard, May 4, 2010
  19. eulk328

    eulk328 F1 Rookie

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    #19 eulk328, May 4, 2010
    Are there any photos of this? I could not find any and did not see any price of 260 Euros (perhaps you requested the price quote from them??)

    Did you do this modification?
     
  20. UConn Husky

    UConn Husky F1 Rookie

    Nov 11, 2006
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    #20 UConn Husky, May 4, 2010
    I did this mod, I have a thread in the 355 section that I'll post a link to if I can find it. Very worthwhile!
     
  21. eulk328

    eulk328 F1 Rookie

    Feb 18, 2005
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    #21 eulk328, May 4, 2010
    I remember the thread and definitely want to go that route. Just wanted to see (photos) of any ready-made pieces that are out there/for sale.
     
  22. UConn Husky

    UConn Husky F1 Rookie

    Nov 11, 2006
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    #22 UConn Husky, May 4, 2010
  23. Future ferrari collector

    Future ferrari collector Formula 3

    Oct 12, 2006
    1,795
    #23 Future ferrari collector, May 23, 2010

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