95 B cats and y-pipe | Page 2 | FerrariChat

95 B cats and y-pipe

Discussion in '348/355' started by INTMD8, Feb 27, 2015.

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  1. SoCal1

    SoCal1 F1 Veteran
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    Jun 14, 2011
    8,562
    SoCal LA/OC/New Mexico
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    Tim Dee
    You must be very patient. I need to stop drinking coffee and smoking crak a week before welding

    Great job for sure
     
  2. drbob101

    drbob101 F1 Rookie
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    Nov 26, 2012
    3,814
    Tinton Falls, NJ
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    Bob Ferraris
    Will you do any type of playing to that Jim?
     
  3. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,574
    The Brickyard
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    The Bad Guy
    Great welds!
     
  4. ernie

    ernie Two Time F1 World Champ
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    Nov 19, 2001
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    The Bad Guy
    Speaking of, did you ever get started on your exhaust yet?
     
  5. SoCal1

    SoCal1 F1 Veteran
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    Jun 14, 2011
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    Tim Dee
    #30 SoCal1, Mar 19, 2015
    Last edited: Mar 19, 2015
    Yup. got as far as the tubing, 4 random technology cats a 100 and 300 cell set so I can swap easy

    Just need some time I am at busy season and have my 1000 car Hemi show this weekend
    After that play time

    Also I got intimidated by INTMD8's welds, I been welding my entire life and can't do it like i used too

    Getting old sucks the big one
     
  6. INTMD8

    INTMD8 F1 Veteran
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    Jun 10, 2007
    6,488
    Lake Villa IL
    Thanks guys :) Tim, do you have a good shield? Being able to see good makes a world of difference. I use an Optrel.

    Bob. Right now I'm going to run them as-is. Next engine out I will build headers for it as well and may ceramic coat everything to match at that point.
     
  7. SoCal1

    SoCal1 F1 Veteran
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    Jun 14, 2011
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    Yes I have a few shields and use a helper lens LOL
     
  8. INTMD8

    INTMD8 F1 Veteran
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    Jun 10, 2007
    6,488
    Lake Villa IL
    #33 INTMD8, Mar 23, 2015
    Last edited by a moderator: Sep 7, 2017
  9. marinelo

    marinelo Formula Junior

    Jan 18, 2004
    309
    Toronto
    Full Name:
    Rob
    ok Jim you know we're going to have to hear this when your finished right?
     
  10. INTMD8

    INTMD8 F1 Veteran
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    Jun 10, 2007
    6,488
    Lake Villa IL
    Yes! :) I'll put the go-pro on it as soon as the road salt is washed away.
     
  11. group77racing

    group77racing Formula Junior

    Sep 5, 2006
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    Never Duplicated
    forecast is for rain tonight...
     
  12. INTMD8

    INTMD8 F1 Veteran
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    Jun 10, 2007
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    #37 INTMD8, Mar 24, 2015
    Last edited by a moderator: Sep 7, 2017
  13. GTSNJ

    GTSNJ Formula Junior

    Jan 18, 2015
    478
    Nice work and fab. It sounds great, from the photos above the capristo unit looks quite close to the clutch cover but with the whole thing together the tips seem to protrude enough. From the video, it sounds like the typical flywheel rattle on shutdown at the end? Maybe check that kluber grease....Also noticed it has a similar idle to my 95 car, they certainly don't idle the same way as a 5.2 .

    Now I want a capristo to replace my challenge unit. lol
     
  14. tres55

    tres55 F1 Rookie
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    Sep 18, 2012
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    Anyone want to buy my tubi? lol
     
  15. INTMD8

    INTMD8 F1 Veteran
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    Jun 10, 2007
    6,488
    Lake Villa IL
    Thanks! The muffler case is quite a bit thicker than original (and the challenge exhaust that was on it). Front of the case is only about .125 away from a nub on the clutch cover (though that should increase slightly with heat in the system). Can't move it further back as I already had to space the heat shield back for clearance.

    Not sure on the flywheel rattle. I hadn't noticed it but will give it a listen next time.

    Agreed on the 2.7 idle. It does seem to have more of a rolling/cammy idle than my previous 5.2 car. I would think that's expected with 2 separate engine managment systems. With proportional fueling driving o2 switching I'm sure it could get into a rhythm being not sync'd together.
     
  16. GTSNJ

    GTSNJ Formula Junior

    Jan 18, 2015
    478
    My f1 made the rattle once in a while on shutdown. It apparently got a new clutch right before I got it from a dealer so I didn't worry about it. The 95 doesn't make the rattle. Apparently it also had the flywheel serviced so maybe re greased. In any case remove the two 10 mm bolts on the bottom pumpkin and have a look in there.

    The 2.7 idle for me smoothed out completely when I ddisconnect both 02 sensors and started her up... Dave helms says it's a characteristic of the two separate bank setup. Mine has the same hop ...burble at idle on occasion. It runs perfect so I just accept it as normal.
     
  17. phrogs

    phrogs F1 Veteran
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    Apr 13, 2004
    7,113
    Michigan
    Dual mass flywheels tend to rattle.
     
  18. INTMD8

    INTMD8 F1 Veteran
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    Jun 10, 2007
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    #43 INTMD8, Aug 12, 2017
    Last edited by a moderator: Sep 7, 2017
  19. Dave rocks

    Dave rocks F1 World Champ
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    Nov 23, 2012
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    #44 Dave rocks, Aug 12, 2017
    Last edited: Aug 12, 2017
    No big surprise here - as usual, your work is b*tch'in Jim :)
     
  20. INTMD8

    INTMD8 F1 Veteran
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    Jun 10, 2007
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    Lmao, thanks Dave :)
     
  21. ShineKen

    ShineKen F1 World Champ
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    Aug 3, 2007
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    Nostradamus
    Love the custom look! Very curious to know your thoughts on the differences in sound.
     
  22. INTMD8

    INTMD8 F1 Veteran
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    Jun 10, 2007
    6,488
    Lake Villa IL
    Thanks Ken.

    The difference in sound is......not much at all. Thought it would be a big difference and maybe it would be compared to stock cats.

    Compared to the metallic cats I had on there, maybe 5% louder?

    I was in a rush when I got home so didn't even open the engine lid to see if temps seemed any different. (though I suspect that won't be a huge difference either)
     
  23. eulk328

    eulk328 F1 Rookie

    Feb 18, 2005
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    I would think you would have a decent reduction in temperature but if you don't do a "proper" measurement before and after it will be hard to tell. Then again the catastrophic converters probably have some some heat shielding and the test pipes don't. In any event, you'll definitely be on the winning side (lower temps) with test pipes if your car starts running rich for some reason.
     
  24. INTMD8

    INTMD8 F1 Veteran
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    Jun 10, 2007
    6,488
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    Agreed! Just curious to see if it will -seem- like less of an inferno but no, I didn't take any measurements.

    No heat shielding on the converters.
     
  25. Drock28

    Drock28 Formula 3

    Jan 13, 2013
    1,429
    Montreal
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    Tony
    were you running your custom ypipe before putting in the test pipes..?

    if I recall you had the ypipe in with the high flow cats..

    so that's why maybe you feel not much difference in sound..
    meaning on bypass.. most of the volume/pitch was produced from the y-pipe and you were already getting improved lower rpm/idle sound with the hyflow cats..

    now with the test pipes.. there is not much change..
     

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