DIY Full Race 3" Catback installation on SI sedan (56k/3G beware, many photos)

Discussion in 'Intake & Exhaust DIY' started by mongoose221, Aug 8, 2012.

  1. mongoose221

    mongoose221 Well-Known Member

    Messages:
    406
    Location:
    middletown, NY
    Hey guys, sorry this took so long to get posted, just was very busy all weekend (death in the family), anyway, on to the posting.

    disclaimer: the problems I ran into during this may or may not be had by others, I just feel the urge to include every little issue I ran into to help others in case they have the same. Any questions, feel free to PM me.

    This is a catback installation, and while every exhaust is different, they are, in general, basically the same (the removal of the stock catback system is identical).

    Tools Needed:

    -a way to safely lift the car (i used 2 ramps for the rear, and jackstands up front, you may also use a lift, or other methods, either way, SAFETY is the key, you will be crawling under your vehicle, and putting plenty of force into these bolts to remove and install them, the vehicle MUST BE SECURE)

    -12mm wrench (i recommend a ratcheting box end and a heavy duty shallow socket, and a heavy duty deep socket)
    -14mm wrench (again, same as above)

    Tools Recommended additionally to make your life easier:

    -cheater/breaker bar for your wrench/socket (those cat bolts are on there like a mother******)
    -PB blaster (pb nut blaster/etc is a liquid lubricant sprayed onto stuck on nuts/bolts... i love the stuff, google it!)
    -gloves (rubber/latex or mechanics gloves, don't want no fingerprints on that fly exhaust!)
    -goggles/safety glasses (you will be UNDER a dirty vehicle, you don't want junk in your eyes)
    -lubricant (for the rubber hangars)
    -xacto knife/box cutter (to trim the cat gasket)
    -patience and a strong arm!!

    [​IMG]
    box has arrived!

    [​IMG]
    another box shot (that sounds dirty)

    [​IMG]
    packed nicely

    [​IMG]

    [​IMG]
    in the bags

    [​IMG]
    out of the bags... ooo shiny!

    [​IMG]
    detail of exhaust tip
     
  2. mongoose221

    mongoose221 Well-Known Member

    Messages:
    406
    Location:
    middletown, NY
    [​IMG]
    ^safety first (jack stands and ramps)

    [​IMG]
    ^these are the 12mm springbolts hold on the axleback portion of the exhaust, remove these

    [​IMG]
    ^ a shot of the midpipe portion

    [​IMG]
    ^ rubber hangers (these things are the DEVIL)
    remove these however is easier for you (I popped the muffler hangers OUT of it, then removed it)
    remove the muffler/axleback portion

    [​IMG]
    ^ a shot of the resonator after the axleback is removed

    [​IMG]
    ^ closeup of the springbolts and the wrench, you will not need these (unless you are going to return to stock later, i suggest saving them)
    [​IMG]
    ^ it was hot out (95+) so i made some shade

    [​IMG]
    ^ makeshift shade detail

    [​IMG]
    ^ detail of the muffler/axleback after removal

    [​IMG]
    ^ closeup of the rubber hanger on the midpipe, DON'T remove this until you unbolt the cat flange, it'll help keep the exhaust steady until then =D
     
  3. mongoose221

    mongoose221 Well-Known Member

    Messages:
    406
    Location:
    middletown, NY
    [​IMG]
    ^ -14mm cat nuts. (there are 3) remove these and SET ASIDE for later use

    [​IMG]
    ^ -pic of the open cat after midpipe removal

    [​IMG]
    ^ -midpipe and axelback after removal

    [​IMG]
    ^ -these are the 3 hangars in order from L->R they are Rear, Resonator, Midpipe

    [​IMG]
    -gloves (don't want fingerprints!)

    [​IMG]
    ^ -install these rubber hangars, take note of the direction of the one on the resonator

    [​IMG]
    ^ -closeup of the welds, purdy!

    [​IMG]
    -[NOT SHOWN] hang the midpipe by it's two rubber hangars, then slide the clamp over the cat flange pipe, then slide that pipe into the midpipe, hang the axelback/muffler by the rubber hangars, do NOT install any bolts until this is done.
    -[NOT SHOWN] place the 3" gasket provided by Full-Race over the studs on the cat converter, then slide the flange over the studs (my gasket was a little snug, i had to slice the holes about 1-2mm then wriggle them onto the studs), do NOT put the nuts on yet
    -loosely put the nuts onto the cat studs just enough so they don't strip off when you wriggle the midpipe into place

    [​IMG]
    ^ -closeup of the cat flange pipe slid into the midpipe

    [​IMG]
    ^ -view of the midpipe

    [​IMG]
    ^ -view of the midpipe/cat

    [​IMG]
    ^ -view of the midpipe/axelback connection, you can see the flange

    -[NOT SHOWN] insert the 3 bolts provided by full race into the axelback/resonator flange, with a 3" gasket provided by Full Race between
    -[NOT SHOWN] tighten all nuts/bolts down on the cat flange and on the axelback flange, ALL are 14mm at this point (full race provides 14mm bolts/nuts)
    -slide the slip-clamp over the midpipe-cat pipe region and tighten until it is seated properly, tightening the 14mm bolt (the picture is above of this clamp)

    -[if necessary] slide/adjust the rubber hangers to desired position (this is a PAIN IN THE ARSE TRUST ME) and bend the heatshield as necessary

    note: my heatshield did not need to be removed, i only gently bent it by hand while reaching around the midpipe, some people claim to have had to remove it and hammer it flat in areas, i did not need to

    any questions feel free to PM me, and if you wish for any more pictures, i'll be sure to take some, the last 2 steps did not have pictures due to my camera battery dying, but i will get some if you guys wish =D


    View: http://www.youtube.com/watch?v=3oklYqAnJOs

    hope this helped
     
  4. webby
    • Staff
    • 2019 Toys For Tots

    webby Administrator

    Messages:
    50,879
    thank you for the diy! Love the little shelter you made :nerd:
     
    MrsJrotax101, redsfan and mongoose221 like this.
  5. mongoose221

    mongoose221 Well-Known Member

    Messages:
    406
    Location:
    middletown, NY
    thanks webs!! it was hotter than h*ll outside that day... i lost 9lbs sweating
     
    mark magnaan likes this.
  6. ridethesky84

    ridethesky84 Well-Known Member

    Messages:
    181
    Location:
    USA
    Vehicle Model:
    Civic lx
    Body Style:
    coupe
    Awesome DIY!!
     
    mongoose221 likes this.
  7. Kojack021

    Kojack021 Well-Known Member

    Messages:
    35
    Location:
    Miami, Florida
    So how do you like the exhaust? How is the noise level inside?
     
  8. mongoose221

    mongoose221 Well-Known Member

    Messages:
    406
    Location:
    middletown, NY
    noise level is excellent, a bit drony the first week or so, but after the exhaust has burned in a bit it's excellent. loud enough when i lay on it, not too loud when you're just cruising... only "overly loud" bit is during engine braking it's very loud in the cabin, other than that, i love it and can't wait to mate it to the 3" downpipe with flashpro (full race DP) when it is released
     
  9. MrsJrotax101
    • Staff
    • Supporting Member

    MrsJrotax101 Administrator

    Messages:
    25,496
    Wow this is great! Love your shelter and the vid is awesome. Love watching the wheels spinning in the air :rotfl:

    Sorry about your loss :sadwavey:
     
    mongoose221 likes this.
  10. mongoose221

    mongoose221 Well-Known Member

    Messages:
    406
    Location:
    middletown, NY
    thank you for your condolences. i will pass them on to my girlfriend (it was her grandfather), anyway, the wheels were lolz i didn't realize until i watched the video, because i was revving up on jack stands up front, ramps in the rear. the shelter was necessary i was dying of heat... i weighed myself that evening, i dropped like 8lbs. haha
     
    MrsJrotax101 likes this.
  11. xXBob RossXx

    xXBob RossXx Well-Known Member

    Messages:
    266
    awesome, what is the stock diameter size. they look almost the same
     
  12. mongoose221

    mongoose221 Well-Known Member

    Messages:
    406
    Location:
    middletown, NY
    2.25" in most places, though it isn't uniform and necks down to 2.15" in some areas i believe
     
  13. JonnyRotten

    JonnyRotten Well-Known Member

    Messages:
    1,673
    Location:
    Mississauga, Ontario, Canada
    Vehicle Model:
    Civic Si
    Body Style:
    coupe
    Thanks for putting the DIY together for the 3" FR exhaust.
    When's the DIY shelter build coming out? :bananapoke:
     
    webby and mongoose221 like this.
  14. mongoose221

    mongoose221 Well-Known Member

    Messages:
    406
    Location:
    middletown, NY
    lol jonny. umm it's pretty stadard "fort fare" just think back to when you were a child... anchor a big blanket 2-3' off the ground and crawl under =D
     
    JonnyRotten likes this.
  15. fritz

    fritz Well-Known Member

    Messages:
    457
    Location:
    atlantic city, nj
    Vehicle Model:
    civic si
    Body Style:
    coupe
    :coolpics: nice DIY , I might have missed it but how long did the build take? Also did you ever get the DP to go with the exhaust?
     
    mongoose221 likes this.
  16. mongoose221

    mongoose221 Well-Known Member

    Messages:
    406
    Location:
    middletown, NY
    was waiting on the DP from FR to come out. it just did, i might pick it up soon. then i'll get FP, intake, a tune, and a small drop in the ride height is what i'm aiming for. : )
     
    fritz likes this.
  17. Gorrila88_13si

    Gorrila88_13si Well-Known Member

    Messages:
    128
    Wow great DIY, I love how you made the shade :rotfl: :rotfl: :coolpics: :thumbsup:
     
    mongoose221 likes this.
  18. fritz

    fritz Well-Known Member

    Messages:
    457
    Location:
    atlantic city, nj
    Vehicle Model:
    civic si
    Body Style:
    coupe
    Did you ever get the dp? Mine came in the mail the day before yesterday. I just have to install it. I already put on my full race cat back exhaust, and I love it! It sounds sweet I can't wait to get the do in next
     
    mongoose221 likes this.
  19. mongoose221

    mongoose221 Well-Known Member

    Messages:
    406
    Location:
    middletown, NY
    thanks man : )

    didn't get it yet, got hit with some HARD bills, and life > downpipe unfortunately. hoping to order it in the near future though. waiting to afford DP and flashpro and have vit tune them both at once
     
    fritz likes this.
  20. Yanimoe

    Yanimoe Member

    Messages:
    7
    Location:
    Philadelphia, PA
    Vehicle Model:
    Civic Si
    Body Style:
    Sedan
    Excellent source to prepare myself for my "project" I'm doing today.

    I'm planning in taking pics "before" and "after" installing the "Skunk2 Header" and the "Invidia Cat Back Exhaust System".

    Definitely, my pics would not be as detailed as the one "Mongoose221" provided here, but I will do my best for anyone's future reference, just like I referenced the ones provided by "Mongoose221".

    Wish me luck, until then...
     
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