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Self ported blower pic's and numbers

Discussion in 'Engine/Tuning' started by Posi, Dec 21, 2007.

  1. SilverCobra7

    SilverCobra7 Philippians 4:13 Established Member

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    You could achieve those numbers on 91 octane... Check out my sig!
     
  2. musclefan21

    musclefan21 Well-Known Member Established Member

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    Great thread!! Brian is the man.

    I just bought a stieg stage 3 ported blower from a friend. I was wondering if I could go ahead sand the inlet down (800, 1000, 2000) to make it perfectly smooth? I am not sure if I would be hurting the port job done by stieg by doing this.
     
  3. RussZTT

    RussZTT Active Member Established Member

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    No, you will not hurt anything by doing so. Since the inlet isn't alot of surface area I doubt very seriously you will see any gains by doing that.
    Post pictures of what the inlet looks like now. I bet we can guide you on opening it up little more if you want to see gains.
     
  4. musclefan21

    musclefan21 Well-Known Member Established Member

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    I don't want to mess it up. This is stieggy stage 3 ported blower.

    Here is the inlet. It looks a bit rigid, and I wanted to make it smooth as glass for a hope of a little better flow.

    20130602_165102_zps1355506a.jpg

    20130602_165114_zps8c67e951.jpg
     
  5. RussZTT

    RussZTT Active Member Established Member

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    Its funny to see Steig doing the lead in's now. When Brian and I were talking one day I came up with this and sent this pic to him asking if he thought this would help.
    finishedraceport013.jpg
    I don't know how many years ago I sent that.

    You wont hurt it if you opened it up more. You can see where the floor can be lowered. Port match it with the gasket but not only in the opening but all the way.

    Here was mine before polishing the inside
    P6245783.jpg

    I lowered the lead in's to the middle of the bearing, not shown in this pic
    P6245779.jpg
     
  6. Othic

    Othic Member Established Member

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    Started my port. What tool are you guys using to grind down the lead ins?
    941441_10151411948221497_826397452_n_zpsc8b6b5eb.jpg
     
  7. musclefan21

    musclefan21 Well-Known Member Established Member

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    Guys, once again, I have a stage 3 port from steggy and wondering if I could do anything to do the inlet to increase the performance even one bit before putting this on my car. Because once she is on the car, I wont bother to do anything else to it.

    I will be upper only.
     
  8. LS1toSVT

    LS1toSVT New Member Established Member

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    Looks like russztt already answered you.
     
  9. RussZTT

    RussZTT Active Member Established Member

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    That's what I was thinking.:lol1:
     
  10. fs308

    fs308 4v noob Established Member

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    can you repost these pictures? i plan on starting my own home port and trying to get all the information i can
     
  11. Jensanity

    Jensanity New Member Established Member

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    I'll be giving this a shot myself in the next few weeks. Just read through 26 pages haha. Want to see if I have the general idea down correctly:
    -open up throttle body openings at the bulk of material in the center
    -cut/grind the knub off
    -sand/smooth everything
    -Port plenum first and open it up as much as I can
    -Cut gasket to match and then use gasket to mark blower inlet. Slightly bigger is better than slightly smaller
    -cut down egr hump
    -cut down the "floor"
    -do some cutting on the roof before rotors
    -take down the lead ins on both sides(can go about halfway down the bearings)
    -***can do some work on the arch before the rotors I think? This is one I'm still not quite sure on.***
    -add a secondary hole up by the "c" on the outlet and take it down to about the second "line"
    - reshape/open up the original outlet (in my case going to copy posi race design)

    Does this sound about right guys?
     
    Last edited: Aug 19, 2013
  12. Whitedealer07

    Whitedealer07 ILB BAK Established Member

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    Sub, Old but good reading.
     
  13. 2003DSGMACH1

    2003DSGMACH1 Member Established Member

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    I gave my hand a shot at porting my eaton before I did my swap what do you guys think?
    cb3b97e603dac82cb39069e5e3cab7b7_zps312b460e.jpg
    8cf33b1ec0c927940b8d261295e2a6c3_zps5fbbb357.jpg
    bc13d18637ecf7756e4c7044c66e19f7_zps570c4d0d.jpg
    9efdc9ae788b92657fbec0caf448bc9f_zps92591622.jpg
    I really like how posi (Brian) did he's ports and how they perform so that's what I try to do with my port.
     
  14. 03' White Snake

    03' White Snake Well-Known Member Established Member

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    My brother started his port, I decided to help him out a bit and fix it for him. He broke through in the TB, so I added a little JB weld filled it in and smoothed it out. I need to do a lot more in the inlet side of the blower. I polished the TB pretty good. Hopefully it will add some power for him.

    Let me know what you think.

    20150503_131420_zpsharuwymf.jpg

    20150503_131432_zpsduro8ff0.jpg

    IMG-20150509-WA0043_zps8ior1m0t.jpg
     
  15. fangs99

    fangs99 Active Member Established Member

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    Just picked up my first Terminator. Car currently has a Gen2 JLT, 2.76upper, Xcal4, Bassani O/R X, Borla stingers and 3.73's recent dyno day it made 470rwhp/483rwtq with the blower and intake Iced down for 1 1/2 hrs in 95+ degree heat. The blower is suppose to be unported and makes 13psi now. I will be looking to add BAP, 60lbs injectors, BA3000 maf and looking to port it myself. My question is, would a aftermarket TB and Plenum help much or would porting the stocker be more costeffecient? What TB and plenum?
     
  16. Posi

    Posi Had a blast. Established Member

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    Everyone I turned my website back on so you all can have pictures of the port. I don't have pictures of the throttle bodies but there's some good pictures in this thread on how to port those with some good porting on them as well.

    http://www.posiperformance.com


    Now you have the information again to do a great Home Port if you spend your time.
     
  17. 98_Undertaker

    98_Undertaker Well-Known Member Established Member

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    Working on the eaton thats going on my 01, still have to smooth them out but most of the cutting is done. Going 9.5:1 compression with long tubes and a 2.93/4 maybe 6 combo.


    plenum2_zps2vz8quud.jpg

    plenum1_zpsr0rpybcc.jpg

    eaton4_zpsdbogijde.jpg

    eaton3_zpszia2nmu7.jpg

    eaton1_zpsefad6kt9.jpg

    eaton2_zpsk1wjqtpt.jpg
     
  18. smiiley

    smiiley New Member

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    Old post but I just did a home port of my eaton. Good or bad? image.jpg image.jpg image.jpg 546CF656-2014-46C0-BAA9-A98ECBB7E126.jpeg
     
  19. follervidez

    follervidez Member Established Member

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  20. Crowd_Control

    Crowd_Control Member Established Member

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    I know this thread is old but maybe posi respond. Is there any benefit to leading in air between the two bearing. I been searching around the net for more pics of posi's port jobs but haven't found the info I need
     
    Last edited: Mar 11, 2018

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