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Thread: power up mods for the 20V

  1. #81
    Member 4A-G3's Avatar
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    ok guys im finally back to this thread with everything done and said. have fixed the exhaust leak, put in cam shafts, valve spings, cam gears, rebuilt bottom end, bigger exhaust and all that good stuff, moved the rpm limit from what sprinter man set it up at 7600 to 8900 and FCK me dead, the car is FCKIN moving, made 113rwkws on the dyno at leading edge


    let me know what you guys think
    People say less TALK More ACTION , I say More TORQUE Less TRACTION


  2. #82
    Veteran timbo's Avatar
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  3. #83
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    That is very impressive!

    What compression ratio did you settle on? And can I ask what kind of header and what size exhaust are you using?

    I'm trying to figure out if my 2.25" mandrel exhaust is too small.

  4. #84
    Moderator Sam-Q's Avatar
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    4A-G3: Unfortunetly without a basis of comparasin it means little, I am betting if you go to another dyno and you can get well under 100kw.

    Grant #2: 2.25 is heaps for just about everyone on here
    My website: SQ Engineering - 4AGE and 3SGE upgrade/replacement parts

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    Sam, kind of random, but on your website it says that VVT retards the cam. My understanding is that it advances it. You can see this in the quoted VVT timing figures.

  6. #86
    Moderator Sam-Q's Avatar
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    can you explain the quoted figures and how you think it suggests that, because if there is something wrong on my site I want to know
    My website: SQ Engineering - 4AGE and 3SGE upgrade/replacement parts

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    Please e-mail to contact me instead of sending a private message on here.

  7. #87
    Member 4A-G3's Avatar
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    rebuilt bottom end with standard parts so no adjustment in compression accept getting it back to factory settings, running 2.25" exhaust straight through with high flow cat and 3" muffler, Sam it was on a dynomax if it was on a mainline dyno it would be in mid to high 90's. very noticeable power improvement from when i first got it back from john at 86rwkw
    People say less TALK More ACTION , I say More TORQUE Less TRACTION


  8. #88
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    Well, I don't have the figures in front of me but Billzilla's website explains it as advance (with timing figures on a chart, with vvt on and off) and Brad at Kelford told me about potential issues with VVT advancing with higher lift and duration. If it was retarded when on, we wouldn't have to turn it of at higher rpm. VVT turns off at high rpm to let the intake vallve close later. I thought I read that from a post of yours actually...

  9. #89
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    so its a hub dyno.....???

    it would be wonderful if people could get in the same sort of habit photographers have... listing the camera and lens and all that information with their pics.

    car guys could list dyno type et all when listing numbers.

    cos claiming an improvement from 86 to 113 without explaining the difference in dyno types is useless to everyone who reads it. not digging at you, more just a comment on the "gospel of dyno's"
    RIP Carly - a smile to light the world.
    06/07/2011

  10. #90
    Moderator Sam-Q's Avatar
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    I will need to check it out, I would of thought it would retard the timing as the valve opening later would mean less overlap and a smaller lobe angle hance more mid range rpm, I am seriously confused
    My website: SQ Engineering - 4AGE and 3SGE upgrade/replacement parts

    - SQ Engineering on facebook -

    Please e-mail to contact me instead of sending a private message on here.

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