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Port n Polish worth it?

Discussion in 'General Tech and Maintenance' started by BigBoy, Jan 5, 2006.

  1. BigBoy

    BigBoy Senior Member

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    I think my headgasket is leaking so while the head is off i was thinking of taking it to portflow for a p&p, valve job, etc.

    Currently

    jdm b16
    skunk2 stage 2 cams
    toda header
    apexi ws exhaust
    aem cai 3"
    p28

    Tuned on Crome this netted 182/128 on a dynapack.

    Im planning to go with an aebs manifold and itr tb at the same time to max the airflow. So how much should i expect? 10? 15? 20?
     
  2. jamesA

    jamesA Well known pissed off telephone guy VIP

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    Did you mess with internals? You'll see a shitload more power from those cams if you raise your compression while you're at it.

    I dunno; I'll throw out some ricer numbers for ya. a PnP will net you 2-3, a TB (if it's any bigger, i don't feel like looking it up) might net you one and the IM might net you one.

    Get the TB and IM portmatched while you're at it. Better gains, but more money out of pocket.
     
  3. YouKnowWhoIBee

    YouKnowWhoIBee my avatar is better.

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  4. BigBoy

    BigBoy Senior Member

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    1 layer headgasket gives me 11:1 compression. 2-3? Theres a place in socal called Hookups, and they guarantee 20 whp! When I do the port n polish, I might mill the head a little bit to bump the compression. I doubt portmatcing the manifold will make a difference.

    Id like to see a before and after dyno. Ill be pissed if i spend $1000 for 5 hp
     
  5. GSRCRXsi

    GSRCRXsi Super Moderator Moderator VIP

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    you cant put a number on a port job. every motor is different. but i will say this more power will be had from a good valve job, then the actual porting.

    and you wont get a before and after, cause for one, i didnt dyno it before, and when i put this head on, then entire build of the engine is changing so you wont really be able to guage it from a previous dyno. you cant really compare a stock enging to a built engine and try to pin point the net gain from one specific mod. theres just too many variables.

    and about the price. first i paid about 1000 for a good amount of work, not just porting. heres the rough breakdown:

    shipping to : 50
    all work done: 900
    -disassemble/ clean/ inspection
    -port & polish
    -multi-angle valve job
    -deshroud valve area in chamber
    -polish chambers
    -surface deck
    -assembly / new seals included
    shipping back : 50

    the work put into this head was probably the best money ive spent by far, and is 100% worth the money to have done by professionals and not just some random shop. the head came back clean enough to eat off of, as you can see. and trust me, it will make more then 5 hp :)
     
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