BAE 8 Head vs NRE Head

Discussion in 'PSI Superchargers Tech Questions' started by ProMod83, Dec 5, 2010.

  1. ProMod83

    ProMod83 Member

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    Can anyone explain the differance. I have a Brad 8 Head right now 2.450 1.950 what is the benifit going to the NRE aside from oiling? Same intake and exhaust ports?

    Thanks,
    Billy
     
    #1
    ProMod83, Dec 5, 2010
  2. drn1013rd

    drn1013rd Member

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    head

    have you seen the bae new 8x head it has bigger valves and better flow numbers than the 8 dont really know anything about the nre head. sorry just ranting :cool:
    don
     
    #2
    drn1013rd, Dec 6, 2010
  3. aj481x

    aj481x Member

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    The 7X/8X will take different headers
     
    #3
    aj481x, Dec 6, 2010
  4. eli

    eli Banned

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    The ex. ports look like what I did to my 354 steel heads on our BB/A 30 years ago, it causes a extra suction on the ex. side on the overlap to get more burnt fuel out of the cyl. so more fresh fuel goes into the cyl. you will have to richen the fuel system so you don't burn the pistons.
     
    #4
    eli, Dec 6, 2010
  5. ProMod83

    ProMod83 Member

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    So whats all the hype over the NRE head? from what i understand it isnt really any different aside from the oiling.

    I am wanting to know what will does make more power the 8x or the NRE? Opinion pos and neg on both?

    Thanks,
    Billy
     
    #5
    ProMod83, Dec 6, 2010
  6. badbird

    badbird New Member

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    Nre heads have been run on a few dynos with good results 1 reputable company who know their stuff reported 70 hp increase at 9000 rpm,
    they are not massivly different but neither is the price,
    I have a year on these heads on a legal pro mod and finnished the season with the same pushrods and valve springs i started the year with and this motor regulary sees over 10k
    so for me the oiling is a prety big step forward as my previous set up killed springs almost every run and the only change was the heads,

    dont expect any of this new stuff to be head and sholders above the brad stuff as all the development has been done, there will be small increases from guys looking in corners for little bits here and there,
    anyone whos looking for hundreds of hp from a set of heads these days better be changing from a chevy to a fat head

    quickest PX in the world uses them ;)
    FYI
    our 2011 turbo deal will use the NRE heads as they have some or the requirements for a turbo motor built in as standard,
    this will be a max effort NHRA legal deal using development engineers who are well qualified in turbo applications for drag and high end circit racing It is a british company based at silverstone circit so they have the credentials, I gave them a choice of two heads for this set up and the head of choice was the NRE
     
    #6
    Last edited: Dec 7, 2010
    badbird, Dec 7, 2010
  7. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    comparison

    As Graham has pointed out, NRE has done quite a bit of work in valvetrain stabilization and improving oiling, which work hand in hand.

    Compared to a BAE 8 the NRE intake port flowed better up high. I don't have the sheets in front of me, but this was a comparison test between a BAE 8 2.45 intake and an NRE 2.45 intake. Both companies offer 2.475 intake valves now.

    Brad makes a great product and great service. There's no denying that.

    One of the things that brought me to the table with the NRE package is the research and development resources you tap into with these guys. They have an in-house spintron to do valvetrain r&d. They also now have a blower hooked up to the spintron to not only dyno the blower, but flow the blower and the port at pre determined valve lift. They have done quite a bit in the area of camshaft research as well. They also have the latest state of the art machinery and make a beautiful product. They are not the type to share your secrets with someone else, but they will share the developments they find with all of their customers.

    They will also update your existing heads, if possible when new developments come along rather than make you buy the next 'stage.' That's nearly unprecedented in this market.

    Jamie has won several championships with Aussie V8 Supercar teams which is our equivalent to Nascar down under. As they say down under, they are very 'switched on.'
     
    #7
    Will Hanna, Dec 7, 2010
  8. ProMod83

    ProMod83 Member

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    Wondering how the BAE 8X stacks up to the NRE head. I hear the exhaust port is the only real differance. In the market wondering which way to go. What is the largest exhaust you can fit in the NRE 1.950"? i think brad says they can only go 1.900"
     
    #8
    ProMod83, Dec 7, 2010
  9. Sandracer695

    Sandracer695 Member

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    How about repairing the NRE heads. If you break a valve off who can machine the chambers and ports back to what they were. Do you have to send them back?
     
    #9
    Sandracer695, Dec 7, 2010
  10. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    Repairs

    NRE has two authorized repair facilities. Bud Donato of Custom Tool Werks in Brownsburg, IN and Matt Bieneman of MBE Cylinder Heads in Charlotte, NC. are both set up to service NRE heads with all digital files needed to do CNC repairs.
     
    #10
    Will Hanna, Dec 7, 2010
  11. SoDak

    SoDak Active Member

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    Dang it, I wanted to be the first to test cylinder head flow for "blower" motors by using real life boost #'s, not 28".

    Maybe they are not the first...
     
    #11
    SoDak, Dec 8, 2010

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