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  1. #1
    9,000rpm (S2000 Redline!) UR2FAT's Avatar
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    B16A head on B18C block also B20B block with B18C/B16A head

    1)Right, This question has been asked a few times before so I have searched but not found the answers I want.
    By fitting the B16A head on to the B18C block you decrease compression right? So what does this mean, I is a jack ass.
    By doing the swap what sort of power increase could be expected?Anyone got any dyno graphs or something?
    When doing the swap is it just as simple as replacing the new head with the old or are there other things that need to be done?

    2)Secondly, I saw in the latest NZPC there is that DB8-R Integra with the B20B block and the B16A head. Is this a cost efective way of getting some N/A power? They didnt quote any performance figures so I couldnt tell, but there is no replacement for diplacement right so having the extra 200cc couldnt be too bad. How much can one get a B20B block for these days? It is quite a bit isnt it? Would this work as well with the B18C head? What difference would it make?

    Any help is appreciated, sorry there is so much to answer.
    CJC

  2. #2
    5,000rpm (VTEC Power!) 90CIVICSIR's Avatar
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    Wouldnt mind the answer to a coupple of these questions myself
    ".....watching fate as it flows down the path we have chose..."

  3. #3
    Team NZH: Order of Merit evil_elmo's Avatar
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    http://www.honda-tech.com is the place to answer all your questions

    my friend has a B20b VTEC with low compression and it fully blows the crap out of my B18c civic and now he has TURBO his B20b and i have no hope now

    for me B20b VTEC gets the thumbs up, thats why i have a B20b in my garage now :wink:

  4. #4
    7,000rpm (Peak Power)
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    People at honda-tech.com are making 180-190whp with this conversion.

    I expected more like 220-250whp.

    I'm guessing if people added intake/headders/exhaust, the power figure will increase?

    Also is there N/A potential for the hybrid B20B/Vtec conversion?
    Or is the max power output restricted to the 180-190whp range?

    This is a very interesting subject by the way!!

    Found this site:
    http://www.c-speedracing.com/howto/b20vtec/b20vtec.php
    Regards

  5. #5
    9,000rpm (S2000 Redline!) UR2FAT's Avatar
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    That site is very good, thanks HUSSLAA.

    Keep it coming people.

    I also just found www.b20vtec.com <-very interesting.
    CJC

  6. #6
    7,000rpm (Peak Power)
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    Regards

  7. #7
    4,000rpm (Taxi Drag) Qik Lude's Avatar
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    check out http://www.kelford.co.nz/import.html

    parts for a....
    HYBRID CRV2.0L BLOCK WITH B16A HEAD


    Obviously a lot of people are up to this mod!

    Go the mightly b20.....

    Jw
    BOOST - is good

  8. #8
    7,000rpm (Peak Power)
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    Got the price (est.) list from Honda-Tech.com is as follows:

    B20 Medium Set-Up:
    B20 Block: $1800?? $900 US dollars but B20's mite be cheaper in NZ?
    JE 11.5 or 12/5 Pistons - $970
    Eagle Rods - $700

    B16A/B18c Head:
    B16A/B18c Head - $unknown
    Skunk Stage 2 Cams - $1300
    Skunk Cam Gears - $400
    Type R Valvetrain - $700

    Transmission:
    B16A/B18C will do. Apprently B18C is better!

    ECU: - $1100 - $1300??
    P28 rechipped with a B16A roggy with a higher rev limit.
    VAFC
    VAFC provides very good tunability and since it is a stock program it is much less prone to detonation for timing reasons.

    Fuel Setup - $1200
    RC 310cc Injectors
    Holley 255 pump
    Adjustable Fuel Pressure Regulator with Gauge

    Total Cost (EST.) - $8,350. Price excludes transmission and B16A/B18C head!! 8O

    Hope this helps. Link to the actual post is:
    http://www.honda-tech.com/zerothread?id=174153

    I'm sure us being NZers we can source simillar parts second hand or parts from another car, makin the build cheaper.

    Read an article on NZPerformance Car Magazine with a guy with an SIR-G? with a B20B in it... if he's on here i'd like to hear his thoughts on the build!

    Rob
    Regards

  9. #9
    9,000rpm (S2000 Redline!) UR2FAT's Avatar
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    Quote Originally Posted by HUSSLAA
    Total Cost (EST.) - $8,350. Price excludes transmission and B16A/B18C head!! 8O
    You could get a very very nice turbo set up for that sort of moola and probably twice the power and more...
    CJC

  10. #10
    7,000rpm (Peak Power)
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    Yeah that's the thing thats puttin me off...

    I really wanna get ahold of someone in NZ that's done this aye..

    The main problem is that the B20b block is so freakin weak... might as well go for the H22A conversion!! Probably make the same amount of power STOCK!
    Regards

  11. #11
    Team NZH: Order of Merit Cement's Avatar
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    I have posted a bit of stuff before on the B20 vtec build, either have a wee search or pester SIRCVC for some info and / or dollar values

  12. #12
    7,000rpm (Peak Power)
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    Price list from Kelford:


    New Zealandís Number 1 choice for hardcore Import Drag racing engine mods


    166 Wordsworth Street
    Christchurch NZ
    Ph 03 366 4514
    Fax 03 366 4515


    Honda B16A / B18C Performance upgrade products

    Individual prices:

    New racing camshafts (pair) 1250

    Honda Type R valve springs 385

    High RPM valve spring kit (Toda) 799

    Ferrea Titanium retainer, valve spring & locator kit 1050

    ZEX Titanium retainer, valve spring kit & locator kit 899

    Ferrea Racing oversize stainless valves 928

    Adjustable cam gears (exchange pair) 400

    Cylinder head porting and flow bench work 600

    Valve seats cut to our own designs,
    seat heights and Valve margins set,
    valve back heights set 399

    Surface grinding to correct finish
    to run steel laminate gasket 50

    Cleaning and assembly 180

    Package Deal 1,
    New race cams, adjustable gears, porting
    and flow bench work, valve and seat work,
    surface grind, cleaning and assembly
    with new stem seals 2800

    Package Deal 2,
    New race cams, High RPM spring pack,
    oversize stainless valves, and adjustable
    cam gears, porting and flow bench work,
    valve and seat work, surface grind,
    cleaning and assembly with new stem seals 4300

    NEW PRODUCT
    JE Pistons Pins Rings,
    Locks & Eagle H Beam Conrods kit 1800
    Regards

  13. #13
    b20b blocks can be found for around $800-1500 depednign on how you want them. $12-1500 is most common. I believe you can also swap in the B18c or B16a crank and rods to mess up the displacement and compression to give slightly lower cc rating and compression = pefect setup for turbo with forgies.

    I believe with a decent comp ratio and cams, i/h/e you can get 220-240 whp out of these, so a mate in the US tells me.

  14. #14
    6,000rpm (Max Torque) PH4T SI's Avatar
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    can this conversion work with a b20a engine?
    Sent from my Telegraph Key using NZHondas.com morse code app.

  15. #15

    ...

    b20b is popular in us with b16/b18 head, as well as the ls swap , using b18b bottom end and b16a top end, but known more as the poor mans b18c 8) go for it if your up for the challenge as evil elmo said they produce some good numbers , and in my opinion suited more for turbo applications..
    if parts arn't breaking your not making enough power

  16. #16
    5,000rpm (VTEC Power!) Grrreg's Avatar
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    I'm pritty sure that BLAZED RACER did the B16A head on the B18C (read it on those flash boards at the Auto Saloon :wink: )

  17. #17

    ..

    yea b16a head on b18c block is common and good upgrade bumpin compression up , but b18b block with b16a head = rangi mans b18c , althought you do need do some mods to make it work, it does actually work :wink:
    if parts arn't breaking your not making enough power

  18. #18
    Team NZH: Order of Merit mung's Avatar
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    Quote Originally Posted by Grrreg
    I'm pritty sure that BLAZED RACER did the B16A head on the B18C (read it on those flash boards at the Auto Saloon :wink: )
    haha.!! no not me.. 8)

    james, i suggest you PM or ask cement.!
    WONG'S KITCHEN - MASSEY ST
    a: 63 Massey St, Frankton - Hamilton p: 078466689 f: wong's on Facebook


  19. #19
    4,000rpm (Taxi Drag) Qik Lude's Avatar
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    Quote Originally Posted by PH4T SI
    can this conversion work with a b20a engine?
    in short, yes you can bolt the b16 vtec head to the b20a block.
    same sort of fiddling required.

    Jw
    BOOST - is good

  20. #20
    Team NZH: Order of Merit Cement's Avatar
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    I always thought the B20A was pretty much unlike the rest of the B series range and that its not practical or possible to use the VTEC head on it ? Could be wrong but yea ... would research it hard before buying bits.

  21. #21
    4,000rpm (Taxi Drag) Qik Lude's Avatar
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    Quote Originally Posted by Cement
    I always thought the B20A was pretty much unlike the rest of the B series range and that its not practical or possible to use the VTEC head on it ? Could be wrong but yea ... would research it hard before buying bits.

    www.ludespeed.com

    when he was doing alot of the bits for these he made one or two...
    Pretty much the same sort of conversion really.

    Jw
    BOOST - is good

  22. #22
    5,000rpm (VTEC Power!) IntegraXSi's Avatar
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    No, you definitely can't.

    It's easy to mis-type B20A instead of B20B/Z though, esp when we're talking about a B16A head!

  23. #23

    ..

    its been done so i wouldnt think you are right about it being impossible :wink:
    if parts arn't breaking your not making enough power

  24. #24
    5,000rpm (VTEC Power!) IntegraXSi's Avatar
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    Well, there's some crazy conversions out there I guess. If you've got too much money, and little sense, then this'd be a great conversion!

    The rod-stroke ratio would be terrible, plus trying to get a B series VTEC head on that thing... yuck!

    Might as well just go with the B20B/Z....

  25. #25
    Team NZH: Order of Merit David R's Avatar
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    Whats the standard bottom end like on the b18b/z or b18b?? How would the standard internals handle the higher hp and rpm witht he vtec head?

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