3-Stage VTEC--COMPREHENSIVE INFO ON D15B/D15z7

Discussion in 'Honda' started by SYeNi69, Dec 8, 2009.

  1. SYeNi69

    SYeNi69 Senior Member
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    Hi ZTH members ... I'm keen on knowing the potential of a D-series engine ... unlike in the states ... most of the honda's there are still running with these engines .. either built N/a to turbochanged ... i own an EK3 which i brought back from HK when i was there ... It comes with a D15Z7 aka D15B engine ... unlike most of the 1.6L EK's in M'sia mine is a 1.5L ... i found some info on the net ... and reading from the D-series websites on the net .. they love this engine and are saying that it has alot of potential ... problem is ... i've yet to find a workshop that has done a D-series buildup ... apart from PnP/exhaust/CAI. All workshop malas layan when i say single cam ... :bawling:

    Yes i know that swapping a B engine is a good platform but i find no reason to change something that's still in very good cond.

    I'm sure it would be rude to tell a pomen to read some post of how those guys in the US build the D-series ... So i won't even bother ...

    Has anyone here ever tried to mod a D-series engine ?? results ?? satisfaction ??

    p.s. i found this on the net.

     

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    #1 SYeNi69, Dec 8, 2009
    Last edited by a moderator: Feb 10, 2012
  2. SYeNi69

    SYeNi69 Senior Member
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    Anybody ??? Takkan all main DOHC :biggrin: ... where are the SOHC Vtec ???
     
  3. dcloo

    dcloo Senior Member
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    not to says D -series was not good
    1st- How the performance if compare to 4G15/4G91 or cam pro/neo?
    2nd- malaysia was very hard/rare to get performance parts for D-series
    3rd- if going to boost how reliable its can hold for your engine life spent
    4th same amount money you spent on D-series which you made modification on B-series/K series(example cam shaft,con rod, bearing,close ratio) so the total out i think you can figure it out by yourself

    just my 2 cent no heart feeling :driver: VTEC
     
  4. SYeNi69

    SYeNi69 Senior Member
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    Hi dcloo

    I'll answer ur questions ... :biggrin: correct me if im wrong ... i'm pretty noob at this ...

    1st - So far as far as the once u mentioned ... i have no probs with thoose ... i've done a couple of benchmark with my car including with stock Putra and Gti ... not to say i won or anything ... but my car was ahead and my engine is a 1.5L

    2nd - i would have to agree with u on that ... but then finding to me is not a problem ... but to find a person who's willing to RND the engine ... '0' ... and to find a workshop who knows what their doing ... thats the hard part ... and i dont wanna be the 1st person to try or a.k.a. LAB RAT :thefinger:

    3rd - about BOT on a d-series ... i have read alot about this ... and the weak link on a d-series engine would be the conrods ... so freaking thin ... eagle has made custom rods ... price is not too expensive and can be bought online or ordered through authorised dealers in M'sia ... sources - Turbo D16 website ... other stuff like piston all can kacuk ...

    4th - but then to start of with a D engine and dump the RM7-8k money for b-series in it ... i'm pretty sure it can easily makan a stock B16A (as the US people claim and i find true) ... cam shaft/LSD/gear ratios can be made by Charlie matspeed ...cams weither regrind or billet ... cost also about the same as some would buy HKS/BC/Skunk2 ... bear in mind that product liability for Matspeed cams is 1M :rofl: ...

    What im trying to say is ... everytime i go to workshop i will see these D-engines lying around everywhere left to root or sold to besi buruk ... its sad cause the people in the states prefer this to a B-series engine why not us ??? ... if proton and mitsu engine 1.3 and 1.5 also people mod kawkaw here ... why leave the D-series 1.5 and 1.6 ??? :nurse:

    p.s. - the truth is i wish can afford buy B18C5 or K20 straight ... but to mahal :biggrin: ... so wanna experiment 1st with my factory given engine ... and try to do what those poeple in US doing ... :rofl:
     
    #4 SYeNi69, Dec 9, 2009
    Last edited: Dec 9, 2009
  5. aalto

    aalto Senior Member
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    If you pump in 7K-8K on a d-series, you'll probably smoke a stock B16a...but not by that much..

    So how long do you think you'll be happy smoking stock B16a's? not long I would guess...

    how bout modded B series then? you'd have to pump in more cash for your d-series...

    Theres also more options for performance parts on a b-series.

    Then there the reliability issue....the more you mod the lower the reliability....

    But in the end....it's whatever makes you happy i guess......even if its just to be different then go ahead....:biggrin:
     
  6. deacon

    deacon Senior master debater
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    This particular D series engine has tonnes of potential, but you need to do research on what parts are needed to perform an upgrade in power.

    I would suggest getting a custom regrind cam perhaps from matspeed (but only if you know what durations you want). Preferably something that can accommodate the 3 stage vtec system.

    Then were it me, i would attempt to swap the bottom end for a D16 if it all bolts up nicely.

    With a SOHC you get less rotational losses but then again having to operate two sets of valves and springs with one cam shaft could produce some unwanted stress.

    Perhaps you should hit up forum from which you got this info, look for a setup that's relatively easy to perform and copy it wholesale. Start with the build threads they usually put their specs down with pics included.
     
  7. LuKa

    LuKa Senior Member
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    its the same in the states as well bro... Vtec Dohc B-Series aint cheap there as well... not all honda modders uses a B series motor for their civics...

    the D Series are more popular there since it is much cheaper.. n most of them can do a head swap for their existing D15 or D16 engine for the Single Vtec head convertion.. which is in malaysia equivalent to Eg8 1.5 single V.tec and Ek99 Spec Local Model (EJ) with 1.6 v.tec single cam... also.. in the states their modification job or transplant is rated by hours of work which is expensive n not like in malaysia which is total package of installation... thats y the american like to DIY almost everything they can... tools and equipments for DIY are a norm to see in their garage or houses due to this reasons.. and americans dont like the idea spending n having loans on cheap japs cars to refurbished or do transplant...the max is credit card usage for parts n that it.. the rest is DIY.. coz maintaining cars is expensive enough in their country.. they rather spend it on morgage n stuff...

    While

    in malaysia the D Series is less popular.. since Malaysians find that the head swap does not make much different hp and response for the Head swap for the normal Honda 1.5/1.6 Efi engines.. plus the gear box ratio isnt as good as the Vtec 4.2 n 4.4... also plug n play parts are not easily found in aftermarket shops for further upgrades.. u need to modify or fabricate to fit the D series engine... however the D Series is a good engine for a stock non racing type user.. easy to maintain n a bundance of used parts u can salvage... Malaysian like to follow the latest trend... now most modified civic are equip with JDM parts inside n out... n malaysian would go to extend to get personal loans to own a B-series honda or to get an engine transplant..
     
  8. civic EdGe

    civic EdGe Senior Member
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    D-Series engines are not so popular here...... I have to agree that quite many workshops do not layan D-Series engines.... the ones i came across that layan the D-Series are not that knowledgeable in Honda engines, at least from what i have observed.... Kesian those D-engines lying around, rotting into besi buruk...

    For the RnD part, i think most of it will have to depends on your own research....
    You can try honda-tech.com, d-series.org and zealautowerks.com to get ur info n play around wif the compression ratio, CC and etc of your future build.... (maybe u already know this since you have searched the potential of the D15B through mat salleh sites)

    I have been crazy bout the d-engines before as well.... read up quite a lot on it... in case you have done so, u will notice a few "usual" builds, such as using JDM ZC pistons to bump up the compression ratio, combining better flowing heads with high revving block (D15), swapping for better flowing IM from other D-engine and etc... usually D15 blocks are preferred due to shorter stroke n higher R/S ratio, therefore more suitable for higher rev limit compared to D16......

    And to sum it up, I am personally still using D16 non-vtec....:rofl:...sigh...
    Would love to convert to B-Series, but...... no money la...:biggrin:
    So, cant help u on the recommendation of workshops to pioneer your D-series build...
    Anyway, Good luck in your project!

    * btw, anyone knows the market price for D15B halfcuts or other SOHC Vtec halfcuts?
     
  9. LuKa

    LuKa Senior Member
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    dont need to buy halfcut... theres plenty of engine lantai at chopshops.. u can mix n match if u already hv a D series block in yr honda
     
  10. webeck948

    webeck948 Senior Member
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    I also own an EK3 D15B with multimatic transmission, sad how very little can be done( or sourced here) to it, I would too go for a B series transplant if I could afford it haha!

    Please share more of what we can do with what we have!
     
  11. SYeNi69

    SYeNi69 Senior Member
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    hehehehe ... i have searched alot though thoose american forums .. and from my investigation hehehe ... there is one malaysian by the nick BIG[V] in these forums that seems to know alot about d-series engine ... wonder if he is here in ZTH hehehe ... please reveal yourself :nurse: we need ur help :nurse:

    You and me both bro ... btw .. bro ur gb same like mine ... wonder if u use the S mode often ... hehehe ...

    come on where are all the SOHC honda owners !!! :listen:

    p.s. just got my ass handed to me by a stock neo cps ... haiyaaaa ... not good ... :banghead:
    campro also gettin fast nowadays ... :banghead:
    need to start modding ... :nurse:

    Thx for posting guys/sifu's ... will put the dohc vtec under consideration ... :biggrin:
     
  12. webeck948

    webeck948 Senior Member
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    Yes I do use the S-Mode quite often(esp when I'm late for work!haha)but my gb feels a bit sluggish and jerks sometimes, looks like it's time to do another CVTF flushing soon, sigh!

    Looking to plunk in a manual gb if I can find one.
     
  13. LuKa

    LuKa Senior Member
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    Neo is already running DOHC engine...n it performs good on High rev..
    you can opt for a manual transmission from vtec Single cam with LSD... but it wont be cheap... for those using normal Efi head.. u can swap to V.Tec single cam head for abit of power.. aftermarket extractor would help too... however.. the D series piston n conrod is not as strong for high revving.. some opt for Bot with low boost..

    If you r looking for serious power n high revving... B series is the way to go.. n for long run.. theres a lot of performance parts sold new or chopshop for options.. buying and installing a halfcut engine to your existing ride can easily go beyond rm10k for eg n ek... in malaysia.. ppl pLay honda with JDM parts... some cant afford just play interior n exterior only... but if u socialize with honda modders with Bseries... most probably you will get the urge to get the Bseries engine even if it cost an arm n a leg...
     
  14. SAO 6418

    SAO 6418 Senior Member
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    Ex 3-stage Vtec D15B user (sold oledi):banghead:,
    Previously install in 2nd gen civic, performance quite good (if FD ratio more higher let say 4.4) i guess can makan stock b16a oledi.

    If wanna play, 1st thing is to get the manual g/box (can rev till 7.3k rpm:smokin:), cvt only can get 6.2k rpm even in S mode for my case - g/box old oledi). Sohc vtec fd is 4.25 only unless u rojak from ZC, if not mistaken 4.37

    Better spend the amount of money u spend on D-series and put to B-series. Btw, the most important thing is the vtec sound (prraaang....) D-series very soft even u put 4-1 kah, 4-2-1 kah....:thefinger:

    Besides, if wanna play D-series better play D15B vtec from EG (get the manual version to unleash the true potential) coz 3-stage vtec very kacau especially the 2 stage vtec kick-in (hard to tune) and ecu (manual ek3 ecu if damn hard to source unless u go for standalone).

    Finally, wish u happy modding...... vtec...:wavey:
     
  15. Andres

    Andres Senior Member
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    I m new for D series engine.. i own a D17A2 engine.. I also wan to know more about this engine... saw the previous forums, found out that this engine can't do more and let other to throw in here and there... :banghead: ....

    Sifu.. pls advice what need to do from start to end for this engine to make this engine more powerful.. i really feel that the VTEC sound "praggg" very soft.. even we can't know that the VTEC is open or not also sometimes....

    Pls advice..
     
  16. terryhendra

    terryhendra Senior Member
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    Hi, used to be on a non-vtec D15B7 with manual tranny...stock engine is quite good and easily hits top speed of around 205kmph....My experience with running this engine is that the most difficult thing to find is the ECU depending on your wiring and retuning it after u add on aftermarket parts...most of the D series people would do a mini-me or BOT depending on your budget and requirement.

    But if u have the budget, BOT is the best way to gain since it already has a cast-iron block...all u need are the BOT kit, forged pistons, big CC injectors and a standalone ECU for better fine tuning....
     
  17. SYeNi69

    SYeNi69 Senior Member
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    Thx guys for posting ... :wavey:

    Somthing to share with fellow forumers ... Anybody willing to make in bulk ??? i will buy one confirm !!! hehehe ... But then if stick this sure alot of proton campro & mivec cucuk blakang :P

    [​IMG]

    One more ...

    [​IMG]

    ---------- Post added at 02:11 AM ---------- 6 hour anti-bump limit - Previous post was at 01:39 AM ----------

    Luka - i did .. matter of fact i did join a few honda tt's and when i took a ride in an EK 4 door with a stock B16A i was like WTF !!! is that all ??? for almost 10k in total my friend spent for the swap ... to me it was a waste ... if dumped in a D-series and go turbo ... he would be much happier ... even as of now when i meet him he will always swear about Campros ... but then his engine is stock la ... he voiced his regrets for not putting in a B16B or B18C5 ... But thoose with B16B's and B18C5 ... well syok abit la but the amount of money spent ...:banghead: and once u play VTec its very hard to stay stock ... :P

    SAO - bro if wanna change to manual must change ECU ka ??? konfirm ??? if true ... haiyaa this foreman giving me false hope la .. saying only need to change GB ... cause i asked him about ECU he said no need ... :confused:

    To Thoose who want to go Turbo

    i found some info on the net of how to settle the conrod snapping/patah/bengkok issue at a cheap and proven method ... its fact that the rods on D15/D16 are thin and snaps easily ...

    1. This is what most of the guys in US do .. Buy eagle Rods ... price in ebay is around 400USD ... expensive ... i wonder where i can check out the price here in m'sia ?? N1 ?? Amoil ?? maybe cheaper la ...

    2. Remove ur conrod and try to find another cars conrod that will slightly match the length of the OEM one ... make sure its thicker or comes from a turbo car ... have a proper machine shop to machine and match them up ... this involves the semi circle where u place ur rod bearings ...


    Happy Modding !!! Vtec but sohc :biggrin: .... :driver:
     
    #17 SYeNi69, Dec 16, 2009
    Last edited: Dec 16, 2009
  18. SAO 6418

    SAO 6418 Senior Member
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    Terryhendra,
    All honda block is made of alloy, not cast iron.

    Syeni69,
    Ohhh.... ur pormen is rite. No need change ecu, still can perform but not as optimise as manual ecu (fuel mapping a bit diffrent i guess). After u install manual g/box (better get those sohc vtec g/box - the closest ratio u can get), juz throw away the auto ecu (not the main ecu) then violaa...

    But have to remember:listen:, ek3 wiring is extremely sensitive especially the ecu part, so have to be careful. Sometimes check light pop out showing some engine sensor 'kong' but at the end ecu wiring lose, kick the ecu few times then bek to normal liao...:banghead:

    Sohc vtec also not cheap bro (i mean performance parts), everything have to source oversea, u also will be very lucky if u can find at chop shop. Let say u throw 5k to mod ur N/A D15B, at the end still loss to B16A. If u say 5k on BOT not enuf pulak, hantam few times engine kaboom coz not enuf preparation on engine.

    Anyway juz my opinion saja lah ok, no heart feeling. Sohc vtec quite fun also but provided in the light chassis car. Like me last time, can follow those 95' accord wif H22A manual :thefinger:
     
  19. cad843

    cad843 Senior Member
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    For the past 2 year, I'm using EK3 single cam D15b engine with original chasis EK3 year 99. I bought the car somewhere in 2004 with the mileage around 65k and using it until almost 210k and dont facing any major prob.

    I agree its a good engine too. With minor mods can satisfied for daily driving unless u look for high rev engine such b series. I still have the engine with manual trans and also the ECU (ori EK3 manual) ... anybody interested .... let me know.

    BTW ... for fuel efficiency ... I recommend this engine since I managed to clock 460km for full tank around RM75 with normal drive / city drive below 110km/h.
     
  20. tigger5251

    tigger5251 Banned

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    Just bear in mind when you are living with SOHC or DOHC.

    SOHC power focus on 2000rpm-5000rpm, wherehein the torque respond is the quickest if your engine is below 2000cc.

    DOHC power focus on mid to high rev 3000-7000rpm.

    As for VTEC dohc, the power kicks in 6000-9000rpm which was rated one of the most powerful 1600cc NA ever lived, BUT is has NO torque at low end at all. It's a street to track race car, it CANNOT hillclimb unless you want to overheat n overkill the engine.

    Hence, now you understand both SOHC and DOHC has different potential in different kind of driving. As for parts and maintenance wise, its your choice to make, to get the common B16A engine which is more popular in Msia (coz you lives here, not USA), or to build your lesser popular D-series engine which is still good.

    The trick is, to use the simplest method to gain the power you want. If you build ur D engine with a turbo, B16A surely canot beat u up genting with steep hill climb. And if you choose B16A, u can beat alot cars 0-100kmh on a flat road.

    But everything still relies on tuning, the choosing of the correct turbo, correct boost, and most importantly, THE CORRECT TUNER. But I will frankly says, nothing beats turbo, if you know how to use a turbo.

    As for me, I never own any Vtec, but I do have alot frens with VTEC. I personally rebuilt a simple DOHC 2200cc with stage 3 mods, spent 7-8k, now smoking alot street vtecs and also hill climb. For me, I archieved what I want, which is 180nm wheel torque at 3200rpm, and 200nm at 5,500. Very low HP only.....
     
    #20 tigger5251, Dec 28, 2009
    Last edited: Dec 28, 2009

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