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

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

  1. white_flame

    white_flame From Facebook

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    3-stage VTEC? my friend has an EK3 with that.. seems pretty cool but seeing it scream woefully at 7k saddens me.. especially the sad CVT gearbox. CVT really kills those who have the hearts to buff up their cars.
     
  2. Big[V]

    Big[V] Senior Member
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    Looking for me? lol

    Anyway was browsing around seems we do have some SOHC VTEC lovers here haha.

    Though I haven't swapped to manual yet but I've been doing some background research on this for some time. But basically it boils down to this:

    1. Manual swap + VAFC + tuning + other mods might cost roughly 4K. With that you're looking around no more than 150ps. That's around 100ps/l and to me it's an acceptable level for that little 4 banger.

    2. VTEC at 5100-5200rpms feels ok to me.

    3. If want to go beyond 100ps/l, stock motor may not withstand that kind of stress especially pushing close to 200ps. Looking for 200ps again is another whole different ball park. Either a hardcore rebuild like Bisimoto or turbo it.

    There's a Japanese guy whom turboed his 3 stage VTEC CVT close to 200ps + VAFC + tuning and strangely enough he said that Honda Japan advised the CVT can take 200ps! He's using bone stock motor and STOCK injectors. Owner also says it gives the Altezza with 6mt 3S motor a run for it's money lol.

    YouTube- civic cvt  turbo D15B 0-100kï½

    4. If you are maintaining stock rev limit i.e. 7200rpms, EG S20 manual gearbox is ok. Compared to 7200rpms with EG gearbox and 8200rpms for B16A 4.4 FD gearbox is almost the same scale wise. i.e.

    D15B 2nd gear @ 7200rpms = B16A 2nd gear @ 8200rpms = close to 100km/h

    5. An interesting mod is to swap a D16 block with 3 stage VTEC head and actually that motor exists. It's called D16W8 and only available in the Philipines. Same 130ps but better low end torque.

    Still SOHC VTEC pound for pound will never beat DOHC VTEC as to least, both are for totally different reasons. Even if you could, cost of doing so would obviously surpass swapping a DOHC VTEC.

    But for whatever it is worth, it's not a bad motor to have fun with. Just dun challenge taiko DOHC VTEC la. :biggrin:
     
    #22 Big[V], Jan 22, 2010
    Last edited: Jan 22, 2010
  3. donCityZ

    donCityZ Senior Member
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    D15 series mid and hi cam is available at Powerzone.

    But true, modding a D series costs will be too much. Better off do a swap with B series which is abundant. (Power-money ratio wise)
     
  4. camp

    camp Senior Member
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    Just wondering for our local D16, ie ej9 how much horses for this engine?
     
  5. Big[V]

    Big[V] Senior Member
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    For which D15B engine is for the high cam? single or dual stage? I would presume it is only for single stage as I have no come across aftermarket cam specifically for dual stage yet.

    ---------- Post added at 05:36 PM ---------- 6 hour anti-bump limit - Previous post was at 05:29 PM ----------

    D16A VTEC would be around 130ps also with slightly lower rev limit and higher and earlier torque than D15B VTEC.

    There is basically 3 types of D16A available but I dunno whether all three is available locally. From observation looks like we only have option 1 & 2.

    1. D16A VTEC (Wild cam)
    2. D16A Non VTEC (normal 16V 4 banger)
    3. D16A VTEC-E (lean burn)

    There is another called Civic HX using LPG on D16A but only available in the States.
     
    #25 Big[V], Feb 23, 2010
    Last edited: Feb 23, 2010
  6. camp

    camp Senior Member
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    [/QUOTE]D16A VTEC would be around 130ps also with slightly lower rev limit and higher and earlier torque than D15B VTEC.

    There is basically 3 types of D16A available but I dunno whether all three is available locally. From observation looks like we only have option 1 & 2.

    1. D16A VTEC (Wild cam)
    2. D16A Non VTEC (normal 16V 4 banger)
    3. D16A VTEC-E (lean burn)

    There is another called Civic HX using LPG on D16A but only available in the States.[/QUOTE]

    Bro tq for the info...can you explain more about D16A Vtec (wild cam), wild cam what it is?
     
    #26 camp, Feb 24, 2010
    Last edited: Feb 24, 2010
  7. SYeNi69

    SYeNi69 Senior Member
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    Wow BigV is really in ZTH lol ... with the same icon also ... hahaahah ...
     
  8. Big[V]

    Big[V] Senior Member
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    D16A VTEC would be around 130ps also with slightly lower rev limit and higher and earlier torque than D15B VTEC.

    There is basically 3 types of D16A available but I dunno whether all three is available locally. From observation looks like we only have option 1 & 2.

    1. D16A VTEC (Wild cam)
    2. D16A Non VTEC (normal 16V 4 banger)
    3. D16A VTEC-E (lean burn)

    There is another called Civic HX using LPG on D16A but only available in the States.[/QUOTE]

    Bro tq for the info...can you explain more about D16A Vtec (wild cam), wild cam what it is?[/QUOTE]

    Wild cam means high output cam like EG8 D15B at 130ps.

    Got VTEC-E type around 115ps but it's for economical driving.
     
  9. stormlcc

    stormlcc Senior Member
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    hi guys, still playing around with your D series engine? I'm going to purchase a cheap old civic EF from my cousin. it will be used by me and my family for 100% town use. it's still using the standard carb engine, and i'm planning to swap in a D15B motor with auto GB for comfort, easy to use, economy and also some power (compared to the carb motor this is much much better). I dont want to swap B series engine because it's quite expensive and defeats the purpose because this is not going to be used in spirited runs, it's only used as my spare family car. So is this engine really that good (for my purpose) and is spare parts easy and cheap to find nowadays? since i seldom hear ppl swap this engine into their civics (mostly go for B series)

    thank you for your kind reply
     
  10. Big[V]

    Big[V] Senior Member
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    u can slap in any d series motor in but if you are thinking of putting d15b 3 stage + CVT, some chassis & undercarriage work is required to clear the massive cvt gearbox as the EF engine bay space is limited.

    From carb based convert to EFI it's a hefty process. Make sure you get all the required components before you start. The last thing you'd want to do is frantically looking for parts when suddenly faced a hurdle during the swap.

    Best recommendation is getting a d15b half cut. maybe pricey but much less headache. consider it a bit of extra for some peace of mind.
     
    #30 Big[V], Jun 21, 2010
    Last edited: Jun 21, 2010
  11. stormlcc

    stormlcc Senior Member
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    i am getting the halfcut, because the dashboard swap is also part of "the plan". from your description of the cvt gearbox fitting in problem, i think it won't be much of a problem for me because the engine i'm getting is the 1st or 2nd gen with the normal AT gearbox. the one with CVT is the latest model from the EK series right?

    the thing is, i've bean searching frantically in the net for halfcut prices, can't seem to find any, all of them were engine lantai (priced between RM800-1500 depends on what u get), anyone knows the current price of a halfcut?
     
  12. Big[V]

    Big[V] Senior Member
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    you'd have to search for it online. d15b half cuts are not common as they are not popular swap choices.

    Which year half cut do you have in mind?
     
  13. stormlcc

    stormlcc Senior Member
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    i'm looking for year 94 or 95. if halfcuts are hard to find, then the obvious choice is engine lantai, although i would really want a halfcut because i want the dashboard, wiring and brakes

    if really cant find all the stuff i need for the D15B project, then my second choice will be a B16A auto transplant, although it's twice the price (around RM5000), this one sure can get complete parts without any headaches
     
  14. ae110_toms

    ae110_toms Senior Member
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    everybody knows how much it costs, the half cut of this D15B 3 stages vtec? price of engine lantai too?
     
  15. ^pomen_GTR^

    ^pomen_GTR^ Senior Member
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    try order custom camshaft from matspeed or powerzone....

    it might worth to check out first..
     
  16. tks84

    tks84 Senior Member
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    hie there, wanna ask some questions...
    i'm using D series engine too (LONG LIVE D SERIES:proud:)
    Mine is a 1.6 songle cam non vtec (D16a1 i guess) from honda DA7 recond car from japan ODB1)
    Questions = can i mod from non vtec to vtec?what are the steps?price?problem?
    or straigh away go for BOT? JPJ?
    i heard powerzone has high cam for Dseries...has anyone inquiry before?
     
  17. lucian^^Gk

    lucian^^Gk 5 Year | Silver

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    i'm aso non-vtec user, really sad no power:bawling:
     
  18. takubo

    takubo 15 Year | Platinum

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    Hye bro,Still rUnning ur soch vtec?i'm oso D series lover.just found this thread..wish i could share something here...:listen:
     
  19. ringo5185

    ringo5185 Senior Member
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    I'm running on a D15B 16V non-vtec too..City Type-Z....you can get a few affordable upgrades like d-series light crank pulley, change to 4-2-1 manifold...etc...but will not increase the power tremendously, perhaps maybe 1 to 5whp if you are lucky. Dyno run stated at only 109whp.... :( perhaps maybe a 11 year old engine needs to do overhauling to maintained back the power...just aiming at 130whp to 150whp...this will be ideal for me.
    wishing to do a mini-me conversion.....D15B lower block with a D16Z6 head...but the thing is...its so hard to find a good d-series foreman that can rely to do the conversion....from non-vtec to vtec is already a problem on which ecu to use....wiring to get...yet im running now a P3S ecu..which is super rare...not even a p30 ecu could fit in. Next, mini-me conversion also causes the compression ratio to be a high compression motor...running at 11.0:1 which you need to feed with higher ron octane. Stock is just 9.2:1...running at ron 95 already sometimes causing knocking....
     
  20. Big[V]

    Big[V] Senior Member
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    Since your motor is a non vtec type you will be spending alot on the NA route and the power gains aren't spectacular. The amount of cash spent to get it up to 150whp would equate close to getting a motor swap.

    considering a light boost turbo root is a viable option since your cr is quite low. if you are targeting 150 whp getting a small fast spooling turbo will get you there. the best part is the low down torque you'll get.
     

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