I
I need to know what to do, I can buy any of both to put on my 1993 d15b Vtec
a 1991 si trany
or a 1991 dx trany
wich one is the best. I know that my RPm is going to be higher at 60 mph with the si, is this going to be bad for my engine? anyway, tell me wich one is the best, please include reason.
I will trow in a pics of my engine for those who wonder WTF is a d15B Vtec.
see ya
same base as a d16z6, different bore and compression, rated at 130hp to the crank.

 

well it depends, an SI tranny will always be better for acceleration and performance, whereas the DX tranny will give you better gas mileage.

 

Better all the way around to go with the si tranny.
Elmerfudd

 

Ok, I was knowing that the si was better for acceleration and gas millage go with the engine RpM so if the si make the engine rev at a higher point for same cruising speed it's normal that it will consume more fuel.
At what RPM are you reving at 60mph.

 

from what i understand, the si tranny will give you better gas mileage as well since it keeps the engine more in it's powerband when you're cruising. basically, the engine runs at higher revs but it's easier for it to move the car.

 

si tranny hands down.....


Yager-

 

Si tranny 0wnz.

 

im sorry but your D15B does not have 130 HP

its either 70 bhp @4500 if it came out of a CX [D15B8]
or its 102 bhp @ 5900 if it came out of a DX or LX [D15B7]


the D16Z6 has 125 bhp @ 6600 so i dont know where you got your hp numbers from but they are wrong.

unless you have a built motor, in which case. nothing above matters.

and as for a tranny, buy a ZC and put a si final drive in there. or if you are worried about highway RPM put in the Si 5th as well.

1-4 = insane close gearing, for insane acceleration, and 5 as a nice cruizing gear for the highway.


[Modified by nawoj, 5:32 PM 10/6/2002]

 

fyi, its totally possible for him to have 130bhp. i have a bone stock d15b2 with I/H/E and the mpfi conversion and im putting down 120 WHEEL horse power. yes, the d15b2 is rated at 92hp at the flywheel. you shouldnt EVER use dealer specs to judge motors. dealer specs are a generalization, some motors produce more, some produce less.

 

So Sorry to tell you you'r an ignorent,
I just tell you it's a d15b, not a d15b something
to instruct you I will give you a link that you MUST read to became more bright!!
for your info my car is way more fast than a 1992 std SI with i/e/h.
so : read this
http://asia.vtec.net/article/d15b/
I'm so tired, everytime I speak about my engine someone that don't know a **** about it tell me i'm wrong,
Damn get your info before speaking !!!



[Modified by kranked91dx, 11:51 PM 10/6/2002]

 

It develops a high 130ps at 6800rpm with max torque of 14.1kgm at 5200rpm

ok, WTF is 130ps mean?

and how do i translate that into U.S. HORSEPOWER?

after a little research, its 128.221613 hp... still not 130

and a 101 torque... impressive.....

ehh, ill stick with my $100 d16z6,

a little more torque, and a tad less hp...

get over yourself, you got a big bad *** 1.5L VTEC engine...

jackass.

 

nawoj, its not about him trying to be an badass, its about you being wrong.

kranked, i seriously doubt that you have a JDM d15b, if you do, show some pics of the block code. you probably just tell people you have a JDM motor just to brag(as if thats anything to brag about) but you still have the stock d15b2 block and did the mpfi conversion using a z6 or y8 head.

 

yeah, he failed to mention its a JDM motor...

no US 1.5 motor yeilds any higher than 107 STOCK.

and now that i look at the post more closely i do notice that he does give alot of stats on his motor for asking what tranny to use.

and if he need to ask if a higher RPM is bad for his engine... i do question his ability to pick out a good motor.

YES I WAS WRONG... but was he right?


[Modified by nawoj, 9:32 PM 10/7/2002]

 

DAMN!!!
IT's a real JDM d15b,
except porting, polishing and planing ( like 0.005 mm ) the head is original.
only wiring to the car arness was changed to accept mpfi, engine come with it.
I bought this engine at OSAKA import, in MTL.
I have choose it my self, after long research. I was wanting one cause it push more than the d16z6. I shearched the net and found it.
First I was wanting the three stage Vtec, a guy named Juan a Osaka import tell me he could find one, but having like a year delay cause they are very rare.
since the tree stage vtec is more oriented in fuel economy I choose to take the only d15b they were having in stock. Comming out of a Ferio.
ZeusZore was having one before is rescent crash.
I will try to show a pics of the engine code actually I will trow one in the post but it's very bad, my wrong.
I promiss I will take a better one soon as I can.

Now stop paranoïng on my case guy I promiss it's a Real one, trust as soon as I can clean up this engine code and show you more closely the code I will do it.



[Modified by kranked91dx, 5:00 AM 10/8/2002]

 

nice story, even nicer pic.....

 

I tryed my best for the pics,
then what the **** is so impressive with jdm engine ???
Osaka, Sunrise, Nipon import all those importer split their *** in 5 too sell them,
just get to it with the cash and no probs man.
then I don't brag a **** about this engine. have you ever being thought that if your insurance compagny find you put a 1.6 in a 1.5 dx body, and not declare it as an Si model. you insurance will be voided. It's another reason why it's a 1.5.
now for those of you that are still sceptical then the only thing I can say
is a big and heart welming **** YOU.
I try to get some little info, then everythime I tell it's a real d15b everybody **** around and tell my I am a liar, why shoul I lie about my engine when I got some ****'n big trany problem. I try to solve them, not to fool people about my engine, wake the **** up dudes, it's nothing really impressive, it's not a turboed d16z6, all built putting down 375hp. only a JDM ( VERY IMPORTANT TO MENTIONE) d15b, pourring out around 130 hp ( my god like 128,**** and nothing) then it's 128 I DONT CARE. I want to know it my SI trany will fit in there, i'm not even shure because people can't answer the question. But I think cause the jdm d15b got the same block as the d16z6 and the 1989 - 1991 SI trany fit on those according tho Honda Hybrid ressources.
Still try to find a better engine code pics.

 

every ******* D series motor will accept every ******* d series tranny... regardless of it being hydro or cable...

do some ******* research.

and you ARE getting misinfo on your insurace co. or you just have a shitty insurance co.

 

Yhea I know that, my insurance compagny is shitty but Hey I am in Canada, not same reglementation as your country, plus she is ****'n cheap.

For my trany I know it's supposed to fit. but their are still exception like the 1988 won't fit cause of the spline. Now if someone as alreaddy done this the a JDM d15b, I want precision for the clutch assembly, here again I know i can keep the 1993 jdm d15b clutch, pressure plate and flywheel. anyone have tryed this????

 

calm down bud, take a deep breath. the d15b came in the 92-95 JDM civics so the block, even thou its a D series, is not the same as the 88-91 USDM block. D series trannys are interchangable, even different generations(92-95 tranny in a 88-91 civic), so you shouldnt have any problems with either DX or SI tranny that you have. if i were you, i would use the SI tranny, better acceleration. keep in mind, the tranny castings from 88-91 are different from the 92-95 but they will still work, so internally theyre the same but on the outside they look a little different. also, you might have a flywheel issue as well, dont know for sure on that thou.

 

Thank's a lot fast 1point5,

ZeusZore told me the same about the flywheel isue, I was wondering wich will fit in there, I can't find nothing on the net. I was thinking about having a 1991 si flywheel / clutch assembly, but here again someone told me that the flywheel won't fit. I am a bit fuct up about this one. my cable to hydro ( Home made kit ) dosn't get me a good clutch feeling so I want to change the trany to get it cable actuated, the trany itself dosn't give me any problem just the damn clutch pressure. it's like having a 1685986569843546984psi pressure plate except it dosn't stick that much.

 

you need to either go with all 4th gen stuff with the clutch [flywheel clutch pressure plate] or all 5th gen...


make sure both have the same number of splines and there will be zero problems.

 

forget the engine code on the block ...

show me the dual VTEC SILENOIDS!!!!!!!!

3 stage vtec right???

Any D-series tranny will work....dx is too tall for any accleration
youll be much happier with the SI

What type of driving do you do? city or highway?

I have an SI tranny with 13" low pro tires so my gearing is even shorter and I get over 40mpg highways driving

SI all the way

 

Sorry vtec4thechildren, it's not that model, that was the one I was wanting but they are Very Very Very rare, it was like waiting one year to get it, I was having no engine at all at this moment so I choose the only one stage Vtec sice they were having one in stock. The tree stage Vtec was the very earlier version of the d15b.

 

if u ahve the 1st stage, shouldnt u have a black valvecover?
My friend has a JDM d15b motor from japan, cept its a DX motor...
there honestly isnt anything special about the block.
Anyway, ur right it is a dope motor, and that other guy is just a jackass for trying to talk **** on something he knows nothing about.
Get the Si tranny.

 

Thanks SirHatchback,

I know that the valve cover of ZeusZore was black, I have seen many other JDM d15b black. Mine arrived with an aluminazed valve cover, I just polished it to mirror, ( but it faded a bit now ) but on the 1.6 vtec, it's wrote on the cover : 1.6 VTEC, on mine it's only wrote VTec. Anyway as soon as my brother get back from work ( in 6 days ) I will take a good shot of the engine code and show to everybody sceptical that it's a real JDM d15B.
About the block, I said there is nothing special, it's only bored with the dx spec, nothing Special here, just wondering if I will have a flywheel issue, of if the Si trany bolt right there???