E9CiViC1F

What are the specifications on the JDM d15b non vtec engine?

4drEF

Might be one of these?
http://en.wikipedia.org/wiki/Honda_D_engine#D15B

E9CiViC1F

The closet i found was just the D15b Vtec one but my D15b isnt Vtec i dont think.

zenon8890

maybe the d15z4 its none vtec 1.5 engine with 105HP, came in alot of cars in the middle east and some ek's in japan

E9CiViC1F

On my block it says just D15b. I was told it wasnt Vtec but im thinking it could be

dr_latino999

Would it not be the same as the D15B7.

E9CiViC1F

I dont know. If you guys want to see a pic of the engine look at my other post titled D15b build. It shows some pics of my engine and engine code

jlicrx

JDM D15B non-VTEC came both fuel injected and with dual carbs - here are some of the models they came in - i am sure that this isn't everything:

fuel injected model:

105ps @ 6400 rpm, 13.6kg/m @ 4500 torque, comp. ratio 9.4:1, came in 96-99 Civic Ferio ML 4-door, 96-99 Civic Ferio Mi 4-door and 96-99 Civic Ri hatch

dual carb model came in three versions:

91ps @ 6000 rpm, 12.1kg/m @ 4000 rpm, comp. ratio 9.2:1, came in 88-91 Civic 35M 4-door and 88-91 Civic 35U 4-door

100ps @ 6300 rpm, 12.8kg/m @4500 torque, comp. ratio 9.2:1, came in 88-91 Civic 25X hatch with auto trans, 88-91 Civic 55X 5-door Shuttle, 88-91 CRX 1.5X with auto trans. and 92-95 Civic MX hatch

105ps @ 6500 rpm, 13.2kg/m @ 4500 torque, comp. ratio 9.2:1, came in 88-91 Civic 25X hatch with manual trans, 88-91 CRX 1.5X with manual trans. and 88-91 Civic 35X 4-door

my guess is that your D15B is one of the dual carb models that has been converted to MPFI - does it have a block-off plate on the back of the head close to the distributor where the manual fuel pump was located? - would probably be diamond shape with 2 bolts

E9CiViC1F

idk. i will check it out and let u guys know

6spnaviracer

I have a jdm d15b non-vtec with DPFI its about 102 HP and took it the track @ the California Speedway drag strip just for kicks.

They were running street legals on Dec 6th and my best time was 17.1 et @ 79 mph.

E9CiViC1F

would i gain any hp if mine was converted to MPFI?

sde780

You'd gain much more HP if you swapped it.

E9CiViC1F

Well mine has been converted to MPFI. How much HP gain will i have gotten?

E9CiViC1F

and yes jlicrx it does have the block off plate on the head

nepsGD3

Is the D15B motor a good motor? Would that be a decent swap instead of going DOHC?
if anyone can give me pointers anything would help...i am a new owner of a 88 EF hatch

zenon8890

its good motor for DD, what do u mean by good motor?! u should tell us first i want a good motor for.... then we'll let u know.

if u want some power on this engine only u can boost it. or make a mini-me swap and call it a day

nepsGD3

good motor for DD then my question is answered...i do not want to go boost at all, i rather have NA power.
to be specific i meant is it a good motor to go all NA. i want to go back to autox and single cams are not bad unless i want to stay in my class which would be STS. a DOHC motor would put me in another class which i would not mind either. this guy had a CLEAN 90 Si hatch with a single cam in STS and was almost 2 seconds faster than my 2007 Honda Fit. of course his EF was fully spec for STS.

nepsGD3

or make a mini-me swap and call it a day[/QUOTE]

please educate me on this...what is this swap?

sde780

http://www.google.com/search?hl=en&f...&aq=f&oq=&aqi=

It helps to research before asking questions

nepsGD3

thank you...for the help

~sp33~

It would be an incremental increase over the twin carburetor system (if any).

lilsicsoul

http://asia.vtec.net/article/d15b/ read....

~sp33~

I didn't read all of it, but it seemed focused on the VTEC variant. Which isn't what the OP has.

DontDoHonda

Sorry for raising this from 2 years ago, but it most closely relates to what I'm looking at and searching for. We apparently have a d15b with no MPFI, I'm trying to reassure myself, it's tough to find info on.

Is this the plate your talking about?

jlicrx

yes, that looks to me like the block-off plate for the mechanical fuel pump on the carbed engine