EGIan

Hey guys,

I was wondering if there is any way to get a JDM D15B Service Manual. If it doesn't exist, would the USDM one do the same thing, or close to ? If anyone could give me a lead I'd appreciate. (JDM/USDM)

Thank you,

94EGKUSH

If im not mistaken the d16z6 is the same Engine as the JDM d15b Vtec.
Anything you need for your d15b just ask for the 92 Si or d16z6 parts!

trustdestruction

It's not.
It's very similar though.

A JDM D15B is kind of like the cross between a D15Z1 and a D16Z6.

94EGKUSH

Dude everything on the d15b is stamped p28.
The only diffrence is its a 1.5 liter block and Suposably is had a more agressive cam.(i call bullshit) but other than that just use anything from a d16z6. ive had one and every gasket, part, ect. ive used a d16z6 part and the Fit! most d series are the same anyways!

EGIan

Awesome, thanks ! I already have the D16Z6 manual, anyone need, just ask.

trustdestruction

Which would make it not the same as a D16Z6...


I never said parts wouldn't work. I just said they're not the same engine.

94EGKUSH

Ask any one! or research!

THESE TWO ENGINES ARE BASICALLY IDENTICAL!

trustdestruction

"The engine is essentially a D16Z6 head from the Si mated to a D15Z1 block from the VX, but with a different crankshaft and pistons than either, it also has a more agressive cam than the D16Z6."

https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/d15b-vs-d16z6-differences-2359790/

94EGKUSH

Umm first of all ive used a d16z6 water pump and timing belt for the d15b.
Yea the d15b is a d15z1? but yet you cant mate a d16z6 head to it because i wont have enough compression to make power. get me a dyno sheets that prove the d15b make more power than the d16z6! The d16z6 rates at 125~ hp(at the flywheel) on 87 octane, in the other case the d15b rates at a 128~ on 93 octane. Research then come back, ive had both engines with the same ex/si tranny and same everything and yet they both feel the same.

trustdestruction

of course they "feel the same," it's only a 5BHP difference. d15b is 130hp, btw

pistons are different, as is the crank, and the cam.
here's the piston specs between the two engines.
"a d16z6 piston is 60mm tall overall, now measuring from the top edge of the piston downwards to the center of the piston pin bore we get the compression height of the piston-30mm. That means the space is 30mm long.
a d15b vtec piston is 57.65mm tall overall and has a compression height of 27.75mm"

http://www.d-series.org/forums/archi...hp/t-9062.html

I already did. I proved you wrong with research to back it up, and that still isn't good enough for you.

CivicSpoon

94EGKUSH.... You're wrong and have no clue what you're talking about. You should do some research before you start spouting off info and then call people names.

The heads are the same, and all parts are interchangeable with that. But there is a reason why there is a difference in displacement. The OP never mentioned exactly why they needed the manual, what if they needed it for an engine rebuild? Do they use all D16Z6 parts and specs? No, because they wouldn't get their engine back together properly. The crankshaft is completely different, as well as the main bearings (you use USDM D15B7 bearings). But the rods ARE the same as the D16Z6, so you use the bearings for the Z6.

Here's some more links for anyone trying to find more specific info:
http://www.d-series.org/forums/showthread.php?t=32597
http://www.d-series.org/forums/showthread.php?t=17840

94EG8

This right here tells me you've never actually looked at the castings. If you had you'd know that both the D15B Vtec and the D16Z6 head and intake manifold are stamped P08.

Timing belt and water pump both come from a D15Z1, for anyone who wants to know how I know this I own a D15B Vtec, and i've replaced the timing belt and water pump, and to make my own confirmations and dispel any myths I counted the teeth on the original honda timing belt, 103 teeth, same as VX. The cam is debateable, but until someone wants to give me a Z6 cam and D15B vtec cam to compare we'll leave it at that.

If you research you'll find exactly what me and everyone else here is telling you.

They're similar. I'd call a JDM SOHC Vtec ZC basically identical to a D16Z6, the only real difference being the lack of a purge solenoid on the ZC.

These people aren't wrong, believe me.

attica

d15b has 130 hp

trustdestruction

Since this thread was brought back from the dead, I want to confirm and elaborate on some information, specifically about the D15B head. I swapped a D15B head onto a D16Z6 block and ran into some timing trouble that I resolved, but learned a lot in the process... So, I want to confirm that the camshaft is in fact different.


This information is provided by Bisimoto himself:

• D15B and D16Z6 have the exact same cam profiles on the primary and secondary intake lobes
• The share the same exhaust profiles
• THEY DO NOT SHARE THE SAME LOBE SEPARATION
• The intake lobes do not share the same reference opening and closing numbers in relation to keyway centrelines. Same goes for the exhaust.
• The intake lobes are significantly retarded in the D15B vtec engines in comparison to the D16Z6.
• The D15B exhaust lobes are slightly retarded in comparison to the Z6.

http://www.**********.com/showthread.php?t=2291

**********="one cam only" (no spaces).... not sure why it's censored here


So, because the lobes are retarded compared to the D16Z6 cam, to put a JDM D15B head on a D16Z6 block, you have to use a D16Y8 cam gear to correct the timing issues. There is a half-tooth difference.


Aside from the cam, pretty much everything is the same (well not exactly, by part number, I don't think), but extremely similar. The head casting is identical however.


By the way, the information in this thread only applies to the OBD1 JDM D15B VTEC. There are also a few other kinds, that this information does not apply to. There is also an OBD1 JDM D15B VTEC-E, an OBD2 JDM D15B 3-stage VTEC, and an OBD0 JDM D15B non-VTEC.

attica

why would you want to use the d15b head on a d16z6 block?? i got the d15b block with the d16z6 head.

94EG8

Its the same head (assuming its an OBD1 D15B Vtec), just has a slightly different cam.

nothing_shocking

The D15 more than likely has less miles on it. That's why I'll be using it. That is until I can afford a set of titanium springs and the rest of the head building goodies.

trustdestruction

Because the d15 has a better cam... Are you sure you realize that this is about a JDM D15B we are talking about, and not something like a d15b7

attica

yeah the D15B JDM no z6 or d15b2 nothing like that just a d15b thats what i have. and im going to rebuild it because i need new piston rings. and there is a kit on ebay for 250 bucks. can i use this for the rebuild???
http://cgi.ebay.com/ebaymotors/Honda...Q5fAccessories

attica

the reason why im asking is because i do not see them saying it will work for a d15b
1988-1995 1.5L HONDA CIVIC DX, S, LX D15B1, D15B2, D15B7 SOHC 16V
1988-1991 1.5L HONDA CRX DX D15B1, D15B2 SOHC 16V

1992-1995 1.5L HONDA DELSOL S D15B7 SOHC 16V

trustdestruction

no, it will not fit, and i wouldn't trust that off-brand crap anyway.
You're not going to find a rebuild kit for the JDM D15B. Gonna have to piece one together yourself.

here:
http://www.d-series.org/forums/natur...-official.html

first post sums it up, but if you read the whole thing you'll learn a lot


btw, d15b is 128.7bhp, not 130 bhp. you are mistaken for its 130ps rating (which = 128.7bhp)... (i know i said 130bhp a while ago in this thread... but that was a mistake)

attica

every one talks about the d15b with 130 HP but its close to 128.7 round up and u have 130 lol j/k thanks for the info

attica

where can i get these parts going to be doing a rebuild on my d15b and i dont know where to get the stuff

trustdestruction

i'm not sure, they probably cross-reference with some USDM parts but i'm not sure which. If you read the thread you will find out

attica

http://www.hondaoriginalparts.com/ho...block_03=15004
this is for the vti