four motors, one build.

D15, D16, D17 and Mini-Me swaps
 Reply
User avatar

four motors, one build.

By OmarG
- Fri Mar 19, 2010 4:29 pm #182315 I just ran into some luck, and I'm now the proud owner of:


A D16y8 (no valve cover, dizzy, or the thingy that covers the actual cam) Supposedly had some sort of running issue before it was pulled, like a sensor or something. The head is fine.

A D15b7 Needs to be clean out (rained in) But it ran strong when it was pulled

A JDM D15B. It looks great, but the crank is bad.

I have a running D15B7 in my car now. Here's the deal. I want to rebuild the JDM D15B using the good parts from the other three motors. Completely overhaul the motor. I'm no mechanic, but my friend's dad is, and he owns a shop. He's willing to teach me how to rebuild the motor, and supervise things. So that's cool.

What should I do guys? I need ideas here. What parts (from the other two engines) should I utilize on this motor? I'm planning on using a thin head gasket, to hopefully bump the compression, and eventually, adding some juice to the mix via a 35-50 shot setup.


Some pics of the motor (the D16 is in the car, the D15B is the other one, obviously. lol) http://www.facebook.com/album.php?aid=161144&id=681816786&l=eef4184862
User avatar

By forcefedEG
- Fri Mar 19, 2010 5:31 pm #182327
teal_dx wrote:The easiest thing to do would be to put the JDM D15B head on the y8 bottom end, assuming the y8 bearings & internals are fine.


agreed the jdm d15b cam is supposed to be a little more agressive :thumb:
User avatar

By OmarG
- Sun Mar 21, 2010 4:01 am #182642 upon further inspection, The D16's block has a hung rod...

Wonnnnnderful... I can just pop the crank in from the donor D15b7 into the JDM D15B right? I really want to try and use the D15B block anyways, seeing as it has that sexy JDM block stamp, lol.

How do I clean the heads? They have all that nasty crusty oil caked on them.
User avatar

By teal_dx
- Sun Mar 21, 2010 4:32 am #182646 upon further inspection, The D16's block has a hung rod...

Wonnnnnderful... I can just pop the crank in from the donor D15b7 into the JDM D15B right? I really want to try and use the D15B block anyways, seeing as it has that sexy JDM block stamp, lol.

- No the D15b crank should have larger dia. journals/bearings than the D15b7, I'm not 100% sure on this though.


How do I clean the heads? They have all that nasty crusty oil caked on them.

- Take the head to a machine shop and have them hot tank it. It's about $40 and will look brand new after.
User avatar

By d-mon
- Mon Mar 22, 2010 4:25 pm #182871
teal_dx wrote:- No the D15b crank should have larger dia. (ROD)journals/bearings than the D15b7, I'm not 100% sure on this though.


that is correct.
main journals are the same as usdm d15's
but if you reall want the 'sexy JDM stamp' you can put the b7 crank, rods, pistons in the jdm block.
recommend new, bearing rings, and a hone if you go that route
otherwise just do a mini-me and keep the other b7 bottom in case it gets all blowed up!
User avatar

By OmarG
- Mon Mar 22, 2010 4:34 pm #182872 Oh ok, so the crank won't work unless I reuse the b7's internals too?

I can't wait to get started on the build. My non-vtec single cam is still trudging along, but it's a turd going up hills.

I've never been the proud owner of ANY vtec motor, so this is a huge deal for me.
User avatar

By d-mon
- Mon Mar 22, 2010 10:14 pm #182953
OmarG wrote:Oh ok, so the crank won't work unless I reuse the b7's internals too?


if you mean the d15b7 crank, then yes.
if you use the y8 head, use the b7 distributor.
if you use the jdm d15b head, use the distributor that came with it.
User avatar

By eg84dr
- Tue Mar 23, 2010 12:24 am #182991 d15b block with all the b7 internals
2 layer y8 head gasket
d15b head
mild port and polish
this will be a 10.54 to 1 compression and will be fun and perfect for nos :thumb: :thumb:
User avatar

By OmarG
- Tue Mar 23, 2010 3:35 pm #183126
eg84dr wrote:d15b block with all the b7 internals
2 layer y8 head gasket
d15b head
mild port and polish
this will be a 10.54 to 1 compression and will be fun and perfect for nos :thumb: :thumb:


Winner! This was my line of thinking. :) Thanks for the info. According to one of my buddies, I might have to trim some of the casting from inside the JDM D15b block to get the D15b7's crank to fit properly. I don't know if this is correct, but I'm willing to find out.

Where the hell is SuspendedHatch when you need him? LOL.
User avatar

By eg84dr
- Tue Mar 23, 2010 3:45 pm #183133 haha yeah
im pretty sure evrything will fit right in
i havnt taken my d15b apart but as far as i know its just the internals are difrent
keep us updated
pics would be awesome :thumb:
User avatar

By d-mon
- Tue Mar 23, 2010 8:58 pm #183206
OmarG wrote:
According to one of my buddies, I might have to trim some of the casting from inside the JDM D15b block to get the D15b7's crank to fit properly. I don't know if this is correct, but I'm willing to find out.

no. that is not true.
kick him in the nuts the next time you see him.
User avatar

By eg84dr
- Tue Mar 23, 2010 9:01 pm #183207
d-mon wrote:
OmarG wrote:
According to one of my buddies, I might have to trim some of the casting from inside the JDM D15b block to get the D15b7's crank to fit properly. I don't know if this is correct, but I'm willing to find out.

no. that is not true.
kick him in the nuts the next time you see him.

hahaha i agreee
User avatar

By Classiccarsrule85
- Tue Mar 23, 2010 9:27 pm #183213 I cant wait to see what you come up with im planning a similar motor build from the junkyard of d series ive aquired lol...
User avatar

By OmarG
- Wed Mar 24, 2010 12:13 am #183246 Will do guys. I'll keep you all posted on progress. For now though, I'll use this as a place to ask questions I come up with. lol.
 Reply
Return to D Series