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Cougar289 gets his hands on yet another D series

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Cougar289 gets his hands on yet another D series

Postby cougar289 » Sun Oct 30, 2011 2:28 am

Unfortunately not too many pics this time, was highly pressed for time (1.5 days!!) A coworker of mine has a 95 civic with a D16Y8 swap, well BIG surprise it spun a bearing, go figure junk ass y7/y8 bottom ends. That was his only transportation, so he needed to figure out something quick. I overheard him talking about his car making a loud knocking noise to the boss...little did he and my other coworkers know, I've just so happened to tinker around with the D series occasionally.

He begins to panic wondering how he's going to get to work and school. So me being the worlds only friend to the D15, I say hey screw that D16 bottom end, and lets throw in a D15 bottom end. He had no idea this was possible, so I explained how the "mini-me" worked, how it would raise compression, and the shorter stroke would allow it to rev faster...he agreed, and the project was on. I located a D15B7 off of a local, and then proceeded to pull the D16Y8. 2.5 hours later, the y8 was sitting on my garage floor, and I was removing the top end parts and transmission. The D15B7 shows up, and I begin inspecting it. Very clear cut crosshatching in the cylinder walls, mostly clean pistons, my guess was 95,000 miles on it maximum.

Very oddball setup when using a Y8 head for a mini-me. Nine headbolts are D15, one is Y8. D15 cam gear, and Z6 timing belt.

The head gasket, intake, and exhaust gaskets were a day out...so work didn't proceed until the next day. It took me 7 hours to reassemble the top end, get the flywheel, clutch, transmission swapped, and drop the engine into the car. I felt like I was on one of those garage TV shows where the guys are scrambling to get the thing assembled.

The fastest swap and top end teardown I have ever done...and I don't plan on repeating it very soon! I prefer slow and steady swaps.
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Re: Cougar289 gets his hands on yet another D series

Postby el_jelly » Sun Oct 30, 2011 6:45 pm

It's already running? :colors:
IHeartMySTD wrote: We all know we like our women and cars with D's, not B's!!!! ;)

Where most of the questions are already answered > Engine swap guide, FAQs and Index thread
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Re: Cougar289 gets his hands on yet another D series

Postby cougar289 » Sun Oct 30, 2011 10:28 pm

Runs and drives great, my coworker loves it, and I'm satisfied with it. I surprised him with it last night, pulled into work in it, he was thrilled to say the least 8)

Here's the few pics that I do have:

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He offered me $300 for the time and labor. I happily declined.

Next up, I'm building a DPFI fuel economy D15B1 from the ground up...more on this later
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Re: Cougar289 gets his hands on yet another D series

Postby 91EFbluehatch » Sun Oct 30, 2011 10:56 pm

dammit boy haha!!

nice progress on getting a friends car running.

please explain the single y8 headbolt though?
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91 CIVIC hatch. b16a2 in the works
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Re: Cougar289 gets his hands on yet another D series

Postby cougar289 » Sun Oct 30, 2011 11:36 pm

Well, a little info first: the D15 headbolts are longer than the Y8 headbolts. 3/4 to 7/8th inches longer. The non-vtec D15 head has the raised headbolt pedestal on the back left corner next to the distributor, you may have noticed it if you've ever serviced a non-vtec head. The y8 head does not have that raised pedestal, therefore the single D15 headbolt would be too long and would bottom out in the threads before making contact with the head.

The Y8 head is taller than the D15 non-vtec heads, so therefore the shorter Y8 bolts will not work. If you attempt to mini-me with a y8 head and all 10 y8 head bolts, you will pull the threads out of the block when attempting to torque the bolts.
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Re: Cougar289 gets his hands on yet another D series

Postby gtviper2178 » Mon Oct 31, 2011 3:17 am

when it comes to D series work, cougar comes on top ;)
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Re: Cougar289 gets his hands on yet another D series

Postby 2 Stroke Toy Chest » Mon Oct 31, 2011 10:18 am

hopefully it itches him enough to get another one of his own O0
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Re: Cougar289 gets his hands on yet another D series

Postby cougar289 » Mon Oct 31, 2011 2:02 pm

A few weeks ago I borrowed a friends 4g hatch....which just so happened to by my old 4g! I was making a 300 mile roadtrip, I didn't want to ride the bike that far, and definitely didn't want to drive my gas guzzling Blazer. I'd forgotten how little fuel 4g's use!

So now I'm putting together a 70hp D15B1, a total bare block rebuild. With a 4 speed transmission :D I'm hoping for 45mpg on the interstate
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Re: Cougar289 gets his hands on yet another D series

Postby 91B16AHB » Mon Oct 31, 2011 2:23 pm

gtviper2178 wrote:when it comes to D series work, cougar comes on top ;)

high compression ftw.
(when he's not blowing em up) ;)
And will an acura crx seat on the 90's era fit my 90 dx?
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Re: Cougar289 gets his hands on yet another D series

Postby gtviper2178 » Mon Oct 31, 2011 2:25 pm

lol well certain things are gonna be a hit and miss.
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Re: Cougar289 gets his hands on yet another D series

Postby cougar289 » Tue Nov 01, 2011 12:22 am

I've been wondering about that high compression d15 I built. I reviewed the timing maps again and again, it really shouldn't have been enough to cause pinging with the proper octane. I'm starting to wonder if it was the shit gas they sell around here that caused it to crack ringlands at 7000 miles. Or if it was too much for factory pm3's...hmm
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Re: Cougar289 gets his hands on yet another D series

Postby gtviper2178 » Tue Nov 01, 2011 2:28 am

did you use a knock sensor or deleted that?
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Re: Cougar289 gets his hands on yet another D series

Postby cougar289 » Tue Nov 01, 2011 4:39 am

Nope, no knock sensor on the obd-0 D15/D16's....obd-1 either as a matter of fact.
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Re: Cougar289 gets his hands on yet another D series

Postby gtviper2178 » Wed Nov 02, 2011 2:37 am

that could have lessened the life of the rings since the ecu is not adjusting to the gasoline since its not sensing the amount of pings.
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