my '91 CRX build (MPG related plans, projects, and updates)

[Arragonis]

+1 with the car birthday candles - I might have to do one for every 100K miles though...

What is original vs replaced on her ?

[jakobnev]

Wow, 300000 miles, and not even half a tank!

[shorty_boy]

Cherish, congrats, Lucy and My Crx are not at 300000. We have engine swaps though ... i did finally get a chance to craft a prototype adapter for my ECU. It itles rough still when cold but smooths out when warmed up. Also with 50% less fumes!

[myrefugeisintheLord]

Well, it's been a full year since I've worked on this thread.... Let's just say I've been temporarily distracted.

In reality the CRX is pretty much the same as it was last year. We're at 306K miles, and there's talk of a rebuild in the near future. I personally don't think he NEEDS it, but it wouldn't hurt, and I may have a willing teacher. When the engine comes out, I'm going to replace many things. All hoses, all belts including the timing belt, clutch, and ANYTHING else I see that needs to be replaced.
Tomorrow, I'll be meeting with a friend to start working on the CRX. My friend has a lot of ideas for ways to improve my mileage, and cool stuff too. I'll try to remember to take pictures, and keep this thread up to date!

[myrefugeisintheLord]

Just before Christmas we finished the engine rebuild. It was SUPER fast!! It took us probably a total of 14 hours, and most of that time was spent cleaning!

I decided to go with a different block, mostly because I needed to make the down time as short as possible for the guy helping me. He found me a nice D15B2 engine on Craigslist, which is one of the most similar engines to the original D15B6 HF engine. The D15B7 being the closest match. I know that means my mileage will go down some, but I still have the B6 engine to rebuild later. We bought many new parts for the rebuild, either OEM, or as good as OEM parts. We used all of my HF parts around the engine.
New clutch too, as mine was pretty worn out.

Because the build was so fast, I don't have many pictures. Here's what I do have.









All finished. The break in has been going well. I will need to do an oil change soon. At 300 miles I started noticing a noticeable difference in available power. This engine has more horse power for sure. Between the new engine and clutch, my CRX is crazy fun to drive now. I'm anxious to find out the mileage, but I haven't been driving it in the snow. So I'll have to be patient.

[nemo]

Look like it was a fun project. Wise descision to replace the clutch while it was already apart. Enjoy!

[shorty_boy]

Any new updates post engine build and swap?

[BabyDiesel]

I'm quite curious as well. This is/was/still is a sweet project! I especially like the write-up on the MPGuino. That alone has persuaded me on where to put mine when it gets here

[California98Civic]

Me too. Would love an update.