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General Fuel Economy Discussion Ask the gas gurus about increasing fuel economy. Post ideas and ask for advice. For testing help, use the "Experiments" forum.

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Old 05-22-2006, 11:17 PM   #1
Bunger
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D15Z1 CRX Hf

Well I thought I might as well toss up some pics of what my CRX is looking like these days. Let me just say that its a little messy, time has been short lately, thank god for cellular internet and a laptop. =)

Engine bay from the drivers side:



Engine bay from passenger side:



Engine bay from the front (note the giant radiator... such a waste):



The stock d15z1 drivers side mount isn't a perfect fit, I think I'm going to see if a stock d16a6 or such mount will work in its place, but this will do for now:



This is a view of the inside... yea... like that rats nest of a wiring harness over there? I am still working on the last code or 2. Note the full tank of gas:



Since the car doesn't weigh much... there is a bit of wheel gap, even with stock suspenion... oh and I wasn't the one that painted those calipers:



Can we say "ground clearance"?:



On my first test, I worked out 62mpg, but this isn't super accurate, as there weren't many miles to base this off (210 I think). I'm gunna be driving it to work this week, so maybe by sunday I'll have an update on the mileage. Thanks for looking!

Last edited by Bunger : 05-24-2006 at 12:11 PM.
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Old 05-22-2006, 11:41 PM   #2
Matt Timion
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Quote:
Originally Posted by Bunger
The stock d15z1 drivers side mount isn't a perfect fit, I think I'm going to see if a stock d16a6 or such mount will work in its place, but this will do for now:


I was warned about this. Do you think there will be such a problem with a JDM d15b (z1 equivilant) ?

I also have a driver's mount from a 92 DX. Do you think that'll work alright?
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Old 05-23-2006, 06:51 AM   #3
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I wasn't warned about it!

Bunger, you want my old coilovers?
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Old 05-23-2006, 07:33 PM   #4
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Quote:
Originally Posted by SVOboy
I wasn't warned about it!

Bunger, you want my old coilovers?
Talk about built in FE. I'm jealous!

I have old coilovers also as I went back to the stock springs over the weekend. If you want' em you got' em. Too bouncy for me.
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Old 05-23-2006, 07:38 PM   #5
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My mother wants me to get rid of my coilovers.

Dan, we'll be building in somma that for you soon,

How much did you spend ont he z1, bung3r?
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Old 05-23-2006, 08:05 PM   #6
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Quote:
Originally Posted by SVOboy
My mother wants me to get rid of my coilovers.

Dan, we'll be building in somma that for you soon,

How much did you spend ont he z1, bung3r?
Why does yo mama want you to ditch the coilovers?
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Old 05-23-2006, 08:08 PM   #7
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Cuz she keeps stepping on them in the garage.
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Old 05-23-2006, 08:35 PM   #8
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lol. That sounds like my dad. He is constantly telling me to do something with all the saturn parts i have in the garage.
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Old 05-23-2006, 11:05 PM   #9
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haha same thing happened to me. my dad mentioned getting rid of a set of rims i had in there. the bronze hx rims. but in a 3 bay garage when my stuff only takes up half of a bay, its really hard to push me to do anything as far as clearing stuff out.

anyway i ended up trading those rims out for another set up unpainted hx rims. which are now on the car.

anyway, clean swap bunger
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Old 05-24-2006, 02:51 AM   #10
Matt Timion
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Quote:
Originally Posted by thisisntjared
anyway, clean swap bunger
Definately. Makes me want to do a wire tuck.
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Old 05-24-2006, 02:52 AM   #11
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Bunger, where is the fuel filter? Do you do an in-line filter?
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Old 05-24-2006, 12:07 PM   #12
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Quote:
Originally Posted by SVOboy
How much did you spend ont he z1, bung3r?
$0... picked it up like 3 years ago for the wideband O2. I actually got it from the Benen Industries guys, I wonder what happened to them?

I'll take a set of coil-overs... I need to get this thing down a few inches =)

The wire tuck isn't 100% complete, started it like 3 years ago, but I used to always get compliments, I guess its more common place now?

Yep, in-line fuel filter... for that cleaner engine bay... of course I need to put back some kind of charcoal canister, the breather line on the fuel tank is venting inside the cabin... smells aweful sometimes.

There is a ton of dirt in the engine bay right now, I really need to clean it, I think it looks messy. =)
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Old 05-24-2006, 12:39 PM   #13
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Quote:
Originally Posted by Bunger
Yep, in-line fuel filter... for that cleaner engine bay... of course I need to put back some kind of charcoal canister, the breather line on the fuel tank is venting inside the cabin... smells aweful sometimes.
uh.... thats really really really bad. its soo bad it gets three 'really's
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Old 05-25-2006, 04:04 PM   #14
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Yes, I would like a charcoal canister on your car,

I need to find my oil leak, it's not too old, I wonder where it could've come from, I'll have to look, I guess.
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Old 05-25-2006, 04:36 PM   #15
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Yea, I've got plans this weekend to go get a new breather line from the junkyard and install the charcoal canister... heck I might even hook up the purge solenoid too. =)
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Old 05-25-2006, 04:38 PM   #16
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Please do, the environment hates you.
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Old 05-31-2006, 03:20 PM   #17
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I have considered this option myself many times as I have an '89 HF that needs an overhaul and I thought why not upgrade to more power AND more MPG? My question is mainly on the swap...how difficult is it to do? fitment issues? Especially, what wiring issues did you have (are still having)? Has this setup been reliable? Any info or sources of info would be appreciated, I can't find any info on swaps unless it includes going from the lowly (hp-wise) d-series to the more popular b or k-series Honda engines. Mak
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Old 05-31-2006, 04:31 PM   #18
Matt Timion
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Quote:
Originally Posted by MakDiesel
I have considered this option myself many times as I have an '89 HF that needs an overhaul and I thought why not upgrade to more power AND more MPG? My question is mainly on the swap...how difficult is it to do? fitment issues? Especially, what wiring issues did you have (are still having)? Has this setup been reliable? Any info or sources of info would be appreciated, I can't find any info on swaps unless it includes going from the lowly (hp-wise) d-series to the more popular b or k-series Honda engines. Mak
Hey Mak,

I'm doing this exact swap right now into my 89 sedan. Should be the same as swapping into your HF, with one exception. You won't have to wire up MPFI as your car already has it.

Check out this thread for my progress:

http://www.gassavers.org/showthread.php?t=875
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Old 06-01-2006, 12:20 AM   #19
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The other thing about the charcoal canister is that they help mileage. The fumes are flammable, and it automatically compensates for it.

No idea how much it helps, but it's probably a decent amount.
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Old 06-20-2006, 12:33 AM   #20
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Just got rid of the last check engine light tonight! Now just gotta get the charcoal canister on there.
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Old 06-20-2006, 02:07 AM   #21
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Dude, can you explain to me where in the hell your wires are at? I just finished wiring mine up and wires are everywhere... and my wiring is rather clean too.

BTW, I'm going to need help routing vacuum hoses tomorrow. Can you help?
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Old 06-20-2006, 10:53 AM   #22
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Quote:
Originally Posted by Matt Timion
Dude, can you explain to me where in the hell your wires are at? I just finished wiring mine up and wires are everywhere... and my wiring is rather clean too.

BTW, I'm going to need help routing vacuum hoses tomorrow. Can you help?
I did hidden wiring on my car a number of years back, so lots of stuff is routed through the fenders and such and everything else is pulled into the cabin. I need to spend some time and clean up the cabin wiring though.

I can help you with any vacuum stuff, I've pretty much got that memorized by now. =)
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Old 06-20-2006, 10:58 AM   #23
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Quote:
Originally Posted by Bunger
I can help you with any vacuum stuff, I've pretty much got that memorized by now. =)
I'll post up some pictures in an hour or so and hopefully you can help based on that.
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Old 06-20-2006, 11:00 AM   #24
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Quote:
Originally Posted by Matt Timion
I'll post up some pictures in an hour or so and hopefully you can help based on that.
I'll do my very best!
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Old 06-20-2006, 11:04 AM   #25
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The swap looks great!

I don't know how you live without a radio though, I think I would go crazy.

My driver's side mount looks the same way. It's tilted towards the front, like it's not at the correct angle. I don't see any ill effects from this though, so I don't worry about it.

Just curious, what class did you used to race in?
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Old 06-20-2006, 11:09 AM   #26
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Quote:
Originally Posted by 90CivicStandard
The swap looks great!

I don't know how you live without a radio though, I think I would go crazy.

My driver's side mount looks the same way. It's tilted towards the front, like it's not at the correct angle. I don't see any ill effects from this though, so I don't worry about it.

Just curious, what class did you used to race in?
I've had so many cars now without interior or radio that I'm used to it. It does suck for long trips though (tracks that are far away).

I used to race in CSP, GSP, ITA, and H1. I've also done a bunch of HPDE events in the past. I haven't been very active in the years past, but I was seriously thinking about racing the HF D15z1... =)
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Old 03-01-2007, 03:51 AM   #27
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I drove my b18c powered CRX the other day... wow, I can't believe the difference in power and the gears feel SOOO short. Anyways, I've mad some changes to the HF, finally got a set (not great) of HX's on it with some Kumho tires. The car isn't pulling to the left anymore (got it aligned before the tire change and it still pulled), and I swapped in a smaller radiator and got all the bugs worked out. It feels like I can drive forever on $5 of gas.
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Old 03-01-2007, 08:39 AM   #28
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Well, you certainly have turned in an impressive tank there...
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Old 03-01-2007, 08:55 AM   #29
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No kidding. Bunger: you need to describe your typical commute/driving style/speed/techniques.
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Old 03-01-2007, 11:50 AM   #30
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Bunger: Very Impressive! I know you are running a Z1 in and HF chassis. Are you running an HF gearbox? What ecu version are you using.
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