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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 05-05-2007, 09:18 PM   #1
jj94auto
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crx hf vs. civic vx

Just curious, but "generally" which is going to give me better gas mileage?

Thank you for your time.

Hope the question doesn't start a feud!
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Old 05-05-2007, 09:25 PM   #2
SVOboy
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HF is rated higher by the epa, and I would say it would prolly beat out the vx...
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Old 05-05-2007, 09:33 PM   #3
jj94auto
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Yes, I noticed that the hf is rated better by the EPA in the city but they are both 56 mpg on the highway from what I can see.

Just noticed the city part actually.

Thanks for your thoughts on this one!
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92 Protege DX 5 speed - Poor Man's Hybrid 40.96 MPG (city)

Thicker 2 row radiator, walmart hubcaps, Pepboys tires, 10w 30 Castrol HM, Jensen CD player, Roadmaster speakers, ebay hi-flow air filter, autolite 3924 plugs, stant superstat, NGK blue 8mm wires, LeBra car bra, no Exhaust Manifold heat shield, MX-3 Seats, bad A/C compressor
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Old 05-05-2007, 09:34 PM   #4
XFi
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Wink At high speeds?

HF? Not on the highway in my opinion. Around town, more than likely. Either way...they are both great
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Old 05-05-2007, 09:52 PM   #5
Matt Timion
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I'd personally go for the VX for a number of reasons, none of which i'll mention in this post
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Old 05-05-2007, 11:15 PM   #6
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i would like the vx because they look better and they highway is suposidly better
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Old 05-06-2007, 12:38 AM   #7
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The big difference would be finding a VX. CRX HF's that are in half decent shape and not modified are hard enough, but a VX? Good luck. Because they are newer and have a back seat, the VX's also cost more. From what I could find in CA when I was looking for my HF, a clean VX will be well over $3000, a clean HF is between 2-3K.
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Old 05-06-2007, 09:57 AM   #8
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I still say HF, the VX is too tempermental.
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Old 05-06-2007, 11:22 AM   #9
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the HF is older tecnoligy, it has less power and over comes acceleration by being lighter and I would assume slightly more aerodinamic, it also puts out peek toruqe at slightly lower RPM and is thus geared higher to keep the engine running slower in top gear.

The VX uses more advanced tecnoligy to produce more peek horse power at high revs, while keeping the low rev power band more practical for daily driving, alowing it to be a larger heavier car with a back seat, I've driven both my 1985 crx hf, and 1992 civic vx both with slightly more weight then they were designed to carry, and the vx's extra power is nice if you have 5 adults in the car and need to get on the freeway, of course it has it's draw backs, like that extra power needs to be kept on a leash or your mileage goes down quickly, the vx has expsensive part like o2 sensor that seem to be coming to the end of their life cycle.
the only thing that would keep me from wanting to get another CRX HF is that they only used 2 piston rings insted of 3 (or so I hear) and that low compression, and burning oil is a commen problem after 200,000 miles, this is not a commen problem I've heard about in a VX.
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Old 05-06-2007, 08:04 PM   #10
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I'd say they are both awesome for FE...
It depends on how much you value a back seat. The hf is getting up there in years, but if you could find a nice one, they are great cars. very tall gearing!

So far I'd agree that the VX is tempermental. It does have a lot of power and torque for an economy car. I have had one for three weeks and am ironing out all of the problems. well it works fine, gets me from point a-b, but I still haven't got the lean burn to run as smoothly as i would like.
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Old 05-09-2007, 12:11 PM   #11
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in my opinion i would say the HF would be better, i am not biased of course

besides the HF looks alot better than the disgusting 92+ civics (excluding the newest model 06?)
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Old 05-17-2007, 07:17 PM   #12
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I know this is an old thread, but they're both great cars. Vx if you need the space; HF if you like cruising solo or if you're single.

Last edited by pyramid_head : 05-17-2007 at 07:18 PM. Reason: spelling
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Old 05-17-2007, 10:40 PM   #13
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I like them both, but I have always loved CRXs (unfortunately they are a dying breed around here). My pick is for the HF.
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Old 05-20-2007, 11:34 PM   #14
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While I've never driven a 5th generation Civic hatchback, I suspect the VX would be more functional for day to day life. As people said above, the VX has a back seat. It's hatch area is also longer and has a hatch that's more functional for loading and unloading cargo... You should be able to just plain fit more stuff in the VX.
The HF's reduced weight and front anti-sway bar should make it feel more nimble and sporty than the VX. The technology used in the HF engine is a good bit simpler than the VX engine, so you're looking at less stuff to fail, and cheaper repairs if it does. By the way, it uses 2 compression rings and a set of oil control rings, same as the other models.
If you're mechanically inclined, you could swap a VX motor into an HF. The HF's aero with the VX's lean burn engine should give you better mileage than either car could achieve in stock form.
The HF and VX motors are in the same engine family, so the HF's transmission, clutch/flywheel, engine mounts and A/C compressor would all bolt up like stock. The only odd thing would be trimming the timing belt cover to fit the HF's driver's side engine mount. Not exactly rocket science.
The wiring could be a handful, but conversion harnesses can be purchased online if that kind of thing bothers you.
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