Salutations, fellow gas savers - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 06-04-2009, 10:02 PM   #1
Registered Member
 
Join Date: Aug 2008
Posts: 7
Country: United States
Salutations, fellow gas savers

I just purchased a salvage-title fixer-upper 91 Civic HB .
The plan is to fix it up and get as good a mpg as I can.
The body and interior are rough, but the drive train is
pretty good. It passed smog, and I got 35 and 34 mpg in
the first 2 tank fulls, so I'm happy already.
Hoping to get over 40 eventually, even though I'm stuck with California-formulated gas.

Any suggestions for improvement for this particular
model? Its a DX, so it has DPFI.
__________________

Whitetoy is offline   Reply With Quote
Old 06-05-2009, 07:07 AM   #2
Site Team / Moderator
 
Jay2TheRescue's Avatar
 
Join Date: Sep 2008
Location: Northern Virginia
Posts: 4,657
Country: United States
Location: Northern Virginia
Welcome aboard! I'm looking forward to seeing your progress.

-Jay
__________________

__________________






Jay2TheRescue is offline   Reply With Quote
Old 06-05-2009, 02:59 PM   #3
Registered Member
 
Join Date: Aug 2008
Posts: 7
Country: United States
I'm not going to do anything that will affect safety (like
drafting) since this is a little death-trap compared to
bigger, more modern cars.

I might experiment with some sort of water-injection,
air-damn, grill-block, etc. Might temporarily disable
my EGR to see the effect. Maybe a hot air intake.

The car currently has Woosung tires on it. Ever heard of them?
They have 80% of the tread left, so I hate to swap them if they
have pretty low rolling resistance already. Don't know.
Whitetoy is offline   Reply With Quote
Old 06-05-2009, 03:30 PM   #4
Registered Member
 
theholycow's Avatar
 
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
Discarding tires with good tread to buy LRR tires won't be cost-effective. You may be able to increase your tire pressure without consequence; on most cars it's easy to exceed the car manufacturer's recommended pressure by 10psi without adverse effects (just don't exceed the tire's maximum stamped on its sidewall).

There are plenty of driving techniques that you can practice that aren't dangerous, and drafting does not need to be dangerous. Most of the improvements that can be made cost-effectively are driving techniques; most modifications are too expensive and will never pay for themselves. The ones you described are DIY and cost little or nothing (except maybe the water injection, I'm not too familiar with that one though it has been mentioned before).

As for drafting: It is common for people to cruise at a closer distance than I recommend for drafting. Drafting seems to be most effective at a 2 to 3 second following distance; that is the proper legal following distance taught in basic driver training, and it seems that being closer actually reduces fuel economy, possibly from the difficulty of staying so close or possibly because of the turbulence. The key is choosing the right vehicle; you want a plain full-length box tractor trailer truck. If you can find one that is lower to the ground, that's even better. The length is the important part, because the draft from a longer truck extends further back.

Understand, I'm not trying to convince you that you should draft, just that we take safety as a very important concern here and work our techniques around it.

Is your Civic equipped with a manual transmission, or an automatic?
__________________
This sig may return, some day.
theholycow is offline   Reply With Quote
Old 06-06-2009, 12:39 PM   #5
Registered Member
 
Join Date: Aug 2008
Posts: 7
Country: United States
Quote:
Originally Posted by theholycow View Post
Discarding tires with good tread to buy LRR tires won't be cost-effective. You may be able to increase your tire pressure without consequence; on most cars it's easy to exceed the car manufacturer's recommended pressure by 10psi without adverse effects (just don't exceed the tire's maximum stamped on its sidewall).

There are plenty of driving techniques that you can practice that aren't dangerous, and drafting does not need to be dangerous. Most of the improvements that can be made cost-effectively are driving techniques; most modifications are too expensive and will never pay for themselves. The ones you described are DIY and cost little or nothing (except maybe the water injection, I'm not too familiar with that one though it has been mentioned before).

As for drafting: It is common for people to cruise at a closer distance than I recommend for drafting. Drafting seems to be most effective at a 2 to 3 second following distance; that is the proper legal following distance taught in basic driver training, and it seems that being closer actually reduces fuel economy, possibly from the difficulty of staying so close or possibly because of the turbulence. The key is choosing the right vehicle; you want a plain full-length box tractor trailer truck. If you can find one that is lower to the ground, that's even better. The length is the important part, because the draft from a longer truck extends further back.

Understand, I'm not trying to convince you that you should draft, just that we take safety as a very important concern here and work our techniques around it.

Is your Civic equipped with a manual transmission, or an automatic?
Thanx for the response.

I have always been mpg-aware, so my driving techniques are already
pretty good (don't speed, coast up to stops, accelerate slowly, etc.)

Drafting has other issues. Can't see whats ahead, like an accident.
Big rigs throw up bigger rocks into your windshield. I was on a trip
recently (in a rental car) and had 2 rocks hit the glass from nearby
trucks, 2 days apart. Had to pay for a new windshield when I turned it in.

The car has a 4-speed automatic, but since the final gear ratio is almost identical to that of a 5-speed, and its got a lock-up torque converter, it shouldn't affect the highway mileage.

I agree with your assessment on the tires. I'll keep them until they wear out.
Whitetoy is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
customizable graph newedb Fuelly Web Support and Community News 2 08-16-2011 07:13 PM
Matching EPA Type to My Car DastardlyDan Fuelly Web Support and Community News 2 10-26-2009 07:16 AM
Hydrogen or H2O Systems 1Jal1 General Fuel Topics 4 10-11-2008 02:20 AM
Why did it take me so long to find this place? Baranfin Introduce Yourself - New member Welcome 6 05-31-2008 05:17 PM
An American Perspective on Driving in Canada rh77 General Discussion (Off-Topic) 28 03-24-2006 10:42 PM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 05:41 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.