Rebuilt the boattail

Discussion in 'My Ride' started by basjoos, Sep 27, 2007.

  1. yab13e

    yab13e Active Member

    It looks really cool, especially from the back. How did you make the rear hatch? Also is it Lexan? Thanks.
  2. basjoos

    basjoos Well-Known Member

    The glazing is Lexan and is attached to a frame attached to the hinges used by the original hatch.
  3. 93Hatch

    93Hatch Well-Known Member

    How much mpg did you gain with the boattail?
  4. basjoos

    basjoos Well-Known Member

    About 6mpg.
  5. 93Hatch

    93Hatch Well-Known Member

    So realistically I could get > 50 mpg in my 93 Hatch with no body work, right?
  6. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi 93Hatch:

    ___Which 93 Civic do you own and yes, it should be possible to hit 50 mpg with a little work on your side of the fence if that auto is capable …

    ___Good Luck

  7. PaleMelanesian

    PaleMelanesian Beat the System Staff Member

    Yes. You'll have to work a little harder with the auto, but it's within reach. Mine's a manual, but it's heavier than the early 90's models, and it's the heavier 4-door. I consider it a bad day if I'm as low as 50.

    Edit: and I have the bigger 1.6L engine, to your 1.5.
    Last edited: Mar 12, 2008
  8. basjoos

    basjoos Well-Known Member

    Get a SuperMID (a scangauge-like device for OBD1 (pre-1996) vehicles) so you can get a real-time display of what mileage your car is actually getting as you drive down the road so you can fine tune your hypermiling techniques. They are $150 from Yoshi, who makes them (he's a CleanMPG member, you can PM him) .
  9. 93Hatch

    93Hatch Well-Known Member

    I assume that the SuperMID will not work on my 2000 Accord? It would be nice to get a scan tool that would work on either vehicle.
  10. Maxx

    Maxx He who posts articles

    Basjoos - Have you done any aero work to the undercarriage? For some reason I was thinking about this on my ride to work today ("I wonder if that guy with the funky civic has undercarriage panels?")... Anyway, if not, you could probably pick up 2-4 mpg.
  11. basjoos

    basjoos Well-Known Member

    I have smooth underbody panelling that covers the entire underside of the car except for a small gap around the muffler (with a fairing behind the flat back of the muffler). Also wheel spoilers ahead of the front and rear wheels, double side skirts between the front and rear wheels (outer side skirt even with the outer edge of the tires, inner side skirt even with the inner edge of the tires), and a mini-boattail behind each rear wheel. The effect of aero mods is accummulative, the contribution of each mod may be small, but the sum of all of the mods together is substantial.
  12. jzed

    jzed New Member

    Great project!

    Two questions...

    1) Do you have problems passing state vehicle inspections with your aero-mods?

    2) Are you going to aero-mod that RV? (Only half joking)
  13. shifty35

    shifty35 Well-Known Member

    Bas, any chance of getting pictures of the underbody work?

    I'm thinking about working some panels up for the Insight, as well as blocking the upper air dam with a carved foam block (or similar).

    The Insight has fairly good underbody work but the whole exhaust is exposed in the center channel - I imagine this is for cooling purposes, but there's no way that exhaust gets that hot.
  14. basjoos

    basjoos Well-Known Member

    jzed - Fortunately my state dropped state vehicle inspections in the early 90's. That RV mainly serves as a guest cottage and is rarely driven, so I haven't had much incentive to aero mod it yet.

    shifty 35 - Since it has low ground clearance, it is difficult to take a good photograph of the bottom of my car, but those that I do have are posted on my photobucket site: Honda Civic/
  15. kc8enb

    kc8enb Member

    wow bit too out there for me but the rear really reminds me of a auburn boattail speedster. i like your new hatch design. your structure for the rear looks quite strong.
  16. basjoos

    basjoos Well-Known Member

    I guess when the Aptera becomes a common sight on the highways, the appearance of my car won't come across as quite so unconventional.

  17. kc8enb

    kc8enb Member

    i had to look up what an Aptera was. looks nice, same day they will be more common. btw what was your underbody skin and how did u deal w/ it around the engine/axles? also did u do a warm air intake? sry for all the noob questions
    Last edited: May 4, 2008
  18. basjoos

    basjoos Well-Known Member

    The underbody is made of coroplast, with aluminum flashing nearIt covers the entire underside of the car except for where it flairs into the exposed underside of the muffler. the exhaust system. I didn't build a warm air intake, but the grill block effectively increases the intake air temp.

    There's nothing new or avent garde about the design of my car, most of its aero is 70 year old technology. This Maybach was running the Autobahn back in 1939.
  19. kc8enb

    kc8enb Member

    max props when i have my grandmother and father emailing me pics of your car sayin "this guy gets over 70mpg, u do something similiar" lol

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