 Project lightweight 914!, PO-MANS ELISE! |
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| Greg Bell |
 Jun 22 2005, 11:02 AM
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#1
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Member  Group: Members Posts: 137 Joined: 3-May 05 From: Warner Robins, GA Member No.: 4,024  |
Guys,
I have always been fascinated by lightweight cars (maybe because i am a fat ass). the lotus Elise (the original 96' one) is the standard of what i like. My 914 is my fun car, so it does not need to have any creature comforts other than a windshield, seat, floors and doors. My question is, how fast would a 1800 pound 914 with a 115 hp type IV really be? Any ideas? Plus, what would you guys recommend I do next. I have already stripped and boxed most of the interior, spare tire, tools, loose changes, etc. What should be next on the list. I'm thinking about a header system. I am also thinking about gutting the doors and replacing the bumpers with FG. Plus, I am going to remove the fogs and the center console. Keep in mind, I don't really want to "gut the car" until it is race-only. Think minimalist, not masochist. |
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| Brett W |
Jun 22 2005, 11:25 AM
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#2
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Advanced Member Group: Members Posts: 2,858 Joined: 17-September 03 From: huntsville, al Member No.: 1,169 Region Association: None 
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I had a very similar idea. I wanted to do that to a street car, just light and fast. I have a line on a 72 for 100$ and I may try that with that car.. We'll see if I can find any more time or interest in a four cylinder powered 914.
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| SirAndy |
Jun 22 2005, 11:29 AM
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#3
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Resident German Group: Admin Posts: 41,954 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
what year is the car? pre '73 cars had much lighter doors ...
remove the tar paper from the floor, that's about ~40lbs. FG bumpers and CF deck lids ... depending on the year of the car, you'll need to lose between 300lbs and 400lbs to reach your 1800lbs goal. keep all the stuff you take out and put it on a scale so you know exactly how much you removed ... (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) Andy |
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| ArtechnikA |
Jun 22 2005, 11:34 AM
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#4
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rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
aha. a trick questyion... your top speed is drag-limited. it will be just as fast at 1800 lbs as it will be at any other weight. |
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| mattillac |
Jun 22 2005, 11:52 AM
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#5
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robots! Group: Members Posts: 536 Joined: 27-October 04 From: vallejo,ca Member No.: 3,020 |
how rapidly will an 1800# 115HP T-4 914 ACCELERATE then? maybe we should ask ury914? his probably weighed 1800# at some point in time. (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) |
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| lapuwali |
Jun 22 2005, 11:56 AM
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#6
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743  |
300lbs to get to 1800lbs? The published weights for the '70 1.7 with steel wheels was 1980lbs, which I suspect was with no gas in the tank (100lbs right there). 30lbs by going to 2.0 Fuchs, 40lbs by removing the tar. 70lbs with fiberglass front and rear lids and bumpers. You're now down to 1840lbs with no gas. 115hp gives you 16lbs/hp, which is nice, but not really enough. 15lbs/hp is about enough to vanquish the typical Japanese hot hatch, but you need to get down to around 10lbs/hp to take on things like an S2000, Mustangs, or older Vettes. As I recall, the original Elise was under 10lbs/hp. 180hp is hard to achieve with a Type IV w/o spending serious money. It's easy with a Six, but you actually need to make more, as the Six itself adds weight back. A 200hp tuned 3.0 with the above mods to a '70-71 car should get you there. A 3.2 would do it pretty easily. Now the problem is traction, as you're still using fairly skinny tires, so you'd need wider wheels and tires (more weight), and thus more power to compensate. A mild turbo Soob 2.5 (200-250hp) would really be the ticket, as the Soob engine is roughly the same weight as the Type IV, so you can reach 10lbs/hp pretty easily. |
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| nocones |
Jun 22 2005, 12:09 PM
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#7
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Sportscar lunatic Group: Members Posts: 428 Joined: 17-June 04 From: Santa Rosa, CA Member No.: 2,220 |
6.5lbs/hp with my V8 car, full interior, late doors.
Maybe I should find some early doors and lighten up the interior. Ditch the orig. bumpers and get some CF lids. Hmmm... might be able to get down to 6lbs/hp. All I know is I pulled even with a Mitsu Evo on the highway last night and we punched off. Fourth gear and I left him in a hurry. Rolled off the gas at about 110mph and he looked mighty suprised when he came back along side me. (IMG:http://www.914world.com/bbs2/html/emoticons/driving.gif) The only replacment for displacment is low weight! |
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| SirAndy |
Jun 22 2005, 12:09 PM
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#8
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Resident German Group: Admin Posts: 41,954 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
yes, Leergewicht nach DIN (which means EMPTY weight) ... 1969 - 1972: ========= 914-4: 900 kg = 1984.16 lbs 914-6: 940 kg = 2072.34 lbs 1973 - 1974: ========= 914-4: 950 kg = 2094.39 lbs 1975 - 1976: ========= 914-4: 1000 kg = 2204.62 lbs i'm assuming he wants GAS in his car while he drives it, so adding that to the equation, i estimated ~2100 lbs for a early car and ~2200 lbs for a later car. a '75-76 would be ~2300 lbs ... (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) Andy |
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| Qarl |
Jun 22 2005, 12:21 PM
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#9
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Shriveled member Group: Benefactors Posts: 5,233 Joined: 8-February 03 From: Florida Member No.: 271 Region Association: None |
My Elise has a 10 gallon tank. And it gets 28 mpg in combined city/highway driving...
Put a fuel cell in your car and save some weight. |
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| gopack |
Jun 22 2005, 12:22 PM
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#10
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CHEESEHEAD in CA, MARK Group: Members Posts: 744 Joined: 7-August 04 From: Folsom, CA Member No.: 2,472 Region Association: Northern California |
Don't forget his (self proclaimed) fat ass! that has to clock in at at least 200! (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif)
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| SirAndy |
Jun 22 2005, 12:29 PM
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#11
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Resident German Group: Admin Posts: 41,954 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
what is that supposed to mean? i'm 220lbs and i'm not FAT ... (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) Andy |
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| grantsfo |
Jun 22 2005, 12:36 PM
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#12
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Arrrrhhhh! Group: Members Posts: 4,327 Joined: 16-March 03 Member No.: 433 Region Association: None |
All I can say is that my car which is proabably down to around 1850 lbs without fuel or driver hauls as$ with a stock 1.8 liter engine. ...well its as fast as a stock 2.0. Dont forget to get a lieghtweight flywheel. and remeber you can get a fiberglass engine compartment lid as well.
I'm curious to know how much weight one would lose by using a fuel cell as opposed to the stock tank? Also is there a light weight battery that is reliable for our cars? Oh yeah I weigh 265 lbs |
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| Mueller |
Jun 22 2005, 12:39 PM
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#13
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914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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not fat, but you have a head the size of a prize winning watermelon... (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/hide.gif) |
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| Andyrew |
Jun 22 2005, 12:44 PM
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#14
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Spooling.... Please wait Group: Members Posts: 13,377 Joined: 20-January 03 From: Riverbank, Ca Member No.: 172 Region Association: Northern California
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220? freek! im 155!
thats why its so fast... No replacement for displacement except forced induction. thats my moto! Oh ya, it will feel quick, but by no means fast. Just about 1/2 the cars on the road will be able to stomp you at the traffic light with 1800lbs and 115hp... And if they are new cars, 3/4 of the new cars on the market could smoke you like no tomorrow. Sorry, did I make you feel small? (IMG:http://www.914world.com/bbs2/html/emoticons/wavey.gif) hehehe |
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| SirAndy |
Jun 22 2005, 12:44 PM
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#15
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Resident German Group: Admin Posts: 41,954 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
true, but at least i have a running 914! (IMG:http://www.914world.com/bbs2/html/emoticons/poke.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/flipa.gif) Andy |
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| Andyrew |
Jun 22 2005, 12:47 PM
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#16
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Spooling.... Please wait Group: Members Posts: 13,377 Joined: 20-January 03 From: Riverbank, Ca Member No.: 172 Region Association: Northern California
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OOOOHHHH DIIIISSSED!!!!!!
sorry.... im hyper... |
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| Mueller |
Jun 22 2005, 12:48 PM
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#17
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914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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when Sherryl and I left Marks last Saturday she asked if I'm always "teased" about not having a running 914???...."yea, pretty much"....that has got to change (IMG:http://www.914world.com/bbs2/html/emoticons/headbang.gif) |
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| Andyrew |
Jun 22 2005, 12:50 PM
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#18
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Spooling.... Please wait Group: Members Posts: 13,377 Joined: 20-January 03 From: Riverbank, Ca Member No.: 172 Region Association: Northern California
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| Mueller |
Jun 22 2005, 12:52 PM
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#19
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914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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As seen on a bumper sticker:
I may be fat, but you are ugly and I can always go on a diet (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) lite weight wheels and tires make a huge difference...not cheap however depending on what size you want.....for the bucks, cannot beat the 15" Fuchs (4 or 5 lug) |
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| SirAndy |
Jun 22 2005, 12:57 PM
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#20
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Resident German Group: Admin Posts: 41,954 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
yes, you can ... the 15 x 7 cookie cutters are only 1lbs heavier than the 15 x 7 Fuchs at 1/4 of the price ... (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) Andy |
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