 fuel, fuel injection or duel webber |
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| markasap |
 Mar 24 2005, 11:36 PM
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#1
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Member  Group: Members Posts: 111 Joined: 24-March 05 From: topanga ca Member No.: 3,811  |
what is the best setup for a stock 914 2.0L motor
1 fuel injection 2 single 2 barrel webber 3 duel 2 barrel webber what are the pros and cons the best overall proformance Thanks Mark |
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| chilli |
Mar 24 2005, 11:39 PM
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#2
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Older Than Dirt :-) Group: Members Posts: 220 Joined: 24-March 05 From: Sacramento, CA Member No.: 3,805 |
(IMG:http://www.914world.com/bbs2/html/emoticons/cool.gif) IMHO the stock fuel injection is far superior than carbs, whole bunch less hassle. Of course this is based on the fact the fuel injection has been maintained and works like it is was desiged, and has not been messed with buy someone how does not know to tweek it.
mike (IMG:http://www.914world.com/bbs2/html/emoticons/driving.gif) |
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| Jake Raby |
Mar 24 2005, 11:42 PM
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#3
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Not a fan of stock injection here... But I like to cut and modify everything I see..
Dual carbs or Aftermarket injection.. Carbs are not a hassle if you understand tham and can tune them and primarily set them up right initially... Thats the main reason why people don't have good luck with carbs because they are not set up right.. |
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| ArtechnikA |
Mar 25 2005, 07:18 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 |
it's "dual"
it's "Weber" it's a very complicated subject that can't be covered in one thread on ANY forum. each has its place, its pro's and con's, must be properly matched to the engine, cost is always a factor, and legality (emissions or competition class rules) sometimes is. there are dozens of excellent books and articles that cover all this stuff in the depth it requires. oh - welcome to the club ! |
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| Bleyseng |
Mar 25 2005, 08:45 AM
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#5
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Aircooled Baby! Group: Members Posts: 13,034 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
Stock FI in good condition is much nicer than dual carbs any day. Car runs better, starts instantly, good cold running etc....
Carbs are for modified engines..... Aftermarket EFI is good too but costly. Geoff (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) |
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| JoeSharp |
Mar 25 2005, 08:52 AM
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#6
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In Irvine, Ca. May 15-18 Group: Members Posts: 3,947 Joined: 9-July 03 From: DeLand, Florida Member No.: 898 Region Association: South East States |
I think this is a very personal thing. In the last year I have spent over $1,000.00 on parts and almost that much on tools for the D-Jet. I have also scraped an L-Jet system for dull singel 40 Solex sorta like the factory. If you understand carbs stick with them, if you like the D-Jet or L-Jet and you understand them, Its Your Thing, Do What You Wanna Do. (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif)
(IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) Joe |
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| sean_v8_914 |
Mar 25 2005, 09:07 AM
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#7
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Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
stock cam, stock FI
aftermarket cam, go carbs other posts have valid points based on there experiences. I never go with what I know, allways taking the unknown path. Now I understand D-Jet and L-Jet |
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| Dave_Darling |
Mar 25 2005, 06:28 PM
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#8
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914 Idiot Group: Members Posts: 14,984 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
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The single-carb setups work well as paperweights... Not as any way to get air and fuel into a 914 engine.
--DD |
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| JoeSharp |
Mar 25 2005, 07:33 PM
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#9
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In Irvine, Ca. May 15-18 Group: Members Posts: 3,947 Joined: 9-July 03 From: DeLand, Florida Member No.: 898 Region Association: South East States |
Dave: VW did things for a reason. I would be happy to have you drive the Solex Twin singel carbed car at the Wild West Classic. You may change your mind about paper weights.
(IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) Joe |
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| Mueller |
Mar 25 2005, 07:36 PM
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#10
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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I'm pretty sure Dave was talking about using a single carb......you have 2 carbs mounted in the proper location. |
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| SirAndy |
Mar 25 2005, 07:44 PM
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#11
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Resident German Group: Admin Posts: 41,633 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
(IMG:http://www.914world.com/bbs2/html/emoticons/agree.gif) stock engine, go with the stock FI ... carbs will *NOT* improve performance unless you brake the case open and add a more agressive cam-shaft. the stock FI will run better, start better and produce more HP on a stock motor. plus, you don't have to re-jet your FI if you drive up to the mountains ... (IMG:http://www.914world.com/bbs2/html/emoticons/cool.gif) Andy |
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| Eddie914 |
Mar 25 2005, 07:48 PM
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#12
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Unregistered |
I Webers on my track car are great (40IDA3C on a 2.7)!
The fuel injection on my daily is great (Motronic on a BMW M5)! ... everything has it's time and place. If I could just get the 260hp of the daily driver into the 914/6 without breaking the bank (or the weight savings ... the M5 motor weighs about 550lb!) Eddie |
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| D-Jet |
Mar 25 2005, 07:53 PM
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#13
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Newbie Group: Members Posts: 37 Joined: 26-February 05 From: LA, CA Member No.: 3,668 |
This is an interesting thread. I have a similar question. How flexible is D-Jet. I know not very, but how bad. I'm looking to replace the intake, headers and exhust on my stock '75 2.0. Will I see any performance gains without messing with the D-Jet? Any idea how much?
--G |
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| SirAndy |
Mar 25 2005, 08:01 PM
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#14
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Resident German Group: Admin Posts: 41,633 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
you'll need to re-calibrate the MPS, which can be done ... in fact, i just gave Mueller the recalibrated MPS to go with my old 1.8L D-Jet ... (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) i know of several 2056cc 914s with headers/SSIs/sport mufflers and stock D-Jet. they run fine ... carbs or aftermarket FI are only needed if you go with a non-stock Cam ... oh, and another thing no one has mentioned so far, the stock FI will give you MUCH better gas mileage! (IMG:http://www.914world.com/bbs2/html/emoticons/cool.gif) Andy |
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| Mueller |
Mar 25 2005, 08:15 PM
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#15
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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be warned, it's not a Honda, or even a Ford Focus for that matter......doing all that is not going to get you as much HP as you think it will.... the best bang for the buck will be a nice header and street muffler like the European Racing setup
Do you know something we don't?? Where are you going to find this "magical" intake to be used with the D-Jet?? (IMG:http://www.914world.com/bbs2/html/emoticons/wacko.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) |
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| D-Jet |
Mar 25 2005, 08:28 PM
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#16
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Newbie Group: Members Posts: 37 Joined: 26-February 05 From: LA, CA Member No.: 3,668 |
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| JoeSharp |
Mar 25 2005, 09:09 PM
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#17
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In Irvine, Ca. May 15-18 Group: Members Posts: 3,947 Joined: 9-July 03 From: DeLand, Florida Member No.: 898 Region Association: South East States |
D-Jet: I have the engine you are asking about. 2056 with 9.0 CR, Ported, Web 107i cam, balanced and a lightened flywheel. I'm in the middle of adjusting the MPS. Unless you are an experinced engine builder I would Not recomend messing around with D-Jet or the MPS.
Someone on this board did a test on the D-Jet air box and engine bay temps. I think it was Demick. Not sure. I think the title was " 4HP for $4" Much cheaper and real results. (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) Joe Attached image(s) 
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| D-Jet |
Mar 25 2005, 09:16 PM
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#18
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Newbie Group: Members Posts: 37 Joined: 26-February 05 From: LA, CA Member No.: 3,668 |
Nice! That's exactly what I have in mind. I know where the engine is, does that count as experenced? I'm guessing not. What kind of hp/tq (approx) do you think you'll be getting? |
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| Bleyseng |
Mar 25 2005, 10:03 PM
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#19
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Aircooled Baby! Group: Members Posts: 13,034 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
I was getting 95rwhp or about 110-115 at the flywheel with a 2056cc motor. 42x38 valves,ported heads, bursch muffler and I tuned the Djet.
Makes for a quicker 914... Geoff |
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| JoeSharp |
Mar 25 2005, 11:54 PM
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#20
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In Irvine, Ca. May 15-18 Group: Members Posts: 3,947 Joined: 9-July 03 From: DeLand, Florida Member No.: 898 Region Association: South East States |
Geoff's is complete and its been on a dyno. I would only be hopeful to get that good of results.
(IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) Joe |
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