 MFI or carbs? |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| bossboy302 |
 Mar 3 2023, 02:07 PM
Post
#1
|
|
Member  Group: Members Posts: 88 Joined: 13-December 21 From: NorCal Member No.: 26,158 Region Association: None  |
Sorry for re-asking this, but as I begin fiddling with mechanical and electrical components for my project 6 conversion, I am still pondering this decision.
The car, when finished, will be shipped to Europe where my wife and I can use it when we're there, and do some rallies, trips and such. There will likely be (months-long) periods of no use. Have most of the necessary stuff for the build, (included with the '71E motor-entire MFI, fuel filter/console, complete electrical board, fuel pump, etc) all from 'donor' car... But I'm beginning to sense that the complexity of MFI (transducers, fuel system, micro-switches, etc.) could prove challenging. A good set of PMO's on the other hand: basic fuel pump and regulator, MSD 6AL, and a spray can of ether may be better suited, again given the intended use. So, I welcome thoughts and opinions-thanks |
   |
 
|
  |
Replies
| peteinjp |
Mar 8 2023, 03:47 AM
Post
#2
|
|
Member Group: Members Posts: 211 Joined: 15-July 21 From: Japan Member No.: 25,723 Region Association: None 
|
QUOTE(roundtwo @ Mar 8 2023, 04:21 PM)  @ClayPerrine What about altitude? Many major mountain passes and routes at fairly high elevations that you don't want to miss. Cold start at 8-9k feet (IMG:style_emoticons/default/barf.gif) Always nerve racking to drive when carbs aren't running their best. If fuel cost a factor, FI more efficient too. MFI has altitude adjustment... Just sayin. Pete |
|
|
|
| ClayPerrine |
Mar 8 2023, 06:30 AM
Post
#3
|
|
Life's been good to me so far..... Group: Admin Posts: 16,491 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
|
QUOTE(peteinjp @ Mar 8 2023, 03:47 AM) MFI has altitude adjustment... Just sayin. Pete Yea, MFI has altitude adjustment... and a FANTASTIC sound. But it runs quite rich most of the time, and you get terrible gas mileage. You are lucky to get 16 MPG out of it. And a cold start with MFI is a bitch. If you use the built in cold start system, you risk a fire in the stacks if the engine backfires, and that happens a lot when cold. And it will be 20 minutes of warmup before you can go anywhere. Early in the morning, it will be rather annoying to anyone else trying to sleep in hearing your car warmup. Honestly, I LOVE MFI! It runs great at full throttle and sounds fantastic. I would put it on a race motor in a heartbeat. But from experience, I would rather live with EFI for a daily driver, and that is what we are talking about here. |
|
|
|
Posts in this topic
bossboy302 MFI or carbs? Mar 3 2023, 02:07 PM
Superhawk996 MFI is amazing tech for that era. However, hard t... Mar 3 2023, 02:22 PM Long_ago Agreed.
I went with new webers on my 6. For the si... Mar 3 2023, 02:32 PM Cairo94507 I 100% agree; you can always swap out to MFI when ... Mar 3 2023, 02:34 PM r_towle Add in a fuel shutoff (look at the 356) so when yo... Mar 3 2023, 02:44 PM ClayPerrine You should consider an aftermarket EFI setup.
Mo... Mar 3 2023, 02:50 PM NARP74 I am guessing the newer EFI systems will cost ... Mar 3 2023, 02:55 PM mlindner bossboy302. Living in Wisconsin, time on the road ... Mar 4 2023, 08:03 AM targa72e Mfi once set up requires very little attention. If... Mar 5 2023, 11:22 PM
ClayPerrine
On of the other issues with MFI is that 914 has... Mar 6 2023, 06:35 AM vitamin914 On my carbed '74 914-4 I have a switch to the ... Mar 6 2023, 08:22 AM Eric_Shea Modern EFI that looks like carbs. ;)
https://pmbp... Mar 6 2023, 01:08 PM Superhawk996 EFI is nice and all but that wasn’t what OP aske... Mar 6 2023, 01:37 PM Eric_Shea OK, OK... Carbs to the OP?
ECU is Holley. Holley... Mar 6 2023, 02:01 PM ClayPerrine
OK, OK... Carbs to the OP?
ECU is Holley. Holle... Mar 6 2023, 02:27 PM Superhawk996
OK, OK... Carbs to the OP?
ECU is Holley. Holle... Mar 6 2023, 04:13 PM r_towle Honestly, it does bring up an interesting reality.... Mar 6 2023, 05:13 PM 930cabman My vote goes to Webers. Mar 6 2023, 05:20 PM r_towle
My vote goes to Webers.
I’m in the same camp t... Mar 6 2023, 05:24 PM ClayPerrine
I’m in the same camp today,,, until I learn mor... Mar 7 2023, 06:41 AM Superhawk996
Dead stock carbs. Well maintained. Driven reg... Mar 7 2023, 07:46 AM JmuRiz I’m lucky enough to have EFI, MFI and carb exper... Mar 6 2023, 07:55 PM bossboy302 O P here-first, thank you all for contributing gre... Mar 7 2023, 10:09 AM peteinjp I’m in the other camp. If you have all the Mfi s... Mar 6 2023, 08:48 PM NARP74 For the Jenvey carbs, is that price per, or for a ... Mar 7 2023, 09:11 AM ClayPerrine
For the Jenvey carbs, is that price per, or for a... Mar 7 2023, 09:58 AM Eric_Shea
[quote name='NARP74' post='3063118' date='Mar 7 2... Mar 8 2023, 01:03 PM horizontally-opposed
Also the Jenvey will fit common IDF/IDA air clean... Mar 8 2023, 06:25 PM ClayPerrine There is a lot to be said for the simplicity of ca... Mar 7 2023, 09:54 AM Superhawk996
Another advantage to EFI is that professional he... Mar 7 2023, 10:14 AM ClayPerrine
Another advantage to EFI is that professional h... Mar 7 2023, 10:27 AM Superhawk996
[quote name='Superhawk996' post='3063130' date='M... Mar 7 2023, 10:47 AM r_towle
[quote name='Superhawk996' post='3063130' date='... Mar 7 2023, 11:09 AM ClayPerrine
I will say, I learned on new term here.
Percussiv... Mar 7 2023, 12:08 PM dr914@autoatlanta.com if the mfi is matched (T E and S are all different... Mar 7 2023, 12:38 PM ClayPerrine Another thing to consider is the location where th... Mar 7 2023, 03:38 PM bossboy302 Great point!
So with permission, I'll star... Mar 7 2023, 04:23 PM r_towle Somewhere here is an old thread of a couple who sh... Mar 7 2023, 06:49 PM Superhawk996 Register stateside and get an EU Carnet to bring i... Mar 7 2023, 07:52 PM roundtwo @ClayPerrine
@bossboy320
Good point about emissio... Mar 8 2023, 01:21 AM 930cabman
[b]@[url=http://www.914world.com/bbs2/index.php?s... Mar 8 2023, 06:02 AM JmuRiz :idea: Mar 8 2023, 04:51 PM Eric_Shea Not yet Pete. Bob's was the early Sport air f... Mar 8 2023, 07:09 PM horizontally-opposed
Not yet Pete. Bob's was the early Sport air ... Mar 9 2023, 03:49 PM Superhawk996 :hijacked:
OP asks A or B
Answer - you need ... Mar 8 2023, 07:14 PM Steve
:hijacked: :evilgrin:
:deadhorse:
Tons of in... Mar 8 2023, 07:17 PM Eric_Shea Ooooooooooooooops! Thread police! :lol:
... Mar 8 2023, 07:33 PM Superhawk996 Thread police here :cop: It’s all in good fun... Mar 9 2023, 04:18 PM tygaboy In case anyone cares: my main gripe with Holley EC... Mar 9 2023, 04:35 PM Superhawk996
In case anyone cares: my main gripe with Holley E... Mar 9 2023, 06:57 PM tygaboy
In case anyone cares: my main gripe with Holley ... Mar 9 2023, 07:14 PM Eric_Shea
True dat. This is one of the reasons our builds... Mar 13 2023, 01:47 PM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 1st August 2025 - 06:44 PM |
Invision Power Board
v9.1.4 © 2025 IPS, Inc.