Type IV upgrades and FI, Where's the cut-off to carbs? |
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Type IV upgrades and FI, Where's the cut-off to carbs? |
boxsterfan |
Jan 7 2014, 12:42 PM
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#1
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914's are kewl Group: Members Posts: 1,776 Joined: 6-June 03 From: San Ramon, CA Member No.: 791 Region Association: Northern California |
At some point, my motor (1974 2.0L) will need a rebuild. I'm not going to go the /6 conversion on this car. If I rebuild the motor to a 2056 or 2270 displacement, can I still use the FI system (D-jet)? Or is there some spot in here where it is better to switch to carbs? Or if I wanted to have FI then switching to L-Jet instead?
Happy to do some reading if you have it... (IMG:style_emoticons/default/chowtime.gif) |
seanpaulmc |
Jul 5 2020, 09:50 AM
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#2
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Member Group: Members Posts: 303 Joined: 6-December 16 From: Orlando, FL Member No.: 20,649 Region Association: South East States |
Hello World -
I hope you don't mind me bringing up an old tread. I'm interested in the conventional wisdom of how far the D-jet can stretch to larger T4 builds. I saw these youtube videos and it got me wondering if D-jet would work up to larger displacement T4 engines say up to 2270. These videos say 2.4L but I wanted to know what the experience here is. Porsche 914, 2.4 with Bosch D-jetronic - It lives! Porsche 914 2.4 with D-jetronic The other relevant 914World thread I found was... What is the largest displacement engine - FI It seems the 2056 with D-jet is very typical. Can the D-jet be made to work with the 2270? What modifications would be needed? Know that I am a ways off from getting this sorted. Just dropped the engine yesterday - thanks Ian - and have some serious body repairs to make before getting to the motor. I certainly don't want a built motor sitting around with nothing to put it in. As I stated at the onset, would like to hear the current consensus about the D-jet on the bigger 4's as I have some time to ponder FI vs Carbs as I work to put this body back together. Since we all love pictures... Thanks in advance. Sean |
JamesM |
Jul 5 2020, 02:47 PM
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#3
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Senior Member Group: Members Posts: 1,915 Joined: 6-April 06 From: Kearns, UT Member No.: 5,834 Region Association: Intermountain Region |
Even D-jet on a totally stock car can be frustrating these days with the age of the system and the lack of parts. I used to be a d-jet purest but dealing with that system has become much, much more difficult and more expensive over the years.
If "upgrade" is your ultimate goal I would forget about d-jet, at least all the electronic pieces of it (the actual intake, throttle body, etc work great with a Megasquirt setup) even if you get d-jet working "well" you are still going to be limited in what you can do with it engine wise. Ditch the d-jet and go modern injection and a 2056 properly built to take advantage of it is looking more like 140hp + much nicer manners. |
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