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> Type IV upgrades and FI, Where's the cut-off to carbs?
boxsterfan
post Jan 7 2014, 12:42 PM
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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)
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saigon71
post Jan 7 2014, 06:51 PM
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Preface: I have no experience with L-Jet fuel injection.

I'm not an expert on the subject, but I am completely impressed with the stock D-jet. Yes, it has it's bugs and takes some time to figure out...but it is pretty darn good for 40 year old technology. A big problem was the availability of good MPS's...but Tangerine Racing took that out of the equation with their rebuild kits. I took a 1380 mile road trip in my stock D-jet 2.0 last fall, after my engine sat in the shed for three years - it performed well. (IMG:style_emoticons/default/aktion035.gif)

I will be paying attention to price drops on aftermarket & more modern fuel injection systems, but until then, I am sticking with D-Jet and don't plan on building an engine that won't run well without it at this time.

My advice...stick with FI...unless you need a fire-breathing monster.



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boxsterfan
post Jan 7 2014, 07:11 PM
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QUOTE(saigon71 @ Jan 7 2014, 04:51 PM) *

Preface: I have no experience with L-Jet fuel injection.

I'm not an expert on the subject, but I am completely impressed with the stock D-jet. Yes, it has it's bugs and takes some time to figure out...but it is pretty darn good for 40 year old technology. A big problem was the availability of good MPS's...but Tangerine Racing took that out of the equation with their rebuild kits. I took a 1380 mile road trip in my stock D-jet 2.0 last fall, after my engine sat in the shed for three years - it performed well. (IMG:style_emoticons/default/aktion035.gif)

I will be paying attention to price drops on aftermarket & more modern fuel injection systems, but until then, I am sticking with D-Jet and don't plan on building an engine that won't run well without it at this time.

My advice...stick with FI...unless you need a fire-breathing monster.


It is certainly going to be a while before I tear down my 2.0L (fingers crossed) but my goal in this discussion was to see where the known limits are. Of course, I suppose this all depends on your goals for the motor. For me it would be:

Streetable motor
Longevity of the motor
Good power from lower RPM's all the way through
140-150 HP (or more (IMG:style_emoticons/default/smile.gif) )
Good gas mileage
????? Torque
901 Trans with better gearing
Upgraded brakes (BMW 320i brakes?)
D-Jet or L-Jet or Carbs?

I have recently gotten my arms around D-Jet operation as I got my 2.0L sorted out this last fall. It wasn't that hard really.
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Posts in this topic
boxsterfan   Type IV upgrades and FI   Jan 7 2014, 12:42 PM
Bleyseng   Rebuilding the engine to a 2056 with a Web73 or a ...   Jan 7 2014, 12:53 PM
ConeDodger   Rebuilding the engine to a 2056 with a Web73 or a...   Jan 7 2014, 02:08 PM
boxsterfan   Rebuilding the engine to a 2056 with a Web73 or ...   Jan 7 2014, 03:35 PM
Racer Chris   Rebuilding the engine to a 2056 with a Web73 or a...   Jan 7 2014, 02:57 PM
r_towle   keeping the stroke the same and adding cylinder si...   Jan 7 2014, 03:39 PM
saigon71   Preface: I have no experience with L-Jet fuel inje...   Jan 7 2014, 06:51 PM
boxsterfan   Preface: I have no experience with L-Jet fuel inj...   Jan 7 2014, 07:11 PM
914_teener   What is the consensus on CR for that set up? Fro...   Jan 7 2014, 07:20 PM
Porschef   For kicks... I've got a 2056 with a JR cam and...   Jan 7 2014, 07:52 PM
boxsterfan   For kicks... I've got a 2056 with a JR cam an...   Jan 7 2014, 08:12 PM
Racer Chris   For kicks... I've got a 2056 with a JR cam a...   Jan 7 2014, 08:41 PM
Porschef   Very adjustable, and easy once you learn the princ...   Jan 7 2014, 08:41 PM
Porschef   Yes, Chris, that's the baby! So sweet. Wh...   Jan 7 2014, 08:52 PM
Racer Chris   Yes, Chris, that's the baby! So sweet. W...   Jan 7 2014, 10:14 PM
saigon71   Don't mean to hijack the thread...but... Is L...   Jan 7 2014, 08:58 PM
r_towle   Either system can go as large as you want.... You...   Jan 7 2014, 11:13 PM
boxsterfan   Maybe the best question is who has done the 2270 L...   Jan 8 2014, 12:19 AM
396   Look at the bird site. They have a write up where ...   Jan 8 2014, 12:25 AM
boxsterfan   Look at the bird site. They have a write up where...   Jan 8 2014, 11:37 AM
ClayPerrine   If you want to run FI with a big cam, go find the ...   Jan 8 2014, 12:58 PM
396   If you want to run FI with a big cam, go find the...   Jan 8 2014, 01:38 PM
ClayPerrine   You have to find an early LH Jet system. The late...   Jan 8 2014, 01:42 PM
Krieger   I looked at using a system off a turbo volvo when ...   Jan 8 2014, 01:50 PM
boxsterfan   Gotta grab the ECU from the Volvo also right? or s...   Jan 8 2014, 01:52 PM
ClayPerrine   Gotta grab the ECU from the Volvo also right? or ...   Jan 8 2014, 02:32 PM
boxsterfan   Gotta grab the ECU from the Volvo also right? or...   Jan 8 2014, 03:39 PM
ChrisNPDrider   There's some great FI info to read about here ...   Jan 8 2014, 02:48 PM
ClayPerrine   There's some great FI info to read about here...   Jan 8 2014, 02:58 PM
rhodyguy   BMWs used Ljet as well. your 2.0 heads have 3 stud...   Jan 9 2014, 08:38 AM
ClayPerrine   BMWs used Ljet as well. your 2.0 heads have 3 stu...   Jan 9 2014, 08:57 AM
rhodyguy   after drilling 4 new holes, yes?   Jan 9 2014, 09:06 AM
ClayPerrine   after drilling 4 new holes, yes? No, I have pu...   Jan 9 2014, 09:08 AM
Racer Chris   after drilling 4 new holes, yes? 2 liter runners...   Jan 9 2014, 10:01 AM
ChrisNPDrider   There's some great FI info to read about her...   Jan 9 2014, 10:36 AM
ClayPerrine   [quote name='ClayPerrine' post='1980689' date='Ja...   Jan 9 2014, 10:43 AM
Marty Yeoman   The attached images show 2 liter heads, 912E runne...   Jan 9 2014, 02:03 PM
ClayPerrine   The attached images show 2 liter heads, 912E runn...   Jan 9 2014, 02:23 PM
polo classic   Anyone know if the chip in the stock 914 ecu is so...   Jan 9 2014, 02:54 PM
Valy   Anyone know if the chip in the stock 914 ecu is s...   Jan 9 2014, 03:12 PM
ClayPerrine   Anyone know if the chip in the stock 914 ecu is s...   Jan 9 2014, 05:09 PM
JamesM   https://www.youtube.com/watch?v=gINH-EDVKdM https...   Jul 5 2020, 02:53 PM
914_teener   Yep.....transistors...no integrated chip in there....   Jan 9 2014, 05:09 PM
seanpaulmc   Hello World - I hope you don't mind me bring...   Jul 5 2020, 09:50 AM
JamesM   Even D-jet on a totally stock car can be frustrati...   Jul 5 2020, 02:47 PM
Bleyseng   The 2056 with Djet is the best of both worlds as t...   Jul 5 2020, 11:29 AM
ClayPerrine   If you want a stock looking FI system, but have so...   Jul 5 2020, 03:15 PM
scottthephotog   Just some thoughts. I've recently been tuning ...   Jul 5 2020, 05:16 PM
seanpaulmc   Thanks for the replies. Let me add some input for...   Jul 6 2020, 05:46 PM
thelogo   If you wanna step up the performance Djet isnt...   Jul 6 2020, 05:56 PM
GregAmy   There is no life in between That's not necessa...   Jul 6 2020, 07:33 PM


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