EFI, whats involved what to expect , where to go

[djinuk]

Ok, just wondering for a little of my own research really.

Whats involved with efi, what gets removed , what gets added, where do you go for it , what do you expect yada yada.



My understanding is the carb and dizzy gear goes in the bin, and in turn you have a trigger wheel and a sensor, a fuel fail and injectors /throttle body, an ecu (generally somthign programable).. and a coil pack.

Just wondering , its somthing i may be interested in going for in the future.

[TrixNFlix]

Ok, just wondering for a little of my own research really.

Whats involved with efi, what gets removed , what gets added, where do you go for it , what do you expect yada yada.



My understanding is the carb and dizzy gear goes in the bin, and in turn you have a trigger wheel and a sensor, a fuel fail and injectors /throttle body, an ecu (generally somthign programable).. and a coil pack.

Just wondering , its somthing i may be interested in going for in the future.


I'm sure I'll get shot down again but I just can't understand converting the c1j to efi when there are other cheaper engine conversions. :confused:

[Shane P]

I am going for this very soon as well. I quite like the idea of modernising whats already there to improve the reliability and fuel consumption. This way i get to keep my engine, stay in the same tax band and all the running gear remains standard making it very cheap and straightforward to service by anybody :-)

[Woznaldo]

Have a little read of this thread first:

http://www.rtoc.org/boards/showthread.php?t=14237

Many EFI systems can now read the Renault 44-2-2 flywheel tooth pattern so no need for a separate trigger wheel. There's lots of different routes to take but it will depend on how much work you want to do yourself or how much you want to spend (or don't want to spend).

RTOC members already running EFI use various different ECUs like Adaptronic, Emerald and different versions of Megasquirt (DIY build). Some even use a Renix from another Renault that's been reflashed.

You can run single point throttle body injection or the more popular multipoint. Your can have a custom manifold made or covert one from a different car.

The basic list of parts is below:

ECU
Manifold (including plenum, throttle body and injector mounts)
Fuel Rail
Injectors
Fuel Pressure Regulator
Ignition Coil Pack or COP
Ignition Leads
Trigger wheel and sensor (if your chosen ECU can't read)
IAT (Inlet Air Temp) Sensor
Coolant Temp (CLT) Sensor
MAP (Manifold Absolute Pressure) Sensor (3 bar+)
Electrical Loom
Various Vacuum Pipes

I'm sure someone will add to the list but I think that's the basics covered. The costs for the above will vary depending on what kit you get and whether you go new or used.

If you're not tuning yourself you'll also have to add in some mapping time into your costs.

Lots of stuff to think about but the Megasquirt sites are a good reference point for research.

Hope that helps. ;)

[Danboi2]

Im doing this aswell, am doing it in stages

I had a scoff trigger wheel and sensor fitted when fishead rebuilt my engine
next to be done will be the two sensors and an adjustable fuel reg
then a custom ecu loom made ready

my michael tierney efi manifold and fuel rail is in the post ;)along with some saab red top injectors thanks to ebay
will just need my emerald k6 ecu installing and a coil pack,leads and a map sensor to be got

then get it all fitted and off to be mapped

[SCHWARTZ]

I'm sure I'll get shot down again but I just can't understand converting the c1j to efi when there are other cheaper engine conversions. :confused:

:agree:

[djinuk]

I think for me i enjoy the small compact size of the c1j, and feel comfortable in the wealth of info around for these motors. I enjoy the fact the parts are cheap, and most of it can be ascessed without removing tons of other stuff. Also the fact its a 1.4 8v engine, I think as soon as people say whats it running and you tell them 1.7 , 2.0 16v etc i duno it has to be fast otherwise its not worth it.

Personally i love the carbs aswell , but still i wouldnt chuck reliabilty and extra power out the window, and i think if it was a little more tried and tested id certainly be interested.

[TNT ANDY]

I think for me i enjoy the small compact size of the c1j, and feel comfortable in the wealth of info around for these motors. I enjoy the fact the parts are cheap, and most of it can be ascessed without removing tons of other stuff. Also the fact its a 1.4 8v engine, I think as soon as people say whats it running and you tell them 1.7 , 2.0 16v etc i duno it has to be fast otherwise its not worth it.

Personally i love the carbs aswell , but still i wouldnt chuck reliabilty and extra power out the window, and i think if it was a little more tried and tested id certainly be interested.

Mines up and running, but needs mapping, booked in with Scoff early next year - I'll keep you posted.

[Tony Walker]

I'm sure I'll get shot down again but I just can't understand converting the c1j to efi when there are other cheaper engine conversions. :confused:


Because its still a renault 5 with a modified engine, change the engine and its just not quite a 5 anymore. Each to there own tho :D

[Robbo]

:agree:
:agree:

[TNT ANDY]

Because its still a renault 5 with a modified engine, change the engine and its just not quite a 5 anymore. Each to there own tho :D

:agree::agree::agree::agree:

Totally with you there, I just love the sound of the C1J, no cambelt, cheap tax, good fuel economy still heaps of power in a fwd car. I would never consider an engine transplant unless it was another C1J.

A well tuned C1J will be as reliable as any well tuned engine, that's why I never went down the route of a more modern hence reliable engine despite the attraction of 16v and a cross flow head (might be wrong there) that in technology circles is way ahead of the game when compared to the C1J.

I love the feel of the C1J, the sound the smell, the punch the fact that it is simply 1.4, single cam, pushrod, tappety, noisey, chain driven, raw engine. I love it, I frickin do.

[Tony Walker]

:agree::agree::agree::agree:



I love the feel of the C1J, the sound the smell, the punch the fact that it is simply 1.4, single cam, pushrod, tappety, noisey, chain driven, raw engine. I love it, I frickin do.


:agree: I agree, i dont deny that theres engines above and beyond the c1j by a very long way. but i love the rediculous delivery of the c1j, i drive modern cars all day every day seemless effortless boring :disagree:

Sorry to hijack ill stop now :D

[TrixNFlix]

Because its still a renault 5 with a modified engine, change the engine and its just not quite a 5 anymore. Each to there own tho :D

Fair doos, each to their own but I still think changing the c1j to efi is fundamentally changing the whole aspect of the c1j, and consequently a r5gtt anyways! :cooter::D

[Scoff]

Its a funny old subject really, you just have to do whatever takes your fancy, there is no right or wrong when it comes to what's "right" for the car !

There is certainly no disputing that there are some gains to be had in terms of reliability, fuel ecconomy, mid range and spool. It's a bit iffy if you're likely to make better power though. Only in cases where folk arn't scared of running some real boost do I see gains. At say 20psi you'd be hard pressed to make any better HP with EFI than you would with a well setup carb.

It's not really a matter of it being tried and tested though - thousands of people each year swap carbs for EFI on all type of engine and see gains - its not even up for debate! But yes, it's arguable that some of the cars charachter might die along with a conversion. Some people are bothered by that to more or less extents. Do whatever makes you happy :cool:

[Logg]

:agree::agree::agree::agree:

Totally with you there, I just love the sound of the C1J, no cambelt, cheap tax, good fuel economy still heaps of power in a fwd car. I would never consider an engine transplant unless it was another C1J.

A well tuned C1J will be as reliable as any well tuned engine, that's why I never went down the route of a more modern hence reliable engine despite the attraction of 16v and a cross flow head (might be wrong there) that in technology circles is way ahead of the game when compared to the C1J.

I love the feel of the C1J, the sound the smell, the punch the fact that it is simply 1.4, single cam, pushrod, tappety, noisey, chain driven, raw engine. I love it, I frickin do.

I'd second that well put my mad friend.

Practical performance car have been doing carb to efi guide over the last few months. Proper cheap. Welding tubes onto a carb base to make a throttle body. lol