7K Efi Or Carborater Which Is Best..

[Fawad85]

i am buying 7k engine i found 7k carboreter engine in my area for ke70 is this engine is best or buy efi i sold

my 4k engine for too much cng gas eater that why i sold it and buying 7k which is best 7k efi or carboreter.

[ae824ate]

Fixed.

Edited December 1, 2010 by ae824ate

[Fawad85]

i mean which is best 7k efi or 7k carboreter for gas system i am from pakistan here is too expensive petrol in

pakistan.

[Taz_Rx]

That made no fu**ing sense at all. It doesn't take alot of time to type a sentence properly. How long is a piece of string? Can you wire the 7k efi yourself? Can you wire the fuel pump, run fuel lines, ECU yourself? Also depends what you want to use it for man. EFI is great, but carbureted setup is ALOT simpler.

 

i mean which is best 7k efi or 7k carboreter for gas system i am from pakistan here is too expensive petrol in

pakistan.

 

Settle down ae824ate, even Steve Wonder could have seen English is obviously not his first language.

 

 

To answer your question - The 7KE will always be the more efficient motor as it has EFI, simple as that. However, they're internally the same engine so they both have the potential to use just as much fuel if driven hard. The 7ke could possible even use more than a 7kc as they actually have bigger ports. Food for thought.

[ae824ate]

Settle down ae824ate, even Steve Wonder could have seen English is obviously not his first language.

 

Didnt mean to offend, but it kinda resembled a lazy teenager's typing. I can understand the question now, but you got it covered, and i don't have alot of experience with gas. Will you be doing the work yourself? First post removed :wink:

[Fawad85]

i am mobile software enginear work my car will fit it with my friend..

[ke70dave]

ahh well if you are a software engineer you must be inteligent.

 

forget carbys.

 

buy a programable ecu, a cheap one, ie a megasquirt.

 

then wire it in and start road tuning.

 

though ive never dealt with Gas, so not sure on what is required.

 

i dare say that a decently tuned EFI system will always be more fuel efficient than a carby setup.

 

I'm not sure how good the standard ECU is though, which is why i suggest the aftermarket jobby.

[Sloth]

I have a 7K in my KE55 with twin SU carbys. When we first got the engine it a single (3k?) carby on it. The previous owner sold the EFI parts and converted it to run use the carby as he didn't know anything about EFI engine and thought it would be easier. Unfortunately the carby didn't run very well, and even when we put the dual carbys on it still didn't run great. After putting it on the dyno and having a mechanic try out different needles they found the right ones and tuned it up good. I wouldn't say it's very fuel efficient, but it's not too bad. It makes 58KW at the wheels.

 

From what I've heard though, EFI for the 7ks is usually the best option. The main reason people chuck carbys on them is just because carbys are simpler. I've always wondered what the difference in power would be between a carby and EFI 7k.

[crunk81us]

if you are running straight gas, not dual fuel, then you shouldn't require the efi at all..

[altezzaclub]

Injection will be more efficient, the same as it is with petrol. But it will also be more complicated and expensive to setup, also the same as petrol.

 

If I were you I'd use a carb with the converter/mixer, which will have to be the right size for your motor to make it efficient. rob83KE70 had it on his Dyna, but it used a lot of LPG as the converter was too small and it didn't evaporate completely.

[Fawad85]

if you are running straight gas, not dual fuel, then you shouldn't require the efi at all..

 

 

in my country gas is cheap and petrol is expensive so my rollaclub friends what can i buy carby or efi

i used gas to much and petrol use someday when gas not avilable.

[SLO-030]

Carburettor with a mixer and converter as mentioned above, for ease of everything.

[beerhead]

EFI LPG is too expensive you're going gas and can run a carby instead, keep it simple I think. I'd recommenced a Gas Research LPG throttle body, can be had as a side draft or down draft setup. If you get an EFI motor you can bolt the throttle body where the factory EFI throttle body used to be, and convert it to 4k/5K electric or points ignition, if you get a carby motor, you can get the down draft model and your sorted. Gas hats work, but don't work as well as the gas research gear.