DJAngelicon

Ok, I know peoples had ask this before and must be one of those common questions. I was searching around the forum for answers but just got some information which was nice but, however; I didn't find a direct asnwer so I am going to ask. Unless I miss it somewere in my search I guess I will need better glasses.

Ok, so I was wondering for a 1981 RX7 that have a Carb would it be best if I convert it to fuel injection?

Would it be best than Carb in performance and maintenance?

How much would it cost for a nice Fuel Injection and maybe round up how much would the labor for something like that cost?

kettlman

iTrader: (2)

i tell you what. i'm a holley guy, love carbs alot. but i wanna go efi just cause its much better in my oppinion. i've got an 80. just cost wise. you will need a new intake manifold, fuel pump, fuel line, throttle body, injectors (if they don't come with the throttle body), change your linkage, and most of all a computor system to manage it.

so, i would say the price range is just a LOT out of my range. so there's your answer.

shm21284

efi is better but will cost around 3000 for a proper, excellent setup.

DJAngelicon

Wow I guess I will wait until I have more money and a job. LOL!

REVHED

EFI will **** on any archaic old carb setup. It can be done a lot cheaper than $3000US too. This is the price list from www.injectionperfection.com in Aussie $. Many of these parts can be bought cheaper second hand and you can use a fuel only MT-4 which can be had for under $500. You can probably do it for around $2000US if you install it yourself.

01 IDA Throttle Body 50mm -$590.00

01 Malpassi Fuel Pressure Regulator -$160.00

04 Bosch 600cc Injectors -$420.00

01 Bosch Fuel Pump -$295.00

01 Fuel Rail -$100.00

01 TPS -$100.00

01 Cable Clamp -$33.00

01 Fuel Filter -$29.00

01 Pre Filter -$30.00

01 Microtech MT-8 Fuel & Ignition ECU -$1,095.00

01 Microtech Hand Controller -$200.00

TOTAL -$3,052.00

BigJim

Yes, search for fuel injection carb and user Big Jim. I made a post with quite a few responces that was very informative and pointed out that FI is better if you have alot of money to spend, but for alot less money u can get close to what FI would get you. ill try and dig up the link

680RWHP12A

fuel injection wont give you much of a performance gain over a good carb setup unless your building an all out race car and need every bit of x-tra power you can get...

but... on a old 12a you wont see much of a difference between the two in the performance area, you will however be missin a few thousand from your bank account!!!!

DJAngelicon

LOL!, so what would you recommed then 680RWHP12A?
Stick with the Carb and just hook it up?

comradegiant

I'd go with side-drafts. Something from Mikuni. EFI is great, but expensive and has lots of troublesome computers.

680RWHP12A

yah, im with you on this one... a good sidedraft weber carb kit will really boost your power and it looks way better than the stock carb too!!

also you wont have to spend hours porting the stock intake manifold either!!
you get a nice new hi-performance one!!

DJAngelicon

Were would be a good site to order something like that?

kettlman

iTrader: (2)

www.racingbeat.com

DJAngelicon

Cool beans so the 48 one is the right one I should get huh?

http://www.racingbeat.com/FRmazda1.htm

kettlman

iTrader: (2)

yeah, if your stock engine i would go with the 48's. then with that intake you could go with fuel injection when you got the money. if you really wanna do that. but those webers are great for cornering.

Sk8r_dude

go carb...i learned the hard way...******* efi....

tjgosurf

Is this sarcasm?

DJAngelicon

LOL! na, just really wondering what it would be best. LOL! cause some peoples say Fuel Injection is the way to go, and others say Carbs is better so I just want to make sure I make up my mind.

tjgosurf

Go with a carb, computers are too confusing. What if the whole world gets hit with EMP? will your electronic fuel injection work then? HA!

OnlyOnThurs

With that webber 48 ....... is there anything else you have to change or watch out for once you install it......?