Modern Injectors... Will they fit?

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ElGrande
Posts: 45
Joined: Tue Nov 24, 2015 7:28 am
Your car is a: Fiat 124 Spider 2000 Cs0

Modern Injectors... Will they fit?

Postby ElGrande » Mon Jun 20, 2016 4:17 pm

Ciao Spideristis, :mrgreen:

currently i'm upgrading my Spider Cs0 with a Fiat Abarth Head, a lot of Tuning from the GuyCroftBible and other Stuff... and there will be an ECU similar to Megasquirt2 with all extras 8)

Now i'am looking for new Injectors with around 200cc/min and the right angle etc.

Does anybody know a type which will fit the Fiat Manifold? Are modern Injectors much better than the old L-Jetronics?
I think the biggest problem will be how to fit them because they are not in a line... ?!??

Greetings from Munich

ElGrande

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divace73
Posts: 1380
Joined: Sun Oct 17, 2010 5:59 am
Your car is a: 1980 Fiat 124 Spider Silver
Location: Sydney, Australia

Re: Modern Injectors... Will they fit?

Postby divace73 » Mon Jun 20, 2016 8:14 pm

you can get the same style of injector with higher flow (I think 200cc/min may be a bit low for higher horsepower). The newer injectors are usually hi impedance (z), your megasquirt can handle both, the L-Jet can also handle hi Z, I have been running hi Z 220cc/min for years without any issues. The only issue is that some ECU's can only handle hi Z then you CANNOT use low impedance injectors alone (you need to use a pull up resistor). if you use this calculator it will give you an idea on what flow rate you need for the amount of horsepower you are designing http://fuelinjectorclinic.com/hp-calculator duty cycle should be 80% for normal conditions, (you don't want to drive your injectors too hard) (the calculator recommend 90% I personally think this is a little high, I think it is better have a bigger buffer just in case you have to push them harder??)

as a guide this ebay link http://www.ebay.com.au/itm/VL-TURBO-INJECTORS-X6-RB30ET-Genuine-intermotor-USA-/120744350894?hash=item1c1cec94ae:m:mq3U7iXco5EzltTycNSMqdA (no relation to it) has 250cc/mm and are used in a 6cyll turbo motor from the late 80's, the changes may be the hose length and sometimes the o-rings are different sizes.

If you want to use modern injector then you will have to fabricate a fuel rail and regulator to suit (and maybe change the connectors), the challenge with our cars (from memory) is that the all 4 injector don't come out parallel with the standard FI system, making it difficult to adapt a straight fuel rail.

If you are using throttle bodies different story altogether
Cheers David
-=1980 silver Fiat 124 Spider=-
If you want to see pics of my car (and other random stuff) >>click here<< OR
see my >>You tube channel<<

ElGrande
Posts: 45
Joined: Tue Nov 24, 2015 7:28 am
Your car is a: Fiat 124 Spider 2000 Cs0

Re: Modern Injectors... Will they fit?

Postby ElGrande » Tue Jun 21, 2016 4:30 am

Hi David,

thank you for your interesting calculating-link... i've tried several ones and all of them told me that 200cc will be enough for 150hp....

But now, with 80% duty cycle and other calculators it goes up to 222ccm or 250ccm/min ;)

I hope to build an adapter to fit new injectors on the stock fiat rail.... or find good old-type injectors... but they are rare and sometimes really expensive...

Cheers

ElGrande
Posts: 45
Joined: Tue Nov 24, 2015 7:28 am
Your car is a: Fiat 124 Spider 2000 Cs0

Re: Modern Injectors... Will they fit?

Postby ElGrande » Fri Jun 24, 2016 6:11 am

Hello there,

does anybody knows a type of injectors with around 230 two 250ccm/min for the original Fiat Intake?

Regards

Norbert

User avatar
divace73
Posts: 1380
Joined: Sun Oct 17, 2010 5:59 am
Your car is a: 1980 Fiat 124 Spider Silver
Location: Sydney, Australia

Re: Modern Injectors... Will they fit?

Postby divace73 » Mon Jun 27, 2016 11:22 pm

http://www.fuelinjector.citymaker.com/Fuel_Injector_Flow_Rates.html

Have a look at this page, some older BMW may have them, I had mine made my a mob here in Oz a while ago.

You would ll want the barb on the end if you are going to use the same fuel rail
Cheers David
-=1980 silver Fiat 124 Spider=-
If you want to see pics of my car (and other random stuff) >>click here<< OR
see my >>You tube channel<<

Hjulenx
Posts: 33
Joined: Wed Jun 11, 2008 7:10 pm
Your car is a: 81 Fiat Spider

Re: Modern Injectors... Will they fit?

Postby Hjulenx » Fri Jul 01, 2016 12:21 am

Take a look at the list here:http://www.witchhunter.com/injectordata1.php

Select hose end injectors and there are a lot of options. I used 0280 150 206 with my mega squirt system and they fit perfect in the stock intake with the fuel rail. 35$ at autozone each.
James
'81 Fiat Spider

ElGrande
Posts: 45
Joined: Tue Nov 24, 2015 7:28 am
Your car is a: Fiat 124 Spider 2000 Cs0

Re: Modern Injectors... Will they fit?

Postby ElGrande » Sat Jul 02, 2016 8:53 am

Great :D

Thank you very much :mrgreen:

ElGrande
Posts: 45
Joined: Tue Nov 24, 2015 7:28 am
Your car is a: Fiat 124 Spider 2000 Cs0

Re: Modern Injectors... Will they fit?

Postby ElGrande » Tue Sep 05, 2017 8:20 am

Hello,

FYI:
I found these 4-Point injectors Bosch 0280150913 they are good for engines up to around150HP.

Best regards

ElGrande


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