Mix And Match Fuel Injection

[Guest Sbox]

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Edited May 24, 2008 by Sbox

[Taz_Rx]

You can use a fuel only or fuel and ignition computer. If you had fuel and ignition you want a electronic dizzy, either 4/5k one, or don't forget about 7ke parts, they have an even more modern dizzy that is ECU controlled!!

If you use a fuel only ECU, it just takes a pulse from the negative side of the coil (same signal tacho uses) to fire the injectors, so you can still use a points dizzy for this. However, if you are going to the effort of converting a K to EFI, it would still be a bit backward using the points dizzy , but the option is there. :jamie:

 

5K is 1500cc. :o

 

Injectors:

the 4ke uses pissy 145cc, 2.4 ohm (light green) injectors. They have a total power potential of 29hp each, ie 116hp (flywheel) or 85kw. this wouldn't be too bad on an NA STOCK motor, but if you are going to force induct it, or any head work or cams etc you're gunna start pushing the injectors.

 

Which type of 4age injectors do you have? theres 6 types!

Nippon Denso, 182cc, dark grey 2.0 ohm, 36.4hp each

Nippon Denso, 200cc, pink, 2.7 ohm, 40.0hp each

Nippon Denso, 210cc, blue, 2.4 ohm, 42.0hp each

Nippon Denso, 213cc, beige, 13.8 ohm, 42.6hp each

Nippon Denso, 250cc, green, 13.8 ohm, 50.0hp each

Nippon Denso, 250cc, violet, 13.8 ohm, 50.0hp each

 

Doesn't matter too much which ones you have, but if they are some of the higher impedance (13.8 ohm) ones, they will be easy to wire and configur.

 

4age throttle body will work, but its not going to be huge upgrade on the 4ke as it will still have a restriction were it goes into the actual plenum. To make the very most of a bigger thottke body you really need to make a custom plenum and runners to were it bolts onto the lower half of the 4ke mani (bit that holds injectors).

 

As far as ECU, forget using the stock 4age one, although it could be done it deffinately would not be worth the hassle and I'd deare say it would be the more expensive and wouldn't run as well!!

Best bet would be to get something like the Digi 2 Pro I had for sale earlier in the week. I got it for $200 off ebay and will do everything you need...under 20psi of boost that is. There is also a Digi 2 + which is fuel and ignition, still go for about the same price, maybe a little more.

 

Think that about covers it....Jeez your luck I'm bored right now!! :lolcry:

[Guest Sbox]

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Edited May 24, 2008 by Sbox

[Xany]

Personally for a 5k, i would ditch the 4KE setup cause they are just too small......get a 7Ke manifold if you can find one, they are a much better design for flow (shorter runners too).....and if you get the 7ke manifold you don't have to worry about it clearing the tappet cover like the 4ke one. :jamie:

[Guest Sbox]

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Edited May 24, 2008 by Sbox

[chrisandliz[RL]]

Personally for a 5k, i would ditch the 4KE setup cause they are just too small......get a 7Ke manifold if you can find one, they are a much better design for flow (shorter runners too).....and if you get the 7ke manifold you don't have to worry about it clearing the tappet cover like the 4ke one. :jamie:

 

 

how do you mean "TOO SMALL". I don't get it.

 

do you mean the porting is to small.

 

or over all size.

 

or the injectors.

 

The 5k head ports are 25.34mm

[Guest Sbox]

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Edited May 24, 2008 by Sbox

[Xany]

They are pretty restrictive......7KE has bigger ports again if you had any head work done....they also flow alot more air for a forced induction setup.

[Guest Sbox]

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Edited May 24, 2008 by Sbox

[madrolla68]

Err..... forced induction and flow?

 

Ever wondered why aftermarket plenums are bigger, cause they hold more air.

 

The 4KE stuff has long runners and a small T/B which is restrictive to flow be it forced or N/A.

[Xany]

^^^^^^^ thank you....finally someone with some common sense.

[Guest Sbox]

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Edited May 24, 2008 by Sbox