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injectors

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jeeppoor
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injectors

Post by jeeppoor » February 26th, 2020, 10:07 am

I picked up a stroker cheep. 258 crank and rods. not sure about cam.
I have a 1998 horse intake and stock exhaust manifold on it. 2" single exhaust pipe (no room to run duals or a bigger pipe).
63mm throttle body.
Will I need to pick up a new set of (bigger) injectors?
Or will I be ok.
I don't want to run it lean.

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Cheromaniac
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Stroker Displacement: 4563cc
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Re: injectors

Post by Cheromaniac » February 26th, 2020, 10:50 pm

What model and year is your Jeep?
1992 XJ 4.6 Stroker - 5MT - Sold :cry: Stroker build-up, Stroker "recipes"
2006 Mustang GT - 5MT - Midlife crisis car :D with Mods

jeeppoor
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Stroker Displacement: 4.6
Vehicle Year: 1976
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Vehicle Model: Home made
Location: Michigan

Re: injectors

Post by jeeppoor » February 27th, 2020, 10:40 am

LMAO
It is a Frankenstein
But we are running a 98 computer
And blue ring stock injectors.

Cummins90
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I made it to triple digits!
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Re: injectors

Post by Cummins90 » February 27th, 2020, 10:51 am

Run the motor and check your fuel trims to see how much extra fuel is being applied.

jeeppoor
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Posts: 14
Joined: September 16th, 2019, 6:14 am
Stroker Displacement: 4.6
Vehicle Year: 1976
Vehicle Make: Juggy
Vehicle Model: Home made
Location: Michigan

Re: injectors

Post by jeeppoor » February 27th, 2020, 1:49 pm

HMM
Ok new to this fuel injection
How do I go about checking the fuel trims?

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Cheromaniac
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Re: injectors

Post by Cheromaniac » February 27th, 2020, 10:48 pm

jeeppoor wrote:
February 27th, 2020, 10:40 am
LMAO
It is a Frankenstein
But we are running a 98 computer
And blue ring stock injectors.
The stock injectors will probably be fine.

Cummins90
I made it to triple digits!
I made it to triple digits!
Posts: 109
Joined: May 14th, 2016, 10:29 am
Vehicle Year: 1996
Vehicle Make: Jeep
Vehicle Model: Cherokee

Re: injectors

Post by Cummins90 » February 28th, 2020, 4:42 am

If you used the 98 harness dos you retain the obd2 plug?

jeeppoor
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Posts: 14
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Stroker Displacement: 4.6
Vehicle Year: 1976
Vehicle Make: Juggy
Vehicle Model: Home made
Location: Michigan

Re: injectors

Post by jeeppoor » February 28th, 2020, 10:07 am

Yes
I am able to use a scan tool to ready if there is any errors.

Cummins90
I made it to triple digits!
I made it to triple digits!
Posts: 109
Joined: May 14th, 2016, 10:29 am
Vehicle Year: 1996
Vehicle Make: Jeep
Vehicle Model: Cherokee

Re: injectors

Post by Cummins90 » February 28th, 2020, 4:33 pm

Great hopefully your scanner has live data. Fire up the engine with the scanner connected and go to live data. Then find your fuel trims.

jeeppoor
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Posts: 14
Joined: September 16th, 2019, 6:14 am
Stroker Displacement: 4.6
Vehicle Year: 1976
Vehicle Make: Juggy
Vehicle Model: Home made
Location: Michigan

Re: injectors

Post by jeeppoor » February 29th, 2020, 1:50 pm

Nope is does not. very basic scan tool.
I will have to see if I can borrow one.
What numbers should I be looking for on the fuel trim?

Cummins90
I made it to triple digits!
I made it to triple digits!
Posts: 109
Joined: May 14th, 2016, 10:29 am
Vehicle Year: 1996
Vehicle Make: Jeep
Vehicle Model: Cherokee

Re: injectors

Post by Cummins90 » February 29th, 2020, 6:02 pm

32 and 32 for long and short fuel trims would indicate the maximum added fuel. If you have a functioning upstream o2 sensor there is little chance you are running lean.

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Cheromaniac
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Re: injectors

Post by Cheromaniac » March 1st, 2020, 12:17 am

jeeppoor wrote:
February 29th, 2020, 1:50 pm
Nope is does not. very basic scan tool.
I will have to see if I can borrow one.
What numbers should I be looking for on the fuel trim?
The fuel trims should be as close to zero as possible. If the numbers are positive, the ECU is adding fuel to correct a lean condition. If they're negative, the ECU is removing fuel to correct a rich condition.
If your vehicle has an OBD 2 diagnostic port, I suggest you buy an ELM 327 Bluetooth OBD 2 module and plug it in. You can download a scanning software such as Car Scanner onto your smartphone that uses Bluetooth to connect to your ELM 327. You'll then be able to view live data and create catalog files for future reference. The software will also detect DTCs. I've used it on my Mustang and it works great.
1992 XJ 4.6 Stroker - 5MT - Sold :cry: Stroker build-up, Stroker "recipes"
2006 Mustang GT - 5MT - Midlife crisis car :D with Mods

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SkylinesSuck
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Re: injectors

Post by SkylinesSuck » March 1st, 2020, 2:52 am

+1 for the Bluetooth reader.

jeeppoor
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Posts: 14
Joined: September 16th, 2019, 6:14 am
Stroker Displacement: 4.6
Vehicle Year: 1976
Vehicle Make: Juggy
Vehicle Model: Home made
Location: Michigan

Re: injectors

Post by jeeppoor » March 24th, 2020, 6:49 am

Haven't had a chance to test drive it yet.
But I was wondering it I ordered the Bosch 0280155703 injectors and installed them.
would they be too much for the motor if the stock ones we ok?
Or would this be a smart move and improve the performance?

Cummins90
I made it to triple digits!
I made it to triple digits!
Posts: 109
Joined: May 14th, 2016, 10:29 am
Vehicle Year: 1996
Vehicle Make: Jeep
Vehicle Model: Cherokee

Re: injectors

Post by Cummins90 » March 24th, 2020, 4:49 pm

I have 0280155784 or 0280155923 (240cc at 3 bar) 4 hole injectors.

Or

0280156161 12 hole injectors. I also have ev6/ev1 adapters. Let me know if you'd like a set.

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