Mustang Injectors in an M42 engine

[SkidMark]

Hey there,
It does sound like a afm problem to me... If the afm is bad the signal to the dme would be corrupt resulting in the dme sending the wrong info to the injectors..  But, you need to start somewhere so I would have your injectors cleaned just to know that they are indeed fuctioning properly.  I am not sure where you live but a reputable shop will charge around $20 ea to sonicly clean and test the spray pattern. Then, maybe barrow a buddies afm? Or swoop on on ebay, like $50?... Skid

[thedguy]

I figure I'll throw my $.02 in here...

A long time ago I used junkyard mustang injectors that I did the "DIY rebuild" using a kit online and soaking them in carb cleaner.  I don't honestly recall much of an improvement.

About a year ago I bought a set of rebuilt ones on ebay (they were being sold for a JEEP as they came in a pack of 4 rather than paying extra for .  These were flow matched and cleaned professionally for $100 shipped to my door.

Car, when cold, starts quicker than my brand new Ford Focus.  Sometimes it'll fire up in 1 crank of the starter.  Hot start isn't the greatest but I think I'm dealing with another issue there.  Mileage went up from an average to 26 to 29. 

I should note I live in the land of good weather and sunshine known as southern California.  We have crappier, 10% ethanol added gas.

[selespeed]

Hey there,
It does sound like a afm problem to me... If the afm is bad the signal to the dme would be corrupt resulting in the dme sending the wrong info to the injectors..  But, you need to start somewhere so I would have your injectors cleaned just to know that they are indeed fuctioning properly.  I am not sure where you live but a reputable shop will charge around $20 ea to sonicly clean and test the spray pattern. Then, maybe barrow a buddies afm? Or swoop on on ebay, like $50?... Skid

I live in Malaysia/Singapore. I checked with mechanic here but he's not sure where to do this kind of injector cleaning. Anyway, I'll find out.

[selespeed]

I figure I'll throw my $.02 in here...

A long time ago I used junkyard mustang injectors that I did the "DIY rebuild" using a kit online and soaking them in carb cleaner.  I don't honestly recall much of an improvement.

About a year ago I bought a set of rebuilt ones on ebay (they were being sold for a JEEP as they came in a pack of 4 rather than paying extra for .  These were flow matched and cleaned professionally for $100 shipped to my door.

Car, when cold, starts quicker than my brand new Ford Focus.  Sometimes it'll fire up in 1 crank of the starter.  Hot start isn't the greatest but I think I'm dealing with another issue there.  Mileage went up from an average to 26 to 29. 

I should note I live in the land of good weather and sunshine known as southern California.  We have crappier, 10% ethanol added gas.

Here we have Ron 95 97 and 100 gas. Shell V Power Racing is highest octane rating

[thedguy]

I thought I might add that I stuck a wide band o2 in my exhaust last night and did some pulls and steady state driving using the Mustang injectors on my e30 318i.

Car rarely deviated from the mid 14's in air fuel ratios, even under acceleration.  Cruising AFR's were 14.9, idling 14.9-15.1. under acceleration is was low 14's.
This was after the catalytic converter though, so I'm sure that affects the numbers.

[Esprit Motorsports]

Running early Ford motorsport 24lb 4 hole injectors found in Mustang Cobras and more importantly pick-ups and vans with 460 (7.5 L) V-8's.

installed in a 1991 E30 318is with the 'stock header turbo build' in the thread that we wrote up here in May 2011 as Esprit Aviation. Engine is entirely stock except for our Esprit Motorsports single row timing chain conversion. It has approx. 145K miles on it and has never been rebuilt.

Updated since then: 8psi, saab 900 intercooler, Aeromotive RRFPR
@60psi base pressure

"Witchhunter performance data was obtained from actual flow bench testing at our shop and should be used as a guide only."

Data from Stan Weiss site is virtually identical. Thanks to both for providing detailed info.

Stock: 0-280-150-714 15.8 ohms .9A   192cc @ 3 bar   18.25

1992 Saab 900 Turbo:0-280-150-761 15.8 ohms .9A   240cc @ 3 bar   

1993 Ford F-250: 0-280-150-947 14.3 ohms 1.0A 260cc @ 3 bar

Alternate Ford v8-5.0l, Truck v8-7.5l part number   F55E-A2E       

The Ford -947 and F55E injectors will use .1 Amp more than the stock BMW injectors

Monitored with NGK AFX Powerdex wideband A/F ratio meter: 11.5:1 to 12:1 AFR at WOT; 14.5-14.7 at idle and cruise.

My son successfully ran the car in the Zone 1 PCA at Watkins Glen on June 7-8. Youtube video link to be posted soon

[sh123]

hi

seeing as this thread seems to be the main injector thread on here i thought id ask here

currently getting a m44 built :

2.1 stroker
12:1 compression
big cams
ported head

will only be used for competition use if this makes any difference.

what sort of spec injectors am i looking at? was thinking euro m3 e36 spec injectors but they seem very similair to m44 injectors anyway?

cheers
Sion

[Warsteiner]

Sion,
I used the 947's, which are also the Ford Motorsport inj's, on my 2.045L stroker. Plenty of fuel. I'm running Alpha N with MAP, cams, ported head, bigger headers and dual exhaust.

Cheers,
~Ralph

[sh123]

Great ralph.

Just the answer i needed. Found a few on ebay now at decent prices.

What power have you got from your engine with that spec?

Cheers
Sion

[Warsteiner]

Compression Ratio 10.9:1

Horsepower   212 @ 6875

Torque  163 @ 4175     172 @ 5950

Redline  7500 rpm

[sh123]

Sounds very good.  Is this on itbs?

[zaidddd]

please advise me my old injector is d3761fa (0280150501) stock injector. i need to upgrade it please help me> if mustang 0280150700 or 0280150556 ??
i need smooth and good idle>

[zaidddd]

The same i need any one tell me if put 280150700 or dont change 280150501 (1739242 D3761fa ) lucas injector stock .
please any advise

[Warsteiner]

2+ years later..... I hope that you figured it out by now sh123! LOL  Yes I'm running Dbilas ITB's.

zaidddd...you didn't say why you need to change injectors. Esprit Motorsports has a nice post for a couple of injectors  a few posts above.

I wouldn't use mine if you've got a stock motor. If you have a stock motor with a chip I'm not sure how much the DME will be able to compensate for changes in fuel rates.

What are you trying to accomplish? Why not have your injectors cleaned? IF the car isn't running well then just cleaning the injectors could make the world of difference.

Here are 2 websites you can go check and see what you're trying to do for yourself. Remember that the 318 uses high impedance injectors.

http://www.users.interport.net/s/r/srweiss/tableifc.htm

http://www.witchhunter.com/injectordata1.php

Cheers,
~Ralph

[zaidddd]

thanks for that but need smoth idle and new tech not the old one holes. and need to have more mile in this update.
but when I check the old one d3761fa and the mustang 700# I see mustang cc is less and lbs. If any one try in 318is if it good or have problem.
thanks friends