leperboy

I'm getting ready to do an intake R&R, with new injectors as part of it. I have been reading the archives and doing some online research. I didn't see a preference between the Accel or the Ford Racing 24# injectors for an early 32V.

Do people have a preference? Any experience with one or the other?

Do the Ford Racing and the Ford Bluetop both have the four-hole sprayers?

I am looking at the Ford PN: FMS-M-9593-A302 and the ACCEL PN: 150824 (same as 150124, except comes as set of 8).

I notice the dimensions are different between the ACCEL and Ford part.
Total height: ACCEL is 2.880 (0.165 in shorter than Ford)
Manifold O-ring OD: ACCEL is 0.573 (0.028 in wider than Ford)
Fuel Rail OD: ACCEL is 00.574 (0.051 in wider than Ford)

I can see the O-ring ODs being fixed using different rings, but how does the height difference impact the installation?

Most likely I will go with the Ford Racing injectors, but want to hear all opinions.

Thanks,
Matt

JHowell37

I have the injectors from Ford that you've mentioned. Ford Racing/Ford Bluetop are the same thing and they have the 4 hole ends now. Some people say the Ford injectors are noisier then the originals. My car has glasspacks so I really can't tell the difference.

Many folks will insist that you should get your current injectors refurbished and save $100. They'll tell you how the place will flow test the injector and all sorts of other stuff. Flow testing is pointless since the flow can't be adjusted and the refurb is little more then an ultrasound cleaning (like the jewelry shops do) and a replacement of the pintle caps and o-rings.

Some people insist that this "rebuilding" is fine since injectors don't wear out. Some folks think they lack moving parts. Here's the thing. Injectors flow gasoline, then they stop, then they do it again, then they stop again, etc. They do this millions of times throughout the course of their life. Unless magic fairies live in the injectors to control the fuel flow, how would they open and close so many times if they had no moving parts? The mechanism is rather simple and controlled by an electric pulse but it does move nonetheless. And moving parts will break down over time. Then there's the issue of leaks that can develop in the injectors that o-rings won't fix.

So basically a rebuild will get you a 20+ year old injector with new o-rings. Refurbishing hardly sounds like a bargain when an extra $100 will get you a brand new set that are a revised and updated design.

It is now time for visual aids.

Since the naysayers will argue that I don't know what I'm talking about, I will post pics of an old injector with the o-rings and pintle cap in place.


The next photo is a leaky injector. I removed the pintle cap and o-ring to see if I could find the source of the leak.


And in this last picture the source of the leak is indicated by the tip of the pen. It was leaking where the outer housing is pressed/crimped on to the inner mechanism. This kind of leak CANNOT be repaired by these erstwhile injector "rebuilders." In addition, one can surmise that if one injector begins to leak the others that have existed in the same environment will probably begin leaking before long as well. These things can leak a lot of fuel rapidly. Maybe not as fast as a rotten fuel line, but close enough to cause a major fire hazard.


Go with the Ford injectors. Several of us have them. They fit. They work. The o-rings are the right size. The benefits of the extra cost outweigh the potential headache of using the accels (unless someone here can vouch for the accels that is.)

Bill Ball

J, that's one nasty looking injector to begin with. I'd sure get new ones if mine looked like that!

Mrmerlin

I have the Ford 19# in my 88 S4 they have been a great upgrade they have the 4 hole design slightly better fuel economy and a smoother idle , and it is easy to start hot or cold, well worth the price of addmission

SwayBar

JH, that was good, well-documented post!

Imo000

JH,

I've been sayting the same exact thing for a while now but some peopel just don't get it.

As JH and otheres have said, the Fords are a direct fit. Even the O rings are the correct size and for ~$300 for a set of 8 is a real bargain!

BIMMERMIKE

pm sent

leperboy

Once I pull mine, I think I will have a couple candidates that set a new low for filth.

Thanks for the info, folks. I will go with the Fords. $40 difference isn't enough to worry about when spending $1K+ on parts for the intake R&R.

Matt

Cliff Ruckstuhl

I wished this had been posted 2 weeks ago, I just had mine sent out to be cleaned and balenced. All went well and car runs fine. Cost of having them cleaned was $190.00 but it was another $100.00 for the new O ring set.

Cliff 87 S4 Murf # 44

Imo000

This topic was discussed several times over the last year.

Did you at least get the O rings from Tim? If I'm not mistaken, he has a large batch of the proper sized O rings for the S4-up 928s and was selling them in as a set. Much cheaper than the OEM kits.

Cliff Ruckstuhl

I must have missed it, it never occured to me to install a different injector. I had the shop install the O ring set while they had them. They were selling the O ring set for the same price as 928 Inter

Cliff S4 Murf # 44

Ted928

I replaced my 1986 injectors with Accel four months ago for $220. No problems, direct replacement.

928SS

fords work fine even in modded motors too might consider the balanced set - they seem to be matched more closely than a bunch of stuff that fell off the line into a box.

JHowell37

I'd have to agree that even the matched sets of Ford injectors are a steal at $400. If I had forced induction I'd definitely go with a set of them.

An interesting thing worth mentioning about the Ford injectors is that they have a Ford# on one side and a Bosch number on the other. The Bosch # on the original injectors is 0280150706. I read somewhere that Bosch no longer makes this injector. Of course they have a replacement available. The Bosch # for the replacement is the same Bosch # on the side of the Ford injector. So basically, the Ford injector would actually be the specified replacement. I'd also bet that Ford has cranked out more of the 19lb/hour and 24lb/hour injectors then Bosch when you figure in how many millions of Mustangs, F-series pick-ups, Crown Vics/Grand Marquis, Town cars, and t-birds/cougars/Mark VIIs they built with the 302 and 351 engines. The number would be quite a lot of if they've been making injectors in-house since the mid-late 80s.

928SS

if you've seen the differences btwn cyls on a NA motor w/a sharktuner - matched makes sense w/HP NA motors too I'm running at 90% w/my 24 #ers now and if the new intake pushes them much more, I'm definetly going to matched for the 30#ers.