This video will answer alot of questions.

 

Stuff!!

Had very good luck with 24 lb Bosch injectors (89 C4)

 

Thank you very much for the video. Very educational.

 

Cool Video....Thanks - you have shown people what I have been trying to tell them for years about how important it is to have GOOD atomization in order to get good performance.

 

Very nice informative video. Thanks, and welcome.

 

Was informative, to an extent. More of an infomercial if you ask me. Val now just $169.95 a set....

 

This is a must see vid for everyone. If anyone wants a set of pink tops that have 25K on them I'll sell 'em for 100 bucks. At 170 for a set of gen3's those are worth the extras money....

Many thanks for the time and effort to put this video together

 

Great video, thanks! Did you notice that when the psi was turned up to about 60 the (oh gosh :o ) Ford's still had a good flow pattern.

 

This is something everyone should see. Outstanding demo!!! Can't wait until I get my design III in. Thanks for posting that.

 

It appears that the major difference between injectors is in the width of the spray pattern.

All the injectors have about ths same amount of fuel injected and spead over an area. Some appear to be over rated in fuel flow.

The lucas type sprays a narrow and forceful pattern. The others spray a wider less forceful pattern. I have the new Trick Flow injectors. They are the disc type but the nozzle has 3 very fine holes. I can't see how it could possibly spray straight as a pencil. I think the Accel, Trick Flow and the Summit Racing injectors may be made by the same manufacturer but are different.

I'm not sure that a wider spray pattern means greater fuel atomization or increased performance

I believe that the fuel air ratio is regulated by the ECM.

My 88 Vette emissions was very clean and passed a California smog with the pencil spray pattern injector.

The pencil spray forces the fuel into the combustion chamber. You can see the force of the spray in the video. The others do appear to have a finer mist. I'm just not sure if a wider mist actually burns fuel any differently or more efficiently than the pencil mist. The atomization could be identical but sprayed in a different pattern.

I think you need the right size injector, good ECM calibration, proper fuel pressure and a good ignition system for a clean burn and good performance.

I think the Multecs are a poor choice because they are unreliable. The Fords are too noisy.

I really think the average Vette driver wants reliable performance.

Thanks for the video. But, I'm still not convinced that rebuit injectors are the way to go. I just can't believe that a used injector will have the same longevity as new.

I did a comparison of the Accel, Trick Flow and Summit brand. They are different. (See specs below)

Brand
Summit
ACCEL
Trick Flow Specialties

Product Line
Summit High-Flow Fuel Injectors
ACCEL Fuel Injectors
Trick Flow TFX (TM) Fuel Injectors

Part #
SUM-240024
ACC-150124
TFS-89024-1

Price
$249.95
$46.69
$38.00


Description
Fuel Injectors, 24 lbs./ hr., 11-13 Ohms Impedance, 12 V Saturated Circuit Driver, Ford, 5.0/ 5.8L,Set of 8

Fuel Injector, 24 lbs./ hr., 14.4 Ohms Impedance, 12 V Saturated Circuit Driver, Universal, Each

Fuel Injector, TFX, 24 lbs./ hr., 12 V Saturated Circuit Driver, Universal, Each

Driver Type
12 V saturated circuit
12 V saturated circuit
12 V saturated circuit

Fuel Rail O-Ring Outside Diameter (in)
0.590 in.
0.574 in.
0.590 in.

Injector Advertised Flow Rate (cc/min)
-
255.0cc/min
-

Injector Advertised Flow Rate (lbs/hr)
24 lbs./hr.
24 lbs./hr.
24 lbs./hr.

Injector Impedance
11-13 ohms
14.4 ohms
14.5 ohms


Injector Plug Style
Bosch/Amp-style
Bosch/Amp-style
Bosch/Amp-style

Manifold O-Ring Outside Diameter (in)
0.590 in.
0.573 in.
0.590 in.

Notes
-
-
-

O-Rings Included
Yes
Yes
Yes

Outside Diameter (in)
0.941 in.
0.943 in.
0.971 in.


Overall Height (in)
2.830 in.
2.880 in.
2.830 in.

Quantity
Sold as a set of 8.
Sold individually.
Sold individually.

Seat to Seat Height (in)
2.392 in.
2.270 in.
2.153 in.

Wiring Harness Included
No
No
No





Have any Questions? Give us a call at: 1-800-230-3030 or 1-330-630-3030


Provide Feedback | Site Map | Terms of Use | Privacy & Security
Copyright © 2008 by Autosales, Incorporated
dba Summit Racing Equipment | Trademarks

 

Fred according to one of your earlier post. you installed trick flow
24's. That injector has a 3 hole discharge that produced a nice wide pattern similar to the bosch design 2. Its not a single hole like the one in the video. If you want I can show yours on another video for you. I have that injector. Atomization is essential for a good mixture. Emmisions won't show these unburned fuel because the test is done at idle. If you had a dyno and ran an engine through all rpm ranges for an hour you will see wet headers with an oversized injector . The point is, running rich over a long period of time will cause unnessasary wear of cyl walls, hot spots on the valves, causing premature valve jobs, etc.
This is why sizing and flow matching is important. New injector sets are never 100% balanced so one cyl can be a little rich or lean. You will never know this unless you can measure AFR cyl by cyl. We can on a good dyno. Our sets are all flow matched. Bosch has spent millions in research and development developing the next generation of injectors. The GDI (gasoline direct injection) this injector has a nozzle pressure of 1600 psi. Go to this link and watch the first video on the page.
http://www.fuelinjectorconnection.co...iewCat&catId=3
This is a new Bosch GDI injector. This is as perfect as you can get. If atomization is not important. why waste the money. Under most normal driving conditions, up to speeds of about 75 mph, the GDI engine operates in ultra-lean combustion mode for lower fuel consumption. In this mode, fuel injection occurs at the latter stage of the compression stroke and ignition occurs at an ultra-lean air-fuel ratio of 30 to 40 ). The next generation of chevy engines will use this injector. As far as rebuilts, If an injector is cleaned and tested properly, they will perform as they are intended for years. There are some guys in this business that shortcut the process. You probably got one of these. I will say that a balanced set of rebuilts for half the money as new is a worthwile investment. Also, you say the Bosch/Fords are noisy. The only one I found to be noisy is the Pink Top 22. The new Design 3 are very quiet.
I hope Jesse would comment on this.

 

It looks like the Multecs work best of all the injectors. Atomization and pattern seems to be superior to all the others. It seems that fuel economy should be better with the Multechs than with the Bosch type 3 injectors. On a near stock engine why would anyone want to pull the Multecs if they are working correctly?
Another question, why would anyone want to turn their fuel pressure up to 60 psi on a 43 psi injector?

Nice tutorial BTW

 

Thanks for verifying that the Trick Flow sprays a fine mist. I was confused because you said in the video that the Lucas, Accel, Summit Racing and Trick Flow were all alike and sprayed a pencil pattern. I do see your point about the pencil pattern being inferior. My Vette had clean emissions with the old type Accels. That just proves that the cat was good. It doesn't make the Accel a better injector. I'd like to see a video comparison of the Trick Flow, Summit Racing, Lucas and Accel 24 lb.

 

Guys, it was informative in the same way an infomercial is informative.

It was done by and for a company that sells rebuilt BOSCH injectors. The results are predetermined.

For example, what was the point of turning up the PSI to 60? I didn't get that.

 

The multec does have a nice pattern etc. But the one in the video had to reconditioned to work like new,,These are very prone to dirt etc. causing the coils to overheat. Thats why a ohm test is so important to these. These multecs have a ball and seat, the ball gets distorted from heat and use. so, we do not sell these as rebuilts because they are unreliable. When they are dirty they do not flow like the one in the video. I think i will do a video with a set that has not been cleaned. Then you can answer the question yourself. I will also compare the flow rates of a uncleaned set. As far as the fuel pressure going to 60. You are right, why run them at 60. As the coils start to get weak, i have seen these stop at 43-50. I see alot of posts on the forum where a car has a stumble or miss under full throttle acceleration. The replys to these posts are "replace plugs, wires, filters, o2 sensors, map sensors, cats are clogged etc.) these guys will spend hundreds on parts replacing and still have the problem. Well, has anyone ever thought that at WOT the fuel pressure is spiked to the highest because the FPR is closed. If you have a weak multec and the pressure spikes under WOT, the injector will shut down untill the pressure is released, it takes abourt 1 second to due that. There is that hesitation. All the scans in the world won't pick up this problem. All my company does is offer a good reliable product, if you need injectors give us a try, if you want your injectors serviced, give us a try. With over 30 yrs in the business I can at least offer some good tech.

 

Is this your video?

 

Fred
I will do that , producing videos is a little time consuming so it might be next weekend before I can get time. But, I will do it.

 

of course its my video. there's no tricks. the point of the multecs failing is in my last posts. Is my video so good that it looks like a professionally done infomercial? I believe an infomercial would have the following:
Call today my phone number is:770 888 1662 Oh I forgot this also:
our website is WWW.fuelinjectorconnection.com

You are a supporting member, this forum is paid for by you getting new supporting vendors like myself. I spent good money so I can talk about our products and offer "REAL" advice to the majority of the guys on the forum. I take my business very seriously. If this is an infomercial, so be it. An infomercial should have content that gives information to its viewers. How many people actually have ever seen a fuel injector flow as its in your car. Why are you a supporting member?. I hope it is to help like I am trying to do.

 

In which case, thanks for making the video. I misunderstood the origin of the video and thought it was random find. I did not realize that you put it together specifically for the forum.

Thanks again.

In which case, I have a question. I noticed that one of those injectors seem to have the triangle shaped pattern. I suspect that these would be the disc style injectors.

They seem to atomize fairly well. What's your thought on that?

 

What flow rates do the Bosch Gen IIIs come in?

Didn't the Multecs get better in late C4s?