Dragaholic

iTrader: (180)

I searched and searched and could not locate the number. I tried looking through Summit and Jegs but they list like 3 different 42s. What's the correct part number?

Also, comparing part numbers between Jegs and Summit, they don't match up.

Summit Racing:
M-9593-F302 $380
M-9593-F302F $495

Jegs:
M-9593-F302F $495
M-9593-F304 $263
M-9593-F304F $280

andereck

http://www.fordracingparts.com/parts...Fuel%20Systems

You'll notice the F series injectors are flow matched. If you want that you might be able to pick them up cheaper from Precision Turbo.

Dragaholic

iTrader: (180)

What's flow matched?

andereck

It means the injectors are graded based on flow and selected from like bins of injectors and put in a package. I don't know what the tolerance is they use.

Dragaholic

iTrader: (180)

So would you say I need or should stick with the flow matched set or just the regular ones? When I had the SVO 30s, I don't believe they were flow matched and never had a problem with them.

Billdog350

iTrader: (3)

They have flow matched 42#'s on fleabay for $280 shipped. Flow matching will give you optimal performance/tuning since each cylinder will be performing much closer than with non-matched injectors. If normally they can vary more than 7%...that means that you can be losing as much as 3.5hp (on a 400hp motor) per cylinder! You're tuning for the "average" so some cylinders could be 7% richer or leaner than the one next to it.

Will it hurt your motor? Probably not. But if you can get matched for similar prices to non-matched...isn't that a DUH?

Dragaholic

iTrader: (180)

By the way, the

M-9593-F302 $379

is also listed on Jeg's website, but its listed as a 41 lb. injector. I wonder if that's accurate or a typo.

By the way, I finally noticed that the 302 denotes package of 8 and 304 dentoes a package of 4.

Dragaholic

iTrader: (180)

How come they're so cheap on Ebay? How can you be sure they're new, flow matched, and the lb. that they're advertised as? On both Jegs and Summit, a set of flow matched 42s go for $495.

Blown04Z06

after you buy them you would have to get someone to test them to see if they are flow matched or not. its a risk on ebay versus buying from Jegs or Summit. racetronix is someone else that offers flow matched injectors. but there is no customer service if you buy from them directly. thunder racing carries racetronix products. im running SVO 42's, i bought mine used from a guy locally that was using them on his calloway twin turbo car, he upgraded to 60's. $200 used, they are working perfectly fine!

Dragaholic

iTrader: (180)

According to Thunder Racing's website, 50 lb. and bigger injectors are flow matched, however, smaller injectors can be flow matched as well. I wonder if they sell them already flow matched or you have to buy a set, them send them in.

HSV-GTS-300

Something worth noting is that the matched sets from Frod contain a card with the measured flows for each injector written on it. But the injectors in the box are not numbered.....so if you were hoping to put the slightly highest flowing injector in cylinder #7 for example, you got to guess which injector to pull out the box.

Dragaholic

iTrader: (180)

Racetronix flow matches them to 1% according to their claims. Not sure what Ford does. They say an unmatched set can vary from 5-7%. Even if you have a set that's matched within 1%, that's a whole lot better than 5-7%. I think at that point it wouldn't really matter where the injectors are placed because there are plenty of people here running SVO injectors that aren't even matched.

HSV-GTS-300

"Ford Racing has flowed a large quantity of injectors, and sorted and matched injectors with similar flow rates. These injectors are then packaged in sets. The end result is fuel injector sets with very small variations in flow. Typical production injectors can vary as much as 6 to 7 percent. These kits vary less than 1 percent, but typically vary less than .5 percent. The result is improved fuel control and optimized performance, driveability and economy. These injectors are attractively priced and cannot be duplicated for the price.

NOTE: These injectors are flowed at 40-psi differential pressure, and a flow data summary is included in the package."

Dragaholic

iTrader: (180)

HSV-GTS-300, I assume you're referring to the Ford injectors and if so, is your post about regular injectors or matched injectors?

Dragaholic

iTrader: (180)

Never mind, found those exact words on fordracingparts.com under high flow matched injectors.

PICNIC_GEORGE

iTrader: (3)

Do those ev1 injectors just plug right in or would new injector pigtails need to be soldered on? Also how do they fit into the manifold? I was under the impression the EV6 injectors were the same ones we use.

HSV-GTS-300

EV1 plugs right in to LS1 & LS6 looms and manifolds.

PICNIC_GEORGE

iTrader: (3)

Sweet thanks.
Since I jacked this thread I may as well add something to the topic.

TOP~ Ford racing matched injectors are supposed to be some of the closest matched injectors you can get. I have a set of RC injectors that are 0.91%(high 442.0cc and low 438.0cc) and they say ford racing matched are less than 0.5%. I would think that's pretty good.

Dragaholic

iTrader: (180)

Does anyone know if the SVO 42s will work with the L76 intake manifold?