Racetronix Fuel Injectors

[TODD L GRIFFITH]

Watch out! I swapped out my SVO 30# 36# @ 58psi injectors. The Racetronix are physically shorter and a %^&*% to control. My SVO's are reinstalled and I'm a happy camper again. No refunds at Racetronix, so beware. Chalk it up to bad experience............!

 

[Hib Halverson]

This is just another anecdotal account of people using off-brand aftermarket injectors that has me continuing to believe that the only source for aftermarket electronic fuel injectors is RC Engineering. Not only do they make a quality product, but they, also, actually know something about injectors.

It seems to me that this "Racetronix", if they sell you an injector that is physically too short and which is hard for the engine controls to manager, might be a poor source for injectors.

Of course, I'm not convinced that Ford SVO injectors are all that good either. Have you had the SVO injectors flowed? If so, what was the flow spread?

 

[TODD L GRIFFITH]

Hey Hib,

No, have not had them flowed. I have had good experience with the SVO's in my 99 FRC and the 03' ZO6. I attached a pic. of the Racetronix and a stock LS6 injector. Tell me what you think.

 

[Hib Halverson]

What do I think?

1) The SVO injector shown in the image is clearly different. It looks like an early (85-86) L98 injector rather than one which belongs on a Gen 3.
2) SVO injectors are cheap Bosch units not designed to the standards even your OE injectors meet.
3) I wouldn't put old-style Bosch injectors in any engine I owned, no matter what cool name is on the label.
4) People who think SVO injectors are great just because Ford stamps "SVO" on them are victims of marketing.
5) Real high-performance and/or racing injectors come from RC Engineering, are an offshoot of the Lucas Aerospace design and are not cheap.

I've had the injectors in my LS6 flowed and Russ Collins told me that currently (this was about six months ago) he did not offer a late LS6 injector but was working on one and, until then, my stock LS6 injectors are find. They were flowing very well and were very close in their spread.

 

[TODD L GRIFFITH]

Hib, the injector on the right is the Racetronix injector above, not the SVO, and is a Delphi/Lucus injector. http://www.racetronix.com/621020.html The SVO injectors are about the same size as the stock injectors, I believe about a .3mm difference in height. I know what you mean about the RC injectors and have been looking at their website, seeing you recommend them. I'm also in the process of getting some deeper calibrating software to tune my new cam installation, and looking for some dyno time and adjustments. I am running the 30# right now. The injectors were bench tested @ 43.5psi., and are 35# @ 58psi., which is close enough for now to meet my needs until I obtain a set of good 36# injectors. I guess you get what you pay for is true here.
I didn't buy the SVO's because of the name. They were not advertised as SVO, but I needed to meet my old output of 440hp at the flywheel, and those 30# injectors calculated out in the 35# range @ 58psi. I saw a pic. someone posted of an SVO and they are identical to mine, the only reason I think they are SVO's. I found the pic. of the SVO and the stock. I think their measurements are wrong though lol!

 

[Hib Halverson]

I guess I'm a bit confused, then.
The earlier post you made mentioned SVO injectors and the unit at the right in the image looked like a Bosch.

Admitedly, the older style Delphis also look kinda like Bosch.

Interestingly, Delphi has since bought the old Lucas Aerospace injector mfg. business and the current OE Corvette injector is made by Bosch---but it is not the same Bosch as Ford SVO sells as a "performance" injector.

As for your need to tune your new cam. Before you try and DIY and injector selection, I encourage you to call RC Engineering. Ask for Russ Collins. Tell Russ I suggested you call and ask him his recomendation as to injector and fuel pressure.

One problem with selecting injectors is many do it based on what they read on the Internet and, when it comes to fuel injector information there is a hell of a lot of bull **** info on the I'net. Conversely, there are very few people in the aftermarket who really know high-perf and racing electronic injectors and fuel delivery issues. Russ Collins is one of them. He has customers world-wide coming, looking for his skills.

To be honest, with 440 hp, you shouldn't need to make much of a change. When I went from 405 to 500 hp with an LT5 I only went up one "size" in injector, left the fuel pressure alone and had Z-Industries do the calbration.

 

[TODD L GRIFFITH]

Tuning is all done on the Z except for tweaking (my tuner asked me for the LTFT @ 55mph) then dyno and final adjustments. My old crank hp was 440 before the cam install, but now I should be in the 500hp range at the crank. I left the 30# injectors in, and they are 36# @ 58psi. anyway and should be fine. My tuner did an excellent job on the programming and now I can go to 7200rpm without any problems, especially what I spent on that upgraded Comp valvetrain. The only thing my tuner asked for was the stock MAF sensor to be put back on to get an accurate calibration to his program, so I reinstalled it. The car idles sweet and restarts without any fuss. I have alittle higher idle by about 50-100rpm and throttle position went to 8% from 7% which did the trick. It's great what a good knowlegeable tuner can accomplish, because he also did alot of extra deep calibrating. This guy I found is well known in tuning ZO6's and is located where else, but Daytona Beach FL. He is a very busy guy, but got mine done well ahead of time. I'm a happy camper, well worth it and money well spent.