EFI for roots blowers?

[LHC_SCV]

im looking for a EFi kit fr my roots blower.. does anyone know about the
rootz efi kit? i saw it at www.rootzefi.com or if anyone has any other suggestions thanks .

 

[Hammer]

Real nice guy,very intelligent. Email him and hill set you up

 

[Kylemenz1]

BoostPower has kits.

 

[PokerRun388]

http://boostpower.com/efi-systems-throttle-bodies-c-21_46.html?zenid=rp5q3q23tol9lgp2g8ff4se680

 

[LHC_SCV]

ok thanks... the rootz kit looks much nicer all the injectors are hidden and offer a plug and play kit.. just wondering if anyone else used rootz kit

 

[skav]

Get ahold of Dustin at Menace Marine in SCV. He's building complete EFI kits for roots blowers.
(661) 755-0620



Sent from my iPhone using Tapatalk

 

[DaveH]

in my OPINION, you are wasting time and money by putting all your injector before the supercharger.

One of the biggest reason for EFI is for very precise fuel delivery PER CYLINDER. this can only be accomplished by an injector in EACH cylinder port, this can not be accomplished by putting the injectors above the blower. you may as well stick with carbs.

the ONLY reason to put the injectors above the blowe ris to help keep the blower cool.

the RIGHT way to do this is with 16 injectors. 8 port injectors that deliver 80% of the cylinder fuel in the intake port, 8 injectors deliver 20% above to keep the blower cool. you could also stage the injectors so they dont come on above the blower at all at low engine speeds.

Sure, people do it with the injectors above the blower all the time. but ultimately engine longevity suffers with all sorts of damaged single cylinders.

just my .02.

dave

 

[Outdrive1]

BoostPower has kits.

X2.

 

[racinjason65]

in my OPINION, you are wasting time and money by putting all your injector before the supercharger.

One of the biggest reason for EFI is for very precise fuel delivery PER CYLINDER. this can only be accomplished by an injector in EACH cylinder port, this can not be accomplished by putting the injectors above the blower. you may as well stick with carbs.

the ONLY reason to put the injectors above the blowe ris to help keep the blower cool.

the RIGHT way to do this is with 16 injectors. 8 port injectors that deliver 80% of the cylinder fuel in the intake port, 8 injectors deliver 20% above to keep the blower cool. you could also stage the injectors so they dont come on above the blower at all at low engine speeds.

Sure, people do it with the injectors above the blower all the time. but ultimately engine longevity suffers with all sorts of damaged single cylinders.

just my .02.

dave

rootzefi also has a set up that runs 16 injectors, the 8 above the blower to cool it and 8 in the intake runners (such as on my hogan's blower manifold) and at least for me, seems like the way to go.

 

[BoostPower]

in my OPINION, you are wasting time and money by putting all your injector before the supercharger.

One of the biggest reason for EFI is for very precise fuel delivery PER CYLINDER. this can only be accomplished by an injector in EACH cylinder port, this can not be accomplished by putting the injectors above the blower. you may as well stick with carbs.

the ONLY reason to put the injectors above the blowe ris to help keep the blower cool.

the RIGHT way to do this is with 16 injectors. 8 port injectors that deliver 80% of the cylinder fuel in the intake port, 8 injectors deliver 20% above to keep the blower cool. you could also stage the injectors so they dont come on above the blower at all at low engine speeds.

Sure, people do it with the injectors above the blower all the time. but ultimately engine longevity suffers with all sorts of damaged single cylinders.

just my .02.

dave

I agree if your sc can run dry, we have Snd can make any type of custom EFI set up you want. The others mentioned we have not used however they seem cool.


Sent from My Boostpower Marine Efi Beacon.

 

[Don Johnson]

in my OPINION, you are wasting time and money by putting all your injector before the supercharger.

One of the biggest reason for EFI is for very precise fuel delivery PER CYLINDER. this can only be accomplished by an injector in EACH cylinder port, this can not be accomplished by putting the injectors above the blower. you may as well stick with carbs.

the ONLY reason to put the injectors above the blowe ris to help keep the blower cool.

the RIGHT way to do this is with 16 injectors. 8 port injectors that deliver 80% of the cylinder fuel in the intake port, 8 injectors deliver 20% above to keep the blower cool. you could also stage the injectors so they dont come on above the blower at all at low engine speeds.

Sure, people do it with the injectors above the blower all the time. but ultimately engine longevity suffers with all sorts of damaged single cylinders.

just my .02.

dave

I am not an EFI guru... I agree that EFI makes sense to take advantage of individual cylinder tuning capability below the blower. That said, I am puzzled over your comment on injectors above the blower and damage to individual cylinders. My 1170's are 14:71 blown with Dominator carbs and are tuned near perfectly without fuel distribution problems to individual cylinders per GT Performance dyno and 5 years of real life application. That said, how is a carb any different from injection above the blower relative to air/fuel distribution to the cylinders?

 

[BoostPower]

You are correct, if distribution is great, then cold start, fuel
Mileage and alarm monitoring are your main advantages. If your fuel distribution is great it would be amazing though. You would want to review the egt per cylinder report from idle to WOT To verify. 👍


Sent from My Boostpower Marine Efi Beacon.

 

[RUNNINHOTRACING163.1]

rootzefi also has a set up that runs 16 injectors, the 8 above the blower to cool it and 8 in the intake runners (such as on my hogan's blower manifold) and at least for me, seems like the way to go.

Ditto
local fountain running around the river with the rootzefi and seems to run flawless and he runs the ch!t out of it :thumbsup











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[DaveH]

I am not an EFI guru... I agree that EFI makes sense to take advantage of individual cylinder tuning capability below the blower. That said, I am puzzled over your comment on injectors above the blower and damage to individual cylinders. My 1170's are 14:71 blown with Dominator carbs and are tuned near perfectly without fuel distribution problems to individual cylinders per GT Performance dyno and 5 years of real life application. That said, how is a carb any different from injection above the blower relative to air/fuel distribution to the cylinders?

not trying to start a pissing contest with Gary or anyone else around here.

what i am saying is that when you put the fuel above the blower it really doesnt matter if it comes from an injector or a carb. Air and fuel distribution through the blower and down to the intake is not consistent to each cylinder, period. I agree with Alexi that the only way to know is either with EGT or WBO2 sensors on each cylinder. The problem is, what can you do if you find one cylinder that runs hotter than the others? nothing, or tune to cool that cylinder and 7 others suffer. thats why if you are going to go through the expense of going to EFI, you cant take advantage of the benefits it offers by putting all the fuel above the blower.

people are doing it all the time, becasue its the low cost way to do it. thats great that you have an engine with 5 season on it. But how many hours of actual use? there are other factors too, how much boost you run, how generally "conservative" your tune is (lost power and poor fuel economy), how hard you drive it, and so forth.

Im simply trying to state that a top mount kit is really no different than the carbs you have. it looks cool, and probably would have the added benefit of better ignition control with a MAP based spark curve. But if you are going to go through the expense of buying an ECU, changing fuel delivery, go the extra distance and put in a crank trigger and 16 injectors, and certainely dyno it when done. your engine will thank you for it by making more power more reliably and live longer.

 

[BoostPower]

not trying to start a pissing contest with Gary or anyone else around here.

what i am saying is that when you put the fuel above the blower it really doesnt matter if it comes from an injector or a carb. Air and fuel distribution through the blower and down to the intake is not consistent to each cylinder, period. I agree with Alexi that the only way to know is either with EGT or WBO2 sensors on each cylinder. The problem is, what can you do if you find one cylinder that runs hotter than the others? nothing, or tune to cool that cylinder and 7 others suffer. thats why if you are going to go through the expense of going to EFI, you cant take advantage of the benefits it offers by putting all the fuel above the blower.

people are doing it all the time, becasue its the low cost way to do it. thats great that you have an engine with 5 season on it. But how many hours of actual use? there are other factors too, how much boost you run, how generally "conservative" your tune is (lost power and poor fuel economy), how hard you drive it, and so forth.

Im simply trying to state that a top mount kit is really no different than the carbs you have. it looks cool, and probably would have the added benefit of better ignition control with a MAP based spark curve. But if you are going to go through the expense of buying an ECU, changing fuel delivery, go the extra distance and put in a crank trigger and 16 injectors, and certainely dyno it when done. your engine will thank you for it by making more power more reliably and live longer.

Some times you can run multiple efi controllers above the blower and still get cylinder egt close by scuing/trimming an injector bank. This acts like staggering jets in a carb. The high pressure EFI atomizes the fuel better at all Rpm were carbs are Soso at idle.😊


Sent from My Boostpower Marine Efi Beacon.