At what point are larger injectors a good idea?
Thread Starter
Registered User
Joined: Jun 2000
Posts: 170
From: Madison,WI/Chicago,IL.
At what point are larger injectors a good idea?
Just what the subject asks.
Also, if the injectors are upped to something similier to a 30lb SVO, is it neccesary to upgrade the fuel pump?
Thans, Adam
Also, if the injectors are upped to something similier to a 30lb SVO, is it neccesary to upgrade the fuel pump?
Thans, Adam
Registered User
Joined: Mar 2002
Posts: 279
From: Vicenza, Italy
Bigger injectors are typically needed when you're doing a drastic rebuild such as a 383 stroker or a focred induction application (supercharger/turbo)
Other than that, I don't see a need to.
As faras the fuel pump is concerned I would imagine so but I'm not sure.
Other than that, I don't see a need to.
As faras the fuel pump is concerned I would imagine so but I'm not sure.
Registered User
Joined: Mar 2000
Posts: 186
They are needed when the duty cycle of your stock injectors pass 90-95%. You can "cheat" and increase fuel pressuer to make them act bigger, but this will only go so far. It is also a good idea to get bigger injectors when doing a dry nitrous kit as the stock ones are prone to locking up.
Bigger injectors are a must for stroker and supercharger build ups.
Use software like DataMaster to measure your duty cycle at WOT. Pay attention to higher RPMs where the window for fuel injection shrinks (6000rpm = 20ms window).
-Alex
Bigger injectors are a must for stroker and supercharger build ups.
Use software like DataMaster to measure your duty cycle at WOT. Pay attention to higher RPMs where the window for fuel injection shrinks (6000rpm = 20ms window).
-Alex
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