Hello, I'm trying to work out which to use, carb or injection. At the moment i have a 3.5 rover with a 390 holley but building a 4.6 to go in a TR7. Do i get and use a bigger holley or go for the injection. I'm looking for abit of power with some sort of economy, i do trackdays and fast road driving. If i go injection, which system do i use? Any ideas or views?
Thanks.
What to use?
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Hi Paul
there are alot of posts on this subject worth reading previous stuff on the same subject and there are two camps, one view says that a good 4 barrel and a good manifold are the way to go, and with a wideband lambda sensor it is certainly practical to set one up well .
The other is to go injection based on a bored out rover set up and an aftermarket controler (the standard one is a waste of time and money to try and reprogramme).
The costs are similar if you are comparing new carb and manifold with second hand injection manifold and either megasquirt or vems ECU and can re-use some of the sensors and do most of the work yourself, and are you buy a wideband lambda sensor to tune the 4 barrel (you will need a lambda for the injection anyway). Maybe 30 to 50% extra to do the injection if you have to pay someone to do most of the work for you. you could go exotic with bike throttle bodies which is more expensive but very tune-able and big bragging rights.
I faced a similar decision for my chevy build and I am going injection with megasquirt, for the chevy I am going throttle bodies so it will be alot of work to do.
Mike
there are alot of posts on this subject worth reading previous stuff on the same subject and there are two camps, one view says that a good 4 barrel and a good manifold are the way to go, and with a wideband lambda sensor it is certainly practical to set one up well .
The other is to go injection based on a bored out rover set up and an aftermarket controler (the standard one is a waste of time and money to try and reprogramme).
The costs are similar if you are comparing new carb and manifold with second hand injection manifold and either megasquirt or vems ECU and can re-use some of the sensors and do most of the work yourself, and are you buy a wideband lambda sensor to tune the 4 barrel (you will need a lambda for the injection anyway). Maybe 30 to 50% extra to do the injection if you have to pay someone to do most of the work for you. you could go exotic with bike throttle bodies which is more expensive but very tune-able and big bragging rights.
I faced a similar decision for my chevy build and I am going injection with megasquirt, for the chevy I am going throttle bodies so it will be alot of work to do.
Mike
poppet valves rule!
