Fitting 60lb injectors to the stock fuel rail.
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Thanks, that's what I'm leaning towards. I do a decent amount of track events so the reduced lag would be great, and I don't think I wan't to invest the money in the car to get to 700hp.
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Yes. The car would run very rich with out the proper ecu calibration.
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While we are talking injectors what is the equivalent in lbs for a 900cc injector.
Just done a search..We are using 85lb injectors on the stock fuel rail
Just done a search..We are using 85lb injectors on the stock fuel rail
Last edited by Neil@Orton; Feb 24, 2008 at 10:57 AM.
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Great info Kevin. Have you personally ever seen failures due to similar modification? or is this more a sort of speculation?
I agree using a spacer will cause the injector to leak if the rail is improperly modified causing the injector to sit at the improper angle. This is something that can be easily avoided with a little care.
I am also fully aware of maf issues at higher air flow. I am currently working on a few solutions (one of which retains the stock bosch maf) that are slightly different then what is available in the current market place.
Thanks again for your post.
I agree using a spacer will cause the injector to leak if the rail is improperly modified causing the injector to sit at the improper angle. This is something that can be easily avoided with a little care.
I am also fully aware of maf issues at higher air flow. I am currently working on a few solutions (one of which retains the stock bosch maf) that are slightly different then what is available in the current market place.
Thanks again for your post.
As Markski has pointed out and many other Tuners that have this mod have found out
Already >> Using a spacer whether it is nylon or aluminum to steel will cause injector
leaks or worse>> our engines don't have solid motor mount, but fluid dampers. If you do a heavy drag launch you will wrench you drivers side fuel line. The line hangs and lifts the drivers side fuel rail. This occurs because there isn't enough support on the rail..
If you just install blocks or spacers under the rail, the thin gauge metal does not have
any support. Look at the rails, there is side reinforcement on each side but when you extend the mounting point torwards the outside of the rail, you lose your support and increase the chance for metal fatique Yes, you are securing the rail down to the intake injector block, but there is no support to hold the injector (not enough down force) in the injector blocks.. The failure will vary from injector intake air leaks to fuel leaks.. Fuel and turbine housings usually don't have a nice ending.
Tuners like EVOM's will actually weld blocks and increase the thickness of the mounting base. Kaspar at Imagine Auto actually will cut and re-weld the factory extensions. Proto makes a block with screws to extend the rail. I cut off the factory base and reweld a lower mounting base that is the proper thickness. Again the problem is that most aftermarket injectors are longer. Not only does the height change, but we are physically changing the angle and pulling the rail away from the injector block.. This physically changes the angle and pulls the rail away from the injector block. As the engine torques over you can quickly see the potential risks to a flexi - flier fuel rail install..
Don’t shoot the messenger. We all know that these engines require more fuel, and Tony has mentioned that. This is a bandaid solution. If you are going to do it right drop the engine, and remove the rails and weld them. It will save you a lot of grief in the end.
BTW, as soon as you add the injectors, the MAF will raise it’s ugly head.. I think that Markski can shed some light about that.. Check your MAF voltages..
Already >> Using a spacer whether it is nylon or aluminum to steel will cause injector
leaks or worse>> our engines don't have solid motor mount, but fluid dampers. If you do a heavy drag launch you will wrench you drivers side fuel line. The line hangs and lifts the drivers side fuel rail. This occurs because there isn't enough support on the rail..
If you just install blocks or spacers under the rail, the thin gauge metal does not have
any support. Look at the rails, there is side reinforcement on each side but when you extend the mounting point torwards the outside of the rail, you lose your support and increase the chance for metal fatique Yes, you are securing the rail down to the intake injector block, but there is no support to hold the injector (not enough down force) in the injector blocks.. The failure will vary from injector intake air leaks to fuel leaks.. Fuel and turbine housings usually don't have a nice ending.
Tuners like EVOM's will actually weld blocks and increase the thickness of the mounting base. Kaspar at Imagine Auto actually will cut and re-weld the factory extensions. Proto makes a block with screws to extend the rail. I cut off the factory base and reweld a lower mounting base that is the proper thickness. Again the problem is that most aftermarket injectors are longer. Not only does the height change, but we are physically changing the angle and pulling the rail away from the injector block.. This physically changes the angle and pulls the rail away from the injector block. As the engine torques over you can quickly see the potential risks to a flexi - flier fuel rail install..
Don’t shoot the messenger. We all know that these engines require more fuel, and Tony has mentioned that. This is a bandaid solution. If you are going to do it right drop the engine, and remove the rails and weld them. It will save you a lot of grief in the end.
BTW, as soon as you add the injectors, the MAF will raise it’s ugly head.. I think that Markski can shed some light about that.. Check your MAF voltages..
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Yes thats our housing. I have 85mm and 90mm currently. We are working on a few new ones with a slightly different design for different applications.
The one pictured is for a hitachi maf. The mounting place is easily changed for basically any maf sensor we want to use.
Also, not sure if you saw my other post....were you working with Buehn a while back on audi turbos?
The one pictured is for a hitachi maf. The mounting place is easily changed for basically any maf sensor we want to use.
Also, not sure if you saw my other post....were you working with Buehn a while back on audi turbos?
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Not sure anyone has. Were you doing all his turbo's or were you just doing some of his machining?
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