Removing diffusers with paperclips? YES!
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Removing diffusers with paperclips? YES!
Much thanks for whoever posted that you can remove injector diffusers with a paperclip. I was sweating on replacing mine until I popped the first one out in 30 seconds!
How? There are three small holes, equi-distant from each other, on the body of the diffuser that a paperclip with a 1/4" long, 90 degree bend on it's end can snag and pull out.
Feel free to pop in and say "hi" if you're the mystery person. ~rich
How? There are three small holes, equi-distant from each other, on the body of the diffuser that a paperclip with a 1/4" long, 90 degree bend on it's end can snag and pull out.
Feel free to pop in and say "hi" if you're the mystery person. ~rich
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I shoulda clarified - the primary diffusers; Secondaries are easy once you have the UIM off. I was too lazy to remove the LIM to pop them out from beneath.
I'm sure a pick would work too but didn't have one with me. ~rich
I'm sure a pick would work too but didn't have one with me. ~rich
#7
Haven't we ALL heard this
You got luckey....those things are so brittle when they are old.
I had to remove mine to clean my intake manifolds when I was cleaning them for the engine rebuild.
James
I had to remove mine to clean my intake manifolds when I was cleaning them for the engine rebuild.
James
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Originally Posted by 88t2romad
why were you removing these?
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Originally Posted by Sideways7
Why? I thought they were kinda needed.
I'm hoping that delaying injector opening time at low rpm's, reducing primary injector cycle, increasing rail pressure and bumping up idle rpm's a little that I'll be able to get rid of them.
In the meanwhile they're going back in. ~rich
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Originally Posted by n/a-luvr
They are needed, from what other people say, for better fuel atomization especially at idle. Poor atomization is prolly cause the intake runners are so long / and the rather large intake port area.
I'm hoping that delaying injector opening time at low rpm's, reducing primary injector cycle, increasing rail pressure and bumping up idle rpm's a little that I'll be able to get rid of them.
In the meanwhile they're going back in. ~rich
I'm hoping that delaying injector opening time at low rpm's, reducing primary injector cycle, increasing rail pressure and bumping up idle rpm's a little that I'll be able to get rid of them.
In the meanwhile they're going back in. ~rich
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you are correct carzy, the whole setup depends on a standalone. Which means it'll be summer before I have the extra money to buy what I need!
Sideways7: I'm guessing they help atomization for a smoother ride at lower engine speeds. At higher rpm's and faster intake velocity they become an obstacle to getting more air into the engine. Therefore - they gotta go. The higher rail pressure is to shoot the fuel harder out of the injectors improving atomization without intake restrictions.
~rich
Sideways7: I'm guessing they help atomization for a smoother ride at lower engine speeds. At higher rpm's and faster intake velocity they become an obstacle to getting more air into the engine. Therefore - they gotta go. The higher rail pressure is to shoot the fuel harder out of the injectors improving atomization without intake restrictions.
~rich
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I think you are going the wrong way again.
Even FD motors have them, and a FD motor will put out more power and suck more air in than any non turbo can be tuned to do.
The amount of drag that they induce is pretty small. Maybe if you were smoothing the entire length of the runners and removing the bolt re-enforcement; then you might be concerned with the minor amount of drag, but I wouldn’t.
Personally, I'd be more concerned with the drag from the re-enforcement bumps and cast runners then I would from something as small as the injector diffusers
Even FD motors have them, and a FD motor will put out more power and suck more air in than any non turbo can be tuned to do.
The amount of drag that they induce is pretty small. Maybe if you were smoothing the entire length of the runners and removing the bolt re-enforcement; then you might be concerned with the minor amount of drag, but I wouldn’t.
Personally, I'd be more concerned with the drag from the re-enforcement bumps and cast runners then I would from something as small as the injector diffusers
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Originally Posted by Ronin Rotary
Even FD motors have them, and a FD motor will put out more power and suck more air in than any non turbo can be tuned to do.
You are absolutely right about intake manifold short-comings. Also been examining the LIM and the angles into the secondary ports are unacceptable. However, I'm not aware of any aftermarket alternatives. Been thinking of making a custom manifold but am not committed to dumping that much money / time in the car yet. ~rich
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Originally Posted by n/a-luvr
You are absolutely right about intake manifold short-comings. Also been examining the LIM and the angles into the secondary ports are unacceptable. However, I'm not aware of any aftermarket alternatives. Been thinking of making a custom manifold but am not committed to dumping that much money / time in the car yet. ~rich
The Extrude Honed intake takes out all the re-enforcement bumps, matches the runners, and enlarges and polishes the runners to a nice satin finish.
On the injector diffusers: I would probably leave in and dyno. Then if you are convinced there are gains removing them, dyno again after they have been removed.
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