What is this and what is it's purpose.
03-30-2004, 04:10 PM
#1
Drifting
Thread Starter
What is this and what is it's purpose.
Inside the Airflow meter under the carbon track and arm, there is a numbered vernier wheel, with a couple of leaf springs keeping things in place, all shown on p138 of Adrians book.
So I'm thinking as I'm cleaning the carbon track etc, what on earth is this, and what does it do?
TIA
Kevin.
Oh, and cleaning the carbon track, the ISV and injectors has made the car a lot smoother in both idle and pickup, next step dizzy caps and rotor arms......and belt.......
So I'm thinking as I'm cleaning the carbon track etc, what on earth is this, and what does it do?
TIA
Kevin.
Oh, and cleaning the carbon track, the ISV and injectors has made the car a lot smoother in both idle and pickup, next step dizzy caps and rotor arms......and belt.......
03-30-2004, 04:28 PM
#3
Drifting
Thread Starter
Hi Dave,
It was held on by a clear silicon sealant type material.
I took a modelling knife and released the sealant all the way round, then took a sharp chisel and slid it underneath the lip and gently prised it up all the way round, it takes some effort, but do it gently it will lift in the end.
I glued my back on with a clear silicon sealant.
Kevin
It was held on by a clear silicon sealant type material.
I took a modelling knife and released the sealant all the way round, then took a sharp chisel and slid it underneath the lip and gently prised it up all the way round, it takes some effort, but do it gently it will lift in the end.
I glued my back on with a clear silicon sealant.
Kevin
03-30-2004, 07:47 PM
#4
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Sounds like s good thing to do. How difficult was it to clean and is there anything in there you want to be careful with so as not to knock something out of adjustment.
03-31-2004, 02:41 AM
#5
Drifting
Thread Starter
stuff
Hi Doug,
Easy to do, there's not much inside the housing, except what can be seen in Adrians book, I'd be careful of the arm that traverses the carbon track, it looks pretty delicate, and I cleaned that using a piece of cloth dampened with IPA (isopropanol) cleaner and gently swung the barn door to get the arm to run over the cloth. Do it lightly and make sure the cloth is thin, other than that I didn't do anything else excepting make sure everything looked ok and tight.
Easy to do, there's not much inside the housing, except what can be seen in Adrians book, I'd be careful of the arm that traverses the carbon track, it looks pretty delicate, and I cleaned that using a piece of cloth dampened with IPA (isopropanol) cleaner and gently swung the barn door to get the arm to run over the cloth. Do it lightly and make sure the cloth is thin, other than that I didn't do anything else excepting make sure everything looked ok and tight.
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04-14-2004, 10:29 AM
#11
Addict
Rennlist Member
Rennlist Member
the wheel is connected to the air vane. The theory of the air vane is to measure the air input so as to change the fuel injector pulse widths. The spring dampens the air flow so as not to be too influenced by the intake and exhaust valve pulses.
I have played around with the positon of the wheel on other cars that I've owned, specifically Toyotas. If you decrease the spring tension, your fuel system will run richer and you will actually get slower rpm drops between shifts. I did this when autocrossing and bettered my run times. Driveability is a lille better. I also have the tension decreased on my Toyota truck to compensate for a extra heavy aftermarket flywheel.
If you're tempted to play around with the wheel, be sure to mark the original position. I'm guessing that emissions tested could be affected since you are changing the injector pulse widths at differerent rpms.
I have played around with the positon of the wheel on other cars that I've owned, specifically Toyotas. If you decrease the spring tension, your fuel system will run richer and you will actually get slower rpm drops between shifts. I did this when autocrossing and bettered my run times. Driveability is a lille better. I also have the tension decreased on my Toyota truck to compensate for a extra heavy aftermarket flywheel.
If you're tempted to play around with the wheel, be sure to mark the original position. I'm guessing that emissions tested could be affected since you are changing the injector pulse widths at differerent rpms.