Air Box Replacement Guide
#31
Hahaha I bet he has a humidor in his glove box, remember a few weeks ago I think him & Arnaud put on there silk smoking jackets and lit up?
Thanks for the education Clive...at your expense! Wait, in your air box there are three big holes, then inside each big hole there is a considerably smaller pipe/hole. What is that for?
Thanks for the education Clive...at your expense! Wait, in your air box there are three big holes, then inside each big hole there is a considerably smaller pipe/hole. What is that for?
#33
Thread Starter
Team Owner
Joined: Aug 2005
Posts: 27,275
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From: Cambridge Ontario Canada
good Catch Brad.
What you see there is the diffuser, it was actually added later to prevent my issue some what . The CIS cars use a cold start injector, basicaly a7th fuel injector used to help start the car when cold. it sits at the back of the air box and sprays fuel in in the hope that the fuel gets drawn into the intake pipes. It actually works very well
I guess the thinking was the fuel could get left in the airbox resulting in an explotion. So the answer was to out the diffuser in. The cold start injector would now spray the fuel directly down the intake runners instead of leaving it in the airbox.
What you see there is the diffuser, it was actually added later to prevent my issue some what . The CIS cars use a cold start injector, basicaly a7th fuel injector used to help start the car when cold. it sits at the back of the air box and sprays fuel in in the hope that the fuel gets drawn into the intake pipes. It actually works very well
I guess the thinking was the fuel could get left in the airbox resulting in an explotion. So the answer was to out the diffuser in. The cold start injector would now spray the fuel directly down the intake runners instead of leaving it in the airbox.
#34
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Team Owner
Joined: Aug 2005
Posts: 27,275
Likes: 1,190
From: Cambridge Ontario Canada
oh you poseur Pongobaz...... hey see you guys Saturday if the weather is good. I am test running her again tonight. and picking up the gas analyzer soon from Mark ( red 930 ) . Then i will be done
#35
Way to go Ice! I got adventurous and put in an all new polybronze bushing suspension with new bilsteins and thought it was a lot of work..... I haven't touched any engine work - not sure I have the patience...... Glad to hear it's running well!
#37
Thread Starter
Team Owner
Joined: Aug 2005
Posts: 27,275
Likes: 1,190
From: Cambridge Ontario Canada
Well guys i just completed the last piece tonight . went to a friends house and he loaned me his AFR meter. We hooked it up and i was getting a AFR of 14.3. That equates to a co of about .4%
When i got home I hooked it back up and got the exact same reading , put in my 3mm allen key and only had to turn it about an eighth. The idle imeadiately jumped and smoothed out. it was not sounding bad , but just not a smooth as i was used to . I reved it a few times and rechecked and the Co was 13.5 consistently . I reved it , came back , stoped and started the engine it came back .. rock solid. Adjusted the idle back to 900. Still rock solid so i wrapped it up .
BTW AFR of 13.5 equates to Co of 2.6. I am allowed 1.5 - 3.5 so that is perfect. So the project is Done.
Thanks to everyone for their support .. ... heres to the rennlist team..
When i got home I hooked it back up and got the exact same reading , put in my 3mm allen key and only had to turn it about an eighth. The idle imeadiately jumped and smoothed out. it was not sounding bad , but just not a smooth as i was used to . I reved it a few times and rechecked and the Co was 13.5 consistently . I reved it , came back , stoped and started the engine it came back .. rock solid. Adjusted the idle back to 900. Still rock solid so i wrapped it up .
BTW AFR of 13.5 equates to Co of 2.6. I am allowed 1.5 - 3.5 so that is perfect. So the project is Done.
Thanks to everyone for their support .. ... heres to the rennlist team..
#39
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Team Owner
Joined: Aug 2005
Posts: 27,275
Likes: 1,190
From: Cambridge Ontario Canada
well you can actually tighten them before hand Jay. 2 you can get to after so it doessn't matter. Also there is a bit of loosen it get itin place, lift carefully , and tighten enm up . Works pretty good.
I replaced the box in March and it still runs like a champ.
The AFR meter worked great and I was able to really settle things in with a small adjustment
I replaced the box in March and it still runs like a champ.
The AFR meter worked great and I was able to really settle things in with a small adjustment
#40
I am a newbie here...I need to replace my air box on my 1982 911 SC Targa 3.0L. I am beginning the process of deciding if I have what it takes to tackle this.
It sounds theiceman has a zillion photos of this project everyone of which I treasure in my quest to bring my baby back...
If they are available could someone please direct me?
Thanks
It sounds theiceman has a zillion photos of this project everyone of which I treasure in my quest to bring my baby back...
If they are available could someone please direct me?
Thanks
#41
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Team Owner
Joined: Aug 2005
Posts: 27,275
Likes: 1,190
From: Cambridge Ontario Canada
Problem is Lutz Rennlist changed their policy a few years ago and downgraded many members, with the downgrade, they deleted users pics, so essentially they cut their own throat.
i have no idea what pics they were now, that was over 10 years ago.
i have no idea what pics they were now, that was over 10 years ago.