1978 911SC Newbie.
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1978 911SC Newbie.
Hi folks,
Newbie question here. I see a lot of motors with what looks like the hot air blower fan and tubing deleted, as well as, the secondary air injection deleted. Can you tell the background on this. My motor has everything intact.
Tony
Newbie question here. I see a lot of motors with what looks like the hot air blower fan and tubing deleted, as well as, the secondary air injection deleted. Can you tell the background on this. My motor has everything intact.
Tony
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Joined: Mar 2007
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From: Boston, MA
Yep. I hated mine - made a "thup thup thup" sound that could be heard over the engine. The plumbing from the pump goes to a check valve in the engine sheet metal, which connects to the steel piping that sends air to each exhaust port.
I think you'll need to remove the heat exchangers to get to the steel piping. You can then plug the holes with special plugs. http://www.pelicanparts.com/catalog/...FULEMI_pg2.htm
It's part of the emissions system, so if you want to remove it, make sure your state doesn't inspect for it.
On the blower, removing it is a "heat back date" - it wasn't used in the mid-1970's and earlier. All it does is provide extra forced air for the heater and defroster in the passenger compartment. Without it, you rely on the engine fan, which is typically plenty. The fan motors often seize; removing it cleans up the engine compartment. You need a couple of special adapter plates for the engine shroud. Do some searches and you should be able to find a complete list of parts.
Mark
I think you'll need to remove the heat exchangers to get to the steel piping. You can then plug the holes with special plugs. http://www.pelicanparts.com/catalog/...FULEMI_pg2.htm
It's part of the emissions system, so if you want to remove it, make sure your state doesn't inspect for it.
On the blower, removing it is a "heat back date" - it wasn't used in the mid-1970's and earlier. All it does is provide extra forced air for the heater and defroster in the passenger compartment. Without it, you rely on the engine fan, which is typically plenty. The fan motors often seize; removing it cleans up the engine compartment. You need a couple of special adapter plates for the engine shroud. Do some searches and you should be able to find a complete list of parts.
Mark
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Thank you. I'm in Canada and I think that I'm emissions exempt, but I'll check. It now makes sense why I've seen so many pics with an empty looking engine bay.
Last edited by Pro198; Jun 27, 2016 at 10:21 AM.
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Joined: Aug 2005
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From: Cambridge Ontario Canada
I am in Canada also and find the blower helpful on those October and November days. I am also a fan of an original look so left mine alone
As far as the air pump goes mine was gone when I bought the car. So I took off all the piping and inserted plugs. I was able to cut all the piping off then simply unscrew the air injectors and insert plugs leaving the exchangers in place
As far as the air pump goes mine was gone when I bought the car. So I took off all the piping and inserted plugs. I was able to cut all the piping off then simply unscrew the air injectors and insert plugs leaving the exchangers in place
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I was brought up with the same mindset. I'm definitely an original correct type of person. My money will be going towards general repair, upkeep first. I raced motorcycles and got over the bling thing for having a proper setup, reliability, and working machine as more important now. Plus I can see that a full proper engine rebuild, suspension upgrade etc will be costly so it doesn't make sense buying plugs etc.