r55nls2002
Member
I am ASSUMING it provides the vacuum or controls the cabin climate switch on the dash. If so, where do I run the missing vacuum lines too?
Thanks, Randy-
Thanks, Randy-
What is this?
- Thread starter r55nls2002
- Start date
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r55nls2002
Member
Eureka!!! I have figured it out!! It is the boost control on my non-existant factory twin turbo setup
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I don't remember what it is, but a 73 Scamp I used to own had the same thing in the same location. Sorry I can be of more help.
Osac valve ....you don't need it because it is part of the spark control system.
the fact that its mounted on your firewall tells me your car is a 73 because in 74 that part was re-located and mounted on the air cleaner.
if you take it off like many people do, don't toss it. Some of us actually collect original emissions parts.
the fact that its mounted on your firewall tells me your car is a 73 because in 74 that part was re-located and mounted on the air cleaner.
if you take it off like many people do, don't toss it. Some of us actually collect original emissions parts.
ArizonaKid
Well-Known Member
It looks like an OSAC valve, but why is it on the firewall? They're usually on the air cleaner.
An orifice spark advance control (OSAC) valve is used on all models to delay distributor vacuum advance for about 15-27 seconds during acceleration.
Eureka!!! I have figured it out!! It is the boost control on my non-existant factory twin turbo setup .
And here I thought that was a kanoodle valve, silly me.
r55nls2002
Member
Thank you for your help. I was really off with my first assumption.
Randy-
Randy-
lol
TylerW
Well-Known Member
In '73 the OSAC valve was in the firewall. In '74 it moved to the aircleaner.
In '73 the OSAC valve was in the firewall. In '74 it moved to the aircleaner.
In '73 the OSAC valve was in the firewall. In '74 it moved to the aircleaner.
In '73 the OSAC valve was in the firewall. In '74 it moved to the aircleaner.
In '74 and later the OSAC was on the air cleaner, but in '73...you guessed it...in the firewall.
In '73 the OSAC valve was in the firewall. In '74 it moved to the aircleaner.
In '73 the OSAC valve was in the firewall. In '74 it moved to the aircleaner.
In '73 the OSAC valve was in the firewall. In '74 it moved to the aircleaner.
In '74 and later the OSAC was on the air cleaner, but in '73...you guessed it...in the firewall.
73 Swinger 8
Well-Known Member
So where was the OSAC in 73?
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