EFE - Heat Riser Valve
Thread Starter
Racer
Joined: Apr 2002
Posts: 352
Likes: 11
From: Glendale AZ
EFE - Heat Riser Valve
On a 1980, does anyone know if is there a vacum line I can block or reverse, or some other method, to make the heat riser valve wide open all the time?
The baffle plate in the valve is rattling. From the actuator near the valve the rod comes up to a vacum line that goes to the TVS. I can pinch that line with a pair of pliers and the noise stops but I do not know if the baffle is in the open or closed position.
I am trying to avoid doing a R&R on the EFE itself.
Thanks
[Modified by pdgourno, 7:53 AM 6/3/2002]
The baffle plate in the valve is rattling. From the actuator near the valve the rod comes up to a vacum line that goes to the TVS. I can pinch that line with a pair of pliers and the noise stops but I do not know if the baffle is in the open or closed position.
I am trying to avoid doing a R&R on the EFE itself.
Thanks
[Modified by pdgourno, 7:53 AM 6/3/2002]
Burning Brakes
Joined: Dec 2000
Posts: 1,183
Likes: 2
From: Des Moines Iowa
Re: EFE - Heat Riser Valve (pdgourno)
If memory serves me correctly, believe the valve is closed with vacuum applied.
That is, the engine should have vacuum in this line when engine is cold, but no vacuum when engine is fully up to operating temperature. If I'm remembering correctly, then all you have to do, is remove the hose from the valve, cap off the valve fitting and plug / remove the vacuum hose.
That is, the engine should have vacuum in this line when engine is cold, but no vacuum when engine is fully up to operating temperature. If I'm remembering correctly, then all you have to do, is remove the hose from the valve, cap off the valve fitting and plug / remove the vacuum hose.
Race Director
Joined: Aug 1999
Posts: 11,121
Likes: 672
From: SE Pennsylvania
St. Jude Donor '03 thru '26
Oldtimer
Re: EFE - Heat Riser Valve (pdgourno)
If you disconnect the line, plug it with a bolt or plug the valve will stay in to open position. It only closes for a short period when vacume is attached to it.
Le Mans Master
Joined: Feb 1999
Posts: 8,351
Likes: 75
From: Tampa Bay FL
Re: EFE - Heat Riser Valve (pdgourno)
Just disconnect/plug the hose that runs down to the heat-riser. I removed mine entirely when I switched to headers. When disconnected, EFE valve is in 'open' position. Under WOT (and connected) or once engine warms up, it is also supposed to be open (when operating properly).
Drifting
Joined: Feb 2002
Posts: 1,987
Likes: 3
From: Manchester, Dead Center in the Middle of TN 25 miles to Jack Daniels,10 miles to Geo Dickle, and .8 mile from the Liquor Store at I-24 Exit 114
St. Jude Donor '05
Re: EFE - Heat Riser Valve (pdgourno)
If you need one I have an extra for $15 shipped. JIM
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Thread Starter
Racer
Joined: Apr 2002
Posts: 352
Likes: 11
From: Glendale AZ
Re: EFE - Heat Riser Valve (PROSOUTH)
I will have to pass on your offer as the one I ordered has already shipped. Blocked off the vacum line and all is quiet again. I really think they over engineered a method to get the engine warm faster.
Thanks to all for your help.
Is Manchester anywhere near Gatlinburg? G'burg is where I spent the first 12 years of my life.
David
Thanks to all for your help.
Is Manchester anywhere near Gatlinburg? G'burg is where I spent the first 12 years of my life.
David
