When the engine is off, the heat riser valve is closed (unless it is stuck open). When you rev the engine, the force of the exhaust opens the valve. Shut the car off, and it closes again, hot or cold. Heat decreases the amount of resistance in the spring. Unless the counter weight has slipped, or someone has fooled around with it, the valve is closed when the longer flat portion of the counter weight is facing you, looking down on it. If the valve is working, watch it in action when you rev the engine.
Also, if its working, why not allow it to work and leave it alone, except to lubricate it once in a while.
Paul W. -----Original Message----- From: therichardsonfamily@xxxxxxxxxxx To: mailing-list@xxxxxxxxxxxxxxxx Sent: Sat, 25 Aug 2007 5:55 am Subject: Re: IML: Heat riser rotation? Now I am confused (again!).Didn't the general concensus think that (looking at it from the passenger side fender) the heat riser opens when turned clockwise (in the "down" position) -
and closes when turned counter-clockwise (in the "up" position?I hate to open this back up again but, I want to wire it open correctly. My engine is a '67 440 from an Imperial (which I don't thinks makes a difference).
Dan Richardson 300L Family Heirloom -------------- Original message ---------------------- From: Kinkodw@xxxxxxx
Fred,Thanks for the quick reply. I have the counterweight rotated all the
way
clockwise against the stop looking at it from the top. I guess this
means the
valve is then closed and directing exhaust thru the intake manifold.
Luckily I
just did this "correction" as some of the letters stated that thecounterweight needs be rotated clockwise toward the front of the
vehicle.
Luckily I'veonly had it out once since rotating it, maybe 40 miles worth. I'll
rotate it
towards the rear of the vehicle in the morning. hopefully this will
lock the
valve open bypassing the intake manifold. Thanks.By the way, do your sequential turn signals function correctly? I'm
having a
bear of a time with mine.Only two of the three taillights sequence on
either
side when activated and the emergency flashers just stopped working..
Thanks
again, Dwain '69 Lebaron..************************************** Get a sneak peek of the
all-new AOL at
http://discover.aol.com/memed/aolcom30tour
Attached Message From: Kinkodw@xxxxxxx To: mailing-list@xxxxxxxxxxxxxxxx Subject: Re: IML: Heat riser rotation? Date: Sat, 25 Aug 2007 02:49:52 +0000 Fred,Thanks for the quick reply. I have the counterweight rotated all the way clockwise against the stop looking at it from the top. I guess this means the valve is then closed and directing exhaust thru the intake manifold. Luckily I just did this "correction" as some of the letters stated that the counterweight needs be rotated clockwise toward the front of the vehicle. Luckily I've only had it out once since rotating it, maybe 40 miles worth. I'll rotate it towards the rear of the vehicle in the morning. hopefully this will lock the valve open bypassing the intake manifold. Thanks.
By the way, do your sequential turn signals function correctly? I'm having a bear of a time with mine.Only two of the three taillights sequence on either side when activated and the emergency flashers just stopped working.. Thanks again,
Dwain '69 Lebaron.. ------------------------------------------------------------ Get a sneak peek of the all-new AOL.com. ________________________________________________________________________Email and AIM finally together. You've gotta check out free AOL Mail! - http://mail.aol.com
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