adjusting rear heat?

HVAC, heating, cooling, air handling. Anything air temp related.
Post Reply

Topic author
Captn. Crunch
I sleep in my van
Posts: 557
Joined: Wed Feb 01, 2012 12:10 pm
Location: southeastern ct
Has thanked: 1 time
Been thanked: 1 time

adjusting rear heat?

Post by Captn. Crunch »

while I am actually here looking for an answer to an a/c problem (which I found-love stickies!) I was reminded of a heating issue. The heat ducts that are under the passenger seat and in the wall panel behind the drivers seat cook my kids feet. Adjusting the temp on the dashboard doesnt seem to have an effect. Do these bypass the mixxing valve that control dashboard discharge temps? Can they be tied in?

Thanks
Captn. Crunch
"I don't beat my rig-I use it to it's maximum potential"
1994 Safari conversion (sold) and miss'n it!
1999 Safari SLE AWD junked
2003 GMC Safari AWD SLT
cast iron Torsen equipped front diff
S-10 leafs-G80 rear w/3.73’s
2” body lift w/Falken Wildpeak AT’s
User avatar

chevymaher
I get chills without my van.
Posts: 97
Joined: Thu Jan 20, 2011 3:50 pm
Has thanked: 1 time

Re: adjusting rear heat?

Post by chevymaher »

Put lumpy's infamous ball valve set up before the heater core, in the water line. And adjust the amount of hot water it gets.
Image90 astro parts van gone.94 safari SLE.68 chevelle SS clone.
User avatar

doyoulikeithere
ASV Supporter
ASV Supporter
Posts: 2060
Joined: Tue Nov 17, 2009 8:27 pm
Location: Misty Mountains of Cowichan BC.

Re: adjusting rear heat?

Post by doyoulikeithere »

chevymaher wrote:Put lumpy's infamous ball valve set up before the heater core, in the water line. And adjust the amount of hot water it gets.
Never heard of it. ](*,)
Care to elaborate ?
2021 Yamaha Tenere 700 - Blue.
2016 Yamaha XSR900 - Silver.
1990 Astro - AWD - Brown.
1987 Astro - With 5 Speed & 4wd - Silver & Blue.

Astrophysics
I sleep in my van
Posts: 974
Joined: Sat Jan 12, 2008 9:23 pm
Been thanked: 9 times

Re: adjusting rear heat?

Post by Astrophysics »

Hi, there is a rubber heater hose under the van that runs from the engine compartment back to te rear seat floor heater. You can cut the rbber line mid way and install a metal brass ball valve that is available in plumbing department at home depot. Juat install brass barb fitting that fit inside the rbber heater hose. (Hose ID i think is 1/2"),
Or maybe could install the ball valve in the engine compartment near the T fitting that route radiator water to front heater and rear heater if you don't want to cut the oem hose.
The ball valve is more reliable than a gate valve.
The ball valve can be closed off a bit to reduce the flow of hot water going to the rear heater core.
AP
Post Reply