header air not hot

J

jerry shook

Well-known member
I just installed a header out of an old car in my (A) it is a good one also used the kit from Mikes short pipe with hose and temp connection , and long bottom pipe with header connection. also put in a thermostat 160 temp ,the air is warm but not hot enough to heat the car. can i put a 180 or 190 thermostat in . any ideas . the opening coming from the top hose is about the size of a pencil may not be enough water? what do you think.
 
You did not say where your thermostat is located- before the upper hose T to the heater or after, between the T connection and the radiator. If the thermostat is between the head and the T connection you are getting very little circulation through the heater core, none when the thermostat is closed. Place the thermostat in the upper part of the hose between the T and the radiator. You will have constant circulation, even when the thermostat is closed. Yes, you should be fine going to a 180 'stat.
 
The flow will be limited by the smallest hole --pencil size is small, you want as close to 1/2 as you can.
The core of your used heater needs to be clean, many old heaters were removed because of restrictions ---you can check the flow with a garden hose, just be carefull to not clamp the hose to nozzle, just hold it together to prevent too much pressure.

Another possibility is that it is airbound --a low spot in the hoses with the heater high can cause this ---almost removing the uppermost hose at the heater and burping it can cure airbound.

The hotter the coolant the better the heater performance---

Check what MikeK says about t-stat location , the heater connection needs to be at the engine side of t-stat ( the t-stat blocking colant flow forces coolant through the heater)
 
I used a old header i was going to sale ,i don,t remember what i took it out of . i did put a 180 thermostat in went to the local parts store and spot welded a band on it . lowered my hoses to keep air pockets out and it heats better.Thanks ever one
 
Jerry Shook ......................
Do you have the hot water coming in at the BOTTOM of the heater ? That way, the heater will always be filled with the hottest water and no air. You don't want gravity to empty your core, too quickly.
MIKE :)
 
You must log in or register to reply here.
Back
Top