7point62fmj Posted December 23, 2010 Share Posted December 23, 2010 I wanted to know if any one had a good write up with pictures on swaping out and cleaning the heater core on a brat. I have a few write ups on file but nothing with pics. Here is the old post but the pics dont show up for me http://www.ultimatesubaru.org/forum/showthread.php?t=49964 Quote Link to comment Share on other sites More sharing options...
7point62fmj Posted December 23, 2010 Author Share Posted December 23, 2010 http://www.ultimatesubaru.org/forum/showthread.php?t=73517&highlight=Heater+Core I think I am going to try this first and yes I know there are issue with making the heater core leak. Quote Link to comment Share on other sites More sharing options...
mcbrat Posted December 24, 2010 Share Posted December 24, 2010 This is how I've done all my ea81s... http://www.indysworld.com/80s/general/USRM/mick-usrm/heatercore/heatercore.html mostly because I never felt like ripping the entire dash out.... just ignore the login prompt if you get one... Quote Link to comment Share on other sites More sharing options...
Crazyeights Posted December 24, 2010 Share Posted December 24, 2010 Brilliant shortcut! I have done the last couple the hard way:rolleyes: Quote Link to comment Share on other sites More sharing options...
NV Zeno Posted December 24, 2010 Share Posted December 24, 2010 Yeah, I used McBrat's shortcut on my '83. Worked great! Higly recommended. Quote Link to comment Share on other sites More sharing options...
mdjdc Posted December 24, 2010 Share Posted December 24, 2010 Something I have done tha has worked very well is to take some powdered dishwasher detergent and dissolve it in vey hot water. Take both heater hoses off the core and get as much of the coolant out of the core as possible. Point the heater hoses up and fill the core sithe the very hot detergent solution. Let it sit over night and then flush the core out in the morning. The detergent is a chemical flush that works very well to dissolve any deposits that may be clogging the core. You may have to to this twice, but when I did it I went from absolutely no heat to screamin hot in tow treatments. It is worth a try. Mike Quote Link to comment Share on other sites More sharing options...
idosubaru Posted December 24, 2010 Share Posted December 24, 2010 If it's just not blowing heat - I've always just removed both hoses to the heater core and put a garden hose right up to one side to blow it out, bunch of brownish nastiness comes out and the heat works after that. Cool to see the few options there are rather than the traditional yank the dash. Quote Link to comment Share on other sites More sharing options...
7point62fmj Posted December 25, 2010 Author Share Posted December 25, 2010 I am going to try this the I will run with mics thing (post #8) more cold weather friendly. Now I got to get some descaler I like. http://www.ultimatesubaru.org/forum/showthread.php?t=66721&highlight=Heater+Core Quote Link to comment Share on other sites More sharing options...
bheinen74 Posted December 25, 2010 Share Posted December 25, 2010 (edited) good luck nothing easy on this. use micks shortcut is wise. parts car backup will be nice if needed. i ran a prestone brand heater core deep cleaner (they had 2 versions, a quick clean and a deep clean) thru mine and ran it in the car for a week lol longer than they posted to. I have had heat ever since. i did it before temps got to the + 35 mark at night.......cause you mix the chemical with water......dont want water in the block when its -15 temp good luck and report back k Edited December 25, 2010 by bheinen74 Quote Link to comment Share on other sites More sharing options...
mdjdc Posted December 26, 2010 Share Posted December 26, 2010 If it is very cold and you have to do the work outside, make a heavy solution of the detergent and let it sit until the solution gets cold. That should be about an hour and rinse it out. Do it again once or twice and you should have heat again. I wouldn't let it sit over night if it is balow freezing or you may damage the core. Quote Link to comment Share on other sites More sharing options...
7point62fmj Posted December 26, 2010 Author Share Posted December 26, 2010 I am going to try to set up a pump in a tray and run it for a few hours onced hooked up. Quote Link to comment Share on other sites More sharing options...
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