----- Original Message ----- From: <DMCVegas@xxxx> To: <dmcnews@xxxxxxxxxxxxxxx> Sent: Friday, May 18, 2001 4:08 PM Subject: [DML] Cooling System > The night before last I finally got around to installing all the new > upgrades for my car. One item was the Overheat Protector by DMC Joe @ > DeLorean Services. Installation was beyond simple, and took less then > 10 minutes. Tools needed were a couple of rachets, a screwdriver, and > some pruning shears. With a cold engine block, the coolant loss/mess > was very minimal. All I had to do then was top off the coolant > overflow bottle, and run the engine! The unit started working right > away. Normally without bleeding the system, the temp will rise > quicker then normal. But it took quite a bit longer this time. > > The DeLorean cooling system itself does a good job of cooling the > engine. There only problem with the system is air getting trapped > inside. If too much air becomes trapped in the top of the water pump > housing (the highest point in the system), it looses suction. Once > suction is gone, water stops pumping, and you know the rest. My > mechanic says that it can take quite a while to bleed all of the air > out of the system on the DeLorean. And from what I've seen, he's > right. > > Bleeding the system is not impossible or very difficult at all. But > it is a chore. When bleeding off the system, you are not just > bleeding air, but coolant as well. If you bleed too much at a time > out, the level in the surge tank will drop low enough that air will > be sucked back into the system. You also can't leave the pressure cap > off the tank because once the engine reaches it's specific temp, the > thermostat will open up. I tried bleeding the system back into the > overflow tank to avoid coolant loss. This resulted in coolant exiting > the overflow bottle with all the sutlety and heat of a small volcano. > I didn't get burned, but I did waste a quite a bit of fresh > antifreeze. So to bleed the system properly I've always bled off a > little coolant at a time into a bucket, wait 'till the engine cools, > refill over flow bottle, start over... > > That's where the self-bleeding kit comes in. Once installed, there > should be no problem with bleeding the system ever again. The system > works fine in as doing it's job. It just needs that extra step taken. > > But on a different subject, I have no idea as to why DMC never used > the same cooling system from the Alpine on the DeLorean. It looks > like the system can bleed itself. But with the Overheat Protector in > place, researching the changeover isn't even warranted... > > -Robert > vin 6585 > > > > Before posting messages or replies, see the posting policy rules at: > www.dmcnews.com/Admin/rules.html > > To address comments privately to the moderating team, please address: > moderator@xxxx > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > >