Coolant Flush ???
Thread Starter
Racer
Joined: Jul 2007
Posts: 373
Likes: 1
From: Ontario
Coolant Flush ???
Looking for any help or pointers on How To Completely drain/flush ALL off my antifreeze out of my rad system and engine block 
I have three weekends of racing coming up and don't want to get caught 
with even a small amount of the block antifreeze left over. Thanks guys 
I have three weekends of racing coming up and don't want to get caught with even a small amount of the block antifreeze left over. Thanks guys
Race Director
Joined: Oct 2001
Posts: 19,653
Likes: 428
From: Melbourne Florida
Cruise-In IV Veteran
FWIW, I take all my cars to a local radiator service company...they have a system that pushes clear water via 100lbs. of compressed air through the cooling system and block.... when it runs clear you are done...flushes everything including the block....then they refill with whatever you want....
Cost me $79.00 last year...well worth it in my opinion...
Cost me $79.00 last year...well worth it in my opinion...
Team Owner
Joined: Feb 2000
Posts: 32,545
Likes: 2
From: Lithia FL
Cruise-In II & IV Veteran
CI VI Drag Champ!
Here is a novice question, would it make sense for a do it yourself to do it several times to get it all out? Maybe three or five cycles of getting the engine warm? Is that a silly idea?
Drifting
Joined: Jan 2006
Posts: 1,457
Likes: 22
I think that would work but what are you doing with all that old dirty coolant? Trans flushes are same. It's easier to have a shop do the work and dispose of the old materials.
Thread Starter
Racer
Joined: Jul 2007
Posts: 373
Likes: 1
From: Ontario
Tough spots...
From what I can tell so far is it's the trapped fluid behind the water pump that gives you the most trouble. I remember Preston used to have a in-line water hose hook up to assist in a flush. When I get some time I'm going to try to look into something along that idea that I can get a clean flush... Don't know for sure yet. Edgar I have tried your suggestion and it works but you still just keep diluting it each time you flush. Thanks guys
Instructor
Joined: Sep 2009
Posts: 201
Likes: 0
From: Rancho cordva Ca
Hi, I'm a novice so this is probably a dumb question, but why are you trying to get all the coolant out to go racing? Does that give more power?
AMP Racing
Joined: Aug 2006
Posts: 10,753
Likes: 587
From: Washington TWP NJ
2023 C5 of the Year Finalist - Modified
2017 C5 of Year Finalist
St. Jude Donor '09-'10-'11-'12
You cant (aren't supposed to) run coolant on the track, as it is a real pain to clean up if you blow a line. Antifreeze is really slippery stuff.
Thread Starter
Racer
Joined: Jul 2007
Posts: 373
Likes: 1
From: Ontario
New Trick...
After watching one of those change over coolant machines Make a mess of my front belt area, I thought of a way to blow out the block coolant by using a hose and valve setup at the inside hose connection by the thermostat that will allow you to slow purge out the coolant with the proper setup , WITH no soaking of the belts and air cond. unit. Took some time to set up but I think it will work great for next season change over.... Anything controlled is better than soaking down the whole right side of the engine bay... Take Care Dan 
PS ...
Watch some of the Pinks episodes when antifreeze gets on the track... and watch Rich Boil Over 
Make a mess of my front belt area, I thought of a way to blow out the block coolant by using a hose and valve setup at the inside hose connection by the thermostat that will allow you to slow purge out the coolant with the proper setup , WITH no soaking of the belts and air cond. unit. Took some time to set up but I think it will work great for next season change over.... Anything controlled is better than soaking down the whole right side of the engine bay... Take Care Dan PS ...
Watch some of the Pinks episodes when antifreeze gets on the track... and watch Rich Boil Over
Last edited by danielf; Nov 2, 2009 at 08:08 PM.
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Instructor
Joined: Sep 2009
Posts: 201
Likes: 0
From: Rancho cordva Ca
