Draining the Block. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


General GM Chat When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made. Chat about all things GM (and related cars). Off-topic stuff should be in the Lounge, and all Model specific mechanical problems should be posted in the proper forum.

Reply
 
 
 
Thread Tools Search this Thread
Old 01-29-2005, 02:08 AM   #1
Junior Member
Thread Starter
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default Draining the Block.

Is there some way to drain coolant completely from the block ?
2000SilverBullet is offline   Reply With Quote
Old 01-29-2005, 03:01 AM   #2
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

No drains on the Series 1. Whatcha up to?
willwren is offline   Reply With Quote
Old 01-29-2005, 12:41 PM   #3
Junior Member
Thread Starter
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default

Not up to anything.
It'* been 5 years now and I want to do a complete drain and flush.

Every year I drain the rad completely and refill with fresh coolant mix but that only replaces about 1 gallon or about 1/2 the total amount.

How do you do it Bill ?
2000SilverBullet is offline   Reply With Quote
Old 01-29-2005, 12:57 PM   #4
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

I use the overall capacity to calculate my mix for the fill, but I start by disconnecting at the lower radiator hose, stuffing a garden hose in that with a rag for a gasket, and then fire it up. Of course, you have to have the stat out to get flow, but hook up your upper hose again with the stat out. Last time I did this I was changing the stat anyway. After everything starts coming out clean, I allow the rad to drain back down before hooking up the lower hose again. That leaves enough empty capacity in the rad for the coolant.

If I had to do it again, though, I'd probably take it in and have it professionally done. It'* much cheaper than a trans flush.
willwren is offline   Reply With Quote
Old 01-29-2005, 01:19 PM   #5
Junior Member
Thread Starter
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default

Quote:
If I had to do it again, though, I'd probably take it in and have it professionally done. It'* much cheaper than a trans flush.

I don't like taking my cars in to have any work done on them unless absolutely necessary.
I still have nightmares about the one time I took my old International Scout in for a Trani oil change. When I picked it up, I noticed a brazed hole in the bottom of the oil pan. They had punched it with an awl to drain the fluid.

Come on Bill, that'* one of the reasons we have this forum, to do our own work, play and learn.
Changing fluids like coolant should be a basic job.

So if there isn't a block drain plug....like there is on my Firebird....I suppose that I'll go the same route of most "professional" shops, garden hose stuffed with a rag.
2000SilverBullet is offline   Reply With Quote
Old 01-29-2005, 01:28 PM   #6
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

It actually works really well. The first car I ever did this to was my 88 Camaro. I've been doing it ever since. The only pita is the stat, but if you're patient, you can just run it and wait for the stat to cycle it out as each 'fresh charge' of water gets up to temp. You and I have drilled stats now, so it might not take as long.

You just have to know the total capacity of the cooling system, and that of the radiator in order to get your mix right later. And don't forget to have your climate control in full heat, so you get the snot out of the heater core, too.
willwren is offline   Reply With Quote
Old 01-29-2005, 01:36 PM   #7
Junior Member
Thread Starter
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default

My cooling system capacity is 9.5 liters or 10 quarts, so a 50/50 mix would equate to 4.75 L or 5 quarts of Dex.
2000SilverBullet is offline   Reply With Quote
Old 01-31-2005, 11:23 PM   #8
Junior Member
Thread Starter
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default

If anyone is interested, I just found out from 3800Tech forum.

Quote:
The Knock sensors are the block drains. Pull those and all the coolant will come out of the block.
2000SilverBullet is offline   Reply With Quote
Old 01-31-2005, 11:37 PM   #9
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

That explains the difference. Series 1 only has one KS. So we can't drain from both sides.
willwren is offline   Reply With Quote
Old 02-01-2005, 12:52 AM   #10
Junior Member
Thread Starter
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default

It'* all well and good until you look and see how difficult it is to access those suckers to remove them.
2000SilverBullet is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
92 sc block shot ...can I use nsc block???? 92 SSE! mo Charger 1992-1999 17 04-20-2007 07:17 PM
Draining battery Niloc 1987-1991 3 04-03-2005 02:05 PM
Blown speaker draining battery dathotbrotha Audio (and aftermarket electronics) 3 09-17-2004 12:53 AM
Draining coolant from block Icebound 1992-1999 5 05-02-2004 12:26 AM
Engine block drain plug and tee draining kit anthonyv62 General GM Chat 0 07-24-2003 06:14 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 10:03 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.