C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

surge coolant tank replacement

Thread Tools
 
Search this Thread
 
Old Mar 9, 2010 | 09:36 AM
  #1  
joesgulfstream's Avatar
joesgulfstream
Thread Starter
Drifting
 
Joined: Nov 2009
Posts: 1,884
Likes: 0
Default surge coolant tank replacement

Going to replace my coolant surge tank on my 95 LT1. Do I have to drain the intire system down as per manual or is there somethig else I can do to make it easy ?
Reply
Old Mar 9, 2010 | 09:46 AM
  #2  
Aardwolf's Avatar
Aardwolf
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2004
Posts: 13,961
Likes: 707
From: WI
Default

Easy? What I do is use my shop vac to bring the coolant level down to just the right level so I don't drain it all. Suck up a little dust on the floor when your done and leave the vac tube tipped up so there isn't a small dribble out of it.
Reply
Old Mar 9, 2010 | 10:11 AM
  #3  
joesgulfstream's Avatar
joesgulfstream
Thread Starter
Drifting
 
Joined: Nov 2009
Posts: 1,884
Likes: 0
Default

Originally Posted by Aardwolf
Easy? What I do is use my shop vac to bring the coolant level down to just the right level so I don't drain it all. Suck up a little dust on the floor when your done and leave the vac tube tipped up so there isn't a small dribble out of it.
I mean easier. Not to sound too dumb do you mean suck till the tank is empty or more ?
Reply
Old Mar 9, 2010 | 10:32 AM
  #4  
Aardwolf's Avatar
Aardwolf
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2004
Posts: 13,961
Likes: 707
From: WI
Default

Since you're replacing the tank (what's wrong with it?) I would clamp the line so it doesn't leak and replace the tank. I don't have that style of tank though so I'm not sure how it's plumbed. I would think you could clamp the line, remove the tank, install the new tank and hook the line back up. That wouldn't require messing with the coolant at all. You could even dump the old coolant into the new tank.
Reply
Old Mar 9, 2010 | 11:18 AM
  #5  
c4cruiser's Avatar
c4cruiser
Team Owner
20 Year Member
Veteran: Army
 
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Default

Because the surge tank is above the rest of the cooling system, all you really need to do is to siphon out the coolant that is in the tank, remove it and install the new one and add coolant to the bottom of the filler neck. You may get some coolant dripping out of the hoses, but they can be clamped shut beforehand as mentioned.

With the new tank in place and filled, start the engine and let it idle. Watch the level of the coolant to see if it drops when the 'stat opens. If it does, add fresh coolant to the filler neck and replace the pressure cap.
Reply
Old Mar 9, 2010 | 01:38 PM
  #6  
joesgulfstream's Avatar
joesgulfstream
Thread Starter
Drifting
 
Joined: Nov 2009
Posts: 1,884
Likes: 0
Default

Originally Posted by c4cruiser
Because the surge tank is above the rest of the cooling system, all you really need to do is to siphon out the coolant that is in the tank, remove it and install the new one and add coolant to the bottom of the filler neck. You may get some coolant dripping out of the hoses, but they can be clamped shut beforehand as mentioned.

With the new tank in place and filled, start the engine and let it idle. Watch the level of the coolant to see if it drops when the 'stat opens. If it does, add fresh coolant to the filler neck and replace the pressure cap.
Thank you. Will I have to open the blead value to let any air out ?
The coolent recovery hose fitting right under the cap is loose and leaking. I tried epoxy and that weld product did not hold. Got one online from a 94 for $17/$8 for shipping. So I will try that one and see what's wronge with it!
Reply
Old Mar 9, 2010 | 02:08 PM
  #7  
c4cruiser's Avatar
c4cruiser
Team Owner
20 Year Member
Veteran: Army
 
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Default

You should not have to open the bleed valve. The valve is there to remove air pockets that are in the block, heads or radiator as the system is filled after a full drain of the cooling system.

Once the new tank is installed and you have replaced the pressure cap, check the level of coolant in the overflow tank. Make sure the level is at least at the Cold mark.
Reply
Old Mar 9, 2010 | 06:06 PM
  #8  
joesgulfstream's Avatar
joesgulfstream
Thread Starter
Drifting
 
Joined: Nov 2009
Posts: 1,884
Likes: 0
Default

Originally Posted by c4cruiser
You should not have to open the bleed valve. The valve is there to remove air pockets that are in the block, heads or radiator as the system is filled after a full drain of the cooling system.

Once the new tank is installed and you have replaced the pressure cap, check the level of coolant in the overflow tank. Make sure the level is at least at the Cold mark.
Thank You for all of your help.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Mar 9, 2010 | 11:58 PM
  #9  
pjinca's Avatar
pjinca
Intermediate
 
Joined: Jun 2007
Posts: 46
Likes: 0
From: Roseville CA
Default

I just replaced mine on my 94. I had the same problem with the neck started to leak and no amount of JB Weld was going to hold that pressure.

I sucked out the coolant with a good ol' dollar tree turkey baster (high tech baby). Disconnected the hoses and installed the new one in about 45 minutes.

After filling, I did bleed the system just to be sure no air got in there, since some fluid leaked out due to the leaky neck. Like c4cruiser stated, also check the coolant tank.
Reply
Old Mar 10, 2010 | 12:51 AM
  #10  
86PACER's Avatar
86PACER
Le Mans Master
20 Year Member
 
Joined: Jan 2003
Posts: 5,858
Likes: 7
From: Santa Maria CA
Default

I used to use turkey baster to siphon fluids. Total piece of crap compared to one of these transfer pumps. I tossed my turkey baster in the trash where it belongs.

$5 at Habor Freight or Wal-Mart.

Also useful for removing transmission fluid through the dipstick prior to pan/filter replacement. It eliminates the mess of dropping the pan full of fluid. Many uses.


Reply

Get notified of new replies

To surge coolant tank replacement





All times are GMT -4. The time now is 12:55 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE