Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions

Reply
 
LinkBack Thread Tools Display Modes
Old 10-01-2019, 09:27 AM   #1
Registered User
 
Join Date: Aug 2017
Location: Los Osos, CA
Posts: 29
Drain all the coolant again?!

My 2001 Boxster S had its engine replaced with a used engine from eBay 10,200 miles ago (17 months) at which time the coolant was entirely drained and replaced.

However, I'm hearing the water pump beginning to fail and every thing I read about it says that all the coolant must be drained when the water pump is replaced. I'm wondering, though, in this case, if it would be okay to not do that since the miles and time on the coolant is relatively low.

What are your thoughts?

cc986 is offline   Reply With Quote
Old 10-01-2019, 09:37 AM   #2
1202021
 
piper6909's Avatar
 
Join Date: Jan 2019
Location: PA
Posts: 894
Quote:
Originally Posted by cc986 View Post
My 2001 Boxster S had its engine replaced with a used engine from eBay 10,200 miles ago (17 months) at which time the coolant was entirely drained and replaced.

However, I'm hearing the water pump beginning to fail and every thing I read about it says that all the coolant must be drained when the water pump is replaced. I'm wondering, though, in this case, if it would be okay to not do that since the miles and time on the coolant is relatively low.

What are your thoughts?
I believe you're safe not to flush the coolant if the vanes of the old WP are intact. I don't see any other reason why you would need to, given that the existing coolant is so new.
piper6909 is online now   Reply With Quote
Old 10-01-2019, 09:37 AM   #3
Registered User
 
Join Date: Dec 2016
Location: Clifton, NJ
Posts: 844
to get the pump out, just about all the coolant will drain anyway. You may be able to keep about 2 gallons out of 6 in the car, especially with the ass end up.
Quadcammer is offline   Reply With Quote
Old 10-01-2019, 10:24 AM   #4
Porsche "Purist"
 
Paul's Avatar
 
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,083
Garage
Just drain it into a clean bucket and reuse.
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster bought new. Installed used motor at 89k.
1987 924S. 2002 996TT. PST2
Owned and repaired Porsches since 1974. Have driven them all the way the Dr intended...
Paul is online now   Reply With Quote
Old 10-01-2019, 12:19 PM   #5
Registered User
 
Join Date: Aug 2017
Location: Los Osos, CA
Posts: 29
Thanks, piper6909, that makes sense -- we don't want any plastic bits floating around in the pipes. I'm hoping my WP is not that far gone... I've only been hearing the 'diesel' sound (described on another thread here) and when I remove tension on the serpentine belt, I can easily make the WP pulley wobble. No obvious leaks and no issues with cooling.
cc986 is offline   Reply With Quote
Old 10-01-2019, 12:21 PM   #6
Registered User
 
Join Date: Aug 2017
Location: Los Osos, CA
Posts: 29
Thanks, Quadcammer -- I figured that might happen, which is ok if I don't need to drain everything, especially the radiators.
cc986 is offline   Reply With Quote
Old 10-01-2019, 12:22 PM   #7
Registered User
 
Join Date: Aug 2017
Location: Los Osos, CA
Posts: 29
Thanks, Paul. I'll consider this if I can find a clean enough bucket and I don't introduce any crud from the outside of the hoses, etc.
cc986 is offline   Reply With Quote
Old 10-01-2019, 02:14 PM   #8
Registered User
 
Join Date: May 2017
Posts: 55
Put a trash bag in the bucket, drain into the bag. Now you dont have to clean the bucket or worry. I keep a box of white trash bags in the garage for this reason, several jugs of empty coolant and a funnel just for coolant. Take your time filling the jugs and you shouldn't lose a drop.
__________________
2000 Boxster Tiptronic
Stl-986 is offline   Reply With Quote
Old 10-01-2019, 10:03 PM   #9
Registered User
 
Join Date: Feb 2017
Location: CO
Posts: 969
Yeah, I just lifted mine up high enough to get a 5 gal coolant container under mine and reused the coolant, it had just been flushed and redone a few hundred miles prior (of course). My impeller was fine, so no big deal.
Geof3 is offline   Reply With Quote
Old 10-02-2019, 10:19 AM   #10
Registered User
 
Join Date: May 2017
Location: Gilbert, Arizona
Posts: 22
I would try and save what you can and reuse it with the new water pump.

Brian
Brian Minson is offline   Reply With Quote
Old 10-03-2019, 08:49 AM   #11
Registered User
 
Join Date: Aug 2017
Location: Los Osos, CA
Posts: 29
Thank you all for your input, my stress levels are definitely coming down.
cc986 is offline   Reply With Quote
Old 10-03-2019, 08:57 AM   #12
Registered User
 
Join Date: Aug 2017
Location: Los Osos, CA
Posts: 29
What kind of coolant should I use to top it off?

I guess the last question on this is, if I have to top it off, what kind of coolant should I use? The work order for the engine replacement listed "2 gallons of Pink G40".

I found a nearby NAPA parts store that sells "Zerex G-40 Euro Pink Antifreeze", so I think I'll go with that for any needed top-off.

Last edited by cc986; 10-03-2019 at 02:48 PM. Reason: Found a local supplier of G-40
cc986 is offline   Reply With Quote
Old 10-03-2019, 05:18 PM   #13
Registered User
 
Join Date: May 2017
Posts: 55
what is in there now? If it's green, top with green, if pink, top with pink
__________________
2000 Boxster Tiptronic
Stl-986 is offline   Reply With Quote
Old 10-03-2019, 11:39 PM   #14
Registered User
 
Join Date: Feb 2017
Location: CO
Posts: 969
Quote:
Originally Posted by Stl-986 View Post
what is in there now? If it's green, top with green, if pink, top with pink
Itís not quite that easy. Your best bet, if you donít know what the coolant is, is to go ahead bite the bullet, fully drain, then flush and put the Porsche stuff in. Coolant is just a pain in the ass these days with all the colors, moat, boat, oat, whatever. If you mix the wrong kinds you can wind up with a real mess inside your engine. The Porsche stuff is ďpinkishĒ and Iím pretty sure it is a long life coolant. (Not) It comes undiluted in gallons and is only slightly more expensive than other quality coolants.
Geof3 is offline   Reply With Quote
Old 10-08-2019, 11:48 AM   #15
Registered User
 
Join Date: Aug 2017
Location: Los Osos, CA
Posts: 29
Thanks to all for the comments and suggestions... I've driven a couple of times to work and back with the new water pump and thermostat, and -- knock on wood -- things seem to be going alright.

I did end up just collecting and reusing the drained coolant. I did filter it through a cloth, even though there were only a few particles of debris (most likely from the loosening of the hose clamps). I was able to use my torque wrench on 5 of the 7 water pump bolts, and 1 of 4 thermostat bolts. The rest were tightened by feel. Does anyone else do this, or is there a super small version of a torque wrench that can fit into and around the water pump?

Overall, I lost about a pint of coolant, which I replaced with distilled water. The whole engine sounds remarkably better with the new pump.

Thanks again!
cc986 is offline   Reply With Quote
Old 10-08-2019, 01:11 PM   #16
1202021
 
piper6909's Avatar
 
Join Date: Jan 2019
Location: PA
Posts: 894
Quote:
Originally Posted by cc986 View Post
Thanks to all for the comments and suggestions... I've driven a couple of times to work and back with the new water pump and thermostat, and -- knock on wood -- things seem to be going alright.

I did end up just collecting and reusing the drained coolant. I did filter it through a cloth, even though there were only a few particles of debris (most likely from the loosening of the hose clamps). I was able to use my torque wrench on 5 of the 7 water pump bolts, and 1 of 4 thermostat bolts. The rest were tightened by feel. Does anyone else do this, or is there a super small version of a torque wrench that can fit into and around the water pump?

Overall, I lost about a pint of coolant, which I replaced with distilled water. The whole engine sounds remarkably better with the new pump.

Thanks again!
Awsome!
piper6909 is online now   Reply With Quote
Old 10-08-2019, 02:44 PM   #17
1998 Boxster Silver/Red
 
Join Date: Sep 2017
Location: 92262
Posts: 1,724
Quote:
Originally Posted by cc986 View Post
Thanks to all for the comments and suggestions... I've driven a couple of times to work and back with the new water pump and thermostat, and -- knock on wood -- things seem to be going alright.

I did end up just collecting and reusing the drained coolant. I did filter it through a cloth, even though there were only a few particles of debris (most likely from the loosening of the hose clamps). I was able to use my torque wrench on 5 of the 7 water pump bolts, and 1 of 4 thermostat bolts. The rest were tightened by feel. Does anyone else do this, or is there a super small version of a torque wrench that can fit into and around the water pump?

Overall, I lost about a pint of coolant, which I replaced with distilled water. The whole engine sounds remarkably better with the new pump.

Thanks again!
Tightening by feel, if you've a handle on it (figuratively speaking) should be fine. Keep an eye out for leaks for a few miles. I was in the same position, literally, and by feel tightened all my bolts. I didn't have confidence in the small torque wrench I had, and wasn't prepared to drop the quid for confidence.

You should be fine.
__________________
1998 Porsche Boxster
1986 BMW 325es
2012 Ford Edge Sport

"Ignore the guilt, and take your turn"
Starter986 is offline   Reply With Quote
Old 10-08-2019, 03:06 PM   #18
1202021
 
piper6909's Avatar
 
Join Date: Jan 2019
Location: PA
Posts: 894
Quote:
Originally Posted by Starter986 View Post
Tightening by feel, if you've a handle on it (figuratively speaking) should be fine. Keep an eye out for leaks for a few miles. I was in the same position, literally, and by feel tightened all my bolts. I didn't have confidence in the small torque wrench I had, and wasn't prepared to drop the quid for confidence.

You should be fine.
"Quid"? Are you a Brit bloke?

piper6909 is online now   Reply With Quote
Reply


Thread Tools
Display Modes

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 06:55 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page