TB coolant bypass mod thoughts/questions - Saab Performance Bulletin Board - Saabnet.com
The banner above is an advertisment - if it asks you to download software, please ignore.
Site News - 4/9 Saab Owners' Convention Day Pass Raffle | 3/26 M Car Covers (by State of Nine)
[General | Members | C900 | 9000 | NG900 & OG93 | 93 | 95 | NG95 | 99 | Sonett | Vintage Models | Clubs | Other Cars | FAQs | Gifts | Member Photo Galleries | Member Directory | Classifieds | Manuals | *Buddy Registry | *Mileage Registry | Polls | What's New | Raffle | Photo of the Month | Sponsors]

Performance Bulletin Board
[Subscribe to Daily Digest]
(Search Author's Posts: e.g. Keyword:username)*Members Only

[Main Performance Bulletin Board | BBFAQ | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
TB coolant bypass mod thoughts/questions
Like This Post: - Subscribe to Daily Digest for this Bulletin Board
Posted by Taylor (more from Taylor) on Mon, 11 Aug 2003 14:48:14 Share Post by Email
Alert me when someone posts in this thread:
Members do not see ads below this line. - Help Keep This Site Online - Signup

Hello all,

A while back I went out to Home Depot to build a little on/off valve for the throttle body coolant bypass modification for my 1990 SPG. (A picture of the valve is below).

After really thinking about the device, how it works to shut the coolant flow on and off seasonally (open the valve in the winter so the throttle plate wouldn't freeze shut or open, and then close it in the summer to keep the hot coolant away), I got to thinking...

The top coolant line is the 'IN' line, and the lower (closest to the ground) is the 'OUT' line, returning the coolant back into to the block.

The common practice for this modification is to completely remove the OUT line, and put the throttle body side of the IN line to where the engine side of the OUT line goes. Basically, there are no more lines going to the throttle body and you just make the coolant recirculate back to where it came from.

With the valve... I'm starting to see some problems before I even install it...

Please correct me if I am wrong...
-The coolant is pressurized
-The coolant will flow in any open orafice that it has access to

If I would add the on/off valve to the IN line (still keeping the OUT line intact), then would there still be coolant entering the OUT line, up into the throttle body, and pushing against both sides of the valve? In other words, does it look like I would need two seperate on/off valves to keep coolant out of the throttle body?

OR would the valve stop the coolant flow entirely when it is turned to the off position? Hence, the OUT line simply does not allow coolant to travel backwards back up to the throttle body.

I'd love to hear what you guys think. I'm glad I didn't spend the 10 minutes to pop it in before I thought about it. Laziness does pay off ( :

Thanks in advance,
Taylor
90 SPG

RIP Kyle & Tim

posted by 68.83.149...

Posts in this Thread:
Alert me when someone posts in this thread:
Members do not see ads below this line. - Help Keep This Site Online - Signup
Post a Followup

No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.

Name: Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
E-Mail: (Optional)
Re-Enter E-Mail: (Confidential & Secure - Not revealed to other users!)
Note: Please check your spam folder for BB responses.

Subject:

Posting rules are simple - No for sale/wanted ads may be posted here - use the site classifieds.
You may not cross-post your message to multiple BBs.
Not permitted: political/religious topics and being disrespectful (personal attacks, insults, etc...).
 Site Members do not see any red text, inline ad links, bottom of page anchor ads, box ads, or anti-spam check.

Message: (please no for sale/wanted classifieds - post those in the Saabnet.com Classifieds)
Links are now automatically made active, no need for any special code (or use the Option Link field below) - don't put links in () or end with a '.'
To add inline images to your post, use [img]http://www.domain.com/img.jpg[endimg] (or use the Optional Image Link field below).

Links are now automatically made active, no need for any special code (or use the Option Link field below) - don't put links in () or end with a '.'
To add inline images to your post above, use [img]http://www.domain.com/img.jpg[endimg] (or use the Optional Image Link field below).
Optional Link: (e.g. http://www.saabnet.com/)
Link Title: (Optional)
Optional Photo/Image Link: (e.g. http://www.saabnet.com/img.jpg)
Photo/Image to Upload: (Please be patient while file uploads)



StateOfNine.com
SaabClub.com
Jak Stoll Performance
M Car Covers
Ad Available

The content on this site may not be republished without permission. Copyright © 1988-2024 - The Saab Network - saabnet.com.
For usage guidelines, see the Mission & Privacy Notice.
[Contact | Site Map | Saabnet.com on Facebook | Saabnet.com on Twitter | Shop Amazon via TSN | Site Donations]

Random Saabnet.com Member Gallery Photos (Click Image)
This is a moderated bulletin board - Posting is a privilege, not a right. Unsolicited commercial postings are not allowed (no spam). Please, no For Sale or Wanted postings, SERIOUSLY. Classifieds are to be listed in The Saab Network Classifieds pages. This is a problem solving forum for over 250,000 Saab owners, so expect to see problems discussed here even though our cars are generally very reliable. This is not an anything goes type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the Saabnet.com Mission and Purpose Page. Please remember that you are not anonymous. Site Contact | Site Donations | Other Sites by SP - Poverty2Prosperity.org | Run Club Menlo Park | ScreenBot


Site Members do not see red text instructions, bottom of the page anchor ads, or box ads.
Click here to see all the Site Membership Benefits!