RX7Club.com


Go Back   RX7Club.com > Generation Specific > 3rd Generation Specific (1993-2002)
Register Forgot Password?

Welcome to RX7Club.com!
Welcome to RX7Club.com,

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join RX7Club.com today!


Reply
 
 
 
 
LinkBack Thread Tools Search this Thread Display Modes
Old 06-03-07, 03:41 AM   #1
Exhaust Leak
5 Year Member
 
The Black Seven's Avatar
 
Trader Score: (0)

Join Date: Nov 2006
Location: Pasadena
Posts: 20
Coolant Overflow Tank Vent Hole

Where exactly is the vent hole for the Coolant Overflow tank? When I was filling coolant in the overflow tank, the coolant was pouring out from the rubber piece between the neck and the tank. By the way the rubber piece looks really brittle. Do I need to replace the overflow tank? or is this where the vent hole is at?
The Black Seven is offline   Reply With Quote
Old 06-03-07, 04:00 AM   #2
putting it back together
 
blwnrtr93's Avatar
 
Trader Score: (0)

Join Date: Jul 2005
Location: Alabama
Posts: 188
Send a message via AIM to blwnrtr93 Send a message via Yahoo to blwnrtr93
There is only one easy way to get to the overflow tank, and it's not really all that easy. I found that the easiest way to get to it is to remove the front bumper. Mine was already off since I'm replacing it with an aftermarket piece.
blwnrtr93 is offline   Reply With Quote
Old 06-03-07, 01:15 PM   #3
Blithering Idiot
 
dontlift's Avatar
 
Trader Score: (0)

Join Date: Jan 2007
Location: NE Pa
Posts: 333
Why the hell are you filling that tank??? Only add to it when it's below the low mark. It's called an expansion tank for a good reason -- you need to leave room in it for the coolant expanding when your engine's hot.

You shouldn't let it get above the F mark (when the engine is cold).
dontlift is offline   Reply With Quote
Old 06-03-07, 01:21 PM   #4
~17 MPG
10 Year Member
5 Year Member
 
scotty305's Avatar
 
Trader Score: (1)

Join Date: Jan 2004
Location: Culver City, CA
Posts: 2,555
Fill coolant at the filler neck. See section 5: Maintenance...

The Big Fat FD3S Cooling Thread:
The Big Fat FD3S Cooling Thread

-s-
__________________
Quote:
Originally Posted by adam c
The FD is a pain in the *** to do just about anything. Is it worth it?? I still have mine
My 1994 RX-7 (vBGarage)
scotty305 is offline   Reply With Quote
Old 06-03-07, 02:10 PM   #5
Exhaust Leak
5 Year Member
 
The Black Seven's Avatar
 
Trader Score: (0)

Join Date: Nov 2006
Location: Pasadena
Posts: 20
Got it, fill from filler neck and AST. But I am still curious where the vent hole is located at.
I was looking down the end of the neck area where it meets the base (a black rubber piece that looks hard and cracked) and saw the coolant leaking out from there. I'm kinda freaked out from there. But I hope that's the spot.
The Black Seven is offline   Reply With Quote
Old 06-03-07, 02:15 PM   #6
Blithering Idiot
 
dontlift's Avatar
 
Trader Score: (0)

Join Date: Jan 2007
Location: NE Pa
Posts: 333
Quote:
Originally Posted by The Black Seven View Post
Got it, fill from filler neck and AST. But I am still curious where the vent hole is located at.
I was looking down the end of the neck area where it meets the base (a black rubber piece that looks hard and cracked) and saw the coolant leaking out from there. I'm kinda freaked out from there. But I hope that's the spot.
I don't there is a vent hole per se -- it's not supposed to get that full. The neck simply acts like a funnel into the reservoir, so it'll leak from the top if you overfill it (or it boils over).
dontlift is offline   Reply With Quote
Old 06-03-07, 02:16 PM   #7
Recovering Miataholic
10 Year Member
 
wstrohm's Avatar
 
Trader Score: (0)

Join Date: Mar 2002
Location: Fountain Valley, CA
Posts: 1,206
You can get to the expansion tank by removing the right side fender liner. Not that hard... you can also remove that tank once you have done that.
__________________
'94 Chaste White PEG, orig. owner, 110K miles on original engine. Bonez DP, Viton hoses. Replaced FD Thermoswitch with FC. Deleted: EGR, AWS, Coolant Fan Recall.
wstrohm is offline   Reply With Quote
Old 06-03-07, 02:22 PM   #8
Derek
5 Year Member
 
DMoneyRX-7's Avatar
 
Trader Score: (2)

Join Date: Sep 2005
Location: Austin, Tx
Posts: 2,007
Send a message via AIM to DMoneyRX-7
someone just post a pic of the damn thing
__________________
'93 FD3S R1 GT35R
Interior/Exterior/Audio MODERATOR
DMoneyRX-7 is offline   Reply With Quote
Old 06-03-07, 09:05 PM   #9
What's your point ?
10 Year Member
 
CantGoStraight's Avatar
 
Trader Score: (0)

Join Date: Feb 2001
Location: Gainesville, Fla.
Posts: 3,576
Send a message via ICQ to CantGoStraight
Quote:
Originally Posted by dontlift View Post
I don't there is a vent hole per se -- it's not supposed to get that full. The neck simply acts like a funnel into the reservoir, so it'll leak from the top if you overfill it (or it boils over).
There is a vent hole on top of the recovery tank (I know because I put an elbow with a tube in it so the coolant would come out in a specific spot if it overflowed instead of it going all over the belly pan and frame work to wher eyou only had a general idea of where it originated from.
CantGoStraight is offline   Reply With Quote
Old 06-04-07, 08:27 PM   #10
Derek
5 Year Member
 
DMoneyRX-7's Avatar
 
Trader Score: (2)

Join Date: Sep 2005
Location: Austin, Tx
Posts: 2,007
Send a message via AIM to DMoneyRX-7
Is their supposed to be a black spongy thing with tape at the very bottom of the neck when it connects to the tank?
__________________
'93 FD3S R1 GT35R
Interior/Exterior/Audio MODERATOR
DMoneyRX-7 is offline   Reply With Quote
Old 06-04-07, 08:31 PM   #11
7-itis
5 Year Member
 
edwin-82/rx7's Avatar
 
Trader Score: (1)

Join Date: Aug 2004
Location: UPSTATE New York
Posts: 399
Send a message via AIM to edwin-82/rx7
Quote:
Originally Posted by DMoneyRX-7 View Post
Is their supposed to be a black spongy thing with tape at the very bottom of the neck when it connects to the tank?
Yes, my brand new one I just bought from Ray has that.


The hole at the top of the overflow tank is a vent to equalize pressure, so that coolant has a spot to flow easily when it is vented from the ast, and so that coolant recovery can happen easily without fighting a vacuum in the overflow tank.

J
edwin-82/rx7 is offline   Reply With Quote
Old 06-04-07, 09:30 PM   #12
Blithering Idiot
 
dontlift's Avatar
 
Trader Score: (0)

Join Date: Jan 2007
Location: NE Pa
Posts: 333
Quote:
Originally Posted by CantGoStraight
There is a vent hole on top of the recovery tank (I know because I put an elbow with a tube in it so the coolant would come out in a specific spot if it overflowed instead of it going all over the belly pan and frame work to where you only had a general idea of where it originated from.
You're right -- I never noticed it. Good idea with the tube, btw.


Quote:
Originally Posted by edwin-82/rx7
Quote:
Originally Posted by DMoneyRX-7 View Post
Is their supposed to be a black spongy thing with tape at the very bottom of the neck when it connects to the tank?
Yes, my brand new one I just bought from Ray has that.
Interesting, mine (an early '93) has just the white plastic fill tube going into the tank. For the OP, the arrow points to the vent hole:
Attached Thumbnails
Coolant Overflow Tank Vent Hole-coolant_tank1.jpg   Coolant Overflow Tank Vent Hole-coolant_tank2.jpg  
dontlift is offline   Reply With Quote
Old 06-04-07, 09:30 PM
RX7Club
Mazda RX7




Paid Advertisement


 
 
 
Reply

Tags
2005, coolant, expansion, hole, location, lt1, mazda, overflow, pour, pouring, put, radiator, recovery, resevoir, tank, vent

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Can I replace my coolant reservoir tank with a coolant overflow tank? 85 FB 1st Generation Specific (1979-1985) 6 04-12-06 03:45 PM
Coolant overflow tank Marcel Burkett 3rd Generation Specific (1993-2002) 3 04-21-04 10:04 PM
coolant Overflow tank: Where is the Hose located that sucks back coolant..Top or side badass7 3rd Generation Specific (1993-2002) 1 02-28-02 03:14 PM
white overflow coolant tank is leaking, could that be the reason for low coolant? LT1-7 General Rotary Tech Support 3 08-02-01 05:59 AM


All times are GMT -5. The time now is 02:57 AM.
All content Copyright 2007 by Internet Brands, Inc.

Contacts