Coolant overflow bottle (FAQ)

Herb · 02-09-07, 06:38 AM

I just added a coolant overflow bottle to my '71. Originally, it was just draining the coolant overflow onto the driveway.

I bolted the overflow bottle to the side of the radiator housing and ran the tubing into the top and sealed her up with duct tape as I don't have the cap. The bottle top sits about level with the radiator cap.

Since doing this I've had coolant leak at the lower rad hose....and I'm wondering if it has anything to do with how I've connected this coolant overflow bottle. Does this overflow bottle need to breathe?...it can't now as it is sealed up with duct tape. Does it need to sit lower down in the engine compartment to facilitate flow?

Thanks for any suggestions....

yotawheeler · 02-09-07, 06:58 AM

mmmm dont take my word for it but im pretty sure it needs to breath, mine didnt have a over flow bottle on it either and i just riged it up with a 2L pop bottle drilled a hole through the cap and never used anything to seal it....the hose was a pretty close fit though and it seems to be working

Shawn Russell · 02-09-07, 07:19 AM

Yes, it needs to breath. When the water goes in the bottle, the air has to go out.... The suction of the water cooling in the engine will draw the water back into the engine.

Shawn

steverb · 02-09-07, 07:21 AM

i keeped loosing my lid so now i just dont put one on. but the fluid dosent spill out so i just leave it with the lid off.

Herb · 02-09-07, 08:29 AM

Thanks guys...I'll let it breathe then.

CHeers.

Poser · 02-09-07, 12:32 PM

The 60 series trucks have a great coolant recovery tank system that I have installed into early 40 series that did not come with them.

These pics are of the bottle and mount that I am running in my junk:

Poser · 02-09-07, 12:35 PM

Another truck in the shop...

This configuration put the tank on the passenger fender with a little braket I fabricated and welded the Toyota bracket to:

Poser · 02-09-07, 12:37 PM

The new OEM pieces and part numbers:

wantatlc · 02-09-07, 12:53 PM

jeezzz... no coolant container thread would be complete without this...

http://forum.ih8mud.com/1324075-post.html

bsevans · 02-09-07, 04:49 PM

Quote:

Originally Posted by wantatlc

jeezzz... no coolant container thread would be complete without this...

http://forum.ih8mud.com/1324075-post.html

or this

Coolant Recovery and Winshield Washer Tanks

numtel · 02-09-07, 04:51 PM

I just use the generic one from kragen's. It works great. Has a vent and comes with some hose.

Poser · 02-09-07, 04:54 PM

Thanks for adding those guys!

jsaltlick · 02-09-07, 04:59 PM

My overflow bottle is a plastic Folgers coffee container. It's a one-off restoration item. Very rare.

65swb45 · 02-09-07, 11:42 PM

Herb, if you pay close attention to the FJ60 bottle assembly pics that Poser posted, you will notice that where the hose goes into the bottle, it goes in via a tube that extends down into the bottle. The older units also had a tube, and the ones before that fed the coolant in from the bottom.

The point is that if your 'feed' either goes in from the bottom, or reaches down to the bottom, it will 'draw' back in to the radiator better, and will also help reduce blowby from the bottle.

Best

Mark A.

Lt1cruiser · 02-10-07, 12:25 AM

Quote:

Originally Posted by numtel

I just use the generic one from kragen's. It works great. Has a vent and comes with some hose.

I also use the generic one and it does work great its mounted it on the Radiator support.

badass · 02-21-07, 06:13 PM

Quote:

Originally Posted by Poser

The new OEM pieces and part numbers:

Poser, how much all these peices cost from toyota? Thanks.

Poser · 02-21-07, 06:22 PM

Quote:

Originally Posted by badass

Poser, how much all these peices cost from toyota? Thanks.

I do not remember...

Send cruiserdan a pm, listing the part numbers and he should be able to let you know.

CardinalFJ60 · 02-21-07, 06:42 PM

So....my 60 has that setup; it's got that longer hose dipping into the reservoir.

My 40 (new to me) has the bottle, but no hose going to the bottom. Should I have that? Pics and intro to the 40 side of the world coming soon. :-)

Poser · 02-21-07, 06:53 PM

Yes, it will need that in order to draw the coolant/fluid back into the engine...unless the hose comes out of the bottom of the coolant container...

Herb · 02-23-07, 07:18 AM

OK, thanks guys. I have insterted a tube into the top to act as a breather, it goes to the bottom of the tank, then up and out and is fastened to the outside of the tank, pointing down. The tube from the radiator goes in to the tank and goes all the way to the bottom in order to allow it to draw fluid back in.

Thanks to all for the help.

Herb · 02-23-07, 07:19 AM

Poser, thanks for the part numbers and pictures....that is good stuff. I may need to replace my rigged set up once I finish with all my other "issues".

Cheers!

Volunteer · 02-23-07, 01:39 PM

Quote:

Originally Posted by Poser

The new OEM pieces and part numbers:

You're the man, I need one of these jewels right now. Called earlier in the week for a factory 78 jug to replace mine as it just cracked when I snapped the cap on and like everything else I call about its discontinued. I will go with this setup.

Thanks

02-09-07, 06:38 AM	#1
Herb IH8MUD Addict Join Date: Dec 2005 Location: Virginia TLCA# 18324 Posts: 595	Coolant overflow bottle (FAQ) I just added a coolant overflow bottle to my '71. Originally, it was just draining the coolant overflow onto the driveway. I bolted the overflow bottle to the side of the radiator housing and ran the tubing into the top and sealed her up with duct tape as I don't have the cap. The bottle top sits about level with the radiator cap. Since doing this I've had coolant leak at the lower rad hose....and I'm wondering if it has anything to do with how I've connected this coolant overflow bottle. Does this overflow bottle need to breathe?...it can't now as it is sealed up with duct tape. Does it need to sit lower down in the engine compartment to facilitate flow? Thanks for any suggestions.... Attached Images __________________ '71 FJ40

02-09-07, 06:58 AM	#2
yotawheeler IH8MUD Addict Join Date: Apr 2006 Posts: 801	mmmm dont take my word for it but im pretty sure it needs to breath, mine didnt have a over flow bottle on it either and i just riged it up with a 2L pop bottle drilled a hole through the cap and never used anything to seal it....the hose was a pretty close fit though and it seems to be working __________________ in my driveway.... '74 FJ40- disc brakes, saginaw,8274. SM420 sitten in the shop just waiting '78 FJ45 project rig x2 '81 BJ42 '86 HJ60

02-09-07, 07:19 AM	#3
Shawn Russell IH8MUD Regular Join Date: Dec 2003 Location: So Cal Posts: 250	Yes, it needs to breath. When the water goes in the bottle, the air has to go out.... The suction of the water cooling in the engine will draw the water back into the engine. Shawn __________________ 65 V8J45 SWB, 70 V8J40

02-09-07, 08:29 AM	#5
Herb IH8MUD Addict Join Date: Dec 2005 Location: Virginia TLCA# 18324 Posts: 595	Thanks guys...I'll let it breathe then. CHeers. __________________ '71 FJ40

02-09-07, 12:32 PM	#6
Poser Oh...Durka Durka Durka. Join Date: Oct 2003 Location: in the shop TLCA# 1856 Posts: 13,947	The 60 series trucks have a great coolant recovery tank system that I have installed into early 40 series that did not come with them. These pics are of the bottle and mount that I am running in my junk: Attached Images

02-09-07, 07:21 AM	#4
steverb EH! Join Date: Dec 2006 Location: Surrey B.C. Canada Posts: 195	i keeped loosing my lid so now i just dont put one on. but the fluid dosent spill out so i just leave it with the lid off.

02-09-07, 12:35 PM	#7
Poser Oh...Durka Durka Durka. Join Date: Oct 2003 Location: in the shop TLCA# 1856 Posts: 13,947	Another truck in the shop... This configuration put the tank on the passenger fender with a little braket I fabricated and welded the Toyota bracket to: Attached Images

02-09-07, 12:37 PM	#8
Poser Oh...Durka Durka Durka. Join Date: Oct 2003 Location: in the shop TLCA# 1856 Posts: 13,947	The new OEM pieces and part numbers: Attached Images

02-09-07, 12:53 PM	#9
wantatlc IH8MUD Lifer Join Date: Jun 2005 Location: SoCal - westsiiiide Posts: 1,441	jeezzz... no coolant container thread would be complete without this... http://forum.ih8mud.com/1324075-post.html __________________ SoCal FJ - 1974 FJ40 \| Trail Photos \| Parts Wanted & 4Sale My FJ is better than your honor student SPECS: SBC 350 \| 4spd \| Front discs \| Saginaw \| 33's \| 3" lift SUA \| Rancho 9000's \| Detroit rear \| Dual gas tanks \| BeCool aux fan \| Sliders \| Onboard air \| Stamped Bezel

02-09-07, 04:51 PM	#11
numtel IH8MUD Regular Join Date: Feb 2005 Location: Chico, CA TLCA# 14946 Posts: 400	I just use the generic one from kragen's. It works great. Has a vent and comes with some hose. __________________ 99" FJ40 - Trailbusters 4x4 - Toyota Rocks TLCA Chapter - Bent & Twisted Forum

02-09-07, 04:54 PM	#12
Poser Oh...Durka Durka Durka. Join Date: Oct 2003 Location: in the shop TLCA# 1856 Posts: 13,947	Thanks for adding those guys!

02-09-07, 04:59 PM	#13
jsaltlick ...put you in an FJ today Join Date: Dec 2006 Location: Millis Beach TLCA# 17094 Posts: 1,938	My overflow bottle is a plastic Folgers coffee container. It's a one-off restoration item. Very rare. __________________ John 1983 VJ47 Crew Cab "The Great Pumpkin" 1992 M-101 Tons of 40 parts for sale <---Link Finally I can get what I've always wanted....a used Toyota.

02-09-07, 11:42 PM	#14
65swb45 elder statesman Join Date: Apr 2004 Location: so cal, going 45 TLCA# 1086 Posts: 6,542	Herb, if you pay close attention to the FJ60 bottle assembly pics that Poser posted, you will notice that where the hose goes into the bottle, it goes in via a tube that extends down into the bottle. The older units also had a tube, and the ones before that fed the coolant in from the bottom. The point is that if your 'feed' either goes in from the bottom, or reaches down to the bottom, it will 'draw' back in to the radiator better, and will also help reduce blowby from the bottle. Best Mark A. __________________ A carbureted man in a fuel injected world. 65SWB45, 64LWB45, 68FJ40,72V840, 76HJ45[going],84FJ60[gone], 76K5, 73Sub454, 89Sub7.4[gone], 97Sub5.7 TLCA delegate, Trail Crew-LAC TLCA, The White Trash of the Elwood Chapter my website: http://www.marksoffroad.net

02-21-07, 06:42 PM	#18
CardinalFJ60 IH8MUD Addict Join Date: May 2003 Location: Louisville, CO Posts: 696	long inner hose on 40 series coolant bottle So....my 60 has that setup; it's got that longer hose dipping into the reservoir. My 40 (new to me) has the bottle, but no hose going to the bottom. Should I have that? Pics and intro to the 40 side of the world coming soon. :-) __________________ 1987 FJ60, SROR Sliders, lockers, 4.11s, 33s and other stuff 1977 FJ40, mostly stock.

02-21-07, 06:53 PM	#19
Poser Oh...Durka Durka Durka. Join Date: Oct 2003 Location: in the shop TLCA# 1856 Posts: 13,947	Yes, it will need that in order to draw the coolant/fluid back into the engine...unless the hose comes out of the bottom of the coolant container...

02-23-07, 07:18 AM	#20
Herb IH8MUD Addict Join Date: Dec 2005 Location: Virginia TLCA# 18324 Posts: 595	OK, thanks guys. I have insterted a tube into the top to act as a breather, it goes to the bottom of the tank, then up and out and is fastened to the outside of the tank, pointing down. The tube from the radiator goes in to the tank and goes all the way to the bottom in order to allow it to draw fluid back in. Thanks to all for the help. __________________ '71 FJ40

02-23-07, 07:19 AM	#21
Herb IH8MUD Addict Join Date: Dec 2005 Location: Virginia TLCA# 18324 Posts: 595	Poser, thanks for the part numbers and pictures....that is good stuff. I may need to replace my rigged set up once I finish with all my other "issues". Cheers! __________________ '71 FJ40

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