Coolant overflow bottle ideas - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

howzzzit · 12-17-2023, 06:09 PM

Quote:

Originally Posted by Sheepdip

My hose runs on top between the radiator support panel and the radiator. As long there are no leaks and the overflow bottle has coolant in it, it will suck it back.

Thanks for the pic. I'll check it out.

**'68OrangeSunshine** · 12-17-2023, 06:20 PM

I have the Camaro/Nova style. It tucks in between the passenger side front fender and the battery box. But then it's not in front of the radiator bulkhead. It is tucked away, though.

72SB · 12-18-2023, 01:55 PM

^^^, I have that OER tank in my 67 Camaro. The tank is for a 75 Nova.

The only reason I didn't use it in my 72 (post 15) is because charcoal canister is there so used a Dorman one on core support.

72SB · 12-18-2023, 04:48 PM

Quote:

Originally Posted by 1970cstblazer

Do you have a pic of the front of your truck with the hood shut? I am curious if that tank is easily seen through the grille.

Don't have a pic nor the truck anymore. You could audition something (piece of paper) in the area I put the tank to see if you can see it through grill. If so, it was never a concern I had.

howzzzit · 12-18-2023, 05:52 PM

Quote:

Originally Posted by 72SB

I put the Dorman in my 72. Bought it on Amazon. Use one existing hole and drilled another. used a 1/2" spacer for the offset in core support between holes

Anyone know the hose barb size for the Dorman 630-001? I cant find it and they definitely don't answer the phone.

72SB · 12-19-2023, 02:07 PM

Quote:

Originally Posted by howzzzit

Anyone know the hose barb size for the Dorman 630-001? I cant find it and they definitely don't answer the phone.

I just used the hose from radiator that was on the truck that otherwise was open and just used that on the Dorman barb. Put it through one of the holes, large, that was already in the core support

**MikeB** · 12-19-2023, 06:19 PM

OER 551448 tank with Dorman 82590 cap. Had to use an "L" bracket to support the bottom.

**1970cstblazer** · 12-20-2023, 08:52 AM

The 551448 tank looks like the best option on these.

**MikeB** · 12-20-2023, 12:29 PM

Quote:

Originally Posted by 1970cstblazer

The 551448 tank looks like the best option on these.

Just keep in mind that I had to remove the battery tray (kind of a PITA) and then use an L bracket as a base for the tank.

The silicon hose I used is really nice. It's flexible and is fairly thick-walled. Rated to 460 degrees F. 3/8" ID x 9/16" OD.

https://www.amazon.com/gp/product/B0...e?ie=UTF8&th=1

Ended up using some Dorman 13400 hose clamps I found at Autozone, but they tend to deform because they are not spring steel, like OE. Pretty sad, this imported crap.

**1970cstblazer** · 12-20-2023, 12:36 PM

Thank you for the information.

Only change I will make is using the coolant cap specified for a 1978-79 Nova, which is GM 371978. I think it looks more period correct than the later vented unit.

**'68OrangeSunshine** · 12-20-2023, 04:01 PM

Quote:

Originally Posted by MikeB

Just keep in mind that I had to remove the battery tray (kind of a PITA) and then use an L bracket as a base for the tank.

The silicon hose I used is really nice. It's flexible and is fairly thick-walled. Rated to 460 degrees F. 3/8" ID x 9/16" OD.

https://www.amazon.com/gp/product/B0...e?ie=UTF8&th=1

Ended up using some Dorman 13400 hose clamps I found at Autozone, but they tend to deform because they are not spring steel, like OE. Pretty sad, this imported crap.

I didn't find the need for an L-bracket. The heavy end rests on the fender skirt and follows its slope.
[But, I totally agree on Imported Crap.]

**MikeB** · 12-20-2023, 04:38 PM

Quote:

Originally Posted by '68OrangeSunshine

I didn't find the need for an L-bracket. The heavy end rests on the fender skirt and follows its slope.
[But, I totally agree on Imported Crap.]

I couldn't go behind the indentation in the fender w/o moving my fuse holder. And I couldn't do that because the red wire wasn't long enough. Also, I was able to use a hole that was already there.

I think I referenced your photo a couple of times when doing the job! Thanks.

**Ironhorse** · 12-20-2023, 04:59 PM

For my recovery tank I used a stock w/s washer bottle& bracket. Mounted to P/S fender aft of the battery, run the hose to the radiator overflow vent. Pickup hose in the washer bottle works fine for the return line. Went with a closed system cap and keep it about 1/4 full when cold. Not very fancy and shiny but looks like it belongs there from GM

ZEKE68 · 12-20-2023, 10:52 PM

I used an overflow bottle from a Mitsubishi Eclipse. Wish I could remember which year it was from.

12-17-2023, 06:20 PM	#27
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,185	Re: Coolant overflow bottle ideas I have the Camaro/Nova style. It tucks in between the passenger side front fender and the battery box. But then it's not in front of the radiator bulkhead. It is tucked away, though. Attached Images __________________ Every 25 years I like to rebuild that 292, whether it needs it or not. Last edited by '68OrangeSunshine; 12-17-2023 at 06:29 PM.

12-18-2023, 01:55 PM	#28
72SB Registered User Join Date: Apr 2022 Location: Moorpark, CA Posts: 738	Re: Coolant overflow bottle ideas ^^^, I have that OER tank in my 67 Camaro. The tank is for a 75 Nova. The only reason I didn't use it in my 72 (post 15) is because charcoal canister is there so used a Dorman one on core support.

12-19-2023, 06:19 PM	#32
MikeB Senior Member Join Date: Jul 2000 Location: North Texas Posts: 3,470	Re: Coolant overflow bottle ideas OER 551448 tank with Dorman 82590 cap. Had to use an "L" bracket to support the bottom. Attached Images __________________ Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!

12-20-2023, 08:52 AM	#33
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,427	Re: Coolant overflow bottle ideas The 551448 tank looks like the best option on these. __________________ 1970 K/5 Blazer CST 4WD, Bronze, 93k ACT. miles, 350, 4 speed, positraction, 16.5" x 8.25" wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration in progress... 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 41k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 60k miles, 3.6, 8L45, 3.23 LS, 18" wheels

12-20-2023, 12:36 PM	#35
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,427	Re: Coolant overflow bottle ideas Thank you for the information. Only change I will make is using the coolant cap specified for a 1978-79 Nova, which is GM 371978. I think it looks more period correct than the later vented unit. __________________ 1970 K/5 Blazer CST 4WD, Bronze, 93k ACT. miles, 350, 4 speed, positraction, 16.5" x 8.25" wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration in progress... 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 41k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 60k miles, 3.6, 8L45, 3.23 LS, 18" wheels

12-20-2023, 04:59 PM	#38
Ironhorse Senior Member Join Date: Jul 2001 Location: Wellington, Ks Posts: 10,153	Re: Coolant overflow bottle ideas For my recovery tank I used a stock w/s washer bottle& bracket. Mounted to P/S fender aft of the battery, run the hose to the radiator overflow vent. Pickup hose in the washer bottle works fine for the return line. Went with a closed system cap and keep it about 1/4 full when cold. Not very fancy and shiny but looks like it belongs there from GM Attached Images __________________ 1971 Chevy 1/2T 4x4 LWB 350 V-8 Was sm465-now 350TH/np205 Tilt, Tach, Towhooks Original Truck AM/FM Wellington, Ks

12-20-2023, 10:52 PM	#39
ZEKE68 Registered User Join Date: Jul 2012 Location: Space Coast, Florida Posts: 403	Re: Coolant overflow bottle ideas I used an overflow bottle from a Mitsubishi Eclipse. Wish I could remember which year it was from. Attached Images __________________ 1968 SWB Step Side, Big Block, 4L80E , Running!



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