1986 Coolant Reservior Cap Question
Thread Starter
Instructor
Joined: Dec 2004
Posts: 217
Likes: 1
From: Drums PA
1986 Coolant Reservior Cap Question
Just received a new cap from Eckler's for my 1986, and it didn't have the gasket on the underside of the cap. I called their tech line, and they said they don't come with any gasket. I thought that the gasket was an important part of getting a good seal so the siphon effect works properly after each heating and cooling cycle. The gasket on my old cap is completely shot and unusable. If truly needed, anyone have a part number or sourcing location? I have no problem returning my current one to Eckler's if someone can suggest where to purchase one that comes with the gasket and looks factory stock.
Regards, Chris
Regards, Chris
Burning Brakes
Joined: Jun 2008
Posts: 895
Likes: 3
From: toledo ohio
funny, same thing just happened to me! i happened to have a new cap that i bought for my old iroc and never installed, it had the gasket so i swiped it from there. they sell that one at all the auto parts store on the help wall, itll look just like yours but not have a stick, so you can get that gasket from there
Drifting
Joined: Mar 2013
Posts: 1,952
Likes: 239
From: Venice Cali.
Hows this
http://www.ebay.com/itm/110938998233...84.m1439.l2649
They don't need a gasket because it is vented anyway. The tank is for boilover and
should only have a tiny bit of Antifreeze in it. If something comes out into it your engine was too hot.
http://www.ebay.com/itm/110938998233...84.m1439.l2649
They don't need a gasket because it is vented anyway. The tank is for boilover and
should only have a tiny bit of Antifreeze in it. If something comes out into it your engine was too hot.
Thread Starter
Instructor
Joined: Dec 2004
Posts: 217
Likes: 1
From: Drums PA
funny, same thing just happened to me! i happened to have a new cap that i bought for my old iroc and never installed, it had the gasket so i swiped it from there. they sell that one at all the auto parts store on the help wall, itll look just like yours but not have a stick, so you can get that gasket from there
Hows this
http://www.ebay.com/itm/110938998233...84.m1439.l2649
They don't need a gasket because it is vented anyway. The tank is for boilover and
should only have a tiny bit of Antifreeze in it. If something comes out into it your engine was too hot.
http://www.ebay.com/itm/110938998233...84.m1439.l2649
They don't need a gasket because it is vented anyway. The tank is for boilover and
should only have a tiny bit of Antifreeze in it. If something comes out into it your engine was too hot.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
The gasket won't do anything useful. If you look at the cap, it's got HUGE holes in it.
The hose from the radiator to the coolant overflow tank goes to the bottom of the overflow tank so it only sucks in coolant (and not air) when the system cools down.
The hose from the radiator to the coolant overflow tank goes to the bottom of the overflow tank so it only sucks in coolant (and not air) when the system cools down.
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Hows this
http://www.ebay.com/itm/110938998233...84.m1439.l2649
They don't need a gasket because it is vented anyway. The tank is for boilover and
should only have a tiny bit of Antifreeze in it. If something comes out into it your engine was too hot.
http://www.ebay.com/itm/110938998233...84.m1439.l2649
They don't need a gasket because it is vented anyway. The tank is for boilover and
should only have a tiny bit of Antifreeze in it. If something comes out into it your engine was too hot.
As the coolant heats up and pressure increases beyond the radiator cap pressure rating, coolant will flow into the expansion tank. Once the coolant starts to cool down, any vacuum in the cooling system will draw coolant from the expansion tank back into the cooling system.
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