Midnight-280Z Posted July 17, 2008 Share Posted July 17, 2008 Well, I am about to replace my old plastic coolant overflow tank with an aluminum one. The question I have is....Which one of these two should I get? http://images.marketplaceadvisor.channeladvisor.com/fullView.asp?id=124686896&fc=0&img=http://sagelwwa.fatcow.com/826-111-101.jpg http://www.stealthwork.com/obx-high-pressure-universal-coolant-reservoir-tank-p-209.html?language=en&name=OBX+High+Pressure+Universal+Coolant+Reservoir+Tank The Weapon R one looks like it vents into the atmosphere while the OBX one looks like it is sealed. To me, I like the looks of a Weapon R but The OBX might be better.. If i am correct, shouldn't I get the OBX one because it's sealed and keeps the system pressurized? Thanks again for the help...One Step Closer to My RB Swap () Quote Link to comment Share on other sites More sharing options...
johnc Posted July 17, 2008 Share Posted July 17, 2008 The sealed tank is generally required on any race track to prevent coolant from getting on the track. The vented tank is normal for a street car. Why would a coolant overflow tank be named "Weapon R"? "Careful, there's a Weapon R coolant overflow tank under the hood of that Dastun. Keep the children back." I would wait for the "Weapon R V-TEC Type R" overflow tank. Its good for another 40 horsepower. Quote Link to comment Share on other sites More sharing options...
Midnight-280Z Posted July 17, 2008 Author Share Posted July 17, 2008 ROFLMAO.....hahahahahahahaha it's more like 50 horses added..and for every sticker that's 20 more horses....I would really like to get a trusted brand...but I don't want to pay like 200+ for it... so I want a decent brand. Plus Weapon R's webpage is what really drove me in to think about it (All The pretty models)..ROFL I'm just an goof.. Quote Link to comment Share on other sites More sharing options...
Challenger Posted July 17, 2008 Share Posted July 17, 2008 I had some weapon r seat brackets come on the seats I bought a while back. They are very nice in quality and I assume these would be just as nice. Quote Link to comment Share on other sites More sharing options...
johnc Posted July 17, 2008 Share Posted July 17, 2008 I'm sure the parts are well made and work as advertised. I just think the name is funny. "Hey John, who made the coolant tank in your Z's engine compartment?" "Arrrggghhh matey. That's one of dem dar Weapon Arrrrggghhhhsss!" "I didn't know it was talk like a pirate day." Quote Link to comment Share on other sites More sharing options...
Slow_Old_Car Posted July 17, 2008 Share Posted July 17, 2008 i'm more curious if anyone knows where to find those push on fittings at with a decent selection? i've been trying to find a vendor that carrys them for a long time now. Quote Link to comment Share on other sites More sharing options...
Midnight-280Z Posted July 18, 2008 Author Share Posted July 18, 2008 Just bought the Weapon R one....I'll post up pics of all my new parts once it gets here. Quote Link to comment Share on other sites More sharing options...
S30 SPL Posted July 26, 2008 Share Posted July 26, 2008 Another alternative brand that is reasonable is CUSCO. They have lots of these little parts that are not so expensive but very nice. Every so often, you can also find Greddy and HKS parts that are reasonable. Signal Auto also has some nice looking tanks. Quote Link to comment Share on other sites More sharing options...
73DatsunZ Posted July 28, 2008 Share Posted July 28, 2008 Theres a guy out here in Tucson who has one of those Heineken mini kegs mounted under the hood as his radiator catch can. It looked like it belonged there. Its awesome Quote Link to comment Share on other sites More sharing options...
Midnight-280Z Posted July 28, 2008 Author Share Posted July 28, 2008 Heineken mini keg........I'm goin to buy one and make it just for fun.....My friends will love it once they see the Heine under my hood....Might win a car show too lol but thats planned in the future.... part has not come yet.....but my back ordered oil pump is shceduled to come in on Wednesday...Hopefully by the end of the week I'll have all my parts...I'm going to make a posting about all the ordered parts for my car...I don't think it will be 56K friendly.. Quote Link to comment Share on other sites More sharing options...
twsutt Posted July 30, 2008 Share Posted July 30, 2008 My '75 280z originally came without an overflow tank; just a hose that ran the overflow to the ground. The overflow tank that was put on by a previous owner is an old 12oz. Pepsi can - pull tab type, not the kind with the tab attached. Quote Link to comment Share on other sites More sharing options...
73DatsunZ Posted July 31, 2008 Share Posted July 31, 2008 Heineken mini keg........I'm goin to buy one and make it just for fun.....My friends will love it once they see the Heine under my hood....Might win a car show too lol but thats planned in the future.... part has not come yet.....but my back ordered oil pump is shceduled to come in on Wednesday...Hopefully by the end of the week I'll have all my parts...I'm going to make a posting about all the ordered parts for my car...I don't think it will be 56K friendly.. Mini Heineken Keg catch cans ftw! I want to put one in my car when its done Quote Link to comment Share on other sites More sharing options...
ol doc gully Posted July 29, 2014 Share Posted July 29, 2014 Is there a recommended 'recovery' type of radiator cap people use when adding a coolant overflow tank to the older models? Or can you just use the ones from 77+ Z models when they started using coolant recovery setups? ie. the stock cap (which I assume the one to be in my car) appears to only have the rubber seal and spring and not the extra valve to allow coolant back into the system when cooling after shutdown. Just wondering if there is one that people use that fits these radiators and has the right valve or seal positioning. I know its an old thread but it seemed to be the most relevant one I could find to the question I had - thanks in advance. Quote Link to comment Share on other sites More sharing options...
NewZed Posted July 29, 2014 Share Posted July 29, 2014 The reservoir tanks were used before 1977. The caps all divert overflow to a hose. The only new question is whether or not the cap and radiator cap flange can hold a vacuum to pull the coolant back in. There is no extra valve just two round rubber seals. The main pressure relief spring and seal could be termed a valve. But it's the only one. Quote Link to comment Share on other sites More sharing options...
ol doc gully Posted July 29, 2014 Share Posted July 29, 2014 I suppose I would argue that they are both effectively check valves, but that seems to be a matter of semantics. But yes, by 'recovery' I suppose I meant "hold a vacuum to pull the coolant back in" - do you have a recommendation for a radiator cap to perform this function and fit a stock 240Z radiator? Quote Link to comment Share on other sites More sharing options...
NewZed Posted July 29, 2014 Share Posted July 29, 2014 (edited) Click on the Compatibility tab on the attached link and you'll find a few options. I copied some of the Nissan models in a picture. Could be that the upper rubber seal on yours just rotted away. They do that. http://www.oreillyauto.com/site/c/detail/MCS0/7013/03357.oap?year=1976&make=Nissan&model=280Z&vi=1209226&ck=Search_C2021_1209226_-1&pt=C2021&ppt=C0331 Edited July 29, 2014 by NewZed Quote Link to comment Share on other sites More sharing options...
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