Jayden71 Posted July 24, 2009 Report Share Posted July 24, 2009 With the weather being pretty hot right now, close to 100 every day, I thought my 521 might need an expansion tank next to the radiator. I don't have any problems overheating but, this idea cannot hurt anything. To have the coolant go into a tank instead of on the ground is better in my opinion. Very few items are needed for this little project... A drill A few zip ties 3/8" tubing I used a 1.75 liter jug. Anything larger may not fit in the space next to the 521 rad. Next thing I did was drill a hole in the jug lid, slightly smaller than the tubing On the end of tubing that is going into the jug I cut an angle piece out just to be sure it sucks out coolant. I inserted tube into jug on one end and the small pipe under rad cap on other end. I did not use the small clamp, used a zip tie instead. Secured tank with one tie at the top and I may put one on the bottom but, it fits pretty snug in there so we will see what happens. Before After:) Total time for install was meybe 15 minutes. After install I drove it around for 20 minutes and it seems pretty secure. Total cost including the lemonade jug was $6. :) I decided to leave the labels on the jug, my Datto likes lemonade.:D 1 Quote Link to comment
datzenmike Posted July 25, 2009 Report Share Posted July 25, 2009 (edited) Unless you have the proper rad cap you will have to manually empty the catch can into the rad when it cools. The proper rad cap allows the liquid to siphon back into the rad as it cools and contracts. Starting with the '78 620, coolant recovery was used, so a '78 cap should fit the bill for your rad. Cap # 21430 C0500 Still it's a great idea to prevent waste. I did this on my 521 back in the day. Edited July 25, 2009 by datzenmike 1 Quote Link to comment
nismo dr Posted July 25, 2009 Report Share Posted July 25, 2009 I've seen a lot of old hot rods with jack daniels bottles for coolant tanks - pretty cool. not that limeade doesn't rock - just sayin 1 Quote Link to comment
izzo Posted July 25, 2009 Report Share Posted July 25, 2009 like aid is the shit! glad to see other people like it 1 Quote Link to comment
ggzilla Posted July 25, 2009 Report Share Posted July 25, 2009 Fanta Orange 21oz bottle is good for 2 more HP. 1 Quote Link to comment
MikeRL411 Posted July 25, 2009 Report Share Posted July 25, 2009 A beer can works fine. Run a piece of wire through the pop tab and hook to any available bolt hole or bolt body. Net cost zero, and you got to empty the can. 1 Quote Link to comment
Jayden71 Posted July 25, 2009 Author Report Share Posted July 25, 2009 Fanta Orange 21oz bottle is good for 2 more HP. :lol::lol: 1 liter Mountain Dew bottle must be good for 5hp!! 1 Quote Link to comment
ggzilla Posted July 25, 2009 Report Share Posted July 25, 2009 I heard some are using Mt Dew but I worry about corrosion. Fanta is the tried and true... Note the FES (Fanta expansion system) on this Datsun: 1 Quote Link to comment
moparvwfreak Posted July 26, 2009 Report Share Posted July 26, 2009 now thats Ratsun right there. i should do that for my 73 once i fix it. 1 Quote Link to comment
hessianben Posted July 26, 2009 Report Share Posted July 26, 2009 haha good form.... mine's made from a Sauza tequila bottle! only some tequila left...:P 1 Quote Link to comment
datzenmike Posted July 26, 2009 Report Share Posted July 26, 2009 ..... only some tequila left...:P Anti-freeze! 1 Quote Link to comment
hessianben Posted July 26, 2009 Report Share Posted July 26, 2009 mmmmmmm..... ....stingy:p 1 Quote Link to comment
phiz Posted July 26, 2009 Report Share Posted July 26, 2009 Here's the puke can on my Z: 1 Quote Link to comment
yello620 Posted July 26, 2009 Report Share Posted July 26, 2009 Phiz, I heard about that energy drink a while back but never have seen it on the shelves around here. On the coolant bottle, I went a little different route with mine. I found one from a 91 honda accord, took the bracket too. It is mounted in factory holes to the core support, by drilling two new holes in the bottle bracket and using a couple of washers as spacers to keep from smashing the rib/bump in the back of the honda bracket. Bumps can be seen in the second pic. Couple of pics... I was more interested in an appearance that looked factory for mine.:cool: 1 Quote Link to comment
ggzilla Posted July 26, 2009 Report Share Posted July 26, 2009 1979-1982 Datsun 210 bottle is similar to the Honda setup, but keeps it all Nissan. And has a square shape fitting for 1960s and 1970s Datsun. 1 Quote Link to comment
Guest DatsuNoob Posted August 10, 2009 Report Share Posted August 10, 2009 I bought one of those "Venom" energy drinks the other day, and was surprised at how sturdy the aluminum bottle was for being a disposable. They're very thick. I may make one out of it. Quote Link to comment
fisch Posted August 10, 2009 Report Share Posted August 10, 2009 I bought a home made one of of ebay, painted it and put it on the front bumper! But if I were going to run a bottle or can, dude, it has to be a Japanese soda or beer!!! Get creative people! 3 Quote Link to comment
bonvo Posted August 16, 2009 Report Share Posted August 16, 2009 this is what im gonna use for mine 1 Quote Link to comment
MikeRL411 Posted August 18, 2009 Report Share Posted August 18, 2009 Pokari "Sweat" would be sweet [pun intended]. 2 Quote Link to comment
72240z Posted August 18, 2009 Report Share Posted August 18, 2009 (edited) haha good form.... mine's made from a Sauza tequila bottle! only some tequila left...:P Anti-freeze! You know liquor is the home treatment for antifreeze ingestion? lol Just fyi. Cudos to fisch too, I agree and thats my plan. To get my girls fam to send me some crazy shit no one here will have seen let alone have. Edited August 18, 2009 by 72240z 1 Quote Link to comment
burrito213 Posted May 19, 2010 Report Share Posted May 19, 2010 there is also the new aluminum budweiser bottles for the one who wants a little color 1 Quote Link to comment
bonvo Posted May 19, 2010 Report Share Posted May 19, 2010 a word of caution i made one out of the nos energy drink bottle as shown earlier in the thread and the hot coolant caused it to contract and spit all my coolant out of the radiator on the way to Monteray i then promptly replaced it with a zx bottle so if your going to make one out like in this thread i advise glass or an aluminum can 1 Quote Link to comment
74datsun620 Posted May 26, 2010 Report Share Posted May 26, 2010 I used a crush glass bottle 1 Quote Link to comment
Pumpkn210 Posted May 26, 2010 Report Share Posted May 26, 2010 Gots a Crystal Head Vodka bottle for mine! 1 Quote Link to comment
Brian D Posted September 20, 2010 Report Share Posted September 20, 2010 here is mine 1 Quote Link to comment
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