moparvwfreak Posted March 14, 2008 Report Share Posted March 14, 2008 i found a rad at autozone (yeah i know but they, so far, are the only ones that can get one new) but its for a 78. would that bolt in? i am in need of one badly. i dont see why it wouldn't but i figured i would at least ask. Quote Link to comment
banzai510(hainz) Posted March 14, 2008 Report Share Posted March 14, 2008 I believe the earlier 620 had the return hose on the passenger side order the 78/79 rad and order the top hose and bottom hose for that year. I think that should do it. Quote Link to comment
OL YELLER Posted March 14, 2008 Report Share Posted March 14, 2008 The Radiator will fit with no sweat..again the only difference is the location of the upper hose...oh and the later radiator is a larger core? (3 core vs 2core?) Quote Link to comment
datsunaholic Posted March 14, 2008 Report Share Posted March 14, 2008 The latter 3-cores fit but are VERY close clearance to the fan on '72-74 due to the core support geometry. Quote Link to comment
moparvwfreak Posted March 14, 2008 Author Report Share Posted March 14, 2008 i was thnking about modding in electric fans so fan clearance would not be an issue. i think next week i will be ordering it then. a new rad for $149 i cant pass that up. plus i gotta redo all the heater hoses and what not anyway so new hoses are a must to begin with. Quote Link to comment
Figbuck Posted March 14, 2008 Report Share Posted March 14, 2008 Great! I wanna see this. I spent the better part of a day going around to radiator shops and they all told me the same thing... the L20 radiators don't fit in the L16/L18 because of the difference in the core support and that they are too tall. Maybe they meant that it wouldn't fit because it wasn't a direct bolt in. I had other more pressing issues and dropped it but I need a new rad bad. Post up some pics. :) Quote Link to comment
moparvwfreak Posted March 26, 2008 Author Report Share Posted March 26, 2008 alright. the rad i did get was WAY to big. the mounting holes on the core support are 19 34 inches apart. the rad i had in the truck measured 20 34 inches and the one i got was a WHOPPING 23 14 inches. these measurement were made center to center on teh mounting holes. granted there was some play in teh original rad i had in teh truck but not enough to bolt it in. height wise they look pretty much teh same. so...... my new question is... how wide are the mounts for a 72.5, EARLY 73 radiator? my truck was built in 9/73 and as far as i can tell teh core support has NOT been changed. any ideas? i have given you guys the measurements so if that helps thanks! Quote Link to comment
datsunaholic Posted March 26, 2008 Report Share Posted March 26, 2008 23 1/4 sounds like a 720 radiator to me, but they look a lot different. 9/73 isn't an early '73 at all. Not sure it's even a '73... but it's right around the cutoff date (usually August). Note that the door tag SHOULD have 2 dates on it. I've swapped 620 rads all over the place, BUT not with older straight-support trucks ('72-74). I have a pile of 620 radiators (gee, I need to clean out this sty, I was keeping them as cores but haven't bought a rad at a parts store in years) but I think most had holes in them. Well, except the 2 brand new factory NOS ones in boxes I bought from that parts liquidation firm before they recycled everything. I know my books say that a '73 radiator and a '74 are different, then '75-77 are different again, and '78-79 had 2 versions. That isn't counting differences for A/T and Manual, which there was. The Nissan manual lists at least 12 different part numbers for North American 620 radiators, but aftermarket shops don't show that many. Quote Link to comment
OL YELLER Posted March 27, 2008 Report Share Posted March 27, 2008 Ok I measured my 72.5 and it is 19 3/4 inches center to center....(stock set up)...Ol Yeller is a 73, but, the core support was replaced with one from a 78 when i was buildin it a few years ago.....that one measures 20 3/4 center to center...The new radiator I just got from Rockauto.com is listed as a 3 core for a 79 and it too measures 20 3/4 inches....hope this helps Quote Link to comment
moparvwfreak Posted March 27, 2008 Author Report Share Posted March 27, 2008 PERFECT! thats exactly the info i needed. so i need an early rad. that clears everything up! anyone got one??? Quote Link to comment
datsunfish Posted March 27, 2008 Report Share Posted March 27, 2008 I have a 72.5 and have recently adapted a 720 wide 2 core that works great.I am going to write it up and show some pics in the truck section so maybe consider that. Quote Link to comment
OL YELLER Posted March 27, 2008 Report Share Posted March 27, 2008 Rockauto.com radiator for a 79 620...$114 bucks (3 core) Quote Link to comment
moparvwfreak Posted March 27, 2008 Author Report Share Posted March 27, 2008 Rockauto.com radiator for a 79 620...$114 bucks (3 core) still to wide to bolt in. hence why i need the early one. i want to be able to secure it so it looks right. not held in my bungee cords like ti is now. Quote Link to comment
OL YELLER Posted March 27, 2008 Report Share Posted March 27, 2008 Maybe do what I intend to do...since ther is only a bit less than 1/2 inch each side, I will slot the holes a bit to accomodate the smaller core support, use larger fender washers and use the original nuts...looks like I will be good to go... Quote Link to comment
moparvwfreak Posted March 27, 2008 Author Report Share Posted March 27, 2008 i would do that but the one thats just a touch wide (the one i got with the truck) is SHOT! hence why i needed the radiator. i will take a look and see if that woudl be doable. also hood bolts work GREAT for the radiator bolts. same size and thread pitch. i had a spare set off the hood i got. :D Quote Link to comment
yello620 Posted March 27, 2008 Report Share Posted March 27, 2008 i would do that but the one thats just a touch wide (the one i got with the truck) is SHOT! hence why i needed the radiator. i will take a look and see if that woudl be doable. also hood bolts work GREAT for the radiator bolts. same size and thread pitch. i had a spare set off the hood i got. :D The SHOT one that you have is a perfect one to grind away on the mounting holes to see if you can make a new one work, before you spend money and grind on a ppart that you cannot return now. Jason Quote Link to comment
moparvwfreak Posted March 27, 2008 Author Report Share Posted March 27, 2008 thats my thinking. i am also going to see if one of my spare "dub" radiators will work. even if i have to ziptie the damn thing in i will have the smurf running right. if i can get it running i will ratchet strap teh hood down and bring it to GG sunday. otehrwise i will have my passat. Quote Link to comment
yello620 Posted March 27, 2008 Report Share Posted March 27, 2008 http://forum.ratsun.net/showthread.php?t=1560&highlight=radiator I have never tried to link a thread before, so see if this works. Little bit of radiator info from a couple of months ago. Jason Quote Link to comment
moparvwfreak Posted March 27, 2008 Author Report Share Posted March 27, 2008 the link worked fine. i will try slotting the rad itsself and see what happens. then and only then, if it works will i order up a new one for a later model. that way if it works then i can figure it out. as it sits i will look into a VW rad so i can get it working soon. Quote Link to comment
yello620 Posted March 27, 2008 Report Share Posted March 27, 2008 I was just looking in my book at the VW radiators too. I would look into a modine #633 or a #937 by the pics in my book. #633 fits rabbits 77-82 and #937 fits rabbits and sciroccos 82-84. They are wider than a datsun but they should not be too tall. These two numbers appear to have the lower hose on the correct side for a L-series motor. Hope this helps Jason Quote Link to comment
moparvwfreak Posted March 27, 2008 Author Report Share Posted March 27, 2008 i have a couple of cabby ones. if memory serves tey have both inlet and outlet on the pass side. so.... i will look at those tomorrow. Quote Link to comment
Bleach Posted March 27, 2008 Report Share Posted March 27, 2008 Summit racing sells generic aluminum radiators for $180 Or just drill holes in your core support. Is this an all original show truck? ...I just dont see the problem. I made stuff fit when I had a 620. Quote Link to comment
moparvwfreak Posted March 27, 2008 Author Report Share Posted March 27, 2008 Summit racing sells generic aluminum radiators for $180 Or just drill holes in your core support. Is this an all original show truck? ...I just dont see the problem. I made stuff fit when I had a 620. no its not an all original show truck but i just HATE doing make shift shit if i dont have to. thats just em. i am a perfectionist when it comes to my cars. hence why i havent gotten my scamp put back together yet. its only been 11 YEARS since it has seen the road. :blink: i also dont want to have to relocate anything if i dont have to. i can live with bungee cords untill i find the proper stuff IF i ahve to. but i would rather have proper parts ya know? Quote Link to comment
yello620 Posted March 28, 2008 Report Share Posted March 28, 2008 Then deal with the bungee cords a little longer while waiting for a early 620 one to show up at a JY new you or for Ted to part one out and have it recored. Then it all bolts in perfect and looks correct. I know it will cost more money, but it is correct to the truck. Jason Quote Link to comment
moparvwfreak Posted March 28, 2008 Author Report Share Posted March 28, 2008 that be the idea. i liek ti when stuff looks right. Quote Link to comment
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