Radiator Options For KA 521

[]2eDeYe]

That looks nice, sorry about not getting back to you about the dimensions. I am a slacker :)

[flatcat19]

It looks like the cap/neck sticks up a bit too much from the pic. 

 

Be sure to have rubber washers between the radiator and any steel. 

Electrolysis is a bitch.  

[datson4life]

It looks like the cap/neck sticks up a bit too much from the pic. 

 

Be sure to have rubber washers between the radiator and any steel. 

Electrolysis is a bitch.  

the cap neck sticks out about the same as the stock one, accoding to pics, ill measure my buddy's 521 radiator tomorrow

 

can u explain the electrolysis part tho please :confused:

[flatcat19]

http://community.ratsun.net/topic/58363-aluminum-radiator-in-620-easier-than-you-thought/

 

Copy what he did. 

 

Electrolysis is a bad chemical reaction created within water ran near a DC source.

The idea is to isolate the water/radiator from the grounded chassis. 

Steel/copper radiator does not suffer the way aluminum does. 

 

It's actually a really cool process-it just reaks havoc on older cars with upgraded stuff. 

 

http://www.ve-labs.net/electrolysis-101

 

Galvonic reaction is another association you may look in to. 

[datson4life]

thanks for all the info fellas, looks like the cap is gonna hit :sleep:

whats your opinions on removing and sealing up the radiator cap and adding this?

http://www.ebay.com/itm/Radiator-Hose-Filler-Radiator-Hose-Filler-63730-/221284801756?pt=Motors_Car_Truck_Parts_Accessories&hash=item33859a1cdc&vxp=mtr

[flatcat19]

Can you bend your mounts lower? How much interference do you have?

[datson4life]

where its at in the picture its already sitting on the front fender mounts

[mrbigtanker]

ive heard of ppl using a rabbit radiator, anybody got info or links to that or what year rabbit

dont they suck

[datson4life]

what about scirrocco? i got a few buddies running those, they seem legit

[mrbigtanker]

Same thing,they will work but not the best choice,that's one in my red truck and it runs hot.

[ol' 320]

Not against any rules I know of.

 

 

I'm using stock 620 3 core radiators for my KA's

 

 

Redeye: Where do you buy your three row 620 rads, and is a 620 rad interchangeable with a KA 521 rad?

[jesusno2]

Radiators are always a hit and miss situiaton for me is bigger always better? Seems to me that yes its bigger but is it harder to cool down that much mass once it gets hot? And living in the PNW and driving datsuns in cooler weather warm up time is important to me too, does it take longer for a engine to warm up that much mass? Nissan's design for a ka24e or de was for a 2 row brass radiator i think maybe they were plastic not 100% sure on that. I know that the aftermarket 240 aluminum radiator fits in a 521 with some trimming. Having a good fan WITH i shroud is the key to keeping the engine cool

[]2eDeYe]

Redeye: Where do you buy your three row 620 rads, and is a 620 rad interchangeable with a KA 521 rad?

 

 

Pick n Pull. :) 

 

Not sure if they are interchangable, I don't think they would be a direct fit as the later 620 core support was modified to fit the 3 row radiator.