I've searched the Forum, and have not been able to find any information about 240Z aluminum radiators as sold on Ebay. Champion seems to be one of the manufacturers; there are a lot of sellers marketing their radiators. Koyo is another. Here are some examples:

http://motors.shop.ebay.com/__?_from=R40&_trksid=p3872.m39.l1313&_nkw=240z+radiator&_sacat=

Does anyone have any experience with any of these manufacturers or sellers?

I purchased a champion from Ebay. The first one that was delivered leaked very badly. I sent it back and the new one they sent leaked slightly. You get what you pay for.

I put one into my 240Z. I won a new 2-row version for $90. What a steal! It fit great, looked great, cooled the car fine, but after a few weeks, I noticed a micron sized leak in an upper tank weld. I took a round file to the weld, notched it, and filled it with JB weld. Problem solved so far for almost a year. I can't complain for the price I paid.

I also replaced the radiator cap with a Stant. The one that came with the tank looked so cheap and had sharp edges.

I put the Champion one in my 72 240. Works great, no leaks or problems.

i also purchased a Champion to cool my 73 with a/c. looks great, no leaks, and cools the car way better than the old copper style radiator.

I got a 2-core Champion as well. It looks great and cools well. The only problem I had was bent mounting tabs when I received it, but I bent them back and was good to go. Remember to soft mount these Aluminum rads or they will crack sooner or later.

I've searched the Forum, and have not been able to find any information about 240Z aluminum radiators as sold on Ebay. Champion seems to be one of the manufacturers; there are a lot of sellers marketing their radiators. Koyo is another. Here are some examples:

http://motors.shop.ebay.com/__?_from=R40&_trksid=p3872.m39.l1313&_nkw=240z+radiator&_sacat=

Does anyone have any experience with any of these manufacturers or sellers?

Aluminum has a great bling factor. It isn't as good or as strong as a brass unit though IMHO. Besides quality control from new, there is also the galvanic issues. I went through two aluminum radiators in my custom 71 Land Rover before I realized it was being eaten as a giant anode. These must be fully isolated from the steel rad support using plastic/rubber bushings/tubes to prevent the galvanic reaction.

If you need a good stock radiator I have one out of my 71 240Z. I replace it with a three core for a future L2.8 project. I also have some later 280Z radiators too. PM if interested.

Nice to know you are looking for a radiator. Getting close to being done!!

Paul

Also installed one about a year ago. No problem at all.

Nice to know you are looking for a radiator. Getting close to being done!!

Paul

This is actually for the street car, but I'm also trying to decide if I should replace my Griffin radiator in the race car. I just got it back from Earl Owens Chassis before New Years. The cage is done, as well as some other items (front strut brace, fuel cell frame & cover, front sway bar mount). Next is body work and paint.

Aluminum has a great bling factor. It isn't as good

You're right, it's better than the stock.

That could be argued. The advantage of aluminum is larger tubes (less blockage potential) and light weight. Fragility and corrosion-prone works against it. I know all manufacturers are using aluminum/plastic radiators but primarily to reduce weight. Given 35 years of building cars and trucks and using both in a variety of applications I'd say a good ol' stock brass radiator serves its purpose well in most situations. If you're in the market for a new radiator because your old one is shot then go get the aluminum if it makes you happy. BTW, I've got a stock Camaro aluminum radiator in my LS1 powered '71 Land Rover trialer so I'm not against aluminum rads.