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Hi All, First off I apologize if this topic has been covered elsewhere. I though I've researched the forum good enough, but I have not been able to find good discussion that would cover this topic extensively. If there is a threat out there that you know of, please point me to it. The problem My 280Z radiator is leaking slowly at the very top. It does not leak when sitting in the garage, but shortly after I fire it up is sips and splatters the coolant in the engine bay and on the hood. I'm looking at replacing it with an aluminum radiator. I plan to use the car form spring to fall, no winter driving. Mostly for driving to and form work but also for weekend SCCA autocross type events. I also would love to be able to take the car to the track even and not be afraid that it will overheat or brake mechanically on me. That's my ultimate goal. I have done one autocross even this year and the car had no overheating problems. However after discovering the leak I have not take the car anywhere outside town :/ I typically have to drive 1-5 hours to get autocross or track event, so I need to be able to do that as well in this car. The options From what I could find online, there is couple of options on MSA website: http://www.thezstore.com/page/TZS/PROD/16-6967 three row http://www.thezstore.com/page/TZS/PROD/classic15e/16-7017 cross flow (expensive!) Here is the Champion, 3 row option: http://www.championradiators.com/Datsun-280z-radiator-1975-1978 Here is the Koyo cross flow (2 row I think): http://www.koyoradracing.com/news.asp?id=61 Here is abalcdragon options, however I think it is not aluminum: http://www.blackdragonauto.com/icatalog/ZR/full.aspx?page=51 Anybody has any other piston to consider that they had food experience with? Did anybody worked with any of the options above? I also would like to consider to install electrical fan instead of the stock engine driven one. MSA, Champion, and blackdragon have options for electric fan kits. Did anybody used them in their installation? What about the the fan shroud if I change it to electrical? From MSA: http://www.thezstore.com/page/TZS/PROD/classic15p/16-7052 From Champion: http://www.championradiators.com/cooling_fans Another thing I need to consider is new water pump or at least water pump gasket since mine is leaking. I have been reading that the original water pumps give up easily, so since "I'm there" and have good access I would like o replace it. MSA has a water pump for about $50, which seams reasonable. Any thoughts on that?

Hi all, Looking for guidance regarding part selection and source for water pump and fan clutch on a '73 S30. Nissan dealer quoting $90 for the water pump and indicates a new pully is recommended (as a result of a slight part design change); $67 for the pully. ($47 for the water pump on Motorsport Auto) Nissan dealer telling me that I can't buy the fan clutch alone, so fan clutch with fan is $271.15 (compared to $80 on Motosport Auto) I suspect this is an OEM vs. aftermarket question. Anyone here experienced with replacing these parts and have advice? Newbie post. Did search the forums, apologies for anything I've missed. Thanks, -TD