Got Hot!

[Disposition]

Last one...

[240ZX]

Just a suggestion,............get rid of that fan blade asap, how that it is completely out of balance and will destroy the water pump soon!!! Try an electric fan that's thermostaticly controlled. You'll free up a little horsepower and no more fan blade problems. Just an idea!

[Bambikiller240]

Originally posted by Disposition

This proximity issue may be due to the fact that the car is a 72 and the motor is a 73. Just a guess.

Shouldn't have anything to do with it. 73 240Z's used the same engine block, same motor mounts, same water pump, same fan assembly, and radiator as 72's.

It *could* be that the car was in a front end accident at some point in time before you owned it, and the radiator support was not placed "exactly" where it belongs. If seen more than a few cars where; after a body repair, the radiator support placement causes the radiator to sit closer to the fan than it did before the damage.

[frank13]

Wrong fan clutch! The fan is to far foward. There should be at least two inches of space between the FAN and the rad core. The pics of your set up shows the wrong clutch. The fan blade sit over the fan clutch. so that when installed it covers the clucth. your has the wrong one. That looks like the clucth from the old engine, which does not work with the plastic fan blade. Or the PO installed it wrong. MSA or somebody sold a kit to upgrade the metal fan blade to the plastic one. Maybe the PO tried that but did it wrong. Or just put the plastic blade on the old clucth. I tried this during an engine change, it doesn't work. If I remeber right it also sat to far out and I couldn't get it in past the rad. :devious:

[frank13]

Also, have you checked your motor mounts lately?? To me it also looks a bit too low and could also have moved foward. Just something else to check. If motor mounts are bad or tweaked the motor could walk foward and kiss the RAD. :devious:

[Disposition]

Thanks for the suggestions. If I understand your advice correctly I should be looking for a clutch and fan for a 73. Is this correct? Will that be a metal or plastic fan?

[mdbrandy]

Originally posted by Disposition

Thanks for the suggestions. If I understand your advice correctly I should be looking for a clutch and fan for a 73. Is this correct? Will that be a metal or plastic fan?

Metal fans only came on 70's and maybe early 71's. Unless you're doing a stock restore, you don't want them. They are heavy and tend to wear out the water pumps. A 73 would be a plastic fan anyway.

[sblake01]

My thoughts were that if the water pump bearing had failed and caused the water pump to 'walk' there would have been damage to the radiator itself rather than just having the fan wedge against the bottom tank. Looking at the pictures, I agree with frank13, wrong clutch fan. Also, there was a chance that the car didn't run overheated long enough to cause further damage. That is why I didn't talk about blown head gaskets, warped heads/blocks etc. Glad to hear there was no other damage. A new and correct fan and fan clutch and you should be good to go!

[Disposition]

Sounds good, thanks for all of the help, I'll keep you posted...

[Ed]

Here is a picture of the two different clutches. The one on the left is for a 73 the one on the right is for a 81.

[Bambikiller240]

There is also a fan clutch that came on the 70-71 model 240Z's with a metal fan blade assembly. Sorry, I don't have a pic of it, but it won't work with the plastic fan blade assemblies.

[frank13]

Hey Ed doesn't the Pic of Disposition's fan clutch (fan2) look just like the one on the right that you posted? Hum??? sblakeo1, the fan hit the top. If the bearing walks through the actual water pump housing the fan assembly + shaft will go through the RAd. If it just got a little silly and lose it could jam into the lower lip of the TOP tank. Or more like what happened here, the blades jammed under the fan blade shield. Which in it self tells me the engine might not be aligned properly. Or possible also wrong radiator! Maybe the PO when swapping over to the wrong Fan Clutch, also swapped the wrong RAD? Hey Disposition Sweat Looking ride! Hate you!!!! Got any pics in your Gallery? My first '71 was that color. Hated it, NOW I miss it dearly!!!!!! When you gonna do a compression test?? :devious: