Thought I'd share something.
- Thread starter 1wickedA70
- Start date
Was it possible that the mating surface was slightly uneven?
I could see that being a contributing factor... Otherwise, as Suprakid stated, maybe a bad cast.
I could see that being a contributing factor... Otherwise, as Suprakid stated, maybe a bad cast.
ForcedTorque;1803775 said:
Yes, JZ
Coolant in the alternator is done by BMW. They have it on their 7 Series. We did a rebuild on one and had the alternator rebuilt while it was out as its a pain to pull in the car.
Let's say you were running entirely water in your coolant system. And it froze overnight. Could this happen?
You should only run Toyota Red in a Toyota cooling system. Well, water freezes below 32F, so by the numbers, it could freeze in the block if you has straight water. I have never seen it but it doesn't mean it can't happen.
OP had green coolant. I doubt that's why it cracked. Maybe it was leaned up against something when the motor was out this last time Kevin?
OP had green coolant. I doubt that's why it cracked. Maybe it was leaned up against something when the motor was out this last time Kevin?
IBoughtASupra;1803821 said:
Nope. I dropped the motor in the black car the same day I took it out the white car.
Couple weeks back I saw that some coolant was leaking out of the waterpump. Turns out a bolt was loose lol dunno how that happened? So I tightened it and everything seemed fine. Then last night I was driving the car locally and all of a sudden my voltage started fluctuating like crazy and the car was buggin out. And I smelled antifreeze through the roof. I was about 4 blocks from home so I drove in my driveway and popped my hood.
Antifreeze gushing all over my alternator! It was dark and I didn't wanna bother with it. So I left it and began taking everything out this morning. And I found a hairline crack. It wasn't anywhere near the width of the crack in the picture though. That Pic was taken after I knocked it with a hammer a bit. Lol
Judging by where it's cracked it seems likely that it was from the bolts not being evenly torqued or from a piece of the old gasket stuck to the housing (somewhere near the middle of the pump). Aluminum cracks easily if things aren't perfectly flat.
I cracked a GM 3.4L upper intake manifold right down the middle once because I left a small chunk of the old gasket on the manifold by mistake.
I cracked a GM 3.4L upper intake manifold right down the middle once because I left a small chunk of the old gasket on the manifold by mistake.
destrux;1803856 said:
Well, it would only crack there if the front half was changed and then not properly installed, not sure if he changed the front half.
The pump comes assembled. In order to break that way, you'd have to torque down one side more than the other. When installing a JZ waterpump, you don't touch the front half. There are five or six bolts that hold the JZ pump to the block, front half is not touched. Look at the picture and you will see what I am talking about. Only thing that could cause this is if the alternator was forced on which would put stress to the water pump as it bolts onto it as well.
He had a leak, more than likely displacing the gasket. Overtightening in that spot would cause it to crack quite easily. Cause sounds pretty clear (i.e. what did he do? :rofl: )
Poodles;1803903 said:
Lol yea same thing I was thinking..I forgot how annoying it is to take off and install this pump -_-