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Unread 04-13-2013, 01:45 PM   #946
Grewe02
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The new alternator is in there now, right? Should be able to take it to a shop and have them test it

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Unread 04-13-2013, 02:58 PM   #947
Galt
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Dude you really ought to take some time to read through Jeep hammers posts on alternators and dual batteries. Your starter should not discharge your battery, and the short time that the starter is engaged should not make a difference if the alternator is delivering current or not.

If you want to check your alternator just check the voltage if your battery when the engine is off, then check it when it's running. It should be around 12.4 when off and closer to 14volts when running. If that's all good then there is nothing wrong with your alternator. As jeep hammer has written extensively on, your alternator will never likely pull more than 50amps at a time anyway. So your wasting your money on a "high out put" alternator. If you need more amps for your winch,starter, or big stereo then that is where the extra battery comes into play.

His threads in the pinned topics are definitely worthy of a few nights reading.

Glad to hear your making progress. I think I have mine wrapped up today as well. Beadlocks and a spare showing up in the mail next week.
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Unread 04-13-2013, 03:01 PM   #948
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Just thinking that you should probably test for a parasitic drain on your battery to. You might as you said have a short or possible even some current draw prior to the ignition switch.
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Unread 04-13-2013, 06:14 PM   #949
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Quote:
Originally Posted by RDH View Post
Looks like it was made for it. I'm diggin the old school fighter jet paint scheme.I hope it was just a dead battery but we shall see.
Thanks man! Well the battery wasn't really the problem.....

Quote:
Originally Posted by Grewe02 View Post
The new alternator is in there now, right? Should be able to take it to a shop and have them test it
Its not really new. I pulled it from the junk yard. I'll explain more

Quote:
Originally Posted by Galt View Post
Dude you really ought to take some time to read through Jeep hammers posts on alternators and dual batteries. Your starter should not discharge your battery, and the short time that the starter is engaged should not make a difference if the alternator is delivering current or not.

If you want to check your alternator just check the voltage if your battery when the engine is off, then check it when it's running. It should be around 12.4 when off and closer to 14volts when running. If that's all good then there is nothing wrong with your alternator. As jeep hammer has written extensively on, your alternator will never likely pull more than 50amps at a time anyway. So your wasting your money on a "high out put" alternator. If you need more amps for your winch,starter, or big stereo then that is where the extra battery comes into play.

His threads in the pinned topics are definitely worthy of a few nights reading.

Glad to hear your making progress. I think I have mine wrapped up today as well. Beadlocks and a spare showing up in the mail next week.
I get it you don't have to beat a dead horse. Glad your build is coming along. Only a few weeks till Big Dogs

Quote:
Originally Posted by Galt View Post
Just thinking that you should probably test for a parasitic drain on your battery to. You might as you said have a short or possible even some current draw prior to the ignition switch.
Yeah I plan on adjusting a few things.
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Unread 04-13-2013, 06:53 PM   #950
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Alright....today simply put was challenging. After working all night and getting 2 hours of sleep I headed to the shop. I was not ready for the journey set before me. I did not have time to make it to the parts store before heading into the shop and I am glad I didn't. So hooked up the recharged battery and bingo...fired up. Let it run for a few and thrwe a volt meter on it. magic number 14.4 which tells me the alternator is working as advertised. Looked back at my gauges and no oil pressure. When I tried to roll it out the other night I had not wired up my senders yet so I didn't notice the oil pressure's non existence. Bad, bad, bad on me. One of those things being in to much of a hurry and assumed the motor had oil pressure. The indication was no. So I hooked up a mechanical gauge just incase my gauge wasn't working or the sender wasn't either. Again cranked the motor....no indication of oil pressure. Well next thing to check was the aftermarket oil pan and pickup tube. Drained the pan, pulled the pan, pulled the tube and it was bone dry coming off the oil pump. This was uncharted waters for me so I called my buddy.....(GM Mech for 15 years). He said it wasn't likely that the pump was bad but it may have lost the precharge. So I made the decision to go ahead and pull the pump. Oh man did this kill me inside.
imag0529.jpg  
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Unread 04-13-2013, 07:08 PM   #951
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Did you try pulling the dizzy and priming the pump with a drill or priming tool with a mech gauge hooked up?
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Unread 04-13-2013, 07:23 PM   #952
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So with that decision came pretty much removing everything off the front of the motor. That awesome water pump I just installed.... the fans.... drain the radiator.... then remove the harmonic balancer which was a pain in the @$$
imag0524.jpg   imag0523.jpg  
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Unread 04-13-2013, 07:24 PM   #953
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Did you try pulling the dizzy and priming the pump with a drill or priming tool with a mech gauge hooked up?
Nope....didn't know I could
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Unread 04-13-2013, 07:29 PM   #954
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Next was removing the front main seal and then 4 bolts to remove the oil pump. Pull the bolts off the cap and it was a dry pump. Without oil in the pump it was not allowing it seal to pull through the air in the pick up tube. Pulled everything inside and used gear oil to create a better seal.
imag0526.jpg   imag0528.jpg  
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Unread 04-13-2013, 07:32 PM   #955
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Quote:
Originally Posted by boarderofsnow
Next was removing the front main seal and then 4 bolts to remove the oil pump. Pull the bolts off the cap and it was a dry pump. Without oil in the pump it was not allowing it seal to pull through the air in the pick up tube. Pulled everything inside and used gear oil to create a better seal.
Vaseline is your friend there and use a drill through the distributer hole till you hear it bog down or see pressure with a mechanical gauge.
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Unread 04-13-2013, 07:37 PM   #956
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I hate to say this but while you have the pan off pul a cap and check out your bearings- also peek around the cam bearings too see if you see babbitt oozing out anywhere

Ask me how I know...
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Unread 04-13-2013, 07:39 PM   #957
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After that I reinstalled everything I could. Once I had the pump, tube, and pan installed and put the oil back in it I pulled the coil connectors, and the fuel pump relay line and turned the motor over a couple of times. This was a straight Rocky moment where it wasn't looking good. No oil pressure. I about tossed in the hat on this one.....but Steve the shop lead told me to crank it again. Just like the tiny visible light at the end of the tunnel the gauge needle started to move.....then started climbing till it hit 30..... Yeah I almost cried....lol So small victory today after a ton of *** pain.

Now back to the reason the motor died in the first place and the start of this chasing the rabbit down the bunny hole....The motor had no oil pressure. So it ran until it seized from heat, killing the battery from several attempts at hard starts. I won't know the damage if any until I get the exhaust built. I'm keeping my fingers crossed that this motor is tough and withstould my ******* learning curve....one of those DON'Ts found out the hard way. More to come. On a lighter note about half way through the day a gentlemen pulled in the restoration project next to me. Funny how mine is lifted and his is on the lift...lol 78 CJ5
imag0525.jpg  
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Unread 04-13-2013, 08:07 PM   #958
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Quote:
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I hate to say this but while you have the pan off pul a cap and check out your bearings- also peek around the cam bearings too see if you see babbitt oozing out anywhere

Ask me how I know...
Yeah leaving this one up to the Rock Gods.......I don't have the time or the money at this point to do anything else. Tapped for cash and time....
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Unread 04-14-2013, 09:29 AM   #959
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Yeah leaving this one up to the Rock Gods.......I don't have the time or the money at this point to do anything else. Tapped for cash and time....
Well I feel your pain brother, and I'm hoping all's well. Was the motor a fresh rebuild w new cam or just a freshened up as-is motor?
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Unread 04-14-2013, 12:13 PM   #960
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That sucks, sorry to here about it.

I was under the impression that FI systems used a oil pressure switch to keep 12 volts at the fuel pump, no pressure, pump shuts down.

Bill
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