Ashley's New Ride - '80 CJ7 Laredo 304 Auto - Page 2 - JeepForum.com
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Unread 12-27-2012, 07:58 PM   #16
MrBeast
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Sounds like that may be an exhaust leak to me, or it may be your power steering pump, try running it shortly with the belts disconnected and see if the sounds change. Granted the sound isn't all that great but I'd definitely take a stab at that.

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[URL="http://www.jeepforum.com/forum/f22/1980-cj7-first-jeep-build-1243620/"]80 CJ7 "The Kraken" - a project 25 years in the making[/URL] AMC 304 V8, NV4500, Dana 300, Dana 44, 9 inch, M.O.R.E. SRS, YJ tub.

AT3 US Navy 1999-2003

[B][SIZE="3"] Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt[/SIZE][/B]
[SIZE="1"](When catapults are outlawed, only outlaws will have catapults)[/SIZE]
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Unread 12-27-2012, 08:07 PM   #17
roboto65
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I would check your exhaust gaskets sometimes that sounds like lifters and is cheaper than a valve job. Next would be to pull the valve covers and check for tightness on the rockers if you find a loose one could be the lifter is collapsed or just dirty.

Oops posted right after ya LOL
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Unread 12-27-2012, 08:16 PM   #18
Rollbar
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Thanks, it does have exhaust leaks where the headers converge on the collector. I will run some MMOIL through it and see what happens but I'm almost 90% sure the lifters are clacking. Engine sat for along time so it might have a lot of crud built up. Had 39,000 + on OD but this model year doesn't have the 100,000 mile mark on it if memory serves so I don't know the mileage of the engine. We will see when I change the oil etc. etc.

Thanks,
Jim
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Unread 12-27-2012, 08:20 PM   #19
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Two questions please.

1. Does this model year have a D-300. Looks like it but not 100% sure. Auto/single stick in cab and a tall one at that.

2. Ashley was adding fluids to the drive-train and can't get the AMC20 filler plug out. I tried w/the allen key but it is in there. Maybe a little heat around the plug or ?

Thanks,
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Unread 12-27-2012, 09:23 PM   #20
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I will get a cheapie allen head socket from the parts house, one of the 2.99 specials and an extension to match, then put it in the plug, whack the end of the extension with a 3lb hammer a few times, usually that is enough to loosen em up. Also it may be worth the while to check the push rods to see if they are straight. easiest way is to pull em and roll em across a piece of glass, if they lump they are bent.
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[I]"He used to be a pretty nice feller, now he's a welder"[/I]

[URL="http://www.jeepforum.com/forum/f22/1980-cj7-first-jeep-build-1243620/"]80 CJ7 "The Kraken" - a project 25 years in the making[/URL] AMC 304 V8, NV4500, Dana 300, Dana 44, 9 inch, M.O.R.E. SRS, YJ tub.

AT3 US Navy 1999-2003

[B][SIZE="3"] Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt[/SIZE][/B]
[SIZE="1"](When catapults are outlawed, only outlaws will have catapults)[/SIZE]
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Unread 12-27-2012, 09:24 PM   #21
inovermyhead2
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Unfortunately the 304's are famous for oiling issues. The way the engine was designed is that it pumps oil from front to back. The problem is that the oil looses pressure as it makes it's way toward the rear of the motor passing through one oil galley to the next which ultimately causes an untimely death of a lot of 304's. If the engine has been sitting for a while it just makes it worse due to sludge buildup.Your lifters may be starving for oil. Get a cheap harbor freight mechanics stethoscope and try and listen through the intake manifold. You will probably find that it is the rearmost lifters that are making all the racket. If that's the case, time for a rebuild and a good machine shop knows the tricks for curing the oiling problem inherent with those motors.
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Unread 12-27-2012, 09:43 PM   #22
Rollbar
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Thanks for the allen wrench tip, I'll have to get one. I would also like to change the allen type plug out to one like the D-300's have so I can get a regular wrench on it. Do you know the thread etc, I guess if I get ti out I could take it in to match it up.

As for the 304 oiling, that will be something to look into and I'll have to get a stethoscope.

Thanks again,
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Unread 12-27-2012, 09:50 PM   #23
MrBeast
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I didn't know about the 304 oiling issue, do the 401's have it as well? I have been thinking about building one up for mine.
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[I]"He used to be a pretty nice feller, now he's a welder"[/I]

[URL="http://www.jeepforum.com/forum/f22/1980-cj7-first-jeep-build-1243620/"]80 CJ7 "The Kraken" - a project 25 years in the making[/URL] AMC 304 V8, NV4500, Dana 300, Dana 44, 9 inch, M.O.R.E. SRS, YJ tub.

AT3 US Navy 1999-2003

[B][SIZE="3"] Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt[/SIZE][/B]
[SIZE="1"](When catapults are outlawed, only outlaws will have catapults)[/SIZE]
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Unread 12-28-2012, 05:35 AM   #24
roboto65
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A large screwdriver works just as well put your ear to the handle and touch the tip on the spot wala
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Unread 12-28-2012, 10:55 AM   #25
Rollbar
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Thanks,
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Unread 12-28-2012, 07:01 PM   #26
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Well, Ashley's alternator went the other day so we bought one a AZone (for now-lifetime warranty) until she rebuilds the Jeep, then we can put that lifetime alternator on the shelf for emergency situations. 63 amps won't be enough if she winches a lot.

The new one installed, volt meter read 12.4 volts w/a fully charged battery.

Today it barley turned over but did fire up, and the voltage was 11.2 and 11.0 w/lights on.

We left it running for a while and shut it down-would not restart. Called AZone & a new alternator will be in Monday.

I guess she will get more practice if she is off work Monday - pics coming.
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Unread 12-28-2012, 07:26 PM   #27
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I was just wondering, does the 1980 CJ have a voltage regulator else where that I don't know of, or something else to look for?

It does have a GM style alternator & I'm 99% sure they have the voltage regulator built in.

Thanks,
Jim
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Unread 12-28-2012, 08:29 PM   #28
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It does.

In my view if you're running a winch a lot, go with two large batteries in parallel. I'm not of the opinion that you need a high output alternator, just a good reserve.
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Unread 12-28-2012, 08:45 PM   #29
Rollbar
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Thank you,
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Unread 12-29-2012, 07:16 PM   #30
Rollbar
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I had another other video where the meter showed the 8 volts, but YouTube or my internet was on/off today and I couldn't get it to upload so I deleted it off my iPhone.

Here is another video about an hour after the first where the alternator would only put out 8 volts but now 15.9

I'll have to check some wires like Steve said on Monday.

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