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833 troubles Good news! #1416832
04/08/13 04:11 PM
04/08/13 04:11 PM
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jcc Offline OP
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Tried to get the car out this past weekend but it went downhill fast.

Here are I believe are the pertinent facts:

1. Small blk with Passon Alum 4 speed 6? years old, , 2000 trouble free miles, has sure grip, OEM tapered axles.
2. Car has seen no miles in 4 years
3. When car sits on jack stands, rear wheels and DS turn easy by hand when in neutral both ways, engine off.
4. Engine starts fine, pushing clutch in tranny goes into any gear fine.
5. When letting clutch out when in 1st gear on the jack stands, unless revs are brought up to say 2500rpm engine dies, and wheels still turn very hard/slow.
6. Pushing clutch in with trans still in gear and with wheels still turning, causes wheels to immediately to lock up.
7. Above is the same in 2nd but much harder to get wheels to turn, reverse the same, can't get wheels to turn without killing motor in 3rd or 4th.
8. I can get trans side cover shift levers into all normal? positions from below

Nothing indicates to me clutch/pressure is stuck.
Not sure if 8.75 could lock itself up. Everything goes south with trans in gear?

I'm at a loss, and am trying to eliminate as much as possible before yanking trans.

I have called Jamie and we are scratching our heads.

Any ideas?

Last edited by jcc; 04/10/13 11:02 PM.

Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
Re: 833 troubles [Re: jcc] #1416833
04/08/13 04:30 PM
04/08/13 04:30 PM
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Gilbertsville, PA 19525
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Pntastar69 Offline
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Take it for a ride instead of on the stands.

Re: 833 troubles [Re: Pntastar69] #1416834
04/08/13 04:32 PM
04/08/13 04:32 PM
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jcc Offline OP
If you can't dazzle em with diamonds..
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I would burn the clutch up before getting it out of the driveway. I put it on the stands to assist in troubleshooting, and see what was locking up.


Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
Re: 833 troubles [Re: jcc] #1416835
04/08/13 04:34 PM
04/08/13 04:34 PM
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Lincoln Nebraska
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RapidRobert Offline
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The DS turns fine both ways in N so the 8&3/4 is not the culprit. #6 makes me think it is a clutch issue but that's speculation on my part since I am not a clutch/stick guy (904's forever). Here's a BTT & holler how it goes


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Re: 833 troubles [Re: jcc] #1416836
04/08/13 04:34 PM
04/08/13 04:34 PM
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Posts: 2,362
Wheatfield, NY
Cuda340 Online work
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Is the shifter linkage adjusted properly? Is it stuck between reverse and first? Weird....

Re: 833 troubles [Re: RapidRobert] #1416837
04/08/13 04:42 PM
04/08/13 04:42 PM
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jcc Offline OP
If you can't dazzle em with diamonds..
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Quote:

The DS turns fine both ways in N so the 8&3/4 is not the culprit. #6 makes me think it is a clutch issue but that's speculation on my part since I am not a clutch/stick guy (904's forever). Here's a BTT & holler how it goes




I agree, my concern about the 8.75 was maybe a loose pinion nut and the pinion was driving into something under power under load, but reverse is same and Jamie thought I hear a lot of suspicious noise if the rear end was the issue. It is a 742 Alum case.


Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
Re: 833 troubles [Re: jcc] #1416838
04/08/13 04:55 PM
04/08/13 04:55 PM
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Lincoln Nebraska
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RapidRobert Offline
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Quote:

It is a 742 Alum case.


I'd love to have that as it'd certainly reduce alot of unsprung weight in the stock car. I'd maybe take off the clutch cover & side cover again & see if anything abnormal is apparent & maybe haveing a helper work the pedal & turn the rear wheels by hand & you underneath would make something show up

Last edited by RapidRobert; 04/08/13 05:03 PM.

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Re: 833 troubles [Re: jcc] #1416839
04/08/13 05:04 PM
04/08/13 05:04 PM
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West Tennessee
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rbstroker Offline
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If you really think that the 8 3/4 is the issue, wouldn't pulling the driveshaft either confirm or deny?


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Re: 833 troubles [Re: rbstroker] #1416840
04/08/13 05:13 PM
04/08/13 05:13 PM
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Lincoln Nebraska
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RapidRobert Offline
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Quote:

If you really think that the 8 3/4 is the issue, wouldn't pulling the driveshaft either confirm or deny?


Yes it would & sure wouldn't hurt to k.i.s.s. & check to be sure when you go to pull the shaft to get the trans out. I'd put a plastic bag over the extension housing to contain the lube & start it up & retry it. You'll have your answer in seconds & you might get REAL lucky & find out that it's the pumpkin


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Re: 833 troubles [Re: RapidRobert] #1416841
04/08/13 05:24 PM
04/08/13 05:24 PM
Joined: Dec 2003
Posts: 22,695
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jcc Offline OP
If you can't dazzle em with diamonds..
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Pulling the DS is not that big of deal at this point, and it will definitely rule out the rear end, and I have few other options. Thanks


Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
Re: 833 troubles [Re: jcc] #1416842
04/08/13 05:28 PM
04/08/13 05:28 PM
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Lincoln Nebraska
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RapidRobert Offline
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Holler what it ends up being


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Re: 833 troubles [Re: RapidRobert] #1416843
04/08/13 06:00 PM
04/08/13 06:00 PM
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Russ H. Offline
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Maybe a stupid question but is your emergency brake fully released??

Re: 833 troubles [Re: Russ H.] #1416844
04/08/13 06:04 PM
04/08/13 06:04 PM
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jcc Offline OP
If you can't dazzle em with diamonds..
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Not stupid, and yes, nor seem to be bound up in any way, and wheels turn freely in the air.

I'm hoping it is something stupid, but unfortunately I will have to come here and tell you guys, don't know which is worse?


Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
Re: 833 troubles [Re: jcc] #1416845
04/08/13 06:12 PM
04/08/13 06:12 PM
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Lincoln Nebraska
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RapidRobert Offline
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Quote:

I'm hoping it is something stupid, but unfortunately I will have to come here and tell you guys, don't know which is worse?


If you end up not having to pull the trans (or the pumpkin) you'll get over it real fast


live every 24 hour block of time like it's your last day on earth
Re: 833 troubles [Re: jcc] #1416846
04/08/13 06:17 PM
04/08/13 06:17 PM
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Russ H. Offline
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Will the wheels turn freely with the transmission in gear and clutch depressed?

Re: 833 troubles [Re: jcc] #1416847
04/08/13 06:25 PM
04/08/13 06:25 PM
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Mass
DAYCLONA Offline
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Seen this happen to some cars that sit for awhile, everything seems fine when the vehicle is jack up, but once the wheels are on the ground and a resistance load is applied to the rear end the car goes no where, or it takes some serious RPM's to move it,...9 out of 10 times it's the rear end, drop the driveshaft, all 4 wheels on the ground you should be able to move the car forward and rearward by hand, if you can't, then it's the rear,...sure you can pull the chuck/axles, but what I've found that works best is to just pull the shaft, and slowly tow the car in any fashion as long as the rear wheels are on the ground, usually frees up the rear axle without any harm, last parts car I had recently had this issue...

mike

Re: 833 troubles [Re: Russ H.] #1416848
04/08/13 09:27 PM
04/08/13 09:27 PM
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jcc Offline OP
If you can't dazzle em with diamonds..
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Quote:

Will the wheels turn freely with the transmission in gear and clutch depressed?



No, i'm on the way home to drop the DS, stay tuned.


Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
Re: 833 troubles [Re: DAYCLONA] #1416849
04/08/13 10:44 PM
04/08/13 10:44 PM
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Rittman Ohio
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Quote:

Seen this happen to some cars that sit for awhile, everything seems fine when the vehicle is jack up, but once the wheels are on the ground and a resistance load is applied to the rear end the car goes no where, or it takes some serious RPM's to move it,...9 out of 10 times it's the rear end, drop the driveshaft, all 4 wheels on the ground you should be able to move the car forward and rearward by hand, if you can't, then it's the rear,...sure you can pull the chuck/axles, but what I've found that works best is to just pull the shaft, and slowly tow the car in any fashion as long as the rear wheels are on the ground, usually frees up the rear axle without any harm, last parts car I had recently had this issue...

mike



I have seen surface rust on the ring gear do that before
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Re: 833 troubles [Re: fourgearsavoy] #1416850
04/08/13 11:13 PM
04/08/13 11:13 PM
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Posts: 22,695
Bitopia
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jcc Offline OP
If you can't dazzle em with diamonds..
jcc  Offline OP
If you can't dazzle em with diamonds..
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First I'm working alone at this point, so my observations are limited.

I dropped the DS, seemed a normal amount of tranny fluid ran out, so its not dry. Started car without DS, put in 1st, let clutch out, no bog, no hesitation, had no way to verify trans output rotation, was worried about sticking a spare unsecured yoke and it spitting out, and I would have a hard time viewing it anyway by myself. I can get helper tomorrow if anyone thinks seeing it rotate is needed at this point.

While DS is out, rear end yoke turns nice both ways, feels to be normal, has some play, more then what I would like, but it Is what i have felt in past on other 8.75. Reinstalled DS and big bog in 1st gear and hardly can get wheels to turn in the air.

So unless the 833 will only bind up with a load or with a yoke, and I need 833 experts to advise on this possibility, it would then point to something in the rear. The 8.75 was built by a well known local shop that assembled my new R&P, rebuilt the SG, with all new parts in the Alum carrier. Could an adjuster nut backed out, and ring shifts and locks under load, or a SG bolt back out or ring bolt? I know that's all guessing and pulling the rear end is only way to find out for sure, just want to check off 833 first.

Thanks guys.


Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
Re: 833 troubles [Re: jcc] #1416851
04/08/13 11:21 PM
04/08/13 11:21 PM
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Lincoln Nebraska
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RapidRobert Offline
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Quote:

So unless the 833 will only bind up with a load or with a yoke,


The trans I'm thinking


live every 24 hour block of time like it's your last day on earth
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