4 speed drag in neutral

[440+6]

how much drag should there be in a 18 spline 4 speed, on the bench, in neutral,
when spinning the input shaft how hard should it be to stop the output shaft?

 

[Dipstick]

In neutral you're still spinning the cluster gear so it depends on the weight of the lube, a transmission filled with 90 weight will be harder to turn than one filled with ATF.

 

[steve340]

Some transmissions in neutral if you turn the input shaft the output shaft will also turn.
I have experience this a lot and they have never been an issue or a known working OK trans.
A finger pinch (should be fairly easy) if you get my drift should be enough to stop the output shaft turning.

 

[440+6]

Some transmissions in neutral if you turn the input shaft the output shaft will also turn.
I have experience this a lot and they have never been an issue or a known working OK trans.
A finger pinch (should be fairly easy) if you get my drift should be enough to stop the output shaft turning.

It's not too easy, it takes some effort to stop the output shaft, any idea where the problem is?

 

[steve340]

It may be a slight case misalignment or the gears on the mainshaft causing a drag.
As Dipstick said you have to overcome the stickiness of the lube. When the correct oil is used and the gearbox is warm this is perfectly fine.
If you can stop the shaft turning with your fingers it will probably be OK. It will take more effort if it is cold but if you cannot stop it with fingers maybe not right.
However I am not there to feel it for myself. It is a guessing game.
If you select top gear does the box rotate freely and smoothly?
Are you prepared to run it and see how it is?
If you leave the box to warm up in the sun is it easier?

 

[mopar 3 B]

Could be front bearing friction on the output shaft. How are you trying to stop the output shaft? If by hand on the output shaft it will be difficult. With a yoke installed not so much.

 

[440+6]

Could be front bearing friction on the output shaft. How are you trying to stop the output shaft? If by hand on the output shaft it will be difficult. With a yoke installed not so much.

Just removed from the car and i'm turning the input shaft by hand and trying to stop the output by hand.
I just removed the trans because it was hard to get into first gear at a stop.
Before i removed it i had the car on a hoist and with the engine running when you release the clutch the input shaft stops almost immediately (no free spinning), and when you can jab it into gear you can see the clutch move a few degrees, when driving at a slow roll it goes in no problem, its when the output shaft is stopped that it wont go into gear most of the time.

 

[steve340]

I would say from your last description you have a clutch problem or a first gear syncromesh problem.
The real problem with your car has nothing to do with the output shaft in my opinion.
The reason it goes into gear while you are slowly rolling is just that - everything is turning slowly and it is much easier to get everything to line up and therefore go in to gear.
If it is any help I had a car with very similar symptoms and the clutch was the problem.

 

[steve340]

Your problem could also be bell housing alignment.

 

[440+6]

Bellousing is 3 thousands so it's fine , clutch is releasing completely, double checked before removal.
I'm thinking something in the trans is to tight, I Don't know .

 

[steve340]

It is hard to know but I can offer my experience for what it is worth.
Did you check the back face of the bellhousing? Mine was out a mile and that tips the gearbox.
Even though the clutch appears to check out I still would suspect the clutch or alignment over the gearbox.

 

[Dipstick]

Guys, the transmission is "ON THE BENCH".

 

[mopar 3 B]

Don't confuse those that can not read with technical stuff like its on the bench.