TKO 600 Grinding.

[Excaliber]

Brent, of course 5th would seem to be the ideal gear before choosing reverse, but I've found that to often 5th may be hard to shift into while sitting. It depends on where the gears have to come to rest. As opposed to 4th, which WILL go in smooth every time. 4th does seem a little ackward at first, but I don't even think about it anymore. 4th, then reverse, it's almost natural, because I don't want to wait for the gears to stop turning (I hate to wait).

Jim (jhv) if it grinds in reverse at ANY time AFTER you either: 1. waited (long enough) for the gears to stop spinning OR 2. shifted into 4th or 5th to stop them from spinning then there is only one other possible cause; The clutch and/or pilot bearing are not fully releasing the trans input shaft and the gears are still turning.

The only reason you don't sense the clutch and/or pilot bearing not fully releasing when you shift into 1st or any other gear is because of the synchromesh on those gears. They will "mask" the slight turning of the gears, where reverse won't.

Does not matter if it's only occasionally, the fact remains, "occasionally" the clutch and/or pilot bearing are not releasing. No way is this a fault of the transmission itself, by the way...

[blykins]

Yep, exactly.

If you shove the clutch in and give the transmission enough time to stop turning, then go to reverse.....if it still grinds it simply means the transmission can't stop turning.

[Wild Card 289]

My 3000 mile TKO600 5 speed does the same. Sometimes its good, sometimes it grinds. Hot and cold. Tried all the pre-selecting of forward gears, and never know what I will get. The fact that it sometimes selects reverse smoothly makes it all the more confusing. I´ve tried pumping the clutch several times to see to let the release bearing get a different take on the clutch fingers, but with no success either.
And it often makes you look like you can´t operate a stick shift just when you least need it!

[jhv48]

Originally Posted by Wild Card 289

My 3000 mile TKO600 5 speed does the same. Sometimes its good, sometimes it grinds. Hot and cold. Tried all the pre-selecting of forward gears, and never know what I will get. The fact that it sometimes selects reverse smoothly makes it all the more confusing. I´ve tried pumping the clutch several times to see to let the release bearing get a different take on the clutch fingers, but with no success either.
And it often makes you look like you can´t operate a stick shift just when you least need it!

That's mine in a nutshell.

Drove it 60 miles to the installer to pull the trans for a fourth time. Got there, he jumps in the car and slips the trans smoothly into reverse. Makes me look like an idiot. Over and over he slips it in and out of reverse without a sign of a grind. I looked at him and said f--k it! I'll bring it back when something breaks!

[iwantacobra427]

Originally Posted by jhv48

That's mine in a nutshell.

Drove it 60 miles to the installer to pull the trans for a fourth time. Got there, he jumps in the car and slips the trans smoothly into reverse. Makes me look like an idiot. Over and over he slips it in and out of reverse without a sign of a grind. I looked at him and said f--k it! I'll bring it back when something breaks!

Try shifting into third or second before shifting into reverse. If that doesn't help and you're running a hydraulic clutch.. I'd trying bleeding it..

[jhv48]

Well, here is the latest in the transmission saga.

The grinding in reverse steadily has gotten worse (no matter how many forward gears you engage before shifting into reverse or how long you wait) and putting the trans in any forward gear at a stop requires real muscle (no grinding, just a firm hard push to engage). Trans shifts beautifully either up or down once moving. It also shifts effortlessly when the engine is off and the clutch is disengaged.

The car is at a different shop having the trans removed once again.

I am going to use a pilot bearing this time instead of a bushing and see if there is any improvement.

Will let you know after the parts are removed if there is any obvious signs of wear.

[Gaz64]

Jim,

Can I assume if while leaning on the shifter and you turn the engine off, the box drops into gear as the engine stops?

If that is the case, you most likely have a dragging clutch or a dragging spigot bearing.

Either way the input shaft is not coming to rest as easily as it should.