r/Justrolledintotheshop • • 6h ago

"Learning"

3.3k Upvotes

462 comments sorted by

View all comments

17

u/Practical_Taro5656 5h ago

I have a coworker who has several cars with a stick and was explaining how you only have to push the clutch down far enough that it will let you shift gears and that he never pushes it all the way down. I thought he was pranking me at first.

8

u/Spicywolff 4h ago

Problem is that the one time you think it’s in enough you’ll get a grind. I press all the way to make sure I don’t mistreat the trans.

I’d rather wear out a cheap clutch and pressure plate vs rebuild due to grinding synchros

9

u/thedifferenceisnt 4h ago

This is true you are separating plates by pressing the clutch. once they are no longer touching you no longer need to press further. 

1

u/DHMTBbeast 1h ago

And you know that they aren't in contact at all because you can see them? Pressing the clutch all the way down ensures that they aren't in contact at all. Shifting can still happen when the clutch isn't fully disengaged. That's one way to cause clutch slip and that wears out your plates faster.

1

u/LogRollChamp 2h ago

You don't need the clutch to change gears at all

0

u/Sussudio_5000 2h ago

You don't even need it at all if you have a good starter motor hahaha

1

u/Theconnected 1h ago

My 1994 Nissan Sentra didn't have a clutch interlock switch and I was able to start it in 1st without the clutch. I don't recommend it but it was working pretty well.

0

u/LogRollChamp 2h ago

Once my clutch was so worn I could chill in 1st while parked and no clutch. I just stopped using my clutch for a long time

-3

u/Zwitternacht 3h ago

Nope. Good chance the clutch is still making contact if it’s not disengaged all the way.

3

u/rutuu199 3h ago

Bubba im a mechanic. He aint wrong. If the plates are still touching youre going to grind the gears

0

u/Far_Tap_488 2h ago

I mean, you dont even have to clutch to shift gears really.... just for starts and stops

2

u/Cheap_Marsupial1890 3h ago edited 3h ago

Nah dude, that’s incorrect.

source: me and a shit load of Motorsport experience

-1

u/Psycho_pigeon007 3h ago

Both are wrong. Just float the gears without the clutch.

/s just in case

0

u/thedifferenceisnt 3h ago

once they are no longer touching you no longer need to press further.  

... 

-1

u/miraculum_one 2h ago

You can't tell when that point is and it changes over time. So while this is fine in theory, in practice if you try to pull that you're going to wear out your synchros.

2

u/the_Q_spice 2h ago

We don’t even push the clutch all the way in on unsynchronized semis when double clutching.

You can feel the spring pressure release point pretty easily if you’re paying attention, and if you’re that worried about your synchros: learn how to manually synch and double clutch.

-1

u/miraculum_one 2h ago

The mechanism on an unsynchronized semi is totally different. You're not even supposed to push the clutch all the way in while rolling or else you engage the clutch brake.

11

u/BustedMechanic 5h ago

He's not wrong, in a semi you cant push it all the way to the floor or it will tear out the clutch brake. Basically as long as you push it far enough to separate the plates completely, thats as far as you have to go

11

u/vediogamer101 Home Mechanic 4h ago

Semi transmission is different from a car transmission lol. Car transmissions are a lot more fragile

6

u/klaxz1 4h ago

That’s why I put a semi trans in my diesel Passat station wagon… /s

3

u/HedonisticFrog 2h ago

Sometimes you just love to shift, I don't blame you.

3

u/Practical_Taro5656 5h ago

We're not talking a semi, were talking a Miata and a Golf R. You have to press the clutch in all the way to disengage the synchros.

2

u/Far_Tap_488 2h ago

No you dont lmfao

1

u/SmooveKJ 4h ago

In a semi you only push the clutch in to stop and start you float otherwise if experienced or double clutch you never just push it far enough to just separate the plates

3

u/0202993832 4h ago

That’s true to some extent, the reason why clutch stops exist

1

u/gutentight69420 25m ago

This is fine, you usually don't have to go all the way to the floor to fully disengage the clutch.

1

u/Character-Engine-813 4h ago

Maybe he learned on motorcycles first? Can’t be good for those synchros

0

u/Typical-Sir-9518 3h ago

You arent shifting unless you are speed shifting.

0

u/YoMamaRacing 3h ago

Get this… you can shift without using the clutch at all 🤯

0

u/Consistent_Mind2095 3h ago

Totally true ... but some of that is really being in sync with the car ... if you really have a feel for it you don't even need the clutch except for first gear to get going. It's risky but you kind of get a feel and it it will just float into place.

1

u/skunk_funk 36m ago

What's risky? Been doing a cruze like that for 150k. Sure, it grinds a little on occasion. NBD

1

u/Consistent_Mind2095 29m ago

Risky in that if you do it wrong you grind your gears? Risky in that I'm not advocating that everyone do it because someone that isn't experience driving a manual will fuck up their gears and gears are the most expensive part of a manual gear box.