2nd to 3rd gear high RPM "grissle"/"clunk"?

[Kraken]

Quite recently, this has started happening in my Leon FR 1.8 Manual Petrol. At high rpm, from 2nd to 3rd gear when shifting quickly it will sometimes sound like it's grinding, not REALLY loud, it's more of grissley clunk than a "didn't press the clutch down" grind. I am fully depressing the clutch, of course.

It sounds to me that the clutch is not disengaging quick enough? Or is not fully disingaging any gear? At idle, when warm, there is very slight sound different between when you press the clutch all the way down (sounds slightly smoother) to when you release the clutch fully back up (sounds like it's very slighty rubbing on something, a ligh, grissley sort of sound) which is the first thing that set off alarms to me. Is this normal? Is the clutch rubbing against the plates loosely? What's going on?

Car has only done 8300 miles from factory new, I certainly don't "rag it" all the time, but must admit 2nd to 3rd is very common and during spirited miles it's certainly what is happening the most and this "throw" from 2nd to 3rd producing this sound seems bizzare on such a young car (barely 9 months old).

Will be taking it in on Tuesday (Unit 20) regardless as i'm having some parts fitted, so will get them to look at it in more detail, well under warranty so shouldn't have to worry about silly replacement costs if needed.

Just wondered what users here may think it could be? Some people seem to suggest starting with a performance transmission oil change so perhaps that is all it needs, but would have no clue.

 

[Springrollz]

It sounds like the clutch delay valve doing its thing to me

 

[Kraken]

Doing what thing in regards to which issue, the idle grissle or the clunk from 2nd to 3rd? It doesn't feel right, and with remap coming soon as well as other performance mods I want to make sure the clutch or whatever else is able to handle the speed.

 

[Kraken]

An update on this.

Ignore the other points about the clutch, as I got it looked at, no issues.

However, the "grind" from 2nd to 3rd is starting to pop up more now.

I've only done 10k miles in it, had it nearly a year, no way it could be syncro already could it?

It's started to grind from 2nd to 3rd even with less aggressive, semi normal shifting, and it's ONLY 2nd to 3rd. I can speed shift every other gear no problem if I need to, but 2nd to 3rd is seemingly getting LESS happy each and every time, slow is fine, normal is fine 99% of the time, but anything more "spirited" and it simply notches/mildy grinds into 3rd.

As before, it's not loud, it's not a early release of clutch grind or none depression noise, it's a muffled grind which is the best way I could describe it.

I'll be having my service soon (1st one) so perhaps i could mention it then, but for now, it's the only thing concerning me. Any more ideas from anyone?

 

[kazand]

An update on this.

Ignore the other points about the clutch, as I got it looked at, no issues.

However, the "grind" from 2nd to 3rd is starting to pop up more now.

I've only done 10k miles in it, had it nearly a year, no way it could be syncro already could it?

It's started to grind from 2nd to 3rd even with less aggressive, semi normal shifting, and it's ONLY 2nd to 3rd. I can speed shift every other gear no problem if I need to, but 2nd to 3rd is seemingly getting LESS happy each and every time, slow is fine, normal is fine 99% of the time, but anything more "spirited" and it simply notches/mildy grinds into 3rd.

As before, it's not loud, it's not a early release of clutch grind or none depression noise, it's a muffled grind which is the best way I could describe it.

I'll be having my service soon (1st one) so perhaps i could mention it then, but for now, it's the only thing concerning me. Any more ideas from anyone?

As you say, the fact it is only happening between 2nd & 3rd points to something other than the clutch. My first call would be the gear linkage, not familiar with the current set up but have had issues in the past with selectors. Worst case scenario - it is the synchromesh on 3rd, but I'd be surprised if it was.
Does it make any difference if the 'box is warm or not? I've found both this and previous VAG boxes slightly notchy when cold but seem to free up once warm.
Post how you get on, and Good Luck!
PS I would definitely mention it on the service and make sure they log it.

 

[boggle]

On my mk2 cupra i had and a simular problem. The issues were the rubber bushes on the selctectors cables, the top nut on the selctor shaft being slightly lose and the return valve..

I repalced the bushes with 42dd bushes. Best mod i did to the mk2 tbh

 

[Red ibiza]

Have you had a remap on it yet?

 

[Kraken]

Thanks Kaz, I'll keep an eye on it. No seemingly no difference in hot or cold, however, what I have noticed is "taking more time" to fully depress the clutch between 2nd and 3rd seems to help, way home tonight, no issue or occurence despite some heavily spirited driving. However, if I plan to get a short shifter in the future, i worry about regardless of clutch depression that this sort of mod would exacerbate this issue even more if the car is seemingly unhappy with "quick" shifts into 3rd.

I'll deffo make sure they take a look at first service. Gear linkage is good shout though, as sometimes, i do really have issues getting it into reverse, sometimes even completly MISSING gears when i know for certain i'm not being a dumb cack handed moron lol, that's only been super rare though but pretty awkward to happen when you are pulling away/overtaking to miss a sodding gear because the 2nd to 3rd either misses, catches, grinds or catches between the links. Guys at Unit20 reckon there is nothing at all wrong with the tranmission or gear stick saying the throws are very nice and tight and the gearbox has a good connection through the gears, but on the move...something is deffo going on, the reverse thing can be a pain in the arse sometimes, say maybe 1/4 cold starts it won't go in.

@boggle

Hmm really, may be worth a look if the issue persists past service.

@Red

No defintely not yet, besides the kn filter and the revo turbo muffler delete, performance wise it's stock, perhaps maybe a few extra horses and torques with those two combined mods, 2 or 3 at most i'd assume.

 

[BenN]

Hey, did you ever get to the bottom of this? Ive a 2016 Cupra 290 with manual transmission, and im experiencing what you describe but from 1st to second, but coincidentally only at higher revs. I can have a perfect shift, but with the clutch fully depressed when shifting into second i sometimes feel a 'kick' back up the gear stick when entering second. I sometimes get this going into reverse from a standstill too.

I have found that bringing the revs up whilst changing can prevent this though.

Surely the clutch delay valve cant be causing this, as i'd of thought it would happen when shifting into different gears?