Grinding In Gear Changes?
 

I'm experiencing a Grinding/Crunch noise from 2nd to 3rd gear for the first time.

What could it be I wonder?

It could be a lot of things: worn shift cables, clutch not disengaging completely, worn synchos, etc.

Can you tell us more details - under what circumstances does it happen? Every shift? Only when the engine is cold? Did this happen all of a sudden or has it been getting gradually worse? Does it still happen if you double clutch? The more detail you can provide, the better chance of getting good feedback.

Every few shifts
It happens when the Engine is warm
Today is the first day
I don't double clutch

UPDATE

I just took the car out for a test drive really focusing on making sure the clutch is fully applied before shifting in to 3rd gear and the problem seems to have ceased.

It could still be a warning the transmission fluid might be low?
Or the synchros or something else is worn??

Thanks

If it were me, I'd go ahead and change out the transmission fluid if it hasn't been done under your ownership or within the past 30k miles. It's easy, relatively cheap to do yourself and you'll likely be surprised at the difference in shifting feel.

Pelican Technical Article: Boxster Differential / Manual Boxster Transmission Fluid Change - 986 / 987

How do you jack the car front and back with one jack?

You don't - you need a hydraulic jack to raise the car to the appropriate height and then use jack stands to support the vehicle before you venture underneath.
Once you have the jack / stands / sockets its easy to change the gearbox fluid - but if you don't have the right equipment its very difficult to do it correctly.
IF you are serious about performing your own maintenance, first you must invest in the correct tools, which over the long term is a lot cheaper than getting a workshop to do it .....

You will need 4 jack stands for sure, believe me they will pay for themselves after one or two uses. Here is a thread where you may find some answers:

http://986forum.com/forums/diy-project-guides/10215-jackin-box-how.html

You also may want to spend a little time looking over the DIY section of this website, plenty of info from those who've done it before there. :cheers: