2nd gear crunch

[husker boxster]

There are DIY tutorials out there. Not a difficult project, with your abilities you'll not have trouble doing it. Top tip - remove the side entry port before draining all your fluid and then finding out you can't open the fill port.

However, I'm not holding out positive results for you. You're headed down the same path I took. Changed the trans fluid and it didn't help. I had a 3-2 downshift crunch, but basically the same issue as a 1-2 upshift - 2nd gear synchro issue.

I shipped my trans off to AZ for a $2K repair - $1300 for parts and $600 labor. Then a pic arrived of the ring & pinion with a chunk missing from a tooth. Add another $2K. Then an examination of the 3 & 4 synchros added another $2K. Now I'm w/in a $1K of a $7K reman. Cha-ching, cha-ching, cha-ching.

Hope you have better luck.

[jaykay]

In my mind just resistive/ crunch feeling is different from a crunch sound coming in on top of it.

Do you have an experienced / trust worthy Porsche specialist near you? I would have them investigate what you are feeling?

Investigate the cost vs benefit of the second gear detent; CMS shift arrester and synchro service against the recommendations of specialists/opinions

I put in a model 2nd gear detent to stave off problems sometime ago. Feel wise it gives a longer engagement path for rear gate positions, preventing "pop out". IIRC It did not smooth out the shift action and I don't believe it would help worn synchros.

Different fluids will affect synchronization but in these boxes I don't think there is much leeway for experimentation. I have Miller in there right now and would like to find the Devac or Mobil Lube PTX 75W-80 and see how that feels.

I have only worked with six speeds and they very stiff shifting transmissions. I also found double de clutch downshifts into second can really smooth things out you can do it going up too but of course it feels and is slower. I must say that can nail this completely on my old Jeep but not on the Boxster as the wonkier high clutch engagement always throws me off....I guess I have to get in there an pull the helper spring out.

[ike84]

Originally Posted by jaykay

In my mind just resistive/ crunch feeling is different from a crunch sound coming in on top of it.

Do you have an experienced / trust worthy Porsche specialist near you? I would have them investigate what you are feeling?

Investigate the cost vs benefit of the second gear detent; CMS shift arrester and synchro service against the recommendations of specialists/opinions

I put in a model 2nd gear detent to stave off problems sometime ago. Feel wise it gives a longer engagement path for rear gate positions, preventing "pop out". IIRC It did not smooth out the shift action and I don't believe it would help worn synchros.

I've never heard any noise coming from the transmission, bit my car is quite loud and I'm not sure I would hear it if it were subtle.

The closest p-car indys are 3 hrs away. I used to live right down the street from Pat Williams, boy do I miss those days lol.

That is my understanding of the 2md gear detent mod as well, that it helps prevent popping out of gear. I've never had that problem, but I had read a few posts that said that it fixed the crunch sensation while shifting.

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[ike84]

Originally Posted by husker boxster

There are DIY tutorials out there. Not a difficult project, with your abilities you'll not have trouble doing it. Top tip - remove the side entry port before draining all your fluid and then finding out you can't open the fill port.



However, I'm not holding out positive results for you. You're headed down the same path I took. Changed the trans fluid and it didn't help. I had a 3-2 downshift crunch, but basically the same issue as a 1-2 upshift - 2nd gear synchro issue.



I shipped my trans off to AZ for a $2K repair - $1300 for parts and $600 labor. Then a pic arrived of the ring & pinion with a chunk missing from a tooth. Add another $2K. Then an examination of the 3 & 4 synchros added another $2K. Now I'm w/in a $1K of a $7K reman. Cha-ching, cha-ching, cha-ching.



Hope you have better luck.

That's what I'm afraid of also. I have no reason to think that there will other problems other than to say that I'm sure there will be lol.

I was thinking about swapping in a used 6 speed. It seems that these are sturdier transmissions overall than the 01a 5 speeds. I think I would need new axles to go with it. I know the bolt pattern is different for the two, so I wonder if there are enough common holes that it will mount up.

Off to the forum archives I go...

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