Second gear syncro's

I recall seeing a post not too long ago that attributed this problem to a hydraulic pressure caused when gear oil trapped in the housing with the gear selector rod is compressed as the rod is pulled into the second gear position. There was mention of a way to relieve the pressure by drilling a precisely located vent hole. This would cure the hard cold shift into second but not a bad second gear synchro. Sorry but I don't have a picture of a synchro for you.

Andy

 

The hydraulic theory is hog wash. I rebuilt my gearbox last year and the only shift fork shaft that enters a blind hole is the 1st/rev one. And only in reverse. I drilled the hole that was suggested and low and behold, it went to the reverse shaft. The 1st to 3rd syncros are the same part number and 4th-5th being the same as one another. One theory, and its the only one that makes sense to me is the ratio spread from 1st to 2nd is greater than 4th to 5th. The spread can be great between 1st to 2nd but you never down shift to 1st until almost at a complete stop so 1st never dies. So, you are left with 2nd and 3rd. You always down shift to second and I think downshifting is harder on a syncro than an upshift so that leaves second dying a slow death.

 

For problems with second gear when cold, look at this link http://ferrarichat.com/forum/showthread.php?t=5656
In this tread there is another link to another older discussion.
Have fun.

Ciao

Eugenio