Last weekend I was cruising with my R on 5th gear. When I decided to put it in 4th gear it didnt want to engage. This was tried at about 4000 RPM. If you take the gear stick a but further up (to the 3rd gear) and then to 4th it will engage with no problems.

Downshifting from 5th to 3rd works perfectly even with high rpms . Even from 5th to 2nd works perfect.

Shifting from 3rd to 4th gear at 9000RPM is possible and no grinds. The only synchro I have a problem with is the 3rd gear which sometimes grinds when shifting at high RPMS.

Could it be the 3rd gear synchro problem is affecting my downshift from 5th to 4th ?

EDIT : My R has about 18K miles on it and tranny fluid was changed about 5k miles ago.

 

im haveing this exact same problem. from my searching around and talking to a couple tranny places we sorta have it narrowed down to the the sleeve that slides over the syncros(the sleeve the shift fork moves). but if it the same problem its a solid feel when it stops,like its not even getting to the sycros.

 

Bent shifter fork maybe ?

What do you think guys ?

 

No has any idea? Come on tranny experts !

 

Anyone please ?

 

Help us guys........


Somebody knows ....

 

dude its your Synchros. I had the same problem down shifting into 3rd

 

ive got a b16 tranny, and have a simular problem,

i cant down shift from 4th to 3rd at high rpms, i can shift from 3rd to 4th at around 8200 all day with no grinds, but the downshift is killin me..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by athoughts &raquo;</TD></TR><TR><TD CLASS="quote">ive got a b16 tranny, and have a simular problem,

i cant down shift from 4th to 3rd at high rpms, i can shift from 3rd to 4th at around 8200 all day with no grinds, but the downshift is killin me..
</TD></TR></TABLE>
exactly downshifts usually mean synchros

 

thanks guys !

any other thoughts please........