1st gear grind...

[Mr_Sileighty]

Hi everyone. I have a '92 240SX with stock KA and tranny. Whenever I shift into 1st too quickly(ie: sitting at a red light then quickly putting it in 1st when it turns green), it grinds. Now, when I slide it in slowly(no pun intended) I get no problem from it. I noticed it started happening when my clutch got loose. I bled the master cylinder but no luck with the pedal. So, I adjusted the clutch pedal to where it actually engages, but still having the same issue with first. I don't have any problems with any other gears at all. Any thoughts on what it might be? Thanks in advance!

[Ka-t in progress]

Sounds like a blocking ring or possibly a synchro going bad. What fluid are u using?

[Mr_Sileighty]

Tranny fluid? Haven't had the chance to refill or change out the fluid so I don't know.
Clutch fluid, I used DOT 3 brake fluid to top off after bleeding out the master cylinder.

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[ultimateirving]

Tranny fluid? Haven't had the chance to refill or change out the fluid so I don't know.
Clutch fluid, I used DOT 3 brake fluid to top off after bleeding out the master cylinder.

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Search Subaru cocktail.
Can use that to help with tranny grinds.
Like the poster above said sounds like a bad synchro.

Feeling generous here is a link :
http://www.city-data.com/forum/automotive/1291966-uncle-scottys-cocktail-cures-your-manual.html

[brndck]

Red line mt90 is the shit for Nissan trans. Everyone should be running it. FRSport stocks it in 5qt jugs.

[Primo's Silvia]

Mt90 gets the tranny all fuzzy and warm inside lol
Yea my tranny sometimes doesnt enter 1st i have to clutch up and down abit to get it in -.-

[Mr_Sileighty]

Thanks for your help guys. Very helpful indeed.

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[JF_OverBoosted]

Pretty much what everyone said.
Fluid and or synchros are going out.

[Legend1515]

Having same issue but 1st and reverse don't have syncro right?