Grinding in 2nd & 5th gear

[jst_4_kiks]

Hey members. Transmission shifting question for you all

On my 91 LX 5 speed, I can take off in 1st fine. Shift into 2nd below 2k rpms smoothly. above 2k rpms it grinds if try to shift quickly. if you shift smooth 1st, neutral, 2nd, it grinds a little. 2 to 3 to 4 are are fine. 4 to 5 grinds very little. i had to replace my clutch slave line (from fire wall accross from ds to ps to union just above trans). bleed the line for fluid. havnt replaced the transmission fluid yet. planning to later this week. honda oem mtf will be going in. car has been sitting for almost 5 years. hope this helps it out shifting. if not will try bleeding the line again.

also along the lines of mtf fluid use, have read some use a mix of oem mtf & redline mt-90, all mt-90, 75-90 synthetic, gm synchromesh, pennzoil fluid( cant remember which), etc. does any benifit gear change smoother or whatnot?

any help or opinions will be great. thanks

[JustSomeGuy]

Yeah, the the honda specified fluids in there and see what it does. If it doesn't help, you may be looking at messed up syncro's if im not mistaken. Although im not a tranny specialist im just speaking from past lessons learned and from what others have taught me.

[deevergote]

GM Synchromesh will help. I've used it when I was experiencing grinds (accelerated synchro wear caused by a Chrysler dealership putting super-thick gear oil in my transmission...) The new Honda synthetic MTF is just about as good.

If your gears are grinding, though... the synchros are shot. A good fluid will only help a little, and slow down the wear. It won't fix anything, and it won't keep the parts from continuing to wear out. You are buying a little more time at best.