Hard-@$$ 1st Gear

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BuddhistWitch
Posts: 117
Joined: Tue Dec 09, 2003 4:09 pm
Car: 85 Saab 900 Turbo

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I've had my 240 since december, and shifting was pretty good. But then for some reason, after I hadn't driven it for a week, it became extremely hard to shift into first, and a little bit for reverse too. I now have to double clutch all the time and sometimes gas before clutching.

And by the way, the transmission has only 7x,xxx miles on it, and the engine has about 2x that.

Can someone tell me what could be the problem, and what to do to fix it?


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Ligouri Rd
Posts: 449
Joined: Wed Oct 02, 2002 9:02 am
Car: '96 Nissan 240SX

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Is the problem trying to get into first from a stop or going back to first while slowing down? I had a similar problem with my S14 but I chalked it up to my inexperience driving standard. I know that both first and reverse are straight cut gears and have no synchros. So sometimes you have to get the gears to mesh in by putting it in second then move back to first or reverse. When I am slowing to a stop, around 2mph or so, I put a little pressure on first gear and it slips right in smoothly.

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Hijacker
Posts: 14373
Joined: Wed Aug 13, 2003 4:57 am
Car: '92 240sx Convertible
'94 F-150
Location: Fredericksburg, VA

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i have a small amount of issue with 1st, but I think it's because I need to check my transmission fluid.

I've never heard of first and reverse not having synchros before, but I could be wrong.

leper421
Posts: 375
Joined: Wed Sep 18, 2002 2:11 pm
Car: Current: 2011 370z
Previous: 2003 350z, 1991 240sx

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tenkawa_akito wrote:I've never heard of first and reverse not having synchros before, but I could be wrong.


I can tell you with out a doubt, they do not have synchros.

1995 240sx
Posts: 15
Joined: Sat Dec 06, 2003 1:04 pm

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I have the same prob with 1st it will just not go in untill the car is almost stoped and i have tried to match the revs and still cant

i have also heard of a guy with a 300zx with the same problem

does anyone have any sugestions to help this problem when trying to autocross bc once it is out of 1st the needs to stop to get it bakc in and that is jsut going to kill the time

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Ligouri Rd
Posts: 449
Joined: Wed Oct 02, 2002 9:02 am
Car: '96 Nissan 240SX

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Quote »does anyone have any sugestions to help this problem when trying to autocross bc once it is out of 1st the needs to stop to get it bakc in and that is jsut going to kill the time[/quote]I have dropped to first one time during a sharp corner on an autox course. I think I was going about 5 to 10 mph. It doesnt seem to go in but push slowly but fairly hard with the clutch all the way in and it worked. No grinding, no noise, just a slightly notchy feel...I gotta tell you though, once I got back on the gas I had so much torque I almost spun out.

240dreams
Posts: 595
Joined: Wed Nov 13, 2002 2:28 pm
Car: 240's

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can new gear oil fix this problem? i have the same issue. im think about upgrading to BG Synchro Shift. any ideas about what weight to use?

xxtrizz
Posts: 525
Joined: Wed Oct 22, 2003 11:47 pm
Car: Cars, computers

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No mine does this also the shifter wont go into first gear unless you are at the appropriate speed. You can however shove it into gear. But its like trying to push against a small blockade. But you can get it in. I think the reason they did this is a fail safe for anyone who is a bad driver on stick. THis way its ahrd as hell for you to jsut accidently slip it into first for no reason. Why would you go into first unless yor going 5 miles an hour anyways? THe low to red reaction for the gearing on the first gear is so fast if your still rolling plunk it into second gear.

Also About the reverse I dont know but I thought there was a synchro for reverse. Mine has a hard as hell time going into reverse. Even putting it into frist then reverse doesnt help. I have to pray and consult the bones of wisdom and wait for the car to accept that it needs to go into reverse to get out of the garage. The only thing that remedied this was putting it into 5th and then reverse a couple of times and that doesnt even work that well.

crzycav86
Posts: 3836
Joined: Tue Aug 05, 2003 1:28 pm
Car: 93 Nissan 240SX KAT

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According to the fsm, all of the gears have syncros except for reverse. It seems that the first gear syncro is junk. Nissan may have made it difficult to shift into first so you don't accidentally over-rev the engine.. or something. That will explain why you don't normally "grind" the gear when you shift in to first while the car is moving, unlike the grinding that occurs in reverse when the car is moving forward...

xxtrizz
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Joined: Wed Oct 22, 2003 11:47 pm
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You guys ever done that grinding in reverse while the car is rolling forward? man that was a sad day that I did that about shat myself when I did it. hahaha

marshun
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Joined: Fri Mar 05, 2004 8:20 am

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might need a change in the transmission oils.

xxtrizz
Posts: 525
Joined: Wed Oct 22, 2003 11:47 pm
Car: Cars, computers

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I took my car out today and was thinking to myself maybe everyone just tries to hard to shift into reverse? Such as myself? So anyways I was fooling aroudn and decided that I would try to shift into reverse very softly like a girl or something without much force. Just push it over to the right until i felt force then I would go and then push down on the stick to put it into reverse. Low and behold the thing fell right into place. So im thinking amybe alot of the problems we have with shifting into reverse is trying to hard to shift into it?

240dreams
Posts: 595
Joined: Wed Nov 13, 2002 2:28 pm
Car: 240's

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year that reverse grind is nasty. def not a good noise.

leper421
Posts: 375
Joined: Wed Sep 18, 2002 2:11 pm
Car: Current: 2011 370z
Previous: 2003 350z, 1991 240sx

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crzycav86 wrote: That will explain why you don't normally "grind" the gear when you shift in to first while the car is moving, unlike the grinding that occurs in reverse when the car is moving forward...


Mine grinds loudly and violently if I try to shift into first above ~7-10mph without me double clutching, even then it is hard to get in. That sounds to me that there is no synchro. Or is mine just extremely worn out?

BuddhistWitch
Posts: 117
Joined: Tue Dec 09, 2003 4:09 pm
Car: 85 Saab 900 Turbo

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Ok, so from what I gather it's just a Nissan thing. Because at first, when it was driven more often it worked fine. My guess was maybe it needs transmission fluid? Or a diff/better brand.

marshun
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marshun wrote:might need a change in the transmission oils.


redline is the bestest ever :D

crzycav86
Posts: 3836
Joined: Tue Aug 05, 2003 1:28 pm
Car: 93 Nissan 240SX KAT

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leper421 wrote:Mine grinds loudly and violently if I try to shift into first above ~7-10mph without me double clutching, even then it is hard to get in. That sounds to me that there is no synchro. Or is mine just extremely worn out?
Your syncro may be fine, it's just that Nissan gave us crappy 1st gear syncros. 7-10 miles per hour is a little bit too fast to be shifting into 1st anyway...

Chingon
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Car: 1991 and 1992 hatchbacks

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I don't think there's anyone got a 'nice" 1st in their 240. I have found out however, that if you push the stick as much to the left as you can, and kinda go into a diagonal towards you while shifting up does the trick rather well.

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p00t
Posts: 780
Joined: Thu Feb 13, 2003 2:42 pm

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i also do what chingon says and put pressure in a diagnol direction... it helps mucho. Also shifting into 2nd before first can help. first gear ratio is 3.2 (yikes!) its pretty much useless top speed 30 or so at redline... even on most auto x courses... 2nd is a pleasant 1.9 which is way more useful... 70-80 mph at redline i think?:confused:?

1st does have a syncro... actually 1st + 2nd share a syncro, as do 3rd & 4th. 5th has its own syncro. reverse has no syncro... roll backwards at 5mph and push it into reverse LOL gotta love that crunch :)

gear oil really isnt the issue here....nor are the syncros... going back to the original post, a possible culprit is your slave cylinder, if its not letting you release the clutch disc all the way it will grind, pop, or just be generally rougher than normal. It will also cause the clutch disc to wear alittle more than normal.

Check the slave cylinder boot and see if its wet with brake fluid... if so the seal is going out and the unit needs to be replaced. If the boot is perfectly dry you might just need to bleed the system.

good luck!


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