1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

clunk sound when shifting into 2nd

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Old 03-19-08, 03:33 PM
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clunk sound when shifting into 2nd

Sometimes when shifting into second i'll get a clunk when it goes in. It's only second gear, and it's not grinding. It only happens when im shifting fast into second. It goes in smooth if i'm just granny shifting though. Something to worry about? What do you guys think it is? I'm pretty sure I need a new pilot and throwout bearing, cause when idling sometimes it makes that one noise then stops when the clutch is depressed. Could that be part of the problem? I also have a 4 puck racing clutch. God bless
Old 03-19-08, 03:46 PM
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is it a clunk or a kerplunk?... cause, ya know, they're, like different.
Old 03-19-08, 03:49 PM
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lol, I think its more of the clunk.
Old 03-19-08, 07:43 PM
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Sounds like you have worn synchro's on second gear... Very common problem.

You can either change the Gear Box oil to a good sythenic like AmsOil or make up a batch of half Auto Trans Fluid/Half Gear Box Oil. It's worked for many over the years and has helped my gearbox which is very very tired

Meanwhile practice double declutching.
Double DeClutching
Old 03-19-08, 08:41 PM
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I have to change my tranny fluid soon too. I've tried that auto and gear oil method before and works great. I'll change it out soon and see what happens. I'll practice the shifting too. Thanks.
Old 03-19-08, 10:44 PM
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Pilot bearing. Little tiny bit of noise should be normal.
Old 03-20-08, 10:22 AM
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Originally Posted by glewsRx
is it a clunk or a kerplunk?... cause, ya know, they're, like different.
Yep. Kerplunk equals bad news. If you hear a kerplunk, that means your tranny fell out when you were crossing that bridge and landed in the river below.
Old 03-20-08, 10:32 AM
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Originally Posted by Vashner
Pilot bearing. Little tiny bit of noise should be normal.
i've got a very similar noise except its just really bad, like everywhere. but i own an fc. i've not bothered to change my pilot bearing as i hear its a pita without that special tool. do you really think it could be a pilot bearing? im pretty positive my input shaft is the culprit and was thinking of just dropping in another tranny in there bc the noise is driving me crazy. i dont want to go get another tranny if its only a pilot bearing. thanks.
Old 03-20-08, 03:19 PM
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^^There's a 2nd gen forum you know right? Well, I have had the tranny fall out of place before. The tranny mount bolt on the exhaust side fell out once and my complete tranny tilted towards the exhaust. I would have to hold the tranny in 2nd, 4th, and 5th gears for it not to pop back into nuetral. Got another bolt in there and it's fine now. It is definitely a clunk when shifting though. Would the pilot bearing have to do anything with this problem? I would think the sychro is messed up in 2nd?
Old 03-21-08, 05:56 PM
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Originally Posted by twinkletoes
^^There's a 2nd gen forum you know right? Well, I have had the tranny fall out of place before. The tranny mount bolt on the exhaust side fell out once and my complete tranny tilted towards the exhaust. I would have to hold the tranny in 2nd, 4th, and 5th gears for it not to pop back into nuetral. Got another bolt in there and it's fine now. It is definitely a clunk when shifting though. Would the pilot bearing have to do anything with this problem? I would think the sychro is messed up in 2nd?
haha yes i kno theres a second gen section. it was just this thread was at the top so it was listed on the main page and caught my attention.
Old 03-21-08, 09:23 PM
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Alright cool lol. Nothing against you^.
Old 03-22-08, 02:43 AM
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Old 03-22-08, 03:55 AM
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Originally Posted by Retro Racer
Sounds like you have worn synchro's on second gear... Very common problem.

You can either change the Gear Box oil to a good sythenic like AmsOil or make up a batch of half Auto Trans Fluid/Half Gear Box Oil. It's worked for many over the years and has helped my gearbox which is very very tired

Meanwhile practice double declutching.
Double DeClutching
???? I thought this was common knowledge?! This is how I and all my friends learned to drive. Do most people seriously kill it when down shifting? lol I was expecting to learn something, but in reality, I'm shocked to know that someone actually took the time to write all that out.
Old 03-22-08, 04:07 AM
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I know how to downshift perfectly, I just do it a little differently.
Old 03-25-08, 11:34 AM
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Old 03-26-08, 04:00 PM
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mine does the same thing but only the first time i shift or if it is cold
Old 03-26-08, 05:18 PM
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Mine had the clunk when up shifting into 2nd and it grinded like a biatch when down shifting into 2nd. Replaced the tranny, that fixed it!
Old 03-27-08, 05:50 PM
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I'm pretty sure the tranny isn't bad cause it shifts beautifully when granny shifting. I'm replacing all the oils in the car today and going to put royal purple in the tranny and see how that works.
Old 03-27-08, 06:03 PM
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ya i have the same problem...syncro is probably snapped
Old 03-27-08, 07:45 PM
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What condition is your tranny mount in Twinkle?
Old 03-28-08, 11:54 AM
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The mount looks pretty good from yesterday when I changed all the fluids. It was dark though. I'll check again. I put the 75w90 royal purple gear oil in and so far I haven't had the clunk shifting into second. I've been driving it pretty spirited too. We'll see as time goes by.
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