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> Synchro in 1st gear?
Gatornapper
post Nov 23 2021, 07:08 AM
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Please forgive me in advance for asking a stupid question:

Did the new/original 914 tranny have synchro in 1st gear? Got mine with 60k original miles and it did not, nor have I ever driven one that did have a synchro 1st.

But somewhere I read something that said synchro in 1st went out quickly - and then synchro in 2nd would go out.

I have no synchro in 1st, but if it existed originally, that alone wouid be worth my rebuilding the tranny. Maybe Dr. Evil will do another one of his rebuild sessions at Scotty Burnett's?

Synchro in 2nd has a mind of its own. 1st to 2nd - it works 60% of the time fine. 30%, I get a tiny crunch. 10%, I get a bad crunch. Tried everything - nothing I do seems to affect whether it will crunch or not.

Downshifts into 2nd are another thing. 60% of the time, downshifts are perfect. Like a new tranny. 40% of the time, they are a horrible crunch. No idea why. Yes - clutch pressed all the way down.

No problems with any other synchros, tho 3rd, coming from 2nd, takes some additional physical effort to get into gear for some reason.

TIA,

GN
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Shivers
post Nov 23 2021, 07:34 AM
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"The 901 transmission has a synchro-mesh mechanism which allows the gears to be shifted when the car and the transmission are spinning at different speeds. There are 6 main components used in 1st gear. These are the slider, shift fork, synchro ring and brake band, dog teeth, and 1st gear. "

I don't shift into 1st moving. If it is being stubborn, I shift into 2nd then slip it into 1st. 50 year old trans may need some love.

https://www.pelicanparts.com/techarticles/9...anny_repair.htm
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Gatornapper
post Nov 23 2021, 07:48 AM
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Wow. over 4 years as a 914'er and no one ever told me this. As I grew up driving stick with no synchro in 1st it was quite normal to me.

Thank you.

Now to figure when I can find time to rebuild tranny......will have to wait - 924 Turbo is my main focus now.

Will be so wonderful to drive my 914 with a synchro in 1st.........

GN

QUOTE(Shivers @ Nov 23 2021, 08:34 AM) *

"The 901 transmission has a synchro-mesh mechanism which allows the gears to be shifted when the car and the transmission are spinning at different speeds. There are 6 main components used in 1st gear. These are the slider, shift fork, synchro ring and brake band, dog teeth, and 1st gear. "

I don't shift into 1st moving. If it is being stubborn, I shift into 2nd then slip it into 1st. 50 year old trans may need some love.

https://www.pelicanparts.com/techarticles/9...anny_repair.htm
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Superhawk996
post Nov 23 2021, 08:10 AM
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QUOTE(Gatornapper @ Nov 23 2021, 08:48 AM) *

As I grew up driving stick with no synchro in 1st it was quite normal to me.



As a generalized statement, almost all transmissions since 70's have had syncrhronized 1st gear. Don't want to get into the age thing . . . (IMG:style_emoticons/default/smile.gif)

Not aiming this at you but over the course of my career, I've had the opportunity to drive with hundreds if not almost a thousand people including automotive journalists, most can't drive a manual transmission worth a (IMG:style_emoticons/default/stromberg.gif) even if they think they can. There's a reason so many manual transmissions have bad gear and/or fried clutches every 50K miles.

1st gear is only used for getting off the line. . . that's it.

Trying to shift from 2nd to 1st at anything other than a brisk walk is folly. Even modern transmissions prefer to be shifted from 2nd to 1st when just barely rolling before the stop, even with a synchronized 1st gear.
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Posts in this topic
Gatornapper   Synchro in 1st gear?   Nov 23 2021, 07:08 AM
Shivers   "The 901 transmission has a synchro-mesh mech...   Nov 23 2021, 07:34 AM
Gatornapper   Wow. over 4 years as a 914'er and no one ever...   Nov 23 2021, 07:48 AM
Superhawk996   As I grew up driving stick with no synchro in 1st...   Nov 23 2021, 08:10 AM
Gatornapper   I am usually in neutral at stoplights. I rarely s...   Nov 23 2021, 08:24 AM
Superhawk996   I am usually in neutral at stoplights. I rarely ...   Nov 23 2021, 08:45 AM
Gatornapper   SH - Known all these for many years, and I'm ...   Nov 23 2021, 11:35 AM
Superhawk996   Many of these transmissions are well past their pr...   Nov 23 2021, 07:46 AM
Gatornapper   Thank you. I replaced all shift linkage bushings ...   Nov 23 2021, 08:04 AM
BeatNavy   S'Hawk is much more experienced here than most...   Nov 23 2021, 08:49 AM
Gatornapper   Thanks Rob. Best thing for me would be to go to D...   Nov 23 2021, 11:39 AM
DRPHIL914   i get the habit of sitting in neutral, like you, m...   Nov 23 2021, 12:03 PM
Gatornapper   Phil - Wow. If you were at Scotty's a few ye...   Nov 23 2021, 08:52 PM
rfinegan   I just rebuild My #1 pack on my 901 here: http://w...   Nov 23 2021, 08:58 AM
Gatornapper   Thanks Robert! Now you've got me interest...   Nov 24 2021, 09:37 AM
Wew   Second the Dr. Evil DVD. I did my rebuild last ...   Nov 23 2021, 11:54 AM
Gatornapper   Thanks Gary - good advice. But won't be happe...   Nov 23 2021, 08:39 PM
Rand   Third to first. It will help you. It's like th...   Nov 23 2021, 08:48 PM
Rand   Third to first. It will help you. It's like th...   Nov 23 2021, 08:48 PM
Gatornapper   Rand - GREAT IDEA! Will do! Will try to...   Nov 24 2021, 09:29 AM
flyer86d   When we had our 71 914, we eventually lost 1st gea...   Nov 24 2021, 03:05 PM
Gatornapper   Charlie - Please quit reading my mind. I was thi...   Nov 24 2021, 07:53 PM
Gatornapper   Can anyone answer Charlie's question in Post #...   Nov 26 2021, 11:57 AM
DRPHIL914   Can anyone answer Charlie's question in Post ...   Nov 27 2021, 09:11 AM
Rand   And third to first? Yes, much nicer. You do need ...   Nov 26 2021, 09:12 PM
Gatornapper   Rand - I cannot imagine my linkage being any tigh...   Nov 27 2021, 09:14 AM
Shivers   Easy answer is yes. The whole cluster and intermit...   Nov 27 2021, 09:23 AM
Gatornapper   Shivers - Older = wiser. At least a bit. You so...   Nov 27 2021, 08:14 PM


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