The Ford Barn

azandy · 04-09-2015, 01:42 PM

I have a 50 Ford car with a stock 3 speed overdrive transmission. It grinds trying to shift into 2nd gear. I've been told that the syncros are the problem. To me this stuff dosen't look too bad. I'm interested in hearing any opinions on the quality of these parts. Should I replace them anyway or what else could be my problem.
Thanks,
Andy

Ross F-1 · 04-09-2015, 04:04 PM

Good info here: https://www.fordbarn.com/forum/showthread.php?t=163599

supereal · 04-09-2015, 04:23 PM

Be sure your clutch is adjusted with the correct pedal free play. If the gears grind after holding the clutch pedal down for at least a minute, the pilot bearing in the flywheel may be seizing the input shaft of the transmission, or the pressure plate is warped due to incorrect tightening to the flywheel.

Mart · 04-09-2015, 04:31 PM

The parts look ok at first glance. If you look at the post by MacVP on synchros you should see how the synchroniser ring should sit on the cone of the gear. From your pics it is impossible to judge how it sits.

Mart.

azandy · 04-09-2015, 06:18 PM

If it makes a difference, the car is a daily driver and it ran great for the last 5,ooo miles and then last week it started making noise.

super flat · 04-09-2015, 06:26 PM

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You have to check the synchro on the taper of the gear to see how far it goes on the taper. If it goes to far it will not stop the gear. Gary

JSeery · 04-09-2015, 07:26 PM

There was a resent article on synchros that pointed out they can look fine (and sometimes even measure out fine) and still not work. It has to be able to grab and hold the gear in order to synchronize the speeds and it has to do it almost instantly. So, it doesn't take much for there to be an issue.

Terry,OH · 04-10-2015, 06:43 AM

Also check the free play of the second gear on the shaft as well as other clearance. excessive play can lead to problems.

sidevalve8ba · 04-10-2015, 08:22 AM

Check out this entry. It may answer your question.

https://www.fordbarn.com/forum/showthread.php?t=163599

flathead4rd · 04-10-2015, 10:20 AM

What kind of gear oil are you using inthe trans? If you changed to one of the newer ones, that might be your problem. Also check the inside of the brass synchros for wear.

azandy · 04-11-2015, 06:37 PM

Now that I've got everything apart I'm going to replace the synchro stuff. I had been using the wrong gear lube, gonna switch to GL1 and check clutch pedal play and shift linkage for wear. Thank you Ford Barners !!!
Azandy

04-09-2015, 04:04 PM	#2
Ross F-1 Senior Member Join Date: Nov 2010 Location: NM Posts: 2,438	Re: Transmission woes Good info here: https://www.fordbarn.com/forum/showthread.php?t=163599 __________________ '52 F-1, EAB flathead

04-09-2015, 04:23 PM	#3
supereal Senior Member Join Date: Jul 2014 Location: Iowa Posts: 1,634	Re: Transmission woes Be sure your clutch is adjusted with the correct pedal free play. If the gears grind after holding the clutch pedal down for at least a minute, the pilot bearing in the flywheel may be seizing the input shaft of the transmission, or the pressure plate is warped due to incorrect tightening to the flywheel.

04-09-2015, 04:31 PM	#4
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 8,755	Re: Transmission woes The parts look ok at first glance. If you look at the post by MacVP on synchros you should see how the synchroniser ring should sit on the cone of the gear. From your pics it is impossible to judge how it sits. Mart.

04-09-2015, 06:18 PM	#5
azandy Member Join Date: Jun 2010 Location: Glendale, Arizona Posts: 31	Re: Transmission woes If it makes a difference, the car is a daily driver and it ran great for the last 5,ooo miles and then last week it started making noise.

04-09-2015, 06:26 PM	#6
super flat Senior Member Join Date: Jan 2011 Location: west bend wi Posts: 314	Re: Transmission woes Sponsored Links (Register now to hide all advertisements) You have to check the synchro on the taper of the gear to see how far it goes on the taper. If it goes to far it will not stop the gear. Gary __________________ I am usually relatively happy------Gary

04-09-2015, 07:26 PM	#7
JSeery Member Emeritus Join Date: Nov 2012 Location: Wichita KS Posts: 16,132	Re: Transmission woes There was a resent article on synchros that pointed out they can look fine (and sometimes even measure out fine) and still not work. It has to be able to grab and hold the gear in order to synchronize the speeds and it has to do it almost instantly. So, it doesn't take much for there to be an issue.

04-10-2015, 06:43 AM	#8
Terry,OH Senior Member Join Date: May 2010 Posts: 4,751	Re: Transmission woes Also check the free play of the second gear on the shaft as well as other clearance. excessive play can lead to problems.

04-10-2015, 08:22 AM	#9
sidevalve8ba Senior Member Join Date: May 2013 Location: Harrisonburg, VA Posts: 842	Re: Transmission woes Check out this entry. It may answer your question. https://www.fordbarn.com/forum/showthread.php?t=163599 __________________ The more I learn about new automobiles, the more I value my old ones.

04-10-2015, 10:20 AM	#10
flathead4rd Senior Member Join Date: May 2010 Location: Michigan Posts: 505	Re: Transmission woes What kind of gear oil are you using inthe trans? If you changed to one of the newer ones, that might be your problem. Also check the inside of the brass synchros for wear.

04-11-2015, 06:37 PM	#11
azandy Member Join Date: Jun 2010 Location: Glendale, Arizona Posts: 31	Re: Transmission woes Now that I've got everything apart I'm going to replace the synchro stuff. I had been using the wrong gear lube, gonna switch to GL1 and check clutch pedal play and shift linkage for wear. Thank you Ford Barners !!! Azandy