T5 Grinding Reverse and at times First Reply #15 – August 21, 2012, 09:56:39 PM Every manual transmission built after app1960 has a synchro assembly for every forward gear as i can remember. Other than some GRANNY first gears in some trucks with a new process tranny ETC!!! Now a days even reverse is synchronized. All my 6 SPEEDER cars have every gear synchronized even reverse!!!NOTE Gears in modern transmissions are constantly engaged. Years ago non synchrowed gears were selected by moving gears in and out of each other. Today gear changes are accomplished by energizer teeth on gears tgat are always engaged. Hence they are synchronized!!Here is an example of a gear that is a NON SYNCHRO UNIT AND A SLIDER. They grind.Here is a MD from a MUNCIE M20 that is SHOT!!! You can see the energizing teeth are gone and chipped off. This tranny had many missed shifts. This MD is shot and will be replaced along with all the other forward gears. . First gear is normally not messed up in a manual tranny. Reason being normally no one power shifts in to first gear??? I am converting this tranny to a wide ratio M22 for a customer. So all the gears will be replaced. Along with the synchro assemblies dogs and cluster gear and cluster main shaft. Thanks Quote Selected
T5 Grinding Reverse and at times First Reply #16 – August 21, 2012, 10:28:36 PM Good article on how to rebuild one:http://www.pomofookieracing.com/tech/T5Rebuild2002.pdfI know Chris and he is the T-5 guru here in Houston.Darren Quote Selected
T5 Grinding Reverse and at times First Reply #17 – August 22, 2012, 06:10:30 AM Blocker RingsWhile the original blocker rings (synchro rings) were made of brass, the World Class units received steel rings that were lined for gears 1-4. The blocker rings for gears 1 and 2 became 3-piece sets with an inner and outer cone made of steel. These linings have been called "composite", "paper", and even "fabric." For simplicity I will use the term "composite." The blocker ring for fifth gear has remained with the original brass design throughout. The UP dated world class had many differences but to my knowledge no T5 had a non synchronized FIFTH GEAR. That makes no sense to me. You can see in the photo the energizing teeth and the blocking ring in the early verses late unit. Clearly shows a synchronized gear setup on both. I am not that friendly with the T5 units as they are way to weak for my applications. At 305 FT LBS of torque the T5 is not suited for anything we build. They are to weak. Just saying!!! Quote Selected
T5 Grinding Reverse and at times First Reply #18 – August 22, 2012, 07:10:31 AM Aerocoupe, I think you're missing the point. The point is that reverse is a non-synchronized spur gear, which is why it can be hard to engage and then noisy when you're backing up. Quote Selected
T5 Grinding Reverse and at times First Reply #19 – August 22, 2012, 09:21:51 AM Yeah, actually you are 100% correct. I was pleading my case that 5th was synchronized and the discussion was if reverse was or not. I gotta pay more attention...Anyhow, I called Hanlon Motorsports and in mid-92 they made a "half ass" attempt at making reverse synchronized by adding and extra blocker and cone ring which will stop the cluster in an effort to stop the noise you hear when shifting into reverse. All it did was remove the noise when going into reverse and it is still not synchronized. The guy said that you can easily tell if the T-5 has this option by looking at the reverse light switch on the driver side of the transmission. If it has a bolt or pin at the 5 o'clock position from the reverse light switch then it has this modification. The T-5 I have has this option which is why I was on my soap box. I do apologize for my confusion.Darren Quote Selected
T5 Grinding Reverse and at times First Reply #20 – August 22, 2012, 07:16:20 PM Anyone that grinds REVERSE in any non synched transmission clearly should be driving an AUTOMATIC CAR!!! Their is no reason to grind a non synchronized reverse gear or for that matter any transmission that is not fully synchronized. What would you guys have dun in the OLD DAYS ON NON SYNCHRONIZED FIRST GEARS. Quote Selected
T5 Grinding Reverse and at times First Reply #21 – August 22, 2012, 08:03:52 PM We would have been double-clutching. Quote Selected
T5 Grinding Reverse and at times First Reply #22 – August 23, 2012, 06:28:49 AM NO NO NO you use another gear that is synchronized before selecting FIRST GEAR. HOW CAN YOU DOUBLE CLUTCH IN TO FIRST GEAR FROM A STOP ????????????? WHEEEEEEEEEEEEEEEEEE Quote Selected
T5 Grinding Reverse and at times First Reply #23 – August 24, 2012, 04:46:12 AM Quote from: TOM Renzo;396490NO NO NO you use another gear that is synchronized before selecting FIRST GEAR. HOW CAN YOU DOUBLE CLUTCH IN TO FIRST GEAR FROM A STOP ????????????? WHEEEEEEEEEEEEEEEEEEJust push the pedal in twice.lol Or install a clutch brake, I know they don't make them for cars. I think. Quote Selected
T5 Grinding Reverse and at times First Reply #24 – August 24, 2012, 09:33:21 AM Those clutch brakes are NUTS. My heavy duty guys use them in like the MACKS. Most often they only use the clutch for first. Then no clutch after that. Quote Selected
T5 Grinding Reverse and at times First Reply #25 – September 01, 2012, 08:34:45 AM Well, I didn't do anything new from last time I drove my car but this past week I had to get my T-Bird out of the garage because my daily needed a new radiator hose and much to my surprise the Bird shifted like champ. After driving for about a half hour on four different occasions and then having to back up to pull my car in the garage, it shifted in reverse just as smoothly as any other gear. I appreciate all of your feedback and am very relieved I don't have to worry about shifting into 5th before reverse. It is so much fun driving. Quote Selected
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