stick_witch
Full Access Member
Kinda a funny topic, but I’m just curious. My idi has been my first experience with the zf5 and its been kinda a moody drivetrain system to figure out.
I should mention first off that my trans is pretty worn out. Syncros going into 2nd and 3rd are pretty and my reverse has the common pop out problem that old, worn out zf’s have. Its also worth mentioning that i have 4.10s so this thing is a torque monster when grabbing lower gears, and all of this has made the experience just that more interesting, plus trying to operate the horrendous hydraulic clutch system on these trucks up here in the freezing north, and having your bite point change depending on the temp[emoji23].
Currently my shifting habits are starting in second, or starting in 1st and blipping up to 1400 and usually having to double clutch up into second, then grabbing 3rd at about 2k, anything over I have to double clutch to get it into 3rd, then i just single clutch normally through to 4th and 5th. I double clutch rev match down through all gears except down into 2nd and 1st. And to get into reverse i usually have to kick the clutch in N and wait a couple times till i get good shaft alignment and a nice firm pop into reverse.
Curious how you guys shift your zf? Any double clutchers? Floaters? My experience has been that double clutching really takes a load off the synchros, but the clutch will wear you out if you’re having to double clutch to the floor every gear, since thats what you have to do in these trucks. And i’ve also found that the zf is super finicky to float and really just doesn’t like to do it (like duh, its synchronized), and really is pretty much impossible to float into gears if you have bad synchros, and if you do decide to do it you pretty much have to have absolutely perfect shifts every time
Also, does anyone have issues with these trannys just being clunky? Not sure if its just the state of mine, but when im putting torque down and pulling pretty good and im grabbing a gear, upon letting out the clutch the thing just sounds and feels clunky underneath me, like its got play in it. It’ll jolt pretty good sometimes too, even with proper rev matching and even if i try to slip the clutch a little bit more. Not sure what it is really, i had a bad carrier bearing, but i replaced it and its still just clunky as heck sometimes. Idk, I imagine it might just be time to have the zf rebuilt...
Any recommendations on rebuilding?
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I should mention first off that my trans is pretty worn out. Syncros going into 2nd and 3rd are pretty and my reverse has the common pop out problem that old, worn out zf’s have. Its also worth mentioning that i have 4.10s so this thing is a torque monster when grabbing lower gears, and all of this has made the experience just that more interesting, plus trying to operate the horrendous hydraulic clutch system on these trucks up here in the freezing north, and having your bite point change depending on the temp[emoji23].
Currently my shifting habits are starting in second, or starting in 1st and blipping up to 1400 and usually having to double clutch up into second, then grabbing 3rd at about 2k, anything over I have to double clutch to get it into 3rd, then i just single clutch normally through to 4th and 5th. I double clutch rev match down through all gears except down into 2nd and 1st. And to get into reverse i usually have to kick the clutch in N and wait a couple times till i get good shaft alignment and a nice firm pop into reverse.
Curious how you guys shift your zf? Any double clutchers? Floaters? My experience has been that double clutching really takes a load off the synchros, but the clutch will wear you out if you’re having to double clutch to the floor every gear, since thats what you have to do in these trucks. And i’ve also found that the zf is super finicky to float and really just doesn’t like to do it (like duh, its synchronized), and really is pretty much impossible to float into gears if you have bad synchros, and if you do decide to do it you pretty much have to have absolutely perfect shifts every time
Also, does anyone have issues with these trannys just being clunky? Not sure if its just the state of mine, but when im putting torque down and pulling pretty good and im grabbing a gear, upon letting out the clutch the thing just sounds and feels clunky underneath me, like its got play in it. It’ll jolt pretty good sometimes too, even with proper rev matching and even if i try to slip the clutch a little bit more. Not sure what it is really, i had a bad carrier bearing, but i replaced it and its still just clunky as heck sometimes. Idk, I imagine it might just be time to have the zf rebuilt...
Any recommendations on rebuilding?
Sent from my iPhone using Tapatalk