i have a 1997 sierra 1500 with 3.73 gears i would like to put a 6inch lift and 35x12.50 would swaping to a 4.10 gear be better for driveing?? and will they be better for highway (60mph) and town (25mph) driveing
WIsh I would have had this video back in 1976. Had a properly set up 12 bolt posi in my 68 Camaro but I just had to change to 4.88's. Thought I had everything set up correctly but it didn't take long before the rear started singing. Wasn't long after that when I just sold off the car. Mistakes made. Oh and if you mod something...save the old stuff or mod a replacement part. That was the other reason I sold it off. Bought another 68 in 1984 but just not the same as your 1st love.TMI, rtn to prog.
Aloha Weber Auto in your explanation on putting load on the differential set up (using the brakes and turning the pinion flange with a socket. I was wondering if perhaps in doing this you could off set the pinion pre-load?
@trucEtnA Hi, that is a good question. As long as you are using a new pinion nut with thread lock compound, a new crush sleeve or preload shims AND you only apply the brakes just hard enough to reach the appropriate loaded rotational torque at the pinion, it will not over torque the pinion bearings as you run the contact pattern.
@Trx420fm1 I dont haven't herd that about then shutting that down for now mine says made in texas this trash talk is addicting aint it fun as hell to ur truck was clean the quad got dirty mine stays clean cant do much in this shit state n.y but go on a beach but it takes on the home stuff rock dirt lumber u know home depot stuff u can call it yuppie iguess but all 1500 do about the same thing now give or take a couple pounds did u c the 10.5 ring gear yet
thank you for this vid. i now feel a little better about changing my pinion bearings. i am working with a dodge 9.25 but its the same concept. now all i have to do is find the proper specs for my dif.
@6806goats1 I know a guy that fixes race cars for a living and he has seen this happen.Most race car drivers in my area kick Royal purple off the side not using it.My father's friend Rich has seen this happen too,replaced a ring and pinion because of synthetic gear lube.Was fine before the the switch and was noisey after.He also has a 1983 Monte Carlo,a 9 inch Ford with a detroit locker and the place he got the rear end from said no synthetic gear lube screwing up the detroit locker.
@wafrederick I wonder if the special additive was being used. When you mentioned posi it jogged my brain cells and I remember that GM made a special additive that was needed for posi units. It's basically a extreme pressure moly-b additive for posi's. I like synthetic oils but glad you brought this up. I was going the same route with Amsoil and was warned not to forget the additive if running a posi. Thanks for the update.
@Tenkolazy Hey, thanks for noticing. Pretty funny huh? Things never go as you would like them to while you are recording video. By the way, a slightly bent shim like that will not hurt anything. The bigger concern is to not mushroom over the edge of the shim with a steel hammer, it will cause the bearing cup to sit slightly tilted resulting in premature bearing wear and noise. It is a lot harder to install those shims than it looks like.
Depends on the shim thickness, I bent one the other day that could not easily be re-flattened and was impacting my backlash a lot. Might be worth mentioning that you would be wise to spread out the surface area when tapping a shim with a thick rag, rubber piece, etc.
I also want to agree on measuring backlash from multiple points. every tooth May be overkill to me, 3 or 4 points paints a good picture I almost missed a little runout the other day in my aftermarket center.
That's similar to what the little birdie on my shoulder was telling me... thank you very much for clarifying that...it only makes perfect sense. And again, thank you for the awesome videos! I'm adding 4.56 to a ford 10.5". I have to miller lock a limited slip...:-/ (not by choice...) wish me luck. Hehe
One thing you did not mention, in which I have been told by several people, but still not convinced its correct, especially how your so adamant about measuring backlash on every tooth, before installing the new bearings, I was told to press off the old side and pinion bearings, and slightly grind out the inner races so they are easy to put on and pull off to ease the process of setting backlash... It would make sense to use the new bearings, as their tolerances may/most likely be tighter...???
@jrstow86 Hello, In a perfect world that might work, but today's new replacement bearings are not the same dimensions as the old bearings. There is actually a plus-or-minus .003" (.076mm) thickness specification for some replacement bearings. This means that if you do as you say (grind the old inner bearing races) and then replace them with new bearings, you could be off as much as .006" (.152mm) to the left or right affecting your backlash and your side bearing preload.
@WeberAuto soooo true.... the novice doesn't take that into account until they are in a pickle.... which is what we have learned through things the hard way.... always measure twice, grind once....ha ...sounds simple.... but it may not be.
@Msonjo916 Hi, for pinion gears that use a crush sleeve, you do not tighten the nut to a specific torque, you tighten the nut until it takes a specific torque to rotate the pinion gear (all the bearings must be lubricated before doing this). There are some pinions that you do tighten the nut to a specific torque because they use selective spacers rather than a crush sleeve to set the pinion bearing preload.
@Msonjo916 Hi, for pinion gears that use a crush sleeve, you do not tighten the nut to a specific torque, you tighten the nut until it takes a specific torque to rotate the pinion gear (all the bearings must be lubricated before doing this). There are some pinions that you do tighten the nut to a specific torque because they use selective spacers rather than a crush sleeve to set the pinion bearing preload.
@WeberAuto Thanks you Sir. But how would you find the set up pinion depth when you have new pinion, ring, shims and collaspsible spacer? how would you figure out which size of ships I needed to install on pinion?
@Msonjo916 Hi, without the special tools to select the proper beginning pinion depth shim, I would use the old shim, set the backlash to specifications and check the gear contact pattern. The pattern will let you know if the pinion depth or backlash need further adjustment.
@WeberAuto Sir I have question about setting up the pinion depth and preload. Iam realy lost on how to set all up together. as you said, first you should install the shim or collapsible spacer on pinion and then attouch it with ring in deffirential housing and finaly tight down the nut. Iam not sure but can you help. thanks.
Hi, I have a question regarding backlash adjustment. I've done everything like you said on your vid, setup the preload, check the backlash with dial indicator and then I ran a test with gear marking compound. What happened is that after the test I found out that there are markings right in the center of DRIVE side but there aren't any on the COAST side (i did turn the ring forward and backwards couple of times). What to do ? should I replace gear or pinion ? Thanks...Great vid by the way
@djsteve1987 Hi, When you ran the contact pattern did you provide some load on the ring gear as you rotated the pinion? I usually use a pry bar on the outside smooth part of the ring gear to make it difficult to rotate and then turn the pinion forward 5 turns and backwards f turns. (Assuming the backlash and pinion depth are close to spec) If you still do not have a pattern on both the coast and the drive sides, you probably have a bad gear set.
@WeberAuto Sir I have question about setting up the pinion depth and preload. Iam realy lost on how to set all up together. as you said, first you should install the shim or collapsible spacer on pinion and then attouch it with ring in deffirential housing and finaly tight down the nut. Iam not sure but can you help. thanks.
OMG! I seriously LOVE this! I keep having nightmares about what to do with my Differential Ring and Pinion Gear Setup, and now I can rest easy!!!! Thank you Professor Kelly!!!!!!!!!!!
i pulled a rear axle on an f150 and the spider gears fell out now i cant get the shims or the gears back in can anybody help plz email cindysmokesalot@gmail.com im a woman with two kids and no money to buy a whole new rear end
@warslayer1981 Hi, usually the entire housing has to be changed if you change the ring gear size. But even if you didn't, you would be starting from the beginning and would have to setup proper bearing preloads and backlash before running a contact pattern. You could not reuse previous shims, they would most likely need to be different.
@EpiclyAwsomeDude I understand your line of thinking, but what if the pinion does not need to be tuned? You should still remove the old crush sleeve and install a new one.
I would like to change the differential gear ratio in an antique car, for better highway speeds (1934 Buick). How do I find another ring and pinion for this purpose?
i have a 1997 sierra 1500 with 3.73 gears i would like to put a 6inch lift and 35x12.50 would swaping to a 4.10 gear be better for driveing?? and will they be better for highway (60mph) and town (25mph) driveing
Dansz71sierra 2 days ago
WIsh I would have had this video back in 1976. Had a properly set up 12 bolt posi in my 68 Camaro but I just had to change to 4.88's. Thought I had everything set up correctly but it didn't take long before the rear started singing. Wasn't long after that when I just sold off the car. Mistakes made. Oh and if you mod something...save the old stuff or mod a replacement part. That was the other reason I sold it off. Bought another 68 in 1984 but just not the same as your 1st love.TMI, rtn to prog.
6806goats1 2 weeks ago
Another awesome video.
6806goats1 2 weeks ago
Aloha Weber Auto in your explanation on putting load on the differential set up (using the brakes and turning the pinion flange with a socket. I was wondering if perhaps in doing this you could off set the pinion pre-load?
P.S
BTW you almost said backass at 10:03
trucEtnA 4 weeks ago
@trucEtnA Hi, that is a good question. As long as you are using a new pinion nut with thread lock compound, a new crush sleeve or preload shims AND you only apply the brakes just hard enough to reach the appropriate loaded rotational torque at the pinion, it will not over torque the pinion bearings as you run the contact pattern.
WeberAuto 3 weeks ago
Great video you take alot of time and effort thank you :)
theonlytags 1 month ago
could you, or have you, made a video covering IFS front differentials, for example, the gm 8.25" front diff found in all 1/2 tonnes from 99-12?
jmanwild 1 month ago
@Trx420fm1 I dont haven't herd that about then shutting that down for now mine says made in texas this trash talk is addicting aint it fun as hell to ur truck was clean the quad got dirty mine stays clean cant do much in this shit state n.y but go on a beach but it takes on the home stuff rock dirt lumber u know home depot stuff u can call it yuppie iguess but all 1500 do about the same thing now give or take a couple pounds did u c the 10.5 ring gear yet
stephen4177 1 month ago
@Trx420fm1 here it is 10.5 just a tough as ur 2500 but made america lol
stephen4177 1 month ago
naw i dont need to go to school. all i need is to watch this guys videos.
skater32792 1 month ago
thank you for this vid. i now feel a little better about changing my pinion bearings. i am working with a dodge 9.25 but its the same concept. now all i have to do is find the proper specs for my dif.
brianincollingo 1 month ago
Synthetic gear lube will destroy ring and pinions in racing rear ends including the rear ends.Royal Purple synthetic gear lube is known for this
wafrederick 2 months ago
@wafrederick Sorry but I find that hard to believe. Is this a personal preference or do you have data to validate this claim?
6806goats1 2 weeks ago
@6806goats1 I know a guy that fixes race cars for a living and he has seen this happen.Most race car drivers in my area kick Royal purple off the side not using it.My father's friend Rich has seen this happen too,replaced a ring and pinion because of synthetic gear lube.Was fine before the the switch and was noisey after.He also has a 1983 Monte Carlo,a 9 inch Ford with a detroit locker and the place he got the rear end from said no synthetic gear lube screwing up the detroit locker.
wafrederick 2 weeks ago
@wafrederick I wonder if the special additive was being used. When you mentioned posi it jogged my brain cells and I remember that GM made a special additive that was needed for posi units. It's basically a extreme pressure moly-b additive for posi's. I like synthetic oils but glad you brought this up. I was going the same route with Amsoil and was warned not to forget the additive if running a posi. Thanks for the update.
6806goats1 2 weeks ago
Thank you for a great Video. I will be referring to this as i do my diff.
cheers
toranarod 2 months ago
he totaly bent that fucking ring with the hammer jajajajajajaja
Tenkolazy 2 months ago
@Tenkolazy Hey, thanks for noticing. Pretty funny huh? Things never go as you would like them to while you are recording video. By the way, a slightly bent shim like that will not hurt anything. The bigger concern is to not mushroom over the edge of the shim with a steel hammer, it will cause the bearing cup to sit slightly tilted resulting in premature bearing wear and noise. It is a lot harder to install those shims than it looks like.
WeberAuto 2 months ago 2
Depends on the shim thickness, I bent one the other day that could not easily be re-flattened and was impacting my backlash a lot. Might be worth mentioning that you would be wise to spread out the surface area when tapping a shim with a thick rag, rubber piece, etc.
I also want to agree on measuring backlash from multiple points. every tooth May be overkill to me, 3 or 4 points paints a good picture I almost missed a little runout the other day in my aftermarket center.
tastyratz 1 month ago
I learned a lot from this, thanks!
ragejed 2 months ago
Good video...thanks for sharing :)
ZUK
ken85225 2 months ago
Excellent video and well presented!
DarkBlueMark 3 months ago
Very informational video! Thank you.
cal63look 3 months ago in playlist Favorite videos
That's similar to what the little birdie on my shoulder was telling me... thank you very much for clarifying that...it only makes perfect sense. And again, thank you for the awesome videos! I'm adding 4.56 to a ford 10.5". I have to miller lock a limited slip...:-/ (not by choice...) wish me luck. Hehe
jrstow86 4 months ago
One thing you did not mention, in which I have been told by several people, but still not convinced its correct, especially how your so adamant about measuring backlash on every tooth, before installing the new bearings, I was told to press off the old side and pinion bearings, and slightly grind out the inner races so they are easy to put on and pull off to ease the process of setting backlash... It would make sense to use the new bearings, as their tolerances may/most likely be tighter...???
jrstow86 4 months ago
@jrstow86 Hello, In a perfect world that might work, but today's new replacement bearings are not the same dimensions as the old bearings. There is actually a plus-or-minus .003" (.076mm) thickness specification for some replacement bearings. This means that if you do as you say (grind the old inner bearing races) and then replace them with new bearings, you could be off as much as .006" (.152mm) to the left or right affecting your backlash and your side bearing preload.
WeberAuto 4 months ago
@WeberAuto soooo true.... the novice doesn't take that into account until they are in a pickle.... which is what we have learned through things the hard way.... always measure twice, grind once....ha ...sounds simple.... but it may not be.
alfee9411 2 months ago
Awesome video. Anyone who messes up a rear end after studying this video, should sell their tools. Nice job!!
jrstow86 4 months ago 2
@jrstow86 Thank you!
WeberAuto 4 months ago
I have question, what is the difference between checking the preload with dial-type torque wrench and setting the preload and tightening down?
Msonjo916 5 months ago
@Msonjo916 Hi, for pinion gears that use a crush sleeve, you do not tighten the nut to a specific torque, you tighten the nut until it takes a specific torque to rotate the pinion gear (all the bearings must be lubricated before doing this). There are some pinions that you do tighten the nut to a specific torque because they use selective spacers rather than a crush sleeve to set the pinion bearing preload.
WeberAuto 5 months ago
@Msonjo916 Hi, for pinion gears that use a crush sleeve, you do not tighten the nut to a specific torque, you tighten the nut until it takes a specific torque to rotate the pinion gear (all the bearings must be lubricated before doing this). There are some pinions that you do tighten the nut to a specific torque because they use selective spacers rather than a crush sleeve to set the pinion bearing preload.
WeberAuto 5 months ago
@WeberAuto Thanks you Sir. But how would you find the set up pinion depth when you have new pinion, ring, shims and collaspsible spacer? how would you figure out which size of ships I needed to install on pinion?
Msonjo916 5 months ago
@Msonjo916 Hi, without the special tools to select the proper beginning pinion depth shim, I would use the old shim, set the backlash to specifications and check the gear contact pattern. The pattern will let you know if the pinion depth or backlash need further adjustment.
WeberAuto 5 months ago
@WeberAuto Sir I have question about setting up the pinion depth and preload. Iam realy lost on how to set all up together. as you said, first you should install the shim or collapsible spacer on pinion and then attouch it with ring in deffirential housing and finaly tight down the nut. Iam not sure but can you help. thanks.
Msonjo916 5 months ago
@Msonjo916 See my answer to your second question. Let me know if you still need help.
WeberAuto 5 months ago
@Msonjo916 See my answer to your second question. Let me know if you still need help.
WeberAuto 5 months ago
Hi, I have a question regarding backlash adjustment. I've done everything like you said on your vid, setup the preload, check the backlash with dial indicator and then I ran a test with gear marking compound. What happened is that after the test I found out that there are markings right in the center of DRIVE side but there aren't any on the COAST side (i did turn the ring forward and backwards couple of times). What to do ? should I replace gear or pinion ? Thanks...Great vid by the way
djsteve1987 5 months ago
@djsteve1987 Hi, When you ran the contact pattern did you provide some load on the ring gear as you rotated the pinion? I usually use a pry bar on the outside smooth part of the ring gear to make it difficult to rotate and then turn the pinion forward 5 turns and backwards f turns. (Assuming the backlash and pinion depth are close to spec) If you still do not have a pattern on both the coast and the drive sides, you probably have a bad gear set.
WeberAuto 5 months ago
@WeberAuto Sir I have question about setting up the pinion depth and preload. Iam realy lost on how to set all up together. as you said, first you should install the shim or collapsible spacer on pinion and then attouch it with ring in deffirential housing and finaly tight down the nut. Iam not sure but can you help. thanks.
Msonjo916 5 months ago
OMG! I seriously LOVE this! I keep having nightmares about what to do with my Differential Ring and Pinion Gear Setup, and now I can rest easy!!!! Thank you Professor Kelly!!!!!!!!!!!
he he he
:)
crys1230 5 months ago
This has been flagged as spam show
i pulled a rear axle on an f150 and the spider gears fell out now i cant get the shims or the gears back in can anybody help plz email cindysmokesalot@gmail.com im a woman with two kids and no money to buy a whole new rear end
snakish666 6 months ago
If I change the ring and pinion do I have to mess with the smaller internal gears or can I just change the ring and pinion?
JasonFful 6 months ago
@JasonFful Hi, you can just change the ring and pinion gears without changing the differential gear set (side gears and differential pinion gears).
WeberAuto 6 months ago
Great job on video!
mast3rcater 6 months ago
If i change the size of the ring and pinion what else do i have to change
warslayer1981 7 months ago
@warslayer1981 Hi, usually the entire housing has to be changed if you change the ring gear size. But even if you didn't, you would be starting from the beginning and would have to setup proper bearing preloads and backlash before running a contact pattern. You could not reuse previous shims, they would most likely need to be different.
WeberAuto 7 months ago
great video!really clears up some questions and simplifies ring and pinion replacement
ATTtheoneandonly 8 months ago
I always use an old crush sleeve on the pinion, set the preloads then check the pattern so I dont waste crush sleeves if the pinion needs to be tuned
EpiclyAwsomeDude 8 months ago
@EpiclyAwsomeDude I understand your line of thinking, but what if the pinion does not need to be tuned? You should still remove the old crush sleeve and install a new one.
WeberAuto 8 months ago
@WeberAuto Of course I would never leave the used crush sleeve in.
EpiclyAwsomeDude 8 months ago
I would like to change the differential gear ratio in an antique car, for better highway speeds (1934 Buick). How do I find another ring and pinion for this purpose?
BuickDoc 9 months ago
@BuickDoc I am sorry, but I have no information on that axle or parts for it.
WeberAuto 8 months ago
Excellent Video, I am going to change my ring and pinion now.
JASONANDTRACI 9 months ago
Great job explaining it professor
sportguy17 9 months ago
Very nice vid, very educational :)
brandun69 9 months ago
very good ,clear explanations.
selleralph 10 months ago