4l80e rebuilt not quite right! (need some help)
03-25-2019, 08:19 PM
#1
4l80e rebuilt not quite right! (need some help)
so i rebuilt a 4l80e trans all new raybestos stage 1 clutches, steels, new pistons, seals, replace some hard parts, bushings and full transgo HD2 shift kit
trans is working all forward gears shift nice and crisp when left in drive, i can manually go true the gears the shift that is not as crisp is the 2-3 shift when manually shifting very hesitation, reverse is a little weird it feels like its dragging or like the brake is being applied lightly it will roll back a little then stop? i can give gas and it will move as long as i am pushing the peddle but when i let off it will come to a stop on its own, not a hard stop but it does stop. when in neutral truck will creep forward on its own if i rev up the engine it will move forward faster not like its in gear just a really slow creep, drove it about 10 miles home from the garage i did the install at temps never got up passed 130ish about where the last one use to sit, got aggressive a few times no noises smells or visitations
any of this mean something to you all?
trans is working all forward gears shift nice and crisp when left in drive, i can manually go true the gears the shift that is not as crisp is the 2-3 shift when manually shifting very hesitation, reverse is a little weird it feels like its dragging or like the brake is being applied lightly it will roll back a little then stop? i can give gas and it will move as long as i am pushing the peddle but when i let off it will come to a stop on its own, not a hard stop but it does stop. when in neutral truck will creep forward on its own if i rev up the engine it will move forward faster not like its in gear just a really slow creep, drove it about 10 miles home from the garage i did the install at temps never got up passed 130ish about where the last one use to sit, got aggressive a few times no noises smells or visitations
any of this mean something to you all?
03-27-2019, 07:11 AM
#2
The symptom you are having indicated that the forward clutch or possibly the intermediate clutch is being applied while in reverse ultimately creating a transbrake. Possible crossleak in pump or vb could also be in the plate as well the multilayer plate has been known for getting drilling fragments between the plate. Could also have the forward pack to tight. Or the forward clutches are welded together
03-27-2019, 07:34 AM
#4
And this is why no one gives a **** about these goofy *** forums or you for that matter. I give the guy a technical answer and some keyboard warrior replies go back to playing with your gen 1 camel hump headed 327
03-27-2019, 09:46 AM
#8
I'm not sure what the history/back story is here...but converter install, fluid level, and shifter adjustment are 3 of the most COMMON reasons a built trans takes a ****. So if you're making that a laughing matter...as in saying they don't matter...you're dead wrong.
The amount of customers that are too dense (or not smart enough) to check/properly set all 3 is baffling to me. And it is SOOO easy to tell when they screw it up.
-6 clutch forward stack, with a 200psi line boost/spring setup...and the forwards are toasted...guess what, your shifter was out of adjustment.
-4 clutch intermediate setup and they're wiped out after 3 or 4 passes in a 900hp car...yep...your fluid level is trash
-worn out face on the pump from where the gear dug its way in...yep...your converter install/spacing was f*cked
Then customers get all up in arms and expect you to fix it for free...nothing you can do as a builder about a customer that's too stupid to install a trans properly or too lazy to take the time to get those 3 things right.
That's the end of my rant
The amount of customers that are too dense (or not smart enough) to check/properly set all 3 is baffling to me. And it is SOOO easy to tell when they screw it up.
-6 clutch forward stack, with a 200psi line boost/spring setup...and the forwards are toasted...guess what, your shifter was out of adjustment.
-4 clutch intermediate setup and they're wiped out after 3 or 4 passes in a 900hp car...yep...your fluid level is trash
-worn out face on the pump from where the gear dug its way in...yep...your converter install/spacing was f*cked
Then customers get all up in arms and expect you to fix it for free...nothing you can do as a builder about a customer that's too stupid to install a trans properly or too lazy to take the time to get those 3 things right.
That's the end of my rant
03-27-2019, 10:46 AM
#9
I'm not sure what the history/back story is here...but converter install, fluid level, and shifter adjustment are 3 of the most COMMON reasons a built trans takes a ****. So if you're making that a laughing matter...as in saying they don't matter...you're dead wrong.
The amount of customers that are too dense (or not smart enough) to check/properly set all 3 is baffling to me. And it is SOOO easy to tell when they screw it up.
-6 clutch forward stack, with a 200psi line boost/spring setup...and the forwards are toasted...guess what, your shifter was out of adjustment.
-4 clutch intermediate setup and they're wiped out after 3 or 4 passes in a 900hp car...yep...your fluid level is trash
-worn out face on the pump from where the gear dug its way in...yep...your converter install/spacing was f*cked
Then customers get all up in arms and expect you to fix it for free...nothing you can do as a builder about a customer that's too stupid to install a trans properly or too lazy to take the time to get those 3 things right.
That's the end of my rant
The amount of customers that are too dense (or not smart enough) to check/properly set all 3 is baffling to me. And it is SOOO easy to tell when they screw it up.
-6 clutch forward stack, with a 200psi line boost/spring setup...and the forwards are toasted...guess what, your shifter was out of adjustment.
-4 clutch intermediate setup and they're wiped out after 3 or 4 passes in a 900hp car...yep...your fluid level is trash
-worn out face on the pump from where the gear dug its way in...yep...your converter install/spacing was f*cked
Then customers get all up in arms and expect you to fix it for free...nothing you can do as a builder about a customer that's too stupid to install a trans properly or too lazy to take the time to get those 3 things right.
That's the end of my rant
03-27-2019, 11:05 AM
#10
same filter that was in it was replace with a new one, the converter is the correct one for a 4l80e its a 2400/2500 stall, its installed right im sure of this it was set back 1 inch and i was able to spin it after the trans was fastened to the engine, im not a pro trans guy i could have F'ed something up i have installed and swapped a few transmission a long the way im confident the install is good, this is my 1st time being inside a trans after taring it a part i took all the internals to a trans supply house had it all looked over everything and told me what was good and bad i replaced more then what he said was needed, i did air check and every thing was working as it should as far as i could tell but again this is my 1st time in a trans (was a bucket list thing)
since i posted this i put about 25-30 miles on the trans, reverse is no longer sticking it will roll as long as i keep it in reverse gear, all forward gears are shifting really nice firm crisp fast shifts, @ WOT 1-2 & 2-3 are sweet have not checked 3-4 since 2-3 is around 105mph, putting it in the lower gears it does engine brake. so far it has not gotten hotter then 140ish even with a little aggressive driving, checked fluid level a few times with the truck on level ground its good now i had to take about 1 quart out as it was a little high
right now things that's got me worried, when in neutral rolling slowly as it comes to stop i feel a very slight chatter, vibration, pulse not sure what the best way to describe it, is its just not 100% smooth only felt at like less then 2 mph and stops when it stops rolling, while in neutral if i hold the rpm's around 2k it will creep forward longer i hold the rpms the more speed it picks up when i say speed im talking like 1 or 2 mph and last there is a little of a pump whine with rpm's.
whats the correct way to adjust the shifter linkage?
since i posted this i put about 25-30 miles on the trans, reverse is no longer sticking it will roll as long as i keep it in reverse gear, all forward gears are shifting really nice firm crisp fast shifts, @ WOT 1-2 & 2-3 are sweet have not checked 3-4 since 2-3 is around 105mph, putting it in the lower gears it does engine brake. so far it has not gotten hotter then 140ish even with a little aggressive driving, checked fluid level a few times with the truck on level ground its good now i had to take about 1 quart out as it was a little high
right now things that's got me worried, when in neutral rolling slowly as it comes to stop i feel a very slight chatter, vibration, pulse not sure what the best way to describe it, is its just not 100% smooth only felt at like less then 2 mph and stops when it stops rolling, while in neutral if i hold the rpm's around 2k it will creep forward longer i hold the rpms the more speed it picks up when i say speed im talking like 1 or 2 mph and last there is a little of a pump whine with rpm's.
whats the correct way to adjust the shifter linkage?
Last edited by stroker87; 03-27-2019 at 11:14 AM.
