Home Built 4L80e for Turbo Truck
#22
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Join Date: Sep 2016
Location: North Jersey
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Oh man that does suck!
Were you trying to save it or just the right place/wrong time?
Either way your hand probably saved the trans from pushing everything up into it.
What hurt more? The trans or them cleaning your hand for stitches?
Hope you feel better soon.
Were you trying to save it or just the right place/wrong time?
Either way your hand probably saved the trans from pushing everything up into it.
What hurt more? The trans or them cleaning your hand for stitches?
Hope you feel better soon.
#23
They had me numbed before they started wiping it clean but the iodine solution they had me soak my hand in for 30 min hurt like hell.. The initial injury hurt the worst by far Thanks man!
#29
TECH Veteran
iTrader: (7)
Looking good, except that hand, I bypassed those pics pretty quick, I get queasy looking at blood, lol
I have built a couple 80E's, only prob. with one was converter drain back, I had to install that Sonnax valve kit.
If I don't lay out how each part came out, I am screwed-I noticed some later 80E's have the thicker snap ring that comes in the HD-2 kit
I have built a couple 80E's, only prob. with one was converter drain back, I had to install that Sonnax valve kit.
If I don't lay out how each part came out, I am screwed-I noticed some later 80E's have the thicker snap ring that comes in the HD-2 kit
#30
Tonight is the first night back in a while. I got the bad trans drained and the pan off in order to get the longer shift shaft out of it. The trans smells pretty bad. Can't wait to tear it apart to see what broke. Hopefully tomorrow I can get the shifter shaft swapped in the new trans and ready to put in the truck.
#32
TECH Fanatic
I would think a serious leak in the Forward Clutch Circuit/Drive Oil.
The Input shaft has 2 sets (4) solid teflon sealing rings that seal forward clutch oil that can give issues.
Where the sealing rings ride in the forward clutch drum is apt to get damaged by the input shaft on high mileage units....How was your forward drum?
Pump to case gasket.
O-ring missing on the pressure switch manifold....Replace 100%!
Mispositioned/Torn VB gaskets.
The Input shaft has 2 sets (4) solid teflon sealing rings that seal forward clutch oil that can give issues.
Where the sealing rings ride in the forward clutch drum is apt to get damaged by the input shaft on high mileage units....How was your forward drum?
Pump to case gasket.
O-ring missing on the pressure switch manifold....Replace 100%!
Mispositioned/Torn VB gaskets.
#33
I would think a serious leak in the Forward Clutch Circuit/Drive Oil.
The Input shaft has 2 sets (4) solid teflon sealing rings that seal forward clutch oil that can give issues.
Where the sealing rings ride in the forward clutch drum is apt to get damaged by the input shaft on high mileage units....How was your forward drum?
Pump to case gasket.
O-ring missing on the pressure switch manifold....Replace 100%!
Mispositioned/Torn VB gaskets.
The Input shaft has 2 sets (4) solid teflon sealing rings that seal forward clutch oil that can give issues.
Where the sealing rings ride in the forward clutch drum is apt to get damaged by the input shaft on high mileage units....How was your forward drum?
Pump to case gasket.
O-ring missing on the pressure switch manifold....Replace 100%!
Mispositioned/Torn VB gaskets.
From the basic research Ive done this morning, could it be the roller clutch? And what would I look for to see that that was bad... It had all the rollers and springs in it. It turned one way, and locked the other way when installed.. I don't know.
#35
10 Second Club
iTrader: (9)
this is your forward clutch assembly, ensure that everything is there, also ensure that all piston seals are good and didnt get torn during install if you replaced them.
also check your clutch engagment clearence. rule of thumb is .010 for each disk.
do you have any mods done? IE like duel feed or anything like that
#36
UPDATE.... I guess I was flustered yesterday.. Just got home and tried all forward gears again. First is the only gear that free revs. Manual second runs normal as wells as third and OD.. Please someone tell me some good news. Anyone know why only first gear is free revving?
Edit: Sounds like it's the 1-2 shift solenoid or the valve is stuck in the bore. I noticed in the scanner it wasn't commanding 1-2 while in first gear. Not sure why since it needs the 1-2 solenoid engaged to apply 1st gear correct?? If I use the command features, I can command 1-2 and it pops into 1st gear. So do you guys think its a faulty solenoid or something more?
When I command the 1-2 solenoid, it definitely pops into first gear, but giving it gas up the driveway, it feels like it has a 4500rpm stall converter. So it has some slip to it. On level grade, it feels normal. So not sure if the solenoid would fix the issue or if there is more to it.
Edit: Sounds like it's the 1-2 shift solenoid or the valve is stuck in the bore. I noticed in the scanner it wasn't commanding 1-2 while in first gear. Not sure why since it needs the 1-2 solenoid engaged to apply 1st gear correct?? If I use the command features, I can command 1-2 and it pops into 1st gear. So do you guys think its a faulty solenoid or something more?
When I command the 1-2 solenoid, it definitely pops into first gear, but giving it gas up the driveway, it feels like it has a 4500rpm stall converter. So it has some slip to it. On level grade, it feels normal. So not sure if the solenoid would fix the issue or if there is more to it.
Last edited by oakley6575; 06-19-2017 at 07:37 PM.
#37
I ended up finding the two cushion plates go with the ID facing down so I tore the trans back apart and fixed it. Not sure what would have happened with them installed upside down but it's right now.
I got the pump aligned and intalled, so the only thing left is the valvebody. I have it most of the way torn apart but I can't figure out how to disassemble two parts in it. I'll get it rebuilt tonight and hopefully installed.
I got the pump aligned and intalled, so the only thing left is the valvebody. I have it most of the way torn apart but I can't figure out how to disassemble two parts in it. I'll get it rebuilt tonight and hopefully installed.
#39
Played with it some more today in the scanner. I noticed the 2-3 solenoid is commanded when it should be in first gear.. Why would it be commanding 2-3 instead of 1-2??
Right now in D4, it commands 1-2 off and 2-3 on in first gear, 1-2 and 2-3 solenoids off during 2nd gear, and then 1-2 on and 2-3 off during 3rd gear, and 1-2 and 2-3 both on for overdrive.. The only issue I see is first gear.
I don't know if changing the solenoids would do change anything... Why would it command 2-3 in first gear. Doesn't make sense to me
Right now in D4, it commands 1-2 off and 2-3 on in first gear, 1-2 and 2-3 solenoids off during 2nd gear, and then 1-2 on and 2-3 off during 3rd gear, and 1-2 and 2-3 both on for overdrive.. The only issue I see is first gear.
I don't know if changing the solenoids would do change anything... Why would it command 2-3 in first gear. Doesn't make sense to me
#40
TECH Addict
iTrader: (32)
hey when u get it all figured out post up how u like the shift firmness. I'm rebuilding my 80e currently with all new parts. I had a hd2 kit in it previously but shifts were not all that firm to me. I plan on redrilling plate to something larger like u have. Let me know.