Hey guys get the metal Felpro gasket set and use the grey RTV or black and make sure those corners have a generous amount (those guides have a lip on the ends and they have to be put on first before u lay down the gaskets that lay over the ports) and alow it to dry overnight or at least give it sometime to seeet I have the nortorious 3800
I have a 4T65E-HD that has a 300M input shaft, a chrome moly pump shaft, a single drive chain/gear setup, and a Quaife differential. I recently disintegrated a piston in the engine of my Grand Prix. Now I am building a Chevy S10, so I am selling off a lot of W-body performance parts.
@@JuryRigGarage I will gather up what Information I have on everything for you, and find out what I can about shipping. I will let you know what the bottom line is asap.
It's very important to use thread sealant with the LIM bolts. Not thread locker, but thread sealant. I've had issues with the LIM bolts coming loose and causing leaks. The 11ft lbs isn't very tight as it is, and the thread sealant also acts as an anerobic sealant to keep the bolts tight. Also with those metal gaskets, you can go up to 15ft lbs. That's one suggestion. Not sure if you're having any vacuum leaks or not, but again, this could be why. These LIM gaskets can be finiky. Were those heads milled down at all?
@@JuryRigGarage I can't see just a minor resurfacing causing this much. Maybe it is the red RTV, but I've used the red before and didn't have any issues lol. Did you use RTV on both sides of the gasket in the corners?
Never seen that large of a leak on the valley. There always wet and covered in dirt. I have good luck with not using those orange gaskets and run a bead of black rtv. Good luck guys
Very well could be. We damaged the bearing on the torque converter when removing it on rebuild #1. We got the bearing replaced and it's a different motor so should be no issues. Wonder if it got messed up again on this rebuild?
Any ideas as to why we're seeing oil leaks on the LIM? We used new gaskets and dabbed permatex red in the corners like normal. Let us know!
@P. C. B Bad advice 😂
Hey guys get the metal Felpro gasket set and use the grey RTV or black and make sure those corners have a generous amount (those guides have a lip on the ends and they have to be put on first before u lay down the gaskets that lay over the ports) and alow it to dry overnight or at least give it sometime to seeet I have the nortorious 3800
I have a 4T65E-HD that has a 300M input shaft, a chrome moly pump shaft, a single drive chain/gear setup, and a Quaife differential. I recently disintegrated a piston in the engine of my Grand Prix. Now I am building a Chevy S10, so I am selling off a lot of W-body performance parts.
That transmission sounds badass, where are you located? We're near Portland OR
@@JuryRigGarage I am in Tampa, FL. I would have to ship it to you.
@@ou812damn Gotcha, how much were you looking to get for it? Any receipts on it or did you build it yourself?
@@JuryRigGarage I will gather up what Information I have on everything for you, and find out what I can about shipping. I will let you know what the bottom line is asap.
Thanks, we’re located in the Vancouver/Portland area. You can use zip code 98661 if you need it to calculate shipping
Permatex fr 12v Cummins guy, still drive 95 SSEI 224 000 K
I'm in the same boat with my 3800sc. Trans is going out on me seriously and its leaking oil. My only driver as well
Damn I feel your pain. How many miles on it?
@@regalherbsman5938 165k
You should be using ultra black RTV on the corners of the intake gaskets... it will seal up then, that red stuff isn't very good with oil.
Tru, that black stuff pretty much glues it on . I used it on my oil pan, had a hell of a time removing it when I smashed it
When you redo the lim gaskets use "Right Stuff" rtv
It's very important to use thread sealant with the LIM bolts. Not thread locker, but thread sealant. I've had issues with the LIM bolts coming loose and causing leaks. The 11ft lbs isn't very tight as it is, and the thread sealant also acts as an anerobic sealant to keep the bolts tight. Also with those metal gaskets, you can go up to 15ft lbs.
That's one suggestion. Not sure if you're having any vacuum leaks or not, but again, this could be why. These LIM gaskets can be finiky.
Were those heads milled down at all?
They were resurfaced when taken to the machine shop. We also used permatex PTFE thread sealant on the LIM bolts
@@JuryRigGarage I can't see just a minor resurfacing causing this much. Maybe it is the red RTV, but I've used the red before and didn't have any issues lol.
Did you use RTV on both sides of the gasket in the corners?
Btw on the sides of LIM (very corners) you need to put rtv preferably the grey one. Without it the leak is inevitable
Yeah we did put some permatex red RTV in the corners, as shown in the video, wonder if it's just not as good at handling oil like the black stuff.
I've seen this happen with aggressively milled heads.
They were resurfaced for the rebuild
Never seen that large of a leak on the valley. There always wet and covered in dirt. I have good luck with not using those orange gaskets and run a bead of black rtv. Good luck guys
Thanks for the input! So far really never had issues with the guides + RTV in the corners. Odd this one would fail
I’m making a rebuild video on the 4t65e-HD it’s not too difficult I must say for first time
Yeah we've torn it down before but didn't go too deep with it. We'll check out the vids, thanks!
Get rid of your TR6 plugs and install BR7 plugs. You'll thank me later.
Will have to look into those, what are the benefits?
@@JuryRigGarage much better plug for supercharged or nitrous applications. Less prone to preignition
Fix it the right way.. don’t rig it.. u will blow yur motor
That is the plan. We added the extra RTV to make it a week as we plan of fixing it this weekend
@@JuryRigGarage You gotta jury rig it mannn. JB Weld that shit
I wonder if its not the torque converter
Very well could be. We damaged the bearing on the torque converter when removing it on rebuild #1. We got the bearing replaced and it's a different motor so should be no issues. Wonder if it got messed up again on this rebuild?