Seals and Gaskets - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

DirtyLarry · 10-30-2007, 09:06 PM

AGH!!!

I bolted the tranfercase back in yesterday and found I didn’t have enough 80W-90 lying around. So this morning I was all excited to make a trip to the farm store to pick up some grade 8 bolts that I needed for the skid plate and buy a 2 gallon jug of Mystic gear oil only to pump it in and find it now leaks worse at the tcase to transmission adapter than it did before. Zoomad and I had the same problem with this thing 7 years ago when we swapped in the SM465. We had to tear it down twice that time too.

Now that I am mad, things are going to be different this time so in a couple weeks when I have time to tear it back apart I am taking that stupid adapter to the cylinder head service place downtown to have it surfaced as I don’t think it is flat causing all of the sealing problems.

I hate leaks!!

**jaros44sr** · 10-31-2007, 08:04 AM

Quote:

Originally Posted by DirtyLarry

AGH!!!

I bolted the tranfercase back in yesterday and found I didn’t have enough 80W-90 lying around. So this morning I was all excited to make a trip to the farm store to pick up some grade 8 bolts that I needed for the skid plate and buy a 2 gallon jug of Mystic gear oil only to pump it in and find it now leaks worse at the tcase to transmission adapter than it did before. Zoomad and I had the same problem with this thing 7 years ago when we swapped in the SM465. We had to tear it down twice that time too.

Now that I am mad, things are going to be different this time so in a couple weeks when I have time to tear it back apart I am taking that stupid adapter to the cylinder head service place downtown to have it surfaced as I don’t think it is flat causing all of the sealing problems.

I hate leaks!!

Do you have a straight edge laying around, so you can check if it is flat?? Maybe cracked? J.

BTW, this is what I do when not working on the Jimmy. My youngest son has the fish on, and my son-in-law is to the right of me...

DirtyLarry · 10-31-2007, 03:15 PM

Jaros,

Nah, no cracks. Not in this adapter anyway, but the adapter I had when we did the manual trans swap years ago was cracked and had to find another on ebay at the time. This one is just not level. I noticed it wasn’t perfectly level when it was sitting on top of the solvent tank but I figured RTV would be enough to fill in the space.

I had no idea there were nice places like that to fish anywhere around Philly. That looks nice. Every time I have been in the Philly, Camden, and Baltimore area I was almost scared to get out of my rental car. The Western Subs of Philly seemed pretty nice though….West Chester, King of Prussia, etc. I know buying beer in that state is a PITA.

vtblazer · 10-31-2007, 03:55 PM

Quote:

Originally Posted by DirtyLarry

I know buying beer in that state is a PITA.

got that right!

**jaros44sr** · 10-31-2007, 05:38 PM

You's guys are making Philly sound bad!!

And for the beer, I don't know, seems normal to me, doesn't everyone have state stores

Actually, that is Upstate NY, around Lake Ontario. Home of the King Salmon, Steelhead, and other large gamefish. Been going up there for 20 years, just recently let my sons play up there...it's about 4 hours due north

I do live in the King of Prussia area, my wife is a city girl, so whenever we go intown for dinner I let her beat up the bad guys

OLDCHEV4X4 · 11-01-2007, 07:50 AM

I live 50 miles west of Philly in Wagontown. No problem getting out of the truck here. If you can speak Pennsylvania Dutch you'll be better off. Lots of Amish the further west you go.
As for buying beer, You gotta go to a beer distributer to get a case or a keg. If you want a six pack you can go to a bar, but you can only take out 2 at a time. I you want a bottle you gotta go to a state store.
Unfortunatly, no place to go salmon fishing around here.

DirtyLarry · 11-13-2007, 08:03 PM

Well, I finally had time to pull the tcase back out this weekend. I am definitely getting quicker at it. Only took a tad over an hour this time and I didn’t even have to remove the PITA cross-member. If I was a GM tech of the 70’s I might have even beat flat rate time.

Of course, everything was nice and clean too and I remembered the exact tools needed.

Now, I need to take the adapter to the head shop and have them plane it in hopes of making it flat again. It is definitely warped.

Does anybody know if a gasket exists between the adapter to SM465? The kit I had only had a gasket that goes between the adapter and tcase and nothing for the trans side. None of the the local part stores can located the one at the trans side either……except for the trans side gasket for the slush box trannies.

DirtyLarry · 11-27-2007, 12:13 AM

Finally had time over the long holiday to put it all back together again. I scored the transmission to tcase adapter gasket from ORD and used different sealer this time (Mr. Gasket. RIGHT STUFF) So far….no leaks this time!

Also had the rear drive shaft shortened 1.5 inches at the local drivetrain shop as the it was too long after the rear shackle flip. I didn’t even notice it was too long until I went (or tried) to pull it out to address the tcase and trans leaks. Had to lift the rear of the truck up a long way with the bumper jack to get the shaft out.

Yanking in engine out next weekend for the EFI project.

**jaros44sr** · 11-27-2007, 08:33 AM

Glad it worked out for you, was the adapter warped much?

Thanks for the heads up on the drive shaft, never heard of that before on a shackle flip. I want to do that down the road.... J.

DirtyLarry · 11-27-2007, 06:29 PM

Yeah, the adapter is slightly warped. I sat it on the shinny kitchen granite counter top and used a flashlight to spot the warpage. It is not real bad but certainly not flat. Unfortunately, I could not find anybody to plane it for me. The usual guy that I use at the head shop gave me a pack of excuses why he couldn’t do it on his big belt sander. I didn’t see what the issue was as he has done exhaust manifolds and other stuff for me on it. So, I just bought a nice gasket from ORD and used a quality sealant, which seems to have worked very well.

On the driveshaft length, I never heard of anybody else having a driveshaft slip yoke bottom out after a shackle flip either. I have had my rear shaft reworked so many times to make up for tcase swaps, trans swaps, axle swaps, lifts, etc….mine could have been a little long to begin with and the flip just closed the slip yoke gap completely. There was absolutely zero movement in the slip yoke (totally closed). In any event, it is something to watch for after the flip.

10-30-2007, 09:06 PM	#26
DirtyLarry Windy Corner of a Dirty Street Join Date: Jun 2003 Location: Pueblo West, Colorado Posts: 2,926	Re: Seals and Gaskets AGH!!! I bolted the tranfercase back in yesterday and found I didn’t have enough 80W-90 lying around. So this morning I was all excited to make a trip to the farm store to pick up some grade 8 bolts that I needed for the skid plate and buy a 2 gallon jug of Mystic gear oil only to pump it in and find it now leaks worse at the tcase to transmission adapter than it did before. Zoomad and I had the same problem with this thing 7 years ago when we swapped in the SM465. We had to tear it down twice that time too. Now that I am mad, things are going to be different this time so in a couple weeks when I have time to tear it back apart I am taking that stupid adapter to the cylinder head service place downtown to have it surfaced as I don’t think it is flat causing all of the sealing problems. I hate leaks!! __________________ Current vehicle collection: 1978 Chevrolet K10, 8.1L, NV4500, NP205 1989 Chevrolet Suburban, 8.1L, NV4500, NP241 1993 Chevrolet C1500 Sportside, TBI 7.4L, 4L60E 2001 Chevrolet K2500HD, Ext Cab, SWB, 8.1L, ZF 6 speed 2014 Chevrolet Impala LTZ 3.6L Vortec 8.1L because life is too short to tolerate underpowered vehicles Instagram

10-31-2007, 03:15 PM	#28
DirtyLarry Windy Corner of a Dirty Street Join Date: Jun 2003 Location: Pueblo West, Colorado Posts: 2,926	Re: Seals and Gaskets Jaros, Nah, no cracks. Not in this adapter anyway, but the adapter I had when we did the manual trans swap years ago was cracked and had to find another on ebay at the time. This one is just not level. I noticed it wasn’t perfectly level when it was sitting on top of the solvent tank but I figured RTV would be enough to fill in the space. I had no idea there were nice places like that to fish anywhere around Philly. That looks nice. Every time I have been in the Philly, Camden, and Baltimore area I was almost scared to get out of my rental car. The Western Subs of Philly seemed pretty nice though….West Chester, King of Prussia, etc. I know buying beer in that state is a PITA. __________________ Current vehicle collection: 1978 Chevrolet K10, 8.1L, NV4500, NP205 1989 Chevrolet Suburban, 8.1L, NV4500, NP241 1993 Chevrolet C1500 Sportside, TBI 7.4L, 4L60E 2001 Chevrolet K2500HD, Ext Cab, SWB, 8.1L, ZF 6 speed 2014 Chevrolet Impala LTZ 3.6L Vortec 8.1L because life is too short to tolerate underpowered vehicles Instagram

10-31-2007, 05:38 PM	#30
jaros44sr Senior Member Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,768	Re: Seals and Gaskets You's guys are making Philly sound bad!! And for the beer, I don't know, seems normal to me, doesn't everyone have state stores Actually, that is Upstate NY, around Lake Ontario. Home of the King Salmon, Steelhead, and other large gamefish. Been going up there for 20 years, just recently let my sons play up there...it's about 4 hours due north I do live in the King of Prussia area, my wife is a city girl, so whenever we go intown for dinner I let her beat up the bad guys __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim

11-01-2007, 07:50 AM	#31
OLDCHEV4X4 Registered User Join Date: Apr 2000 Location: Chester County PA, USA Posts: 1,228	Re: Seals and Gaskets I live 50 miles west of Philly in Wagontown. No problem getting out of the truck here. If you can speak Pennsylvania Dutch you'll be better off. Lots of Amish the further west you go. As for buying beer, You gotta go to a beer distributer to get a case or a keg. If you want a six pack you can go to a bar, but you can only take out 2 at a time. I you want a bottle you gotta go to a state store. Unfortunatly, no place to go salmon fishing around here. __________________ 72 k/10 short wideside 72 k/5 Blazer 72 K/5 Blazer - obstacle course racer 72 custom/10 8' bed 70 K/5 Blazer 67 C-30 GMC Flat bed 86 GMC K2500 Plow Truck 85 GMC K3500 84 M1008 85 M1008 77 G30 Motor Home 72 Sears 12hp Tractor Glenmoore, Pennsylvania

11-13-2007, 08:03 PM	#32
DirtyLarry Windy Corner of a Dirty Street Join Date: Jun 2003 Location: Pueblo West, Colorado Posts: 2,926	Re: Seals and Gaskets Well, I finally had time to pull the tcase back out this weekend. I am definitely getting quicker at it. Only took a tad over an hour this time and I didn’t even have to remove the PITA cross-member. If I was a GM tech of the 70’s I might have even beat flat rate time. Of course, everything was nice and clean too and I remembered the exact tools needed. Now, I need to take the adapter to the head shop and have them plane it in hopes of making it flat again. It is definitely warped. Does anybody know if a gasket exists between the adapter to SM465? The kit I had only had a gasket that goes between the adapter and tcase and nothing for the trans side. None of the the local part stores can located the one at the trans side either……except for the trans side gasket for the slush box trannies. Attached Images __________________ Current vehicle collection: 1978 Chevrolet K10, 8.1L, NV4500, NP205 1989 Chevrolet Suburban, 8.1L, NV4500, NP241 1993 Chevrolet C1500 Sportside, TBI 7.4L, 4L60E 2001 Chevrolet K2500HD, Ext Cab, SWB, 8.1L, ZF 6 speed 2014 Chevrolet Impala LTZ 3.6L Vortec 8.1L because life is too short to tolerate underpowered vehicles Instagram

11-27-2007, 12:13 AM	#33
DirtyLarry Windy Corner of a Dirty Street Join Date: Jun 2003 Location: Pueblo West, Colorado Posts: 2,926	Re: Seals and Gaskets Finally had time over the long holiday to put it all back together again. I scored the transmission to tcase adapter gasket from ORD and used different sealer this time (Mr. Gasket. RIGHT STUFF) So far….no leaks this time! Also had the rear drive shaft shortened 1.5 inches at the local drivetrain shop as the it was too long after the rear shackle flip. I didn’t even notice it was too long until I went (or tried) to pull it out to address the tcase and trans leaks. Had to lift the rear of the truck up a long way with the bumper jack to get the shaft out. Yanking in engine out next weekend for the EFI project. __________________ Current vehicle collection: 1978 Chevrolet K10, 8.1L, NV4500, NP205 1989 Chevrolet Suburban, 8.1L, NV4500, NP241 1993 Chevrolet C1500 Sportside, TBI 7.4L, 4L60E 2001 Chevrolet K2500HD, Ext Cab, SWB, 8.1L, ZF 6 speed 2014 Chevrolet Impala LTZ 3.6L Vortec 8.1L because life is too short to tolerate underpowered vehicles Instagram

11-27-2007, 08:33 AM	#34
jaros44sr Senior Member Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,768	Re: Seals and Gaskets Glad it worked out for you, was the adapter warped much? Thanks for the heads up on the drive shaft, never heard of that before on a shackle flip. I want to do that down the road.... J. __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim

11-27-2007, 06:29 PM	#35
DirtyLarry Windy Corner of a Dirty Street Join Date: Jun 2003 Location: Pueblo West, Colorado Posts: 2,926	Re: Seals and Gaskets Yeah, the adapter is slightly warped. I sat it on the shinny kitchen granite counter top and used a flashlight to spot the warpage. It is not real bad but certainly not flat. Unfortunately, I could not find anybody to plane it for me. The usual guy that I use at the head shop gave me a pack of excuses why he couldn’t do it on his big belt sander. I didn’t see what the issue was as he has done exhaust manifolds and other stuff for me on it. So, I just bought a nice gasket from ORD and used a quality sealant, which seems to have worked very well. On the driveshaft length, I never heard of anybody else having a driveshaft slip yoke bottom out after a shackle flip either. I have had my rear shaft reworked so many times to make up for tcase swaps, trans swaps, axle swaps, lifts, etc….mine could have been a little long to begin with and the flip just closed the slip yoke gap completely. There was absolutely zero movement in the slip yoke (totally closed). In any event, it is something to watch for after the flip. __________________ Current vehicle collection: 1978 Chevrolet K10, 8.1L, NV4500, NP205 1989 Chevrolet Suburban, 8.1L, NV4500, NP241 1993 Chevrolet C1500 Sportside, TBI 7.4L, 4L60E 2001 Chevrolet K2500HD, Ext Cab, SWB, 8.1L, ZF 6 speed 2014 Chevrolet Impala LTZ 3.6L Vortec 8.1L because life is too short to tolerate underpowered vehicles Instagram



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