confab

The female part, I meant.. Maybe they call them a "bushing"

But, anyway, they're steel and threaded in both ends. NPT is cool because it's a sealing thread. Tapered. Cheap too.

mark970

Couplings would have internal threads...it would eliminate having to drill and tap a boss...plus they make magnetic drain plugs with inch threads...but the fit would probably be sloppy...i will investigate this though...its a nice idea

good idea, thanks!

Joe C

am I to understand that there's some concern about a small amount of fluid remaining because of the drain flange inside the pan? I picture draining the pan, then dropping the pan to replace the filter. a small amount of fluid left in the pan after draining should be insignificant when doing a transmission service/filter change. i'm thinking the drain plug is just added to make dropping the pan a bit more convenient. ...or am I out in left field on this one? personally, if i'm going to service the transmission, I going to install a new filter.

mark970

well, my thought was to not drop the pan every time...the convertible x-brace is a PITA so a good high quality drain would be excellent. i have 2 threads about this topic and its been brought up by a few other peeps so maybe its important, maybe not..i dont know but to simply answer your question...no i dont plan to drop the pan every time i want to service the fluid (which means i could change the fluids more often).
because of the x-brace...it was suggested by multiple people to install a drain for fluid flushes when a full service isnt required

aklim

Stupid question but is the fluid "worn out" where you are trying to change it?

WVZR-1

What doesn't work with this O2 bung? We've used them for years. I don't get it. There's nothing to "machine"!

Here's a typical O2 bung similar to what we use.

https://www.summitracing.com/parts/aaf-all34153

We use a new GM pan and the last few I've done were for 4T65e and the GM pan was certainly the least expensive and you could rely on the quality.

confab

To bad you can't drain the 4th clutch hub, the EPC and the shoddy clearances out of them.

mark970

i just bought the car a couple weeks ago...the trans seems to shift nicely but my mechanic said the fluid smells bad plus they filled the fluid half way up the dipstick tube. i'm slightly worried so yes i planned to flush the coolant a couple times a year for the first couple of years...

mark970

i have no idea what an O2 bung is...i will take a peak later but i need to get out and do my trans filter right now as major storms are planned for this afternoon and my 95 coupe needs its spot back in the garage asap!! haha

update:i checked out the link, thats a great idea! i will look into that but as of right now i need to get the filter changed asap and the car back on the ground (bad weather coming).

WVZR-1

I believe we pay maybe $3 or very close to that for what we use. I don't believe I have any now and my last purchase was sometime ago. Maybe the asking in the link is very high!

SJW

I don't recall where or when I saw it, but one clever fella posted a photo showing how he had drilled a hole in the floor of his pan, then tack-welded a castle nut upside-down to the floor above the new hole, and then used a gasketed drain plug with threads to match the castle nut's thread. The notches in the castle nut would allow all of the fluid to escape, draining the pan all the way to its floor. I thought that was a pretty slick solution, and I'd have done the same thing if I owned anything that had an automatic transmission.

Live well,

SJW

ColaBear

I bought a nice powder black replacement on fle-bay for around $25 with a built in drain plug. Since I was going to change the filter I needed to drop the old ban anyway. Now I can drain the pan before dropping to change the filter or I can just do a drain and fill to add a little fresh trans oil.

mark970

this is exactly my goal! thanks

i just did my filter change, didnt have time to buy or manufacture a drain...there is a storm coming and i needed to get both my cars back in the garage...oh well i will do another trans fluid next spring (this is a new car for me so i want to make sure i flush the fluids well)



But can i ask...there was an exhaust clamp in the way on the passenger side, near the Cat (stock system other than mufflers)...After breaking the clamp free, it still seemed to be connected somehow, maybe by a pin/detent of some type. what do people do with this bracket?? its def in the way and can easily compromise the job as it requires maneuvering the pan/gasket into place around this. 1992 convertible automatic

Joe C

mark970 - just want to throw this out - food for thought. i'm thinking that you will also need to drop the X-brace to change the fuel filter. might as well kill two birds with one stone...

ColaBear

@mark970,

I believe the clamp is tack welded onto the exhaust at the factory. If you have the car up on a lift or jack stands, it's only 6 bolts to drop the exhaust after loosening that clamp and then two bolts on the driver side flange. Though with your vert, you will need to drop the X-Brace to pull the exhaust and I'm not sure haw many bolts are used there. I have a coupe.

mark970

I needed to do a trans filter change so i had to drop the brace. im sure in the heck not taking out the exhaust for a filter change! haha

i was able to bend the clamp out of the way...but seriously that thing is even in the way of removing the nut as well as installing the pan.
poor design or designed like that on purpose to discourage DIY'rs???

The Brace is 16 bolts and 4 nuts

mark970

its even more than that, need to remove the drivers side Cat...so while i have the brace off i'm going to have the cats removed, an x-pipe installed and the fuel filter changed. sure seems like a lot of wasted effort...

Joe C

just keep saying, "i'm having fun, i'm having fun, i'm having fun...."

mark970

all i can keep thinking right now is "i will never do a filter change again..."

383vett

The pan has a magnet on the bottom. You won't nred a magnetic drain plug. I use a stock 4l65e pan on my 4l50e. It has a built in drain plug.