73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 1984k30 on January 24, 2011, 03:00:19 pm
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I am going to change my tranny fluid and filter and want to put a drain plug in. I got one at my local parts store but am worried about it giving me problems. My main concern is that it just has a o ring on the bolt you screw in. It does not have a stop and the more you tighten it the o ring will just crush maybe causing it to fail over time. The bolt is not a pipe thread so I don't think teflon tape will help? Anyone use one and not have a problem with it leaking. I may just weld a nut to the pan and get a oil pan bolt and gasket and use that.
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The o-ring should hit and collapse some small amount...like .030" and then the head or something else should bottom out. If it truly does just crush the o-ring more and more its not properly designed. There should be an oring groove in the nut piece to take up like 75% of the o-ring's thickness if I'm picturing it correctly. I guess you could take an old oil pan and cut the sheet metal and weld it to yours. I think there was a post recently somewhere on here with a link to a pan that had a drain plug. Seems like it would be worth a few bucks to save you all the trouble.
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I think the groove is what it needs. I think I will take it to a friend of mine and him put it on his lathe and cut a groove in it.
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They usually leak. What trans do you have? You'd be better off with an aftermarket pan.
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It is a 4l60. I seen b&m makes a pan but not sure I want to spend 200.00 on it right now. I thought I could get away with a ten dollar drain plug kit but may not be worth it if it starts leaking and I end up having to buy another pan because I drilled a hole in mine.
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http://www.summitracing.com/parts/TCI-378011/
that's just 2 min of searching. I didn't check to see if that's the cheapest.
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My B&M 2in deeper pan leaks, so maybe a drain plug isn't a good idea. Unless mine is bad...
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you can get the gasket thats on oil pan drain plugs for a couple cents at the auto store. and do what you said get a similar size bolt and nut weld the nut on and be done
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http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=330423628673&viewitem=
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Vile do you think that pan would be ok? Seems like it would be china junk to me. Seems like every one I ever talked to about cheap chrome engine oil pans always said they leaked but I'm up to giving it a shot. Maybe the expensive ones are made in china too? Also what kind of gasket to you think is best to use. cork, rubber, paper or garlock material.
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i have one that is either summit or jegs brand, it is cast aluminum and has thick flanges to help against leaks. I like it and it has a drain plug.
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Why don't you just use a crush washer? I've tried orings before. They don't seal at all. As soon as a little heat builds up inside the case, it will push that oring right out of the way. A crush washer will work real well. Alternatively, you can just slather a normal washer up with some RTV. That also seems to work very well.
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That was just a cheap one I would at least use an aluminum one like this
http://cgi.ebay.com/ebaymotors/GM-700R4-POLISHED-ALUMINUM-TRANSMISSION-PAN-8493-_W0QQcmdZViewItemQQhashZitem4cefa7c348QQitemZ330438263624QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories
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Mine...http://www.summitracing.com/parts/SME-1008R/
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The pan in Beastie's link looks like it is done right and would not have any problems sealing. looks stout too.
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but 140 :o
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I've actually used that $40 eBay aluminum pan. I never had an issue and it's actually really nice.
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Im not saying other pans are worse. Im just giving a different option to the OP because 1. It has different features and 2. Ever said "I wish I saw that one instead"?