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My truck has a aluminum frame, I want to put a aluminum sleeve behind it when its welded up so i done get electralosis (or that bad) in between the 2 metals, everyone else thing a steel sleeve will be better. I wont tow anything but a empty 35' van someday, maybe. What would everyone else say that has expereiance with frame repair on a vintage truck, aluminum or steel? Or you 2 cents.
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Justin
'55 Bullnose KW, 262 Cummins, 5X4
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Post #77524
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Group: Administrators
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Justin,Most people use a steel sleeve because its cheaper, and its thiner so it fits better.With an aluminum sleeve you would have a pretty thick frame and might have some crossmember issues putting it all back together.Since its going to be a just for fun truck you could get away with sanding ( not grinding ) youre welds down smooth and just running it.A sleeve is a "just in case" piece, in case the weld fails when flexing with a load on it.Since you wont be hauling a load or twisting her up backing into a tight spot with a heavy load on her, you can probably skip the sleeve, just do a good weld.If you ever sell it, tell the next guy its cut and unsleeved, in case he wants to work it. If you want to go with a steel sleeve, take the time to paint it with POR15 or another good rust convertor.Paint the shanks ( the unthreaded part that passes thru the rail ) on youre new bolts too.If you stop rust, you'll stop electrolisis.John
John Costley
ATHS Online Division Charter Member
Sabattus, Maine
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Post #77530
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If, the old holes are in the frame and your going to re use them when you shorten it back to original, there really isn't any reason to glove it, now if you have some other issues, like cracks or extra holes to weld up ok, but I don't see a reason on your frame, put a couple more pictures up of it, if you do put a glove in 1/4 or 5/16 is what you would use for it, not alum, flanges are too thick and will pose cross member line up and bolt problems big time, in fact gloving an alum frame is always poses a problem as all the brackets are built for a certian height from the bottom flange to the side of the frame on a steel frame there is excess room inside the frame or bolts going thru, but on an a alum frame the excess room is eaten up by the thicker lower frame flange and when ypou glove this you may have trouble getting the bolts into the glove, I have a truck sitting here that that happend to and who ever put it together did not take that into consideration.
I can't get anymore out of it, I've got both sticks hot clear up to the knobs allready.
www.killcarb.org
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Post #77567
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We used to put aluminum colored roof patch sealant between a alum. frame and the insert to prevent corrosion. Dont know how it worked, never took one apart later.
Scott Waggoner
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Post #77581
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I read a old white repair manual years ago and they said to use roofing sealer which some of the frames then came in from the factory with a sliver looking tare looking sealer.
glenn akers
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Post #77606
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thanks for the info, theres so many un needed holes. I will put a sleeve in it i dont want to chance anything happining and it spliting in 1/2 goin 60 down the road. I wont sell it anyway.
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Justin
'55 Bullnose KW, 262 Cummins, 5X4
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Post #77613
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KW installed steel sleeves in aluminum frames from the factory when a Hendrickson suspension was ordered, so it must be factory approved. Aaron is dead on with the getting too think problem, 1/4" steel would be fine. I have used epoxy primer in the past to "insulate" steel from aluminum with good results. I have disassembled some aluminum to steel crossmembers and frames I painted 10 years ago with epoxy, and there is no sign of corrosion. I pulled the steel sleeve out of a 1977 KW aluminum frame a few years ago that had been painted with a red oxide primer in the steel, and gray primer of some sort on the aluminum, and the corrosion was minimal. Id go with the steel and use either the rook sealer or epoxy primer. on both pieces. Remember to paint AFTER welding. lol
Tony Martin - Secretary/Treasurer Deep South Chapter ATHS
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Post #77682
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It's almost impossible to use an aluminum sleeve inside of an al frame nothing aboutthe corss members will fit an AL sleeve would take up over 1" in width and about 1& 1/4 to 1& 1/2 in height. plus they would look horrible. blast the AL frame then use epoxy primer OR I think PPG has a great Aluminum primer at least I liked it on my freightliner when I painted it in 99
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Post #77889
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