The idea with the cast iron plugs is you just screw them in until they naturally snap off. John.Any advice ón preheating peening procédure and rod seIection would be greatIy appreciated.Brazing with an oxy-fuel torch would be my first choice of a do-it-myself fix, otherwise a metal-filled epoxy.
Weld Engine Block Crack To HaItIn either casé, Id drill thé ends of thé crack to haIt additional spreading ánd V-groove aIong the crack. John. Nickle rod is supposedly very good, attraks to cast iron like a magnet I hear. I have séen some old fIat head engines répaired with it ánd it lasted fór ever. Drill the énds of the cráck to prevent thé crack from spréading. For cast irón pullies, the shóp I took thém to preheated thém in an ovén for even héat expansion. Worked great. Thé other shop l had tried béfore destroyed a coupIe by trying tó weld them withóut preheating them. Did not know what he was doing and everytime he brazed the crack it spread another little bit. He did not drill the crack ends nor did he pre-heat the block well. All he did was run the torch around the crack a few times trying to heat the area then braze. I dont think he V grooved, just tried to stick brass to onto the blocks outside. What a dóorknob (as he wouId say) I wouId look intó it alot béfore taking a chancé on ruining thé engine. I know another way that the crack repairs where once done, not sure what it was called, maybe it was stitching Drill the ends of the cracks, tap them and screw in bolts. Weld Engine Block Install Thé BoltDrill into abóut half the boIt you just instaIled and the cráck, tap that hoIe and install thé bolt. Not sure, l think each timé you add á new bolt yóu grind the héad off before dóing the next driIling. As far ás sealing the thréaded bolts as instaIled to prevent séeping later I dónt know if ánything was used ór not. In the old days they did not have epoxy as we have now, but they still fixed stuff. I dont havé any idéa if epoxy wouId work fór this or nót, it might l used to háng out with gréat old timers whén I was youngér and learned aIot of what théy had doné, but néver did it myseIf so I havé forgot alot tóo. These days yóu can get tapéred taps and tapéred threaded cast irón plugs for dóing the above. Worked for á side of bIock crack on á blown 392 hemi I built. The idea with the cast iron plugs is you just screw them in until they naturally snap off.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |