Buster91dg Posted March 14, 2016 Report Posted March 14, 2016 Have a banshee rebuilt the whole motor maybe 10hrs ago and came across a leak from the case half bolt I cleaned it all up and put Yamaha bond along the threads where the gap is as pictured seems to be running fine to me do I have to split cases? To seal up the case halfs better. Also where the rag is looks like there is a little hole from casting the lower half engine case looks like it was drilled in 1/4 of inch. There's a few it's from the factory where they mold the cases but it looked like a tiny crack where it was leaking so I put some jb weld for aluminum. What are your thoughts. Quote
Larry's Shee Posted March 15, 2016 Report Posted March 15, 2016 Do a leakdown test. If that's good, and it's not leaking lots, I wouldn't worry. Clean that area good with brake cleaner then 3bond it. That hole is to drain water from top of engine. Quote
Buster91dg Posted March 15, 2016 Author Report Posted March 15, 2016 Do a leakdown test. If that's good, and it's not leaking lots, I wouldn't worry. Clean that area good with brake cleaner then 3bond it. That hole is to drain water from top of engine. The hole doesn't go though it just from when they caster the case you can see looks like there spots where it was drilled and stopped. It looks cracked there dk how than could of happened Quote
87sheerips Posted March 15, 2016 Report Posted March 15, 2016 Oil residue from gas leaking from overflow tubes. Turn gas off. It will go away. Quote
Buster91dg Posted March 15, 2016 Author Report Posted March 15, 2016 It's under the crank where it is I saw it leaking Quote
sleeper06 Posted March 15, 2016 Report Posted March 15, 2016 If it's in fact leaking from one of those studs its not sealed properly . Either you didn't clean it well enouph for sealer to bond of didn't do it properly Quote
Buster91dg Posted March 15, 2016 Author Report Posted March 15, 2016 If it's in fact leaking from one of those studs its not sealed properly . Either you didn't clean it well enouph for sealer to bond of didn't do it properly Cleaned it all spotless with aluma bright and then when around with thinner to get all the old bond off will I be good if I can get it sealed up? Quote
J-Madd Posted March 15, 2016 Report Posted March 15, 2016 It's never the cases or studs leaking. Like JD said, it's coming from the carbs. Quote
Buster91dg Posted March 15, 2016 Author Report Posted March 15, 2016 Yeah the bottom of the carbs are dry and I have over flow hoses on it that run out in the back of engine near swing arm Quote
trickedcarbine Posted March 15, 2016 Report Posted March 15, 2016 Funk is dripping on top of the cases and working through the drain hole right between where the reeds sit. Quote
elconor Posted March 16, 2016 Report Posted March 16, 2016 Ive had the studs leak tranny fluid before. I left it that way till the next tear down. Never had a problem because of it. Obviously mine didnt seal perfect around a stud so it leaked a tad. Its fine. Quote
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