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MX, SX & Off-Road Discussions
General Moto | Off-Topic Posts
Rebuilds gone wrong
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[QUOTE="gwcrim, post: 685595, member: 35528"] Oh here's another one..... I had a partner on a Bonneville Salt Flats speed racer. He supplied me with a 100" Sporster engine in which he had invested many, many thousands of dollars. I had to install the primary drive. But I'd never done one before. After struggling with a pile of parts and the repair book, I got it all bolted together. We first fired the engine on Friday and left from Ohio on Saturday for dyno tuning in Denver with Aaron Wilson. After several dyno pulls, we pull the clutch cover to for an inspection and it's overflowing with oil! So we pull the primary drain plug and the magnet is FULL of stuff. I about poohed in my pants.:uh: We pulled the cover an upon inspection....... I had left out a spacer that fits between the front sprocket/alternator cover and the crank shaft. This allowed engine oil to fill the primary. This also allowed the crank to have an in/out movement of about 1/8". This destroyed the stator and the alternator magnets. Again, I about poohed my pants.:uh: We pillaged a spacer from a Buell donor bike in Aaron's shop, cleaned up the mess, and reassembled. The bike eventually dyno'd about 150 HP. A bit lower than what we expected but at least it was alive. We managed to get the bike to 167 and set two records. Come to find out the pistons & cylinders were scored as well. Eventually got the bike to go 180 with a good top end. Oh and then we're at the Flats and the cable that activated the remote petcock got pinched. The result was that it might shut at any inopportune moment. So there I am buzzing along at speed with one hand on the throttle and the other holding the petcock open. Good thing it was on the left side. Again, I about poohed my pants. ;) [/QUOTE]
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Forums
MX, SX & Off-Road Discussions
General Moto | Off-Topic Posts
Rebuilds gone wrong
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