| Re: Would an Eagle crank have a different thread for the damper bolt? |
Subject: Re: Would an Eagle crank have a different thread for the damper bolt? by dan0617 on 2009/3/24 20:56:36 My sbc eagle forged crank uses the same bolt as a stock L98. I once screwed up the threads on a stock L98 crank, had to drill it out one size bigger and rethread it. Worked fine. If I were you I, too, would try to re-tap it with the stock size bolt tap. Tap on the tap with a hammer and try to get it started, and if it starts in I'd run it the whole way in. If that works I'd put locktite on the bolt and torque it up 10 ft lbs or so tighter than called for by the repair manual. If you get that then you know it is fine. If you only get close to or a couple ft lbs past the called out torque setting and it strips then you know it never would have held. Drill it out and tap it 1 size bigger, put in a new bolt to match the new threads, and be done. As a side note, sometimes the stock bolts aren't long enough to engage most of the threads on an aftermarket crank. I know on my new crank the hole seems tapered a little and the threads start back farther in than on the stock crank. Perhaps you only engaged the first few threads, and the bolt took them out when it came out. There might be plenty of good thread back in there that you can't see, and a longer bolt is all you need. Tap it with a hammer to try to get it started, maybe try that before trying to run a tap in at all. |
