Worst LS1 day ever!
03-29-2002, 04:59 PM
#21
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Re: Worst LS1 day ever! </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Mach Go:
<strong>Someone correct me if I'm wrong....but dosen't the crank bolt need to be replaced WHENEVER it is removed??? It is my understanding that once the bolt is threaded in and torqued it is designed to stretch thereby making it useless once removed.
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes, the crank bolt does get replaced, however, the old bolt is used first to seat the pulley on the crank then removed and finally a new bolt is torqued on there in a multi stage tightening sequence (xlb ft then y degrees further). <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
<strong>Someone correct me if I'm wrong....but dosen't the crank bolt need to be replaced WHENEVER it is removed??? It is my understanding that once the bolt is threaded in and torqued it is designed to stretch thereby making it useless once removed.
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes, the crank bolt does get replaced, however, the old bolt is used first to seat the pulley on the crank then removed and finally a new bolt is torqued on there in a multi stage tightening sequence (xlb ft then y degrees further). <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
03-30-2002, 12:53 AM
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Re: Worst LS1 day ever! I had a pal who works at a machine shop help me out today. For starters, he was really suprised at how soft the metal on the crank was. He drilled out the bore, and tapped it for a 3/4" thread. The thread starts at the very end of the snout, and goes in about three inches. We then used a three inch, grade 8 bolt that was completely threaded. He also custom machined me a stainless washer to seat against the pulley. So now the crank has fresh threads, and I now have 2 1/2 " of thread holding the bolt as opposed to the stock bolt that only used the bottom 1/4" or so. After applying a liberal amount of red lock-tite, I torqued the bolt to 250 ft/lbs and put the car back together. How did it turn out? The TR 224/224 112 cam pulls strongly from 4000 rpm up. So far so good!
03-30-2002, 01:15 AM
#24
I can shift faster than you.
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Re: Worst LS1 day ever! That is great to hear! There is always a light at the end of the tunnel. LOL
I'm glad you like the TR 224. I love mine. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
I'm glad you like the TR 224. I love mine. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
03-30-2002, 01:52 AM
#25
Re: Worst LS1 day ever! Man thats great to hear. It was getting depressing there for a minute...
I tell ya what though, I know that feeling you were having. I don't think there is a worse feeling in the world when you think/know something IMPORTANT is permanately damaged and it's gonna take a lot of money/labor to fix. But, then again I can't think of a better feeling in the world when it's only half of what you thought it was and it gets all fixed <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
I tell ya what though, I know that feeling you were having. I don't think there is a worse feeling in the world when you think/know something IMPORTANT is permanately damaged and it's gonna take a lot of money/labor to fix. But, then again I can't think of a better feeling in the world when it's only half of what you thought it was and it gets all fixed <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
