crack?? help
04-03-2008, 07:03 PM
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crack?? help 2002 ws6. While tightening new head bolts I heard a crack sound this was on 2 separate head bolts on the same side. It was quite tight but still about a quarter inch off the head and after the sound it loosened up. I wasn't going fast and did a little on one then moved to the next. I did have anti seize and they were new bolts, just worried about the noise. How easy is it to crack the block and how can I tell If I did? Its still not finished yet so I cant run it to see if theres any problems.
04-03-2008, 07:09 PM
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did you make sure there wasn't any fluid in the bolt holes.They have to be absolutely clean and dry,or you can crack the block.If you heard 2 pops on 1 side,I would pull that head back off and check for damage.
04-03-2008, 07:37 PM
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I did blow them out with compressed air but I guess I'm just not to sure. I did have a bunch of anti seize on the bolts. It loosened up after the noise and I torqued them without problems, how hard would I have to be pushing to crack the block. Is their any way I can test the bolt holes to see If something cracked?
04-03-2008, 08:22 PM
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did you use any lubricant on the bolts and or bolt heads. at the dealership i work at when the bolts arent lubricated prior to installation, there will be a very crisp cracking noise. naturally check for cracks in the block but i think this is what you heard.
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04-04-2008, 06:10 AM
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They were the m11 bolts, and they didint have a spongy feeling to them. They did have a copper anti seize lube new m11 bolts, and it was a pretty crisp noise. How much force is needed to crack the block? I guess I'll pull the head tonight and take a look, I'm just not sure that I'll be able to see much being that I put anti seize on the bolts.
04-04-2008, 09:22 AM
#9
I had similar issue with stock bolts. There was something red in color on the threads. When I ran them in and they got difficult to tighten, I backed them out a little and started tightening again and they went in easy. No issues so far and torque to yield they get pretty tight estimate 80-90 ft lb.
I blew the bolt holes out with compressed air 3 or 4 times, until I couldn't get anything out of them.
I blew the bolt holes out with compressed air 3 or 4 times, until I couldn't get anything out of them.
04-04-2008, 02:18 PM
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What happened is I think you overtorqued the stock bolts, it happened to me once.right on the last bolt on the last head i was installing..I heard it pop and then it got "loose" I thought I cracked the block.... so I removed the head ( luckily the motor was out of the car ) and found that I had twisted the bolt in half.....the remainder of the bolt was stuck stuck inside of the block pretty deep. I had to use an EZ out to extract the broken half.. Try loosening that bolt, I bet you snapped it in half. your block should be fine but that head is going to have to come off anyway.
04-04-2008, 02:42 PM
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well I didnt snap any bolts and they are new bolts that came with the trickflow top end set. I just got the head off and really cant see in there to look for damage. Any suggestions ?? They had some moisture on them, I guess I wasnt able to blow the holes totally clean. I think I'm gonna try putting the air nozzle up to the bolt hole to see it the coolant on the inside bubbles. I'd love any info or suggestions.
04-04-2008, 08:16 PM
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well i took it back apart and checked it the best I could, several different ways. And convinced that everything is fine! We'll see when I start it up. But really cleaned it out again did everything except run a tap through it ( only cause its impossible to find a 11-2.00 tap!!!!!!) so heads are back on. I'll post the outcome when i run it. rocker, intake headers exhaust radiator yet to go on, any tips or pointers would be great.
