Martin v Posted August 27, 2017 Share Posted August 27, 2017 No 1 post bolt snapped, luckily at walking speed. No other visible damage, ran ok but noisy at top end. Easily replaced but any idea why it may have snapped, anything else I need to check. It may have just worked loose through use as no obvious cause. Car has steel posts, regular tappets and steel shaft. Link to comment Share on other sites More sharing options...
Martin v Posted August 27, 2017 Author Share Posted August 27, 2017 .. and what is the rocker bolt spec please? Length I know and assuming Grade 8 but what thread?Thanks Link to comment Share on other sites More sharing options...
Bricol Posted August 28, 2017 Share Posted August 28, 2017 The markings on the bolt head, assuming standard hex-head bolts will tell you grade. Unlikely to be metric markings (such as 8.8) as I think crossflow is old enough to be using UNC threads - which if your location is correct, are more easily available there than in the UK. As for size, a quick measure across the outer diameter of the threads will tell you. Link to comment Share on other sites More sharing options...
OliverSedlacek Posted August 28, 2017 Share Posted August 28, 2017 Unusual failure, unless there was some other problem (like not torqued up properly). I'm assuming you will replace all four. Link to comment Share on other sites More sharing options...
Martin v Posted August 29, 2017 Author Share Posted August 29, 2017 No idea of the cause. Yes, four new and torqued correctly should do it. Link to comment Share on other sites More sharing options...
Martin v Posted September 7, 2017 Author Share Posted September 7, 2017 Bolt out easy, touched with a drill thinking I'd need to use an extractor and it moved. Managed to get out by hand amazingly which may explain why it snapped as it was pretty loose.I am replacing bolts with correct ARP's. Maybe overkill but no harm. Two Questions.1. Loctite or not? If so which?2. With steel posts would torque setting of 30 ft lbs seem right?thanks in advance. Link to comment Share on other sites More sharing options...
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