Adrian07 New Member 5 Member For: 1y 7m 18d Posted 08/02/24 11:20 PM Share Posted 08/02/24 11:20 PM G'day Seems to be so much contradictory information Are the cam sprocket bolts reusable? Or must they be new? Replaced the cams on my engine and the bolts looks fine. Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 16,097 Member For: 10y 7d Gender: Male Location: South Australia Posted 08/02/24 11:53 PM Share Posted 08/02/24 11:53 PM I've reused mine plenty of times with no issues. Be sure to use the right size etorx socket so you don't wreck the head. 60 to 65lbft to do them up. Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,199 Member For: 16y 9m 26d Gender: Male Location: Melbourne Posted 09/02/24 12:08 AM Share Posted 09/02/24 12:08 AM Best way to be sure is to check the specification of the bolts and the torque specification for it's application and if it exceeds the yield point then you know it's "stretched" and not re-usable... if it doesn't stretch then it's re-usable Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 16,097 Member For: 10y 7d Gender: Male Location: South Australia Posted 09/02/24 01:11 AM Share Posted 09/02/24 01:11 AM How can you measure stretch on a bolt that's already been done up? You can't just assume that it is or isn't stretched, you have to measure it. Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,199 Member For: 16y 9m 26d Gender: Male Location: Melbourne Posted 09/02/24 02:14 AM Share Posted 09/02/24 02:14 AM True, you do need a "before" measurement to know if it has actually stretched, and of course very accurate measuring equipment... but I'm not asking to measure it, I'm saying to check the specification and ASSUME it has stretched if it exceeds the yield point and in that case throw out and replace them... if it doesn't exceed that point, then re-use them. No measurement required. Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 16,097 Member For: 10y 7d Gender: Male Location: South Australia Posted 09/02/24 02:56 AM Share Posted 09/02/24 02:56 AM The general consensus from various spec sheets is 50 to 60lbft is about 75% of the bolts maximum, assuming they are a grade 10.9 bolt. Kinda wide range there but good enough for me. Haha I suppose I could go out there and see how strong they actually are but cbf right now. Also I'd have to find a farked cam or two to snap it off in, so I'd only have a few tries, plus I like to keep those kinda bolts....my precious Link to comment Share on other sites More sharing options...
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