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Conrods


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Posted

Need some advice and I'm sure it's been covered before I want to check the conrod shell bearings on my 1100f I have the torque settings but do they have to be degreed in as well? Also do these bolts need replacing thanks in advance 

Posted

'Degree'd in' - never heard that term relating to con rod bolts ! Also ive never seen any spec's or recommendations for replacement - certainly in a stock engine that isn't being continually buzzed to the max, they are lifetime fitments IMO. But if they are subject to high stresses a lot and you do annual tear down inspections - measure a new set length (fitted and torqued), and compare the used ones to that figure. I'd replace any that have additional stretch more than 2-3 thou. - they are cheaper than blocks and pistons!

Posted

The engine only has 50k on it the reason for the check I did a compression check on the motor as its been sitting on a stand for a while i checked all four barrels twice then realised there was no oil in the sump as I had swapped out the sump pan 8 years previous  the engine was never started just spun over from the starter motor  I've seen vidios that show you torque up the conrods to the book then tighten up to say 70 degrees but there's nothing in the Manuel Some say the bearings probably still be OK but I'm not so sure

Posted

Just do them to the torque setting in the book, no need for the plus 30 degrees or what ever. Never read any recommendation to replace them. 

You can find a pdf of the factory workshop manual on line that'll you everything you need to know 

 

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