Gadgetman Posted June 20, 2020 Report Share Posted June 20, 2020 What’s people’s thoughts on running an engine after a complete re-build, ie new can, followers , rebored etc etc. I’ve primed the galleries using a drill down the distributor hole to spin up the oil pump, got good oil pressure. No leaks. I’ve heard some say run it at 2000 rpm for 20 mins to bed the cam in. Some say don’t bother just take it out for a drive. I’m aware triumph didn’t take much care with new engines but after lots of £ going into this one I want it to be bedded in correctly. what’s the opinions from those that have been here before? Link to comment Share on other sites More sharing options...
Nigel Clark Posted June 20, 2020 Report Share Posted June 20, 2020 There should already be assembly lube on bearings and camshaft lobes. Squirt a little engine oil into the plug holes to lubricate the pistons and rings. Before start up, spin the engine on the starter with plugs out to get oil pressure and distribute the oil in the bores.. Fit the plugs, start and run for 20 mins at 2,000rpm. This ensures plenty of oil movement inside the crankcase to splash lubricate the cam lobes during this critical phase. During this period, keep a close eye on the temp gauge in case of an airlock restricting coolant circulation and keep checking for leaks. The only reason to use a different procedure would if the camshaft manufacturer gave different instructions. Good luck! Nigel Link to comment Share on other sites More sharing options...
Pete Lewis Posted June 20, 2020 Report Share Posted June 20, 2020 yes what happened on the assy line/test bench and what you do in your garage are two distinct variables Ha ! Pete Link to comment Share on other sites More sharing options...
Gadgetman Posted June 20, 2020 Author Report Share Posted June 20, 2020 5 minutes ago, Nigel Clark said: There should already be assembly lube on bearings and camshaft lobes. Squirt a little engine oil into the plug holes to lubricate the pistons and rings. Before start up, spin the engine on the starter with plugs out to get oil pressure and distribute the oil in the bores.. Fit the plugs, start and run for 20 mins at 2,000rpm. This ensures plenty of oil movement inside the crankcase to splash lubricate the cam lobes during this critical phase. During this period, keep a close eye on the temp gauge in case of an airlock restricting coolant circulation and keep checking for leaks. The only reason to use a different procedure would if the camshaft manufacturer gave different instructions. Good luck! Nigel Yup lots of oil and cam lube used along with Graphogen on the journals and rocker shaft during assembly! Link to comment Share on other sites More sharing options...
Gadgetman Posted June 20, 2020 Author Report Share Posted June 20, 2020 Also fitted Jigsaw cam followers with the hole in the side to help with cam lobe lube Link to comment Share on other sites More sharing options...
Nigel Clark Posted June 20, 2020 Report Share Posted June 20, 2020 51 minutes ago, Gadgetman said: Yup lots of oil and cam lube used along with Graphogen on the journals and rocker shaft during assembly! Sound like it's good to go! Nigel Link to comment Share on other sites More sharing options...
Colin Lindsay Posted June 21, 2020 Report Share Posted June 21, 2020 16 hours ago, Gadgetman said: Yup lots of oil and cam lube used along with Graphogen on the journals and rocker shaft during assembly! Big variation in the price of Graphogen. I paid £27 for a 125g tube, and prices online that I checked yesterday were varying from £29.50 for a 50g tube right up to £43 for the larger. Link to comment Share on other sites More sharing options...
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