Mark69 Posted September 28, 2014 Report Share Posted September 28, 2014 In the garage as we speak . I am in the throws of rebuilding my engine , I have got as far as crank in just about to fit piston to con rods I am using grahogen on all bearings. I was going to use engine oil on the bores and pistons, but on the tube of grahogen it reads you can use this as well. Would this be advisable Thanks Mark Quote Link to post Share on other sites
Mark69 Posted September 28, 2014 Author Report Share Posted September 28, 2014 Sorry should have said New rings , used piston and rebore on block. Mark Quote Link to post Share on other sites
Guest ntc Posted September 28, 2014 Report Share Posted September 28, 2014 IMHO No Quote Link to post Share on other sites
Rob Salisbury Posted September 28, 2014 Report Share Posted September 28, 2014 To get those rings to bed in you want metal to metal contact, so just a light smear of clean engine oil is sufficient Quote Link to post Share on other sites
Motorsport Mickey Posted September 28, 2014 Report Share Posted September 28, 2014 +1 for the straight engine oil. The additive rich Graphagen has lots of slippy stuff in there which is good for bearings and bad for piston rings trying to bed in to freshly honed surfaces. Read the posts regarding the first 20mins of the engines life with regard to camshaft and followers bedding in. If you have a used camshaft and followers it won't apply but try and make sure your oil has lots of ZDDP anyway to help the tappets life and then review BMEPon the search facility for running to help bed in the new piston rings and rehoned cylinders which you will need. Â Mick Richards Quote Link to post Share on other sites
Mark69 Posted September 28, 2014 Author Report Share Posted September 28, 2014 Thanks Guys All pistons in used smear of engine oil on both rings and bores. There's a rasping noise when turning over I assume its the rings on the honing marks on the walls. Thanks again Mark. Quote Link to post Share on other sites
peejay4A Posted September 28, 2014 Report Share Posted September 28, 2014 Rasping doesn't sound right. A sort of hissing sound is what I'd expect. Quote Link to post Share on other sites
Mark69 Posted September 28, 2014 Author Report Share Posted September 28, 2014 Rasping was the first word that came to me but hissing is probably more like it. Mark. Quote Link to post Share on other sites
Guest ntc Posted September 28, 2014 Report Share Posted September 28, 2014 Thanks Guys All pistons in used smear of engine oil on both rings and bores. There's a rasping noise when turning over I assume its the rings on the honing marks on the walls. Thanks again Mark. Mark That's fine Quote Link to post Share on other sites
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