clivegto Posted February 13, 2019 Share Posted February 13, 2019 (edited) Been to see Brian McCall of Centuriion Motorcycle Projects today to pick my barrels & cams up. The barrels have been vapour blasted & the cams have been supper finished to make them slipper than a very slippery thing that is slippery (like GP gear boxs) will be doing gear clusters as well. He also has a very nice GS1000. Edited February 13, 2019 by clivegto 5 Quote Link to comment
Simbec1863 Posted February 13, 2019 Share Posted February 13, 2019 Look bloody good they do Clive,almost too nice to fit 1 Quote Link to comment
clivegto Posted February 13, 2019 Share Posted February 13, 2019 33 minutes ago, Simbec1863 said: Look bloody good they do Clive,almost too nice to fit The finish is extraordinary will be getting more stuff done, this was a bit of a test. 1 Quote Link to comment
Allspeeds Posted February 13, 2019 Share Posted February 13, 2019 I did my barrels the same mate look good when fitted cams look nice were they done in a rumbling tank? Quote Link to comment
clivegto Posted February 13, 2019 Share Posted February 13, 2019 1 hour ago, Allspeeds said: I did my barrels the same mate look good when fitted cams look nice were they done in a rumbling tank? Yes with ceramic beads then a load of chemicals. Quote Link to comment
Allspeeds Posted February 15, 2019 Share Posted February 15, 2019 How much for the cams doing mate? Quote Link to comment
clivegto Posted February 15, 2019 Share Posted February 15, 2019 https://www.facebook.com/centurionmotorcycleprojects/ Give him a call for priceing, he's a real nice bloke. Quote Link to comment
clivegto Posted February 17, 2019 Share Posted February 17, 2019 Decided not to go any further with the 1127L bottom end with the snapped stud. Was able to move the bottom end on but kept the clutch, sump & oil pick-up. Got a b12 bottom end in a deal which is what I wanted to use anyway. Stripped it down & removed all the cylinder studs, these one's weren't to bad to get out. Presumably because it's a lot newer. Quote Link to comment
clivegto Posted February 21, 2019 Share Posted February 21, 2019 Got my self a starter clutch puller which arrived in the post today. Starter clutch was fairly fast it wasn't in a hurry to leave the crank. Quote Link to comment
clivegto Posted March 2, 2019 Share Posted March 2, 2019 (edited) Got the over size valves, cam wheels & the followers back from been super finished. There slippery than a very slippery thing that is slippery & shiny. Big thanks to Brian of Centurion Motorcycle Projects. Edited March 2, 2019 by clivegto Quote Link to comment
Gixer1460 Posted March 2, 2019 Share Posted March 2, 2019 Don't do Faceache but looked at their site and couldn't find any info on the 'superfinishing' process - maybe it's some sort of blasting come polishing? Anyone confirm or clarify? The polishing aspect worries me as things like cams and valve stems have a certain 'roughness' to hold on to oil for lubrication......too slick, loss of oil = metal to metal contact? And why is no one else doing it - particularly engine tuners? Happy to be educated! Quote Link to comment
dupersunc Posted March 2, 2019 Share Posted March 2, 2019 (edited) 27 minutes ago, Gixer1460 said: Don't do Faceache but looked at their site and couldn't find any info on the 'superfinishing' process - maybe it's some sort of blasting come polishing? Anyone confirm or clarify? The polishing aspect worries me as things like cams and valve stems have a certain 'roughness' to hold on to oil for lubrication......too slick, loss of oil = metal to metal contact? And why is no one else doing it - particularly engine tuners? Happy to be educated! The parts are put in a big tub with a ceramic slurry and agitated and tumbled for 6-10 hrs. The process is used quite widely in motorsport. I'm not convinced by it. I think there are benefits to it, such as fatigue life and oil windage. We had a huge number of race car gear ratios superfinished a few years back, to try and make them last longer and reduce drag. Drag reduction was impossible to quantify, gear life if anything was reduced. I surmised like you that they was no surface for the oil film to cling to so wear was accelerated. Edited March 2, 2019 by dupersunc Quote Link to comment
clivegto Posted March 2, 2019 Share Posted March 2, 2019 (edited) It is supposed to take the rough spikes of metal but leave the dimples which hold the oil. Done with ceramic beads in a vibrating tub then a 2 stage chemical prosese. Every thing that has been done measures the same after it has been done as before it was. Edited March 2, 2019 by clivegto Quote Link to comment
clivegto Posted March 2, 2019 Share Posted March 2, 2019 Stripped some 36mm mikunis down I took of a gsxr 1100L (I bought a long time ago) to get them vapour blasted, it's a lot cheaper to take them apart to get the job done quickly as well. Quote Link to comment
Dezza Posted March 3, 2019 Share Posted March 3, 2019 What's oil windage? It sounds like a bowel condition Quote Link to comment
dupersunc Posted March 3, 2019 Share Posted March 3, 2019 (edited) 4 hours ago, Dezza said: What's oil windage? It sounds like a bowel condition It's not a laughing matter to us sufferers... Windage is the drag on the crankshaft as it spins through a heavy mist of oil in the crank case. A lot of oil clings to the rough surfaces of the crank webs which adds a lot of weight and inertia a 10,000rpm. Superfinishing the crank and rods mean less oil clings to the crank. It also means the crank has less drag going through the oil mist. Superfinishing can give decent power gains here. Same principle with the gears, possible down side, is that the gears rely on the oil mist for lubrication. Edited March 3, 2019 by dupersunc 1 Quote Link to comment
clivegto Posted March 3, 2019 Share Posted March 3, 2019 If you look at the pic of Brian's bike the green thing in the back ground is the vibrating machine with the ceramic beads in. As Dunc says takes about 10 hours after that there is no change. Quote Link to comment
clivegto Posted March 11, 2019 Share Posted March 11, 2019 Got the big valve cylinder head back together with the aid of the special valve tool. 1 Quote Link to comment
Allspeeds Posted March 11, 2019 Share Posted March 11, 2019 I bought one of the by pure accident there soooo good and easy 1 Quote Link to comment
clivegto Posted March 17, 2019 Share Posted March 17, 2019 Finally got the ape cylinder studs only took 3 months, some sort of problem at ape hq. Super finishing is done but haven't got the stuff in these pics back from Brian yet. Got him to vapour blast the carbs as well. I stripped them down before handing them over for cleaning. 7 Quote Link to comment
FJD Posted March 18, 2019 Share Posted March 18, 2019 Yes my uncle has the same problem with APE at the moment.... 1 Quote Link to comment
clivegto Posted March 19, 2019 Share Posted March 19, 2019 (edited) Just got this from a nice man in Germany. Mechanical scavenge pump. Edited March 19, 2019 by clivegto 1 Quote Link to comment
clivegto Posted March 25, 2019 Share Posted March 25, 2019 Picked the crank & all the other bits up that have been super finished from Brian at Manchester bike show as well as the carbs which have been vapour blasted. 2 Quote Link to comment
Allspeeds Posted March 25, 2019 Share Posted March 25, 2019 Lots to be on with there Clive Quote Link to comment
clivegto Posted March 25, 2019 Share Posted March 25, 2019 1 hour ago, Allspeeds said: Lots to be on with there Clive Yes & not to be rushed. Quote Link to comment
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