welbike Posted April 29, 2021 Share Posted April 29, 2021 (edited) The valves on that site are not like the originals, they should have 2 grooves for the collets. Cheers, Lex Edited April 29, 2021 by welbike spelling Quote Link to comment Share on other sites More sharing options...
welbike Posted April 29, 2021 Share Posted April 29, 2021 Here some more pictures; Spares (cornucopia-enterprises.de) Lex Quote Link to comment Share on other sites More sharing options...
Ron Posted April 29, 2021 Share Posted April 29, 2021 If you expand the pictures at Feked, they have two grooves. I know the firm quite well as they're on my doorstep and I often go there ........There is always free coffee and doughnuts too!! Ron Quote Link to comment Share on other sites More sharing options...
flyingfleasteve Posted April 29, 2021 Author Share Posted April 29, 2021 Thanks gents, much appreciated! Free coffee and donuts, I’m sold!! Quote Link to comment Share on other sites More sharing options...
welbike Posted April 29, 2021 Share Posted April 29, 2021 Ok, that didn't work on my phone! Lex Quote Link to comment Share on other sites More sharing options...
flyingfleasteve Posted May 3, 2021 Author Share Posted May 3, 2021 As promised, an update on the build....... The barrel has now come back after boring and I treated myself to some more vapour blasting including cleaning up the head. I have run with the G3L rocker box as it’s tuck up under the tank but I still have the blind bushes to drift out (watch this space). Forging forward many of the control cables are fitted and things are really starting to take shape. I currently am having trouble getting the Gudgeon pin through the new small end bush but once rectify the barrel and piston can be fitted. The next steps are to get the the barrel on and the new valves lapped in and fitted...... 1 Quote Link to comment Share on other sites More sharing options...
rewdco Posted May 4, 2021 Share Posted May 4, 2021 You're doing a fantastic job Steve! 👍 Quote Link to comment Share on other sites More sharing options...
flyingfleasteve Posted May 4, 2021 Author Share Posted May 4, 2021 Thank you Jan, I am getting there slowly but surely. Quote Link to comment Share on other sites More sharing options...
flyingfleasteve Posted May 4, 2021 Author Share Posted May 4, 2021 Hi gents. I think I know the answer to this, but how much play should there be in the valve guides/valves? I think my exhaust value is a bit sloppy and I am considering replacing the value guide. Is it a fairly straight forward operation to conduct? Quote Link to comment Share on other sites More sharing options...
Ron Posted May 5, 2021 Share Posted May 5, 2021 Steve the standards book for the exhaust stem to guide clearance is:- At new = High.005" Low .003" and .007" is acceptable at overhaul. The figures for the inlet are less with .005" acceptable at overhaul. Difficult to measure the bore of the guide without proper equipment. Usually you can tell by feeling the rock at the valve open position. Ideally there should be next to none. Ron Quote Link to comment Share on other sites More sharing options...
Norton.rider Posted May 5, 2021 Share Posted May 5, 2021 (edited) Absolutely stunning work 🙂 Edited May 5, 2021 by Norton.rider Quote Link to comment Share on other sites More sharing options...
flyingfleasteve Posted May 5, 2021 Author Share Posted May 5, 2021 10 hours ago, Norton.rider said: Absolutely stunning work 🙂 Thank you! Much appreciated! Quote Link to comment Share on other sites More sharing options...
flyingfleasteve Posted May 5, 2021 Author Share Posted May 5, 2021 13 hours ago, Ron said: Steve the standards book for the exhaust stem to guide clearance is:- At new = High.005" Low .003" and .007" is acceptable at overhaul. The figures for the inlet are less with .005" acceptable at overhaul. Difficult to measure the bore of the guide without proper equipment. Usually you can tell by feeling the rock at the valve open position. Ideally there should be next to none. Ron Thanks Ron, I am not going to take any chances, I will replace both of them. I am just considering doing it myself or sending it to the shop 🤔 Quote Link to comment Share on other sites More sharing options...
Chris Hall Posted May 5, 2021 Share Posted May 5, 2021 To be honest, having seen your work so far I think you’ll be more than capable! Quote Link to comment Share on other sites More sharing options...
flyingfleasteve Posted May 8, 2021 Author Share Posted May 8, 2021 That’s Chris. I have now ordered a set of replacement valve stems, just to be belt and braces. I have decided to give it a go myself, nothing like learning in the job 🙈 My aim this weekend is to ream the small end bush so I can fit the piston and barrel. A few more hurdles but it’s all part of the challange! Quote Link to comment Share on other sites More sharing options...
flyingfleasteve Posted May 9, 2021 Author Share Posted May 9, 2021 Hi all. so my new valve guides and drift tools have arrived ready for replacement tomorrow. The new guides are in the freezer over night in readiness. Is it recommended to heat the head and current guides before removal? Or can I attempt knocking them out without heat? With the head being cast am I correct in thinking the guide and head will heat at a similar rate so adding heat for removal may not help? Quote Link to comment Share on other sites More sharing options...
welbike Posted May 9, 2021 Share Posted May 9, 2021 I haven't changed the guides in a long time, so can't remember but I think they did not have a ridge to stop them from going in too far? do you have the special spacer under the exhaust valve spring cup? there is a manual somewhere, that says, how far to press them in. Re. removal of the old ones, it might be better to machine them out untill wafer thin, and then just pull them out, or break them, then, no material from the head will be removed, and the new guides being too loose. Lex Quote Link to comment Share on other sites More sharing options...
Ron Posted May 9, 2021 Share Posted May 9, 2021 From the WOG3 instruction book. Ron Quote Link to comment Share on other sites More sharing options...
welbike Posted May 9, 2021 Share Posted May 9, 2021 Ok, the size of how much the guide should stick out is again in the Standards book, 1/2 and 5/8 , the 5/8 ofcourse, because of the special spacer, that is in my scan of the P/L above. Cheers, Lex Quote Link to comment Share on other sites More sharing options...
flyingfleasteve Posted May 10, 2021 Author Share Posted May 10, 2021 Thanks gents very helpful. Let’s see how I get on....... Quote Link to comment Share on other sites More sharing options...
flyingfleasteve Posted May 10, 2021 Author Share Posted May 10, 2021 A positive day today! 🙂 With some methodical workmanship I have now removed the old value guides and installed new ones. Valves now ground in and new valve springs fitted. Just some paint and the head is ready! The head has seen some extensive work and I am very pleased with the end result. 1 Quote Link to comment Share on other sites More sharing options...
Chris Hall Posted May 10, 2021 Share Posted May 10, 2021 It’s very satisfying to see the fruits of your labour. Next satisfaction is to listen to that thump, thump, thump. Quote Link to comment Share on other sites More sharing options...
flyingfleasteve Posted May 11, 2021 Author Share Posted May 11, 2021 It’s getting closer Chris. I have now finally reset the bush distance in the rocker cover and put it all together. with the introduction of the new felt insets both rocker arms are a little stiff, I am hoping they will bed in once the engine is started? Quote Link to comment Share on other sites More sharing options...
Ron Posted May 11, 2021 Share Posted May 11, 2021 Good Job Steve! Are the felts readily available, or did you just find something suitable? I can't remember what comes in a gasket set. As long as the stiffness can be overcome by the valve springs it will soon bed in. You might be able to bolt it to the head first and try the operation with a lever? Ron Quote Link to comment Share on other sites More sharing options...
flyingfleasteve Posted May 11, 2021 Author Share Posted May 11, 2021 Thanks Ron. I am pleased with the end result. I purchased the felts from AMC classics. They are notoriously difficult to located into place so I removed one of each of the bushes, located the felt and pushed the bush back in..... I can move the arms by hand easy enough, just a bit stiff. Probably because I soaked the felts first..... Quote Link to comment Share on other sites More sharing options...
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