Yamaha RD 350 YPVS F1 top end rebuild all to check the health of the motor. Crazy as crazy comes

[@zx81uk]

Love following your progress. On the pipes, the standard pipes simply look best which suits a super standard bike and probably attracts the most attention if that's what you want. I think as soon as you fit alternate pipes, the bike suddenly looks like it's been 'tinkered with', just like al the others. Hence, I fully understand the dilemma. To which there is only one answer - you have to own both sets! Unless you just want a show queen to show off, and not ride it much. For me the whole point of owning a 2 stroke is to ride it (thrash it). And partly because it's better to ride a small bike fast than a fast bike slow, the RD350/400/LC/YPVS of any kind, is perfect for the job, even 50's, 80's, 125's and 250's. Hence, I will be owning both sets of pipes on my N2 in due course and will decide from trial and error or 'mood' which set I prefer to use. I suspect will get the chrome Allspeeds first and then 'find' a set of standard pipes just because you will be dying to know how they compare. More pros and cons: Standard pipes sound great and you can blast about without upsetting anyone too much. Alternate pipes sound even better, particularly at tick over, especially if you can get that crisp 'tinging' sound, however, they may be too loud to blast everywhere (not got mine yet so I can't be sure how I feel about that). My standard pipes on the N2 (bean cans) look brilliant, but I can't take the baffles out to clean them - so I can only use caustic soda and this will kill the existing 'fibre matting' baffles one day (will then have to cut it open to fix!) I'm hoping my alternate pipes will allow for easy cleaning - we shall see? And the big worry with alternate pipes: will they need carb. re-jetting and needle clip adjustments? This may need considerable experiment to find out - which 'one day' I will be happy to do - at present I just want to 'ride' (just the same as when I got my first moped at 16.) Note in-passing - I didn't bother rebuilding my engine when I got it 3 years ago (it revs easily through to 12K rpm), (despite being of unknown history) - however, bit by bit I have had to replace all the leaking gaskets and oil seals but so far I have not needed to split the cases. The worst oil leak being the oil pump oil seals, when these failed this caused 2 stroke oil to 'pump' into the gearbox oil which then overfilled and came out of the gearbox breather onto the rear wheel!!! (Good idea to do these first.)

[@joenielsen68]

Thank you I appreciate that, another coming soon , results of new rings and hoaning

[@joenielsen68]

Just read your comment …. You have hit the nail on the head … my thoughts exactly, so I’ll be buying a brand new set of all speeds get them coated black unlike my last set were chrome but I’ll have both standard plus the all speeds , the bike will be fir leisure rides only , my plan is to later get a hybrid but that’s another day so once again thanks for your thoughts

[@JohnSmith-xx5ou]

Sure the crank seals need replaceing

[@joenielsen68]

Engines just about finished, complete rebuild new bearing seals crank as well was gone and pressure test I found a fracture in a casing so that’s repaired all powder coated ….. brand new and for the faint hearted these bike are not cheap but bloody great fun

[@JohnSmith-xx5ou]

That a barrel not a head, head goes ontop of barrel

[@joenielsen68]

You get top prize…. No editing just wrong word…. Blue Peter badge for you