Back in the 90s i always wanted this model the red white n blue pops nearest i got to one was a go on a rd200dx 81 model. 😅😅😅 btw am i correct in thinking they only ran from 84 to 85 so b to c registered.?
I think you’re correct , they didn’t make them for very long … it’s so funny because I also had the rd 200 air cooled I even had the 125 but never had them on the road
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
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.)
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
As we all know, this bikes in really good condition for its age but we all know the safest route is all new seals and mostly all new bearings… shame I believe some fool has thrashed it when cold and not in a position to be thrashed as the heat shows premature exploding below the piston due to work piston rings and the 3 miles under 3 years would suggest that … that’s my assumption
40 year plus RD owner here. Your bike looks like it has been running lean. Check the jetting and cleanliness of the carbs. Cylinder bores and pistons show no signs of seizure or piston rattling. Your compression is way too low. 125 psi or higher is your goal. Measure your pistons and measure your cylinders with a bore gauge. Fore and aft, as well as side to side 10mm up from the bottom, mid stroke, and 10mm down from the top. This will tell you how round your bores are. Depending on your measurements, you may get away cheap with a hone, or you may have to bore .25 over. If your measurements are good enough for just a hone, I'd spring for piston kits and small end bearings. I would not reuse those toasted pistons. Not worth the risk. Also, plan on doing a leak down test on your engine. It will give you a very clear idea of the health of your crank seals, head and base gaskets, and carb boots. You can put together a hardware store testing set up for about 12 to 15 pounds sterling. No need to spend crazy money. 6 to 8 psi for 15 minutes is your goal. Finally, replace the o rings and castle seals in the PV while you have the top end out. Last bit , Yamaha head gasket only! By the way, that is the cleanest 39 year old bike I have ever seen! You have a good base to build on, but 39 year old rubber parts need to be replaced. Good thing is the parts are available. Take your time, plan it out, and do it by the numbers. It'll come out great. You can do it.😊
That to everyone out there is the kind of advice everyone should read, if you don’t take it on board your silly but sound perfect advice , most of what has been done already , head honed with 15 seconds and perfectly round no uneven wear on the cylinder with measured rings old and new , unfortunately for the test I’m running before complete rebuild I am using old pistons but only for a start up and tests then strip rebuild on bearings seals etc, also testing 2 stroke consumption,cylinder has new seals and rings for this test …. But thank you so much for your time and reply it is the likes of you that help everyone out there Videos to follow will show my results
Ahhh and one more thing , after reading your comment I nearly forgot the leak test pressure….. low psi not sure why I forgot that …. Complete rebuilt is the way as even if it holds pressure the runners and seals are old as this motor has never been split
Thanks for the reply, totally standard motor, I intend to measure the 2stroke flow but I’m also going to check this out after honing , got all bearings all gaskets ready for rebuild just want to check compression again , I’m so curious …..
I would double check your compression tester, measure ring gap, whilst apart make sure you change the powervalve seals, and do a leak down test, nice bike btw, good luck👍
Oh yes … compression is rubbish, actually ordered a set of rings for my own curiosity to see what she has lost over the years …. And you go for ya feeler gauges and hay presto … not there …. Anyways fun and games in old bikes … thanks for the reply
@@joenielsen68 Hey Joe, Sounds like you have got it under control.😉 You are going to have a very nice YPVS when you are done. Good Luck with your project.
