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Capacity wise, the Savage is a much better horse to the ton ...

Well, regarding what I found in the sump, she's not after the ton anytime soon : The rod doesn't spin too freely on the crank either and has some axial play (but not radial).

Hi PJ, Thanks for following my oily dreams. I am much interested in your fast XL 125 setup description, is there a thread somewhere ? I bet there is power hidden in the GN since it has an evil twin called a Goose 250 and they apparently sport out 26 japanese HP. I was contemplating the...

Whatever its real horsepower, in standard trim (euro spec carb setup), my bike was capable of 83 mph on E10 fuel with 45K on the clock. That's my baseline for further developpement. I fancy having the new piston coated on both head and skirt as well as the head. The power potential is almost...

Re: Ton with style - 250 => DIY flowbench page 7 Chinese part got there in a week. I asked a fellow engineer some feedback about the piston and cylinder with the old japanese part in hand and the opinion was the parts look OK. Cylinder is sand casted so should be better as far as heat...

Re: Ton with style - 250 Thanks for the reply. Overbore of a cast iron cylinder + piston and gasket set, say 300€ (sounds fair) New nickazyl cylinder + piston + gasket set + delivery = 60€ ... The euro Tux as of 1997 is same power as GN and does not have FI. I don't know how much is it @...

Re: Ton with style - 250 => DIY flowbench page 7 I have been out to buy a replacement 250 today, the newer version of the GN which is called a TUx or Volty someplace. The bike was advertised for 20K miles and at 300€ but with a bent fork and basically pretty tired trim. Turns out she has 50K...

Re: Ton with style - 250 => DIY flowbench page 7 I have been using 10W40 oil intended for turbo diesel cars with direct injection as I was trying to get rid of a slipping clutch (and it did work) The bike has 40K, it is a 250 single so it is not uncommon to have to rebore them at that sort of...

Re: Ton with style - 250 => DIY flowbench page 7 Hi folks, So the head job is somehow on hold since I decoked the reference exhaust port only to find out it does flow the same if not more than my modded port. I did find motivation to remove the cylinder and the news were not too good : I...

Re: Ton with style - 250 => DIY flowbench page 7 Cool !

Re: Ton with style - 250 => DIY flowbench page 7 Anyway I checked the modded exhaust port vs standard and coked exhaust port (there are 2 ports) and at a similar lift with a given quantity of water, the modded port takes 14% less time to evacuate the water. I had kept on modding the port...

Nice fairing ! I saw you stated your GN as being a 300 now. Does it mean you had a DR 350 piston fitted or is there a 79 mm piston available ? Apparently the DR piston axis is 2 mm bigger so it means either the rod little end has to be enlarged or piston has to be sleeved. And what about...

Re: Ton with style - 250 => DIY flowbench page 7 Nobody interested in my home made flowbench ? :-\

Re: Ton with style - 250 No, it isn't, there is far worse in the thread somewhere, a tappered hand made out of cardboard. The lack of high speed stability got away with a new rear tire.

Re: Ton with style - 250 Back from the dead in progress ! Long story short : funky rattling noise + power loss led me to stopping the bike before terminal failure. I first thought it was the cam chain tensionner that was shot (I heard it is not uncommon to have to replace the chain @ 40K). I...

Re: Ton with style - 250 Well, it is not uncommon for my rear wheel to lock going from 3 to 2 or just letting off the throttle in 2, usually in a roundabout, so if I can avoid feeling it more than now, I will be happy. Clip on are mopped item too since a Yamaha TZR 50 has a 32mm fork these...

Re: Ton with style - 250 It should not push down on rear since it is smaller than me and tappers down with a 15° angle. Trouble is I need to sit upright to make it work. Didn't manage to find cheap clip ons so far but as soon as I get a set, I will rebuild it much smaller to match my butt...

Re: Ton with style - 250 Thank you. And it was what I was trying to investigate (some might think "in a grotesque way")

Re: Ton with style - 250 Sorry about the cardboard incident, I decided to check the validity of the concept saying the back of the bike is as important as the front in a very crude way. It might happen again but I swear I won't tell. Thing is, as ugly and unprofessionnial this thing is, it...

Re: Ton with style - 250 Actually, I forgot to mention the stability issue is not related to the presence or absence of the "aerodynamical device" as it happens before its installation. I didn't quite manage to understand the centre of pressure concept but am working on it. To be honest, GN...