Adam z50+R said:The Crankcase comparisons on the tak site look interesting
with my old 124+R motor and Gb6 case it managed to fracture above the crank bearing journal at the see-through area ,where as the Tak Hd /Nice cases are solid
The new flywheel cover is Really Nice , if not soon available polished,, i'll be buying one to polish myself
I wouldn't be bothered, you have more torque and reliability on your side
HSM also sell a 64.5 mm crank ,TJR 62mm reworked ,just not listed on their site
SCUT = Skirt CUTDan-o 50z said:For all the newbs out here could you please explain in a little more detail the various stroke options, and at least for me, what the heck SCUT means?
firepower354 said:A set of Daytona cases is about $120, and the Nice innards should swap in. China mid-block stud pattern would allow better gasket sealing, and for a lot cheaper than welding and re-drilling a set of Nice cases, at least in the States. Too sacrilegious?
That manifold is part of the yoshimura carb kit.firepower354 said:Since they make the +R in mid-block pattern, it should be a sweet setup. Looks like Daytona crank. I like the manifold, for the nice bend, and funny letters
BigBear said:Sorry for referring to this old thread, but by accident i found the picture of my "Bastard-engine" here in this forum (i was looking for something else in the www).
If you want, here are some Details from the engine (and maybe from the bike as well): It is a Honda Nice Thailand crankcase, bored up to fit the 58mm piston. I used the Daytona 58.7 crankshaft in combination with the Daytona clutch. The gearbox is a 4-gear-Takegawa, because i had i laying around and it has a far better grading than the Honda gearbox. Oilpump is also Daytona, the shifter shaft and kickstart shaft is Honda Nice Thailand. The head is my old Takegawa Superhead +R with a S30 camshaft. Nowadays i would prefer the Yoshimura head... On the picture you still see the Yoshimura 26 MJN carb, (and i am still convinced that it is one of the best carbs available) but now i use the PE28 from Keihin, because you get a little bit more power at higher revs (the 26 carb is just too small). I combined it with the Yoshimura Tri-Oval Titan/Carbon Exhaust, wich is incredible (powerfull but loud, so i had to put noise killers in it) We measured the power of the engine on the dyno and it has 21,7hp. Runs good, but has more vibrations than the Honda Nice stock crank and much more than the TJR cranks. So: if you ask me, if i can recommend this combination, i can say yes, because it is affordable and you use the better crankcase compared to Daytona 150cc crankcase. All other parts (besides the Takegawa Gearbox) are "cheap" compared to other brands, and from my point of view you can also use the last edition of the Daytona gearbox: shift very smooth and feels good.
The bike itself is Z50R US-Version from 1979, made street legal here in germany. Modifications: Daytona 30mm frontfork with Nissin brakes, Kitaco wheels 3.5 x 8, Over swingarm (+16cm or 6.5in), longer shocks and so on.