Yamaha 660 models

[keithcross]

I have posted some piccies of some of the bikes, besides MZ that use the new 4 valve Yamaha 660 engine and a picture of the Yahama XTZ660 which is the bike MZ uses the engine unit from, see
http://www.mzriders.com/album_personal.php?user_id=66
This is for those, mainly states side, that may not have seen these bikes before. I would have posted pictures of the Yamaha 50cc and 125cc motots, as well as the SRZ660, but run out of room on my gallery

Keith

[CM]

MZ uses the 5 valve 660ccm engine with carbs and not the bad new one with 4 valves and injection......

[keithcross]

MZ uses the 5 valve 660ccm engine with carbs and not the bad new one with 4 valves and injection......

One of my work friends owns one of the new 660 engined Yamahas and it seems OK. About the same engine power etc. It also looks like it will fit in teh MZ frame.
Dont see it as a bad engine myself, but saying that there's nothing wrong with the 5 valve engine either.
The new Yam is an infeior bike in other ways, non adjustable front suspension, no adjustable damping on the rear shock and the front mudgaurd styling is even worse then the one fitted t the MZ

Keith

[keithcross]

Just posted a picture of the Yamaha SZR660 and the XTX125. Both unavalable in the USA I think.

Keith

[CM]

The "Motorrad", a big bike magazine had made a 50.000km test with the XT 660. The qualitiy of the frame was bad, rust at some places and the engine has a constant jerking when you drive. The suspension sucks too, just to soft.

Also the engine has the same problem with the synchronisation of balance shaft and crank shaft. The screw nut on the crank shaft is loosing and then a small adaptor don´t fit right and the shafts crashes together. If you don´t fix it, your engine breaks soon.

Yamaha had this problem since they produced the XT 550 (1982 O_o).


Im my opinion, the "new" engine isn´t working better than the Baghira´s.

[keithcross]

Also the engine has the same problem with the synchronisation of balance shaft and crank shaft. The screw nut on the crank shaft is loosing and then a small adaptor don´t fit right and the shafts crashes together. If you don´t fix it, your engine breaks soon.

Yamaha had this problem since they produced the XT 550 (1982 O_o).


Im my opinion, the "new" engine isn´t working better than the Baghira´s.

I have done 60000kms on my Baggi, never had or heard of this problem.

Keith

[CM]

My fathers Skorpion had it with nearly 38.000km. We fixed it and now the skorpion is running like before