det är olika toppar kolvar cylindrar vev tändning mm på en ho
det är 3.20mm förtändning på en ho
1.93mm på en vanlig 670
här kan titta på orginal del med nr kli på view parts å sen din skoter
http://epc.brp.com/login.aspx?ReturnUrl=/default.aspx?brands=skidoo&lang=E&brands=skidoo&lang=E
här kommer lite tips om vad du kan titta på om det är en ho eller inte
The pistons in a ho are flat top and the head is a bath tub ,A regulad 670 has a domed pistom and a hemi head.
This is a list of things that are not the same jugs ,head ,pistons,pipe crank ,ignition box crank case and carbs, The crank case and Jugs can be modified but non of the other parts will work on the
670HO.
The biggest thing is the ho is controlled by DPM . There are many changes not all account for more power but they are changed on the ho . The timing is different the cases have more tunnel porting , flat top pistons, the head is a Bath tub design instead of a Hemi ,44 mm carbs were used on the HO like the twin pipe mach I engine but the ho did not have a 501 Disc. The muffler is a light weight low restriction Can . The regular 670 had 117 hp the ho is over 125 in every Dyno test I have seen the 670 ho made more power than a 700 series III skidoo .
