nojokef7
New member
I have a bender helix with 9770TP stamped on the back of it and was wondering if anybody knows the angle of it??


mopar1rules said:I'll buy that helix from you if you wanna sell it.
cajones2 said:I run a 51-45 on my big bore without any problems. But it depends on the rest of your setup too. The finish angle of 43 would get you a little better overrev at the end of your shift for top end. Is this on your 700 SXr? You could even check the User Tuning Chart tech pages as a reference. (http://www.totallyamaha.com/snowmobiles/AAATuning Chart/Tuning_Chart.htm) There are a number of 700's running this helix. I think I even seen bender pipes in the comments on at least one of them.
sleddineinar said:I know this post was about Bender helixes, but you said you are still having trouble with your oil pump... What happens when you open the bleeder screw on the oil pump? If the line from the oil tank isn't plugged, it should bleed out any air and then oil should come out. Then check the line to the fuel pump, make sure the check valve isn't on backwards, make sure you can blow through this line.