I bought a 2016 Z 800 with 700 miles on it has full back window and 1/2 windshield I don't know what the previous owner done to the clutch but mine tops out at 71 mph

I wanted to toss this question into the mix.....Is there drilling required in clocking the clutch to B2?

[2015 Z Force 800 53/Trail EPS]

I wanted to toss this question into the mix.....Is there drilling required in clocking the clutch to B2?

Nope...Nada. Holes are already there just waiting...  Check out the videos in the How Tos.

My dealer mentioned drilling the weights to make them lighter. Also a big warning this would void a portion of my warranty.

[2015 Z Force 800 53/Trail EPS]

My dealer mentioned drilling the weights to make them lighter. Also a big warning this would void a portion of my warranty.

Yeah don't drill any weights..they are the rollers or sliders and they are in the Primary clutch. You will not be able to balance them well enough afterwards. Replace them with OE's or Dr Pulley's products if necessary. "Clocking" refers to secondary/driven clutch spring preloading only. 

Clocking definition is what I thought too. Is the difference as awesome as described?

[2015 Z Force 800 53/Trail EPS]

Clocking definition is what I thought too. Is the difference as awesome as described?

B1, the factory setting is so far under the power band that..Yes, the difference is nothing short of amazing. Even C1 is a vast improvement over B1.

I don't think drilling the weights would cause any harm other than just lightening them, they don't spin themselves so they really don't need to be balanced they are just a weight that slides with centrifugal force. But you would need to drill them all the same to have them all the same weight. Where you drill them really shouldn't make a difference. On snowmobiles it does but that's a different set up.

Hey guys im at the dunes in st. anthony with my 800 z with the 23 gram sliders and on longer pulls this thing doesn't back shift, pulls the rpms way down lugging the motor. Im in the b2 with secondary. Any thoughts? Is it his this that under powered, my buddies stock rzrs 900s run circles around this thing, literally..

[2015 Z Force 800 53/Trail EPS]

Hey guys im at the dunes in st. anthony with my 800 z with the 23 gram sliders and on longer pulls this thing doesn't back shift, pulls the rpms way down lugging the motor. Im in the b2 with secondary. Any thoughts? Is it his this that under powered, my buddies stock rzrs 900s run circles around this thing, literally..

Chalk-up another one. We are having a discussion about this very thing in another thread. Seems this may be a characteristic of this clutch design. When you go over C1 it seems to have an issue with backshifting in deep sand and steep sandy hills...but you make a good point about power. These do only have 63 HP and that may be a factor in backshifting. Hadn't considered that...and sand is one of the biggest robbers of power there is. I also know after I clean-up and re-polish my sliders and ramps on my clutches it works way better..but only for a while. Much longer now that I filter the CVT intake air though.

Thanks NMK, any chance the weight of the sliders is just too light??? Doesn't make sense I know but im thinking of putting stock weights back in an try and run low range. I couldnt with the 23s because trying to get a run I would hit rev limit too soon and not enough speed. Thanks again for all your help and input.

[2015 Z Force 800 53/Trail EPS]

Thanks NMK, any chance the weight of the sliders is just too light??? Doesn't make sense I know but im thinking of putting stock weights back in an try and run low range. I couldnt with the 23s because trying to get a run I would hit rev limit too soon and not enough speed. Thanks again for all your help and input.

Give it a try but one would think a heavier weight would hold it open easier and make it harder to back-shift. But I though going from B2 to A2 would force it to backshift easier...and it does...on the flat..but only slightly better on sand hills. The more I read the more I think the Helix's ramp angle and slides are the issue in this type power and torque-robbing of terrain. I am starting to think with this general-purpose helix it take more torque to backshift in certain load situations...torque that these just don't have in the sand...stock that is. If I was going to do a lot of sand riding I think I would look for a different clutch setup...one with roller cams..angled for that type of usage and.. increase the engine power any way I could. I watched Jogo30 take his new YXZ up sand hills like they were flat hard pack roads..zero effort..any speed he wanted to..hills that I only can climb less then half way up and looking like a golf cart compared to his. But...I do well everywhere else! so that counts for something.

I'm starting to think the sliders need to be Delrin. I have spares, so maybe I'll look again at what it will take to make them. I was also thinking about the helix but don't know what to try as far as the geometry. I do have an extra one to try a steeper angle. If someone wants to try it and provide some figures, I'll send one machined up.

Something's off somewhere. Just to toss in the mix, the way it is acting with the drastic difference in weights is also a sign of either a binding secondary or...could it be possible... that you have clocked it to B3 or even B4 by mistake?

Anyway..I might be willing to buy your 24 gram sliders from you if you want to sell them. I like A2 up here but I think I want to increase the primary force just a little..but not all the back to 25 gram...and not back to B2 on the secondary.