I have a 2015 sportsman xp 1000 atv, the only mods I have are a k&N filter, 2in extreme bracket lift, 28in swamplites on 14in diesel m12s, I have installed an EPI sport utility clutch for 27-28in over sized tires product number WE437282, I chose the black and gold instead of the black and silver spring as this was told to me that my low end would be right with this spring. Here is my dilemma, when I got my bike back from the shop I noticed that the stall before the engagement was really high and when it engaged it was a HORRIBLE clank !!!, as well as a lunge forward when I let off the throttle, (I wanted a light backshift almost like a mild slightly braking coast until stop. I will say that when you got the bike going that the low and mid range were very impressive but this is not what I wanted in my riding experience. When I talked to EPI I told them that I wanted a low rpm, very smooth engagement, crisp throttle response with good low and mid levels to pick up what I was being robbed by my oversized tires,(like switching truck gear ratios from a stock 373 to a 456), and that I would be doing mostly trail riding some light mud riding (possibly med to med/heavy on occasions) and some sand riding, not dunes but more like beach riding, not the over revving slam into engagement that im experiencing, the very little research that I had to study all said that EPI was a good clutch, (and maybe I just have the wrong springs) but this is the polar opposite of what I wanted. I am looking to professionals for the help needed to get my bike back to my standards. this has been an extremely costly experience so please take your time ask all the questions you need, I wanna add the suggestions that I have come across from epi and me asking soooo many questions in order to get the riding experience I am looking for, the black and gold primary spring has an 80lb/200lb 2.5” -1.25” load, which is installed now giving me the horrible experience, the black and silver spring has a 60lb/200lb 2.5”-1.25”load (this was the second primary spring that came with the EPI kit), my stock spring is orange and has a 22lb-200lb 2.5”-1.25”load. I was informed today that the weights are 62grams (non tunable), my stock weights are 70 grams (non tunable). the secondary EPI kit spring is orange with a 125lb/230lb 2.5”-1.25”. I was also thinking that maybe a custom cut helix would give me the low to mid range I am looking for without having to change out my springs in order to get the somewhat results. also maybe some custom weights for this setup would do me some good?
My questions right now far outweigh the answers:
1. what if I put my factory primary spring on with the EPI weights and keep the secondary EPI spring on, what will happen? will it burn up my belt?
2. would a custom helix give me the outcome I need?
3. is it possible to get the low and mid range torque back without having to up my engagement rpms?
4. would a shim kit work with the black and silver primary spring and maybe heavier weights get the outcome I need?
5. even if I changed my spring would my bike run better with aftermarket weights and what are some that are highly recommended?
I have contacted Dalton,(absolutely no help whatso ever, just wanted to tell me that my kit and his kit wasn’t compatible), ive contacted EPI (they told me to do the first of my questions), QSC has just returned my email but the answers were limited. Starting line performance doesn’t make kits for atvs but was the most help at explaining what each component does.
sorry this is so long but I am in serious need to get some answers
