ride907
Newbie
I bought my turbo sled with all the mods already done and I've been learning it ever since. I don't know about the primary clutch setup as I've not delved into it (since it seems to be doing fine), but the secondary gave me some trouble from the beginning. I'd adjust boost settings from 7-15psi and tweak AFR's up and down and could never get a consistent run, the sled felt boggy, etc etc. If I ran the machine on a nice flat straight and got the speed up to 40-50mph and pinned it, the machine was a whole new animal. After some research I decided to adjust the shockwave secondary and stop screwing with the boost/fuel settings. What a difference!!!
The sled went from basically bogging in almost all conditions below 30mph to absolutely ripping catwalks from a dead stop.
This was all fine and good until I raced my brother (08 Summit 800R) and wound up inadvertently jumping a driveway (I should be in the hospital) and broke the plastic all around the clutches. The area with the clutches filled with snow immediately (repeatedly) and gave me nothing but headaches.
I was running a Gates belt at the time and it immediately got wet and stretched/wore out/etc etc and I had to swap it for a stock belt.
===================Serious time==================
After I slipped on the factory spec belt, my brother mentioned that the belt was recessed into the secondary about 1/8" and that his spec said it should be protruding past his secondary about 1/4"(his "spec" for his skidoo"). I figured that since it was a stock belt that whatever fitment it had, was acceptable and I should just ride with it anyways. (I had another spare stock belt anyways in case). I reassembled the machine, dug out all the snow I could dig out of the compartment and proceeded to get out of the powder onto the nearest set of tracks/trail to minimize snow buildup into the clutch area.
The belt started to squeal, which I figured was just from wetness. I opened up the compartment again and removed all the snow (once I was on nice solid hardpack) and let it idle for a bit to see if the squealing would decrease. The belt kept at it, making a loud screeching noise at idle. On any amount of acceleration, it would immediately hush up, but any idle, it would screech.
Another piece of noteworthy mention... The sled pulled harder than ever before, doing big catwalks with ease on the CE 174 on the stock belt (the squealer) as opposed to the gates belt which required me to be on the stutter box to get the machine to stand up.
===============Synopsis=================
In your experience, what's the best belt for turbo use/abuse?
Which belt(s) lasts the longest?
What's the best solution for keeping the clutch area free/clean of snow?
At 15psi non-intercooled on C16 fuel (head shimmed) with a rear mount turbo (charge pipe gets a healthy blast of snow at all times) does it need an intercooler for this boost? Seems to run fairly predictably with seemingly consistent AFR's (11-12:1 at sea level based on tuning) at 15F.
What symptoms will I encounter if I tighten my shockwave too much?
The primary clutch rocks solid at 8900-9200rpms when it's rapped out, should I mess with it?
Any advise/input/comments besides what I've mentioned? I always love critiques/help/advise.
Thanks!! I finally love my boost (after adjusting the shockwave).
The sled went from basically bogging in almost all conditions below 30mph to absolutely ripping catwalks from a dead stop.
This was all fine and good until I raced my brother (08 Summit 800R) and wound up inadvertently jumping a driveway (I should be in the hospital) and broke the plastic all around the clutches. The area with the clutches filled with snow immediately (repeatedly) and gave me nothing but headaches.
I was running a Gates belt at the time and it immediately got wet and stretched/wore out/etc etc and I had to swap it for a stock belt.
===================Serious time==================
After I slipped on the factory spec belt, my brother mentioned that the belt was recessed into the secondary about 1/8" and that his spec said it should be protruding past his secondary about 1/4"(his "spec" for his skidoo"). I figured that since it was a stock belt that whatever fitment it had, was acceptable and I should just ride with it anyways. (I had another spare stock belt anyways in case). I reassembled the machine, dug out all the snow I could dig out of the compartment and proceeded to get out of the powder onto the nearest set of tracks/trail to minimize snow buildup into the clutch area.
The belt started to squeal, which I figured was just from wetness. I opened up the compartment again and removed all the snow (once I was on nice solid hardpack) and let it idle for a bit to see if the squealing would decrease. The belt kept at it, making a loud screeching noise at idle. On any amount of acceleration, it would immediately hush up, but any idle, it would screech.
Another piece of noteworthy mention... The sled pulled harder than ever before, doing big catwalks with ease on the CE 174 on the stock belt (the squealer) as opposed to the gates belt which required me to be on the stutter box to get the machine to stand up.
===============Synopsis=================
In your experience, what's the best belt for turbo use/abuse?
Which belt(s) lasts the longest?
What's the best solution for keeping the clutch area free/clean of snow?
At 15psi non-intercooled on C16 fuel (head shimmed) with a rear mount turbo (charge pipe gets a healthy blast of snow at all times) does it need an intercooler for this boost? Seems to run fairly predictably with seemingly consistent AFR's (11-12:1 at sea level based on tuning) at 15F.
What symptoms will I encounter if I tighten my shockwave too much?
The primary clutch rocks solid at 8900-9200rpms when it's rapped out, should I mess with it?
Any advise/input/comments besides what I've mentioned? I always love critiques/help/advise.
Thanks!! I finally love my boost (after adjusting the shockwave).
kinger
VIP Member
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The best belt is the stock 8DN
When you put a new belt in there are shims behind the secondary to remove to get the belt to sit down a little bit lower. The squealing is the belt is grabbing the secondary slightly at idle, the plus side is the response is instant since its already grabbing a bit as you noticed. As the belt wears it will go away and the response will get softer. I always pull the shims on a new belt to avoid the squeal, then add them back in after 500+ miles to keep the performance.
Sounds like a fun sled!
When you put a new belt in there are shims behind the secondary to remove to get the belt to sit down a little bit lower. The squealing is the belt is grabbing the secondary slightly at idle, the plus side is the response is instant since its already grabbing a bit as you noticed. As the belt wears it will go away and the response will get softer. I always pull the shims on a new belt to avoid the squeal, then add them back in after 500+ miles to keep the performance.
Sounds like a fun sled!
AKYZ450F
Newbie
I would get rid of the Shockwave and buy a staight cut 47 degree helix and a purple epi or a green cat spring for it.
tube
Veteran
KEEP SHOCKWAVE - run 66g polaris weights and pins grind the tips just a but so they clear with a yamaha orange primary spring and 3 washers cut 30 thou. off the primary sheaves run a multi angle shock wave helix with 60 thou. cut off the end 1 turn out and a black yellow spring and hang on best clutch kit ever this apex rocks runs 10800-11000 depending on conditions ----2006 Apex GT
