Doc Harley
TY 4 Stroke God
- Joined
- Oct 17, 2016
- Messages
- 3,474
- Age
- 55
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- Here & there
- Country
- USA
- Snowmobile
- '17 Sidewinder LTX SE
TD Max17pm
Stock primary spring
Qay-70's @ 71.3
9000rpm
Dalton BLK ORG V2 @ 6/2
XS825
Boost 16.8
Detonation light came on immediately so I added boostane 1oz to 5gal.
Light off.
Pulls strong then seems to hit a brick wall @ 117mph.
Conditions are not perfect, rough. Temps warm at 32°F
Stock Sled pulls speedo 115mph all day everyday.
Is there something I can look closer at while I'm here?
Stock primary spring
Qay-70's @ 71.3
9000rpm
Dalton BLK ORG V2 @ 6/2
XS825
Boost 16.8
Detonation light came on immediately so I added boostane 1oz to 5gal.
Light off.
Pulls strong then seems to hit a brick wall @ 117mph.
Conditions are not perfect, rough. Temps warm at 32°F
Stock Sled pulls speedo 115mph all day everyday.
Is there something I can look closer at while I'm here?
Pstn head
TY 4 Stroke Master
condition of track, tension of track, or size of lugs possible ?
sideshowBob
Lifetime Member
Boost, RPM, looks good...should be performing well.
Conditions have a huge effect on top speed.
Helix?
Gearing?
Conditions have a huge effect on top speed.
Helix?
Gearing?
earthling
Lifetime Member
If you haven't changed gearing you are probably just getting to top speed faster.
rev them up
Pro
- Joined
- Apr 3, 2006
- Messages
- 161
- Age
- 52
- Location
- Prince Edward Island, Canada
- Country
- Canada
- Snowmobile
- 2011 Nytro XTX, Hurricane Exhaust, K&N, Pcv, Autotune, Pod300, Star Suspension,
2018 Sidewinder, TD Max Spool 17, CAI, TD 3 Inch Stock Muffler Mod, 3Bar, BOV
- LOCATION
- Prince Edward Island, Canada
I'm thinking get rid of the stock primary spring
I'm running ms17
dalton black/blue primary,
dalton quay70(76gram),
v2 b/o 6/2,
tock 35 helix
high torque rollers
xs825 belt,
td stock mod 3inch
CAI
.running 18/18.2 lbs boost, 9000rpm, stock gearing, storm1.5 track and studded
I'm running ms17
dalton black/blue primary,
dalton quay70(76gram),
v2 b/o 6/2,
tock 35 helix
high torque rollers
xs825 belt,
td stock mod 3inch
CAI
.running 18/18.2 lbs boost, 9000rpm, stock gearing, storm1.5 track and studded
NYTurbo
TY 4 Stroke God
Boost leak test first
Doc Harley
TY 4 Stroke God
- Joined
- Oct 17, 2016
- Messages
- 3,474
- Age
- 55
- Location
- Here & there
- Country
- USA
- Snowmobile
- '17 Sidewinder LTX SE
Track is good, 1/4" sag, 1.25" lugcondition of track, tension of track, or size of lugs possible ?
Not perfect but very doable. I've ran on this type of surface many timesBoost, RPM, looks good...should be performing well.
Conditions have a huge effect on top speed.
Helix?
Gearing?
35° helix
21/41
Speedo numbers are going fast. Then just stops. 117mph is too low to top out 21/41???If you haven't changed gearing you are probably just getting to top speed faster.
My clutch weight to achieve rpm seems low. I was expecting to be @ 74g+I'm thinking get rid of the stock primary spring
I'm running ms17
dalton black/blue primary,
dalton quay70(76gram),
v2 b/o 6/2,
tock 35 helix
high torque rollers
xs825 belt,
td stock mod 3inch
CAI
.running 18/18.2 lbs boost, 9000rpm, stock gearing, storm1.5 track and studded
I have a Dalton BLK BRZ I could try & a Yamaha Blu Wht Blu
Last edited:
number1kyster
TY 4 Stroke God
Are you still running the stock BOV?
Doc Harley
TY 4 Stroke God
- Joined
- Oct 17, 2016
- Messages
- 3,474
- Age
- 55
- Location
- Here & there
- Country
- USA
- Snowmobile
- '17 Sidewinder LTX SE
I'm afraid that was left behind.Boost leak test first
Also my IAC temps were pegged.
number1kyster
TY 4 Stroke God
21/41 should get you 124ish on the speedo.
Doc Harley
TY 4 Stroke God
- Joined
- Oct 17, 2016
- Messages
- 3,474
- Age
- 55
- Location
- Here & there
- Country
- USA
- Snowmobile
- '17 Sidewinder LTX SE
No turbosmart, I'm not in a position to test for boost leaks, unfortunately.Are you still running the stock BOV?
stgdz
TY 4 Stroke Junkie
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- Mar 27, 2021
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- Snowmobile
- 19 tcat, 15 4000 RR, 13 800 RR
Did you trim the intake barrel clamps?
number1kyster
TY 4 Stroke God
You are limited by the BOV. At 16.8, it should still run out of gear.
I’m surprised the stock BOV holds that high.
I’m surprised the stock BOV holds that high.
number1kyster
TY 4 Stroke God
You are topping out at 24/50 speeds.
Doc Harley
TY 4 Stroke God
- Joined
- Oct 17, 2016
- Messages
- 3,474
- Age
- 55
- Location
- Here & there
- Country
- USA
- Snowmobile
- '17 Sidewinder LTX SE
21/41 should get you 124ish on the speedo.
Unfortunately, that's not going to happen. Made the move to a flatter lake....113mph . Also it was an afterthought as it's getting dark.
Tomorrow's another day. Just kinda thought it might be clutching. Uneducated guess.
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