- Location
- Seattle, WA
First off, I've been using this forum for a year and its been an immense help solving problems and just learning about skis in general so thank you guys. I bought a non running SN for $1000 last year without ever stepping on a standup. I was hooked from the moment my buddy mentioned he had one.
Here's what I'm running:
701 single carb in a 93 SN
Tau Ceti F/A
Worx 201 intake
Jet Dynamics ride plate
Hooker 9/15
Solas 144 Mag
compression 135psi both cylinders (will be doing top end this winter)
Pilot 100
Main 135
Pop off 43psi
Ever since I've run this ski it has always had a low end bog from idle all the way to about 1/2 throttle. After 1/2 throttle it rips hard. Low end sucks harder than a stock 650 SN, but I've just been digging the whole stand up thing and just ridding it, now its really starting to bug me. I was meticulous about rebuilding the carb a year ago so I don't think anything was left out (no missing parts, new filter, check valves correct way). I feel my pop off is a bit high for after market FA and my pilot is a bit low (I think stock is 115). So if anything I should be a bit lean but when I tried a lower pop off of 28 and a bigger Pilot of 115 I bogged even harder to the point of stalling out.
I'm beginning to lean towards the pump to pump shoe seal (packing) or the midshaft seal. Hard to imagine I'd loose idle to 1/2 throttle just from cavitation but maybe. For some reason when I installed the mag pump I could not for the life of me engage the splines with the new pump packing, so I put the old one back in. Bog was there before and after pump and prop install. I did not use any grease or Ultra Black sealant on the packing.
Any ideas on? Pump packing, midshaft, carb, new gas lines, tank check valve? Thanks, appreciate the input...This site kicks arse.
Here's what I'm running:
701 single carb in a 93 SN
Tau Ceti F/A
Worx 201 intake
Jet Dynamics ride plate
Hooker 9/15
Solas 144 Mag
compression 135psi both cylinders (will be doing top end this winter)
Pilot 100
Main 135
Pop off 43psi
Ever since I've run this ski it has always had a low end bog from idle all the way to about 1/2 throttle. After 1/2 throttle it rips hard. Low end sucks harder than a stock 650 SN, but I've just been digging the whole stand up thing and just ridding it, now its really starting to bug me. I was meticulous about rebuilding the carb a year ago so I don't think anything was left out (no missing parts, new filter, check valves correct way). I feel my pop off is a bit high for after market FA and my pilot is a bit low (I think stock is 115). So if anything I should be a bit lean but when I tried a lower pop off of 28 and a bigger Pilot of 115 I bogged even harder to the point of stalling out.
I'm beginning to lean towards the pump to pump shoe seal (packing) or the midshaft seal. Hard to imagine I'd loose idle to 1/2 throttle just from cavitation but maybe. For some reason when I installed the mag pump I could not for the life of me engage the splines with the new pump packing, so I put the old one back in. Bog was there before and after pump and prop install. I did not use any grease or Ultra Black sealant on the packing.
Any ideas on? Pump packing, midshaft, carb, new gas lines, tank check valve? Thanks, appreciate the input...This site kicks arse.