Need help clutching an Aerocharged 1998 Summit 670

[1998Aerocharged670]

Hi everyone what I'm wondering is if anyone knows what a good starting point for primary clutch spring and 2ndary clutch spring/helix on my 1998 Skidoo Summit 670 with single fatty pipe and aerocharger? I ride at 1300 feet elevation all the time with a 136×2 track with no picks. Basically if anyone could even tell me what type of changes have to take place with clutching , gearing, track etc. with any sled from a factory setup to a turbo setup would help me greatly. Thanks

 

[Backcountrypro]

You will need to run the TRA pins as heavy as possible with a very light finish force spring to start with. I had a 670, can’t image a turbo on it at low elevation.....hats off to you buddy!