Turbo clutching question

[tratch2]

Finally got all my boost leaks fixed and now have a major over reving issue.
My sled is a 09 Iqr with a 2012 cfi 800 engine with a 2013 silber bully dog turbo. The sled is a 121 with a 1.75 track. The sled pulls like a beast but itll over rev easily and hit the rev limitor. For clutching Im running 88 gram team rooster weighs, 190-335 spring, 44/42 helix with a 180/260 sec spring. Running 7 lbs boost, 50/50 av. Premium. Im hitting the rev limitor at 3/4 throttle. I need to load the engine right up off the line because if it spins out hard itll put the engine in limp mode because it hits the rev limitor. I currently have ordered a 180-300 pri. Spring and just debating what helix i should try next??? Any ideas?

 

[gbarry]

you can easily fix the over revving issue by just weighting down the primary more. you're just making more power with the boost leak gone. Is the clutching that you have recommended by the turbo kit manufacturer? Or just something you put together?

 

[roni87]

Throw some more gearing at it... and I'll likely going to a straight 48 helix in mine

 

[tratch2]

The gearing that was recommended was waaay to light. Couldnt even drive the sled. As far as gearing any more gear will be too much! Im pulling 106 mph on gps... the weights i have i cant go any heavier, thats why i was hoping that i could get away with a 180-300 spring. I just got back from a 40 miles ride and the sled is apsolutely insane!!! Dosnt matter what your speed is it just stands up and hold on!!! Gunna try a straight 48 tommmrow and see how it goes....

 

[roni87]

Stock secondary spring is 180-300. I replaced with slp blackpurple 160-240. That brought rpms down a bunch for me on a 44/48 helix.
Will post up how 5 psi works with same setup