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Discussion Starter · #1 ·
You guys that have installed the 43-47 helix - are you getting a straight shift or does it over-rev at the start?

I currently have the stock 412 ramps, new 160-290 primary spring, clicker 3. Secondary has new rollers, 43-47 helix and a new green (stock) secondary spring.

When I hammer it I get 8400 rpms. It drops quick to 8300 and by the time I hit about 40 to 50 mph it's down to right at 8000 and stays there. Is this typical?

The reason I ask is because I started to freshen up the clutches after I was getting only 7300 rpms with the stock clutching. I had the new springs and helix ready to install and I didn't really want to take the secondary out a second time cause it's a PITA. So, is this the typical rpm profile with this setup or is there a still un-resolved issue, maybe fuel supply or raves...
 

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Yes, the 43-47 is not the best clutch set up. Yes it over revs and then under rev on top. Ive been working on better 600etec clutching. Stage 1 kit is available, stage 2 will be becoming available soon.
 

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on my renegade with that same helix i dont have that issue... i am geared to 21-45 and have a 190-290 primary
 

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Discussion Starter · #4 ·
Thanks for the reply guys. I'm gonna try the raves and the fuel filters to see if that is contributing to lower sustained rpms. I know 8000 is right but if I add weight to get the initial shifting back to 8000-8100 then the mid to high shift ratio rpms are gonna be low, like 7600 to 7700, which kinda tells me I'm low on power??
 
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