Had anyone installed the 1200 or 1275n springs with the new cable actuated clutch? I am curious about the increase in clutch pull compared to the stock 1100n springs. Thanks

 

I installed the 1275 springs with SE clutch. I honestly didn't notice much of a difference.
I was expecting a heavy pull, but no problem.

I then swapped out the disks for G3 carbonite and AIM pressure plate.
What a nightmare at speed, like closing vice grips, it was crazy (this will cause thread to go off topic)

Pulled that out right away and back to SE pressure plate and 1275 springs (kept the G3 disks installed).
Totally happy. I am fairly strong.

 

Thanks good to hear the 1275N springs made little difference in clutch pull. I will be swapping out the stockers as soon as I get them. I am surprised that the upgraded springs are not part of the SE131 Stage 4 kit. I have read the stock 1100N springs with 10 disk OEM clutch will handle 139 ft.lbs. of crank HP. The 131 conservatively puts out at least 150 crank torque. At least the 1200N springs should have been part of the kit. Anyway thank for the info.

 

Here's the spring comparison chart.

 

I'd use the 1275 because of the power available. These things with the engine idle management are almost impossible to stall even if the clutch pull is gumbied.

 

I'm gonna try the 1200N first and see how it feels and performs. The latest dyno I had showed 132lbft which is about 150 at the crank. The table supplied by OldMike shows the 10 disc with 1200N should handle it. I want the grip pressure on the clutch to be close to stock and I think the 1200N will handle the power and be almost like the stock pull. There is no clutch slippage right now so I think the 1200N's will be a good compromise. For 25 bucks I could always try the 1275N at a later date. Install appears to be a 20min job.

 

Yeah it is literally, remove the derby cover, back out springs evenly to release the pressure. Lock tight and reinstall, so easy. I don't remember the torque value but someone will.

 

I installed the high performance AIM springs, getting ready for a TTS 175 cam install. I have arthritis in my hands and was worried about a big increase in lever pull. I could hardly tell the difference. I just looked for tech specs to see how they compared to the 1200N and the 1275N and came up short. The best I found was the description "Significantly stiffer than the SE 1275N Spring."
You should be fine with either the 1200N or the 1275N when it comes to lever pull.
And, like FunHuman says, it was easy to install them through the derby cover. I don't have the torque value either. The only thing that went wrong was I over-torqued one of the derby cover screws and snapped the head off. They are apparently made out of cheese, so get out the inch-lb torque wrench and the shop manual.

 

Thanks for the feedback. Yeah my concern also is some arthritis in my left hand that has recently started. Getting older is awesome.... Glad to hear I should be fine. I'll report back after install.

 

I've been very curious about this. I ordered some springs too and the 1200NM springs say they should have a red stripe on them. What about the 1275NM springs?

Otherwise, there is no CLEAR way to identify 1100, 1200, and/or 1275NM springs.