Monday, January 9, 2017

Evora Clutch Delay Valve

Lotus decided to protect the transmission in the Evora S at the expense of the clutch. Just like with the S240 and S260 models (which we blogged about HERE), they fit a clutch delay valve in the hydraulic system. This valve delays the flow of fluid out of the clutch slave cylinder which more gently engages the clutch. This protects the transmission from shock loads, it also prematurely wears your clutch. 

We just pulled a clutch out of a 50k mile Evora S that was completely used up. If you look closely, you can see that the heads of the rivets are ground away; there was nothing left of this thing. It also damaged the flywheel and scored it badly enough that it also needs to be replaced. 

Delay valve shown
 Aggressive driving certainly plays a roll in the accelerated wear of a clutch, but slipping the clutch at every engagement really hurts life when combined with aggressive driving.

Our solution, the Evora CLUTCHline, is a piece of stainless steel braided line with the correct fittings that replaces the factory delay valve

The CLUTCHline will allow the clutch to engage as quickly as possible, preventing excessive slipping. It will also allow you to modulate the clutch in low speed situations rather than fight the delay valve. Of course if you want to do high RPM clutch dumps, you are going to put more stress on your transmission, but if you drive with some skill and care, the reliability of your transmission should not be compromised but your clutch life should be greatly extended. This is a good thing considering that a clutch replacement requires powertrain removal and takes roughly 40 hours of labor...


The lines are available on our site HERE. It takes about 2 hrs to install it.

1 comment:

Sean said...

Is that just the "S" models or all Evora models?