smackboy1

Has anybody else modded their clutch delay switch? I just read this on Cayman Club

http://www.caymanclub.net/cayman-mod...eated-joy.html

I just tried it out and WOW what a difference. The throttle pedal is now much more sensitive off the line and after shifts. Power after an upshift is much more immediately available. Heel-toe downshifts are much easier because I don't have to blip the throttle as deeply to get the revs up.

I don't know exactly what the clutch delay switch does, but it feels like it modifies the throttle map (makes it less sensitive) so you have to push the throttle pedal deeper to get increase the throttle while the delay is in effect. Since I got the 996 I've noticed a "turbo-lag-like" effect where upon a standing start, the engine will surge a little at around 3,000 rpm. I used to think that was the Variocam Plus kicking in. Now I am rethinking that theory. I think a more likely culprit is the clutch delay switch causing a throttle lag which coincidentally happens to end when I reach around 3,000 rpm.

Interesting.

ivangene

you try it?
sounds simple and I have no idea why this should work, but it is a removable mod... so, i will try too
E

smackboy1

It takes literally 5 minutes to do. The easiest way to do it is to give the switch a 1/4 twist and remove it from the bracket. Then either tape or rubber band the switch plunger down so the sensor thinks the clutch pedal is permanently in the up position. Then just move it up and out of the way. The hardest part is contorting your body in the footwell with a light.

This may replace the orange cap as the Best Bang for the Buck Mod.

IrocMan

I thought the same sensor was used to know if the clutch pedal is pushed down, to allow engine to start ?
Am I wrong ? (then good news)

ivangene

Not this one, this is a burnt orange color, twists out (I didnt need a light), quick tape up and fold it up in the wires..
Personally I tried it for about an hour and realized that after "learning" to shift this car over the last few months, I no longer wish it was "normal"... I switched back, simple enough to test if you like it....
Ed

s-spiff

Won't this disable your cruise control? The starter interlock switch is a different one that is triggered when the clutch pedal hits the floor, not when it is initially depressed.

redridge

no... this wont dis-able the CC cause it thinks the clutch pedal is always up.... it however, will not dis-able your CC if you have it enabled and step on the clutch.... the brakes will dis-able it though.

I actually dont like the extra response at the track.... Im much smoother with the throttle when it is dampened a bit. I find my gas pedal to touchy for my taste. But Ithink this mod may only be good from 1st to 2nd gear... so it will not impact so much at the track. I like the helper spring mod for clutch feel.... But Im sure I have to try this mod out one day since its so easy....

Thanks for the info...

ivangene

<perks> helper spring mod??? what's that you say....

Forum Search.........

redridge

yeah... hope you have time...

the "war and peace" version

https://rennlist.com/forums/showthre...=clutch+spring

smackboy1

2 different switches but mounted on the same bracket. If you look at this photo someone posted of their Cayman clutch you can see the grey micro switch in the middle, which activates the starter circuit when the clutch is fully depressed. This is the click that is heard when the clutch pedal is fully depressed. The orange plug is the clutch delay switch. It makes no sound and the plunger switch is pushed in when the clutch pedal is not depressed. This photo was taken looking straight up under the dash. The clutch pedal itself would be extending out at the bottom of the photo.

The new throttle feel definitely takes a little getting used to. Without the delay the throttle feel is more linear and the power comes on more quickly. The tradeoff is the sensitivity can make shifts jerky and make it harder to maneuver small distances at slow speed e.g. parallel parking into a tight spot on a hill.

Ray S

I'm confused. Do 986's and 996's have this or is it only 987's and 997's?

redridge

it appears that the 986/996 have this as well....

Gator Bite

It's not really a "Clutch Delay Switch". A "Clutch Delay" would slow the release of the clutch, and it's usually a mechanical device like a manifold with a fixed orifice to slow the flow of hyrdaulic fluid from the cluch slave cylinder. BMWs (expect M models) use a clutch delay to make the cars easier to drive / harder to stall.

The switch you're talking about does one thing for several reason, one of them overlaping the benefits of a clutch delay. It retards the timing when you press the clutch, and for a short time after the clutch has been released.

So by removing that switch, you may in fact feel some added sharpness to throttle response when shifting. Because now you have a sharper timing curve. But you will be castrating all 4 of the benefits mentioned above. To summarize:

aviography

Great information, I might try it in lieu of the Sprint Booster.