Next time you dyno can you run a little experiment?

I kick myself for not running this test last week when I was on the dyno so maybe you can do it and shed some light on a question.

With the SRT setup (before or after your pulls) and at idle, watch the SC pulley and then ask the operator to slooowly raise RPMs, very slowly, like granny going to the supermarket on her last gallon of gas. Have him hold it at 500 rpm, then slowly to 1000, then 2000 etc...and see if and when the SC clutch engages.

Then, with the SRT back at idle give it a brief but hard punch of the throttle (load) at see if the SC engages...

Just a simple test with the eye ***** in a controlled environment.

 

+1, damn good idea! So much to think about when your car is on the dyno. Easy to forget the simple things.

ps. please dont stand directly in front of the car.

 

Sounds good. But what are we looking for? I'm reading about seeing when the clutch engages. Is there a certain point of which it should engage? I just want to know what I'm looking for. Thanks.

 

From my experiences at about 1500-1800 the clutch will kick in. I have added indicator lights in my SRT, to confirm the magnet operation, while "driven" on the street.

Enjoy, Woody

 

Well the common conception is that the SC engages as "load requires" or at 3K RPM

Waldig and Steve Hellums have installed LED's to display when power is being applied to engage the SC clutch and IC Pump. They say the SC in on almost all the time no matter how it's being driven.

So to test the common theory - if an SRT6 is on the dyno with the hood open - and the operator eases on the throttle - one can observe when or if the SC kicks on, and if it does kick in during easy, light driving, at what RPM?

If not - when you stomp on it (Add Load) does it kick on.

I think we all know the SC will kick on from a dead stop if you romp on the gas from idle. But what about at mellow 2K RPM and then jump on it?

Just a test to see if the SC is "load required" to activate...

Then

 

i know if you put the car in 1st gear from a stop and slowly give it gas, the SC will engage at 2900 rpms. other than that it is on all the time until you come to a stop again. leaving the trans in "D" will make the engagement way less noticeable.