OK, either I am reading too much or there is major confusion on the KSB
with the wax motor or the magnetic switch style.
I have the wax type and have never had power to it, am I wrong??

The confusion is, does the wax type have to have power all the time OR
only when the engine is cold.

When does the magnetic type have power, cold or hot?

I am talking about power at the KSB connection.



lOsT iN La lA lANd


59

 

There is a lot of confustion. If you have a non-intercooled pump, you have the wax-motor styke KSB. It works opposite of the electro-magnetic style on the IC-ed pumps. Running it without 12v means you have the timing advance from the KSB all the time. There has been speculation that running in this manner can be hard on the pump. In your case, apparently not so much In my case, since I'm running so much initial timing, I have the KSB tied to the shutdown solenoid, giving the KSB voltage immediately, rather than when the switch in the manifold closes.

Anyway, to test your setup, you should have NO voltage to the KSB when the engine is cold. Once the intake temp hits 59 (I think) you'll get voltage at the KSB.

Hope this helps some.

greg

 

When you hook it up you will find that the truck gets a lot of bottom end back, but it will still feel the same up to.

Magnetic KSB's get power only when it's cold.

 

That's the simple way to answer the question.

Somebody here told me last year I would kill my pump IF
I ran it with power to the KSB.

The pump is FAR from dead as of today


59

 

What's a KSB?

 

It's an acronym for a long German word that loosely translates to 'cold start aid'. When the air in the intake manifold is below a preset temperature, the KSB ups the internal pump pressure, causing the timing piston to go to full advance. The benefit of this extra timing at cold idle is that the fuel is given more time to burn, thus less white/blue smoke while combustion temps are coming up. Once the intake is up to temp, the KSB shuts off and pump timing is again controlled by RPM.