93Fury

Is this an ok thing to do and how do you do it?

What do you gain by doing this? Should I try it?

unixcowboy

KSB advances IP timing to make starting easier.

Some do wire a switch so they can advance it running down the 1/4.

Will actually hurt if you leave it wired hot.

oldcool90

On the inercooled trucks you add 12 volts to advance the timing. And on the n/ic trucks you unplug the ksb,take 12volts away to advance the timing

Old Smoky

I just had a switch in the cab so that I could turn it on and off as I wanted. I would only turn it on for short periods of time. It made 39hp on the dyno.

Mike

wannadiesel

Yep, definitely a good thing to have on a switch. I have a "magic wire" that I loan out to folks at dyno days. Goes from the shutdown solenoid to the KSB.

93Fury

So throwing a switch in and giving it a flick on the sled won't be a bad idea then. Thanks alot. We have a local pull coming up in about 2 weeks, so hopefully I can do a little better than my previous 255.9 ft.. Thanks for the advice.

PeytonMaterne

Why can't it have 12 volts to it continuously? What bad happens?

93Fury

Increace pressure in the IP? Maybe?

PeytonMaterne

And on the non-ic is it OK to leave it unplugged? Does that cause any problems?

wannadiesel

Makes the pump run hotter, it's best to not be in "KSB" mode continuously.

oly_fab

Is this true? As my 91 non I/C when the wire is hookedup it gets hot in the area of the KSB.

Stu

wannadiesel

The non-IC trucks use a wax motor KSB that needs 12 volts to keep you out of KSB mode. A wax motor KSB solenoid uses electrical current to heat a wax pellet (like in a thermostat) that expands and moves the plunger, that is why it gets hot.

feveree40

Is my KSB working? I checked and i have system voltage going to it, but unplugging it doesn't seem to do anything. I can't hear or feel a difference. I would think 35hp would be noticable and a difference could be heard at idle.

wannadiesel

The wax motor style works slowly. Your needs to be left unplugged on the dyno.

feveree40

ok, when i tried it last time the truck was running for a few minutes before i unplugged the KSB. I guess the wax was already warmed up, and takes a while to cool down. The truck is cooled down now, so i'll try to unplug it before i even start it.