Will a super charged engine run at all if the SC belt breaks or are you stuck on the side of the road until you get a new belt on?

I know you're going to say carry a spare belt, so let me just add I have a new spare already, but I have a little noise in my fan (bearing) bracket which I think also drives the SCer belt right? So I'm a little worried about that bearing going out on me.

 

Yes it does, but only as long as you have battery which lasts about an hour. Switch off all electrical stuff including AC, radio etc.





(Speaking from experience with FOUR broken belts )

 

Cool thanks!

 

How does a supercharger belt have anything to do with electrical stuff?

Maybe I'm missing something, but if the belt breaks, it will block airflow to the engine. The roots type compressor that the supercharger is, i believe, seals quite well, and if they are not turning, then there shouldn't be any air getting to the engine. Correct me if I'm wrong.

 

The SC belt also spins up your alternator, ie alternator not running the battery is taking on the full electrical load.

 

It will "run", but it's a limp mode at best. Peformance sucks. You can limp it home via backroads, but the freeway is not going to be an option.

 

If you have a properly tuned engine it will run fine when your "off boost"

Also almost all S/C's have something called a BYPASS valve that opens up when your idle or cruising to bypass the impellers.

 

How many times have you had a belt break? It has never happened to me personally in 20+ years of driving.

 

Twice on this rig. Both times running the rig hard in three digit heat. My heep had a pulley alignment problem and it ate belts like breakfast cereal.

 

The truck should run rich but it will still run.

James

 

i have half a belt on mine right now as i wait for the new belt to arrive Still runs great....

i destroyed it testing my new pulley "mod"

 

You'd be right except for the bypass valve....it will run with no belt but not very well.