CK5
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throwing belts, high rpm.
- Thread starter YZEATER
- Start date
British Slave
1/2 ton status
- Joined
- Jul 25, 2007
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Check the alignment of the pulleys.
YZEATER
1/2 ton status
British Slave
1/2 ton status
- Joined
- Jul 25, 2007
- Posts
- 2,086
- Reaction score
- 2
I did. But will it hurt to check it again? And at high RPM it has to be perfect, not close to perfect.
YZEATER
1/2 ton status
i'm changing the pulleys to something else. i got them as close to aligned as possible.
kevin400ex
1/2 ton status
deeper groove racing pulleys might help. moroso has some, or for the super nice stuff look at cv products or jones pulleys. you might want to try to add some sort of cover to keep the mud out as well. it dont take much debris to throw a belt either.
YZEATER
1/2 ton status
i do need to make some more mud shields for under neath the truck, but the first 2 weekends it started throwing the belts, there was no mud anywhere on the engine. the bog this last weekend, mud gets everywhere, it's really sloppy and thin.
I bought a set of these for all my demo derby engines, I know you are running an electric water pump now but I think the just the lower pulley would really help you and reduce the speed of the alt. and ps pump, my engines see 8000rpm, Im hard on em, and have not lost a belt since switching to these pulleys. not too pricey either.
http://www.speedwaymotors.com/Chevy-Cast-Aluminum-Reduction-Pulley-Combo-Long-Pump,1809.html
http://www.speedwaymotors.com/Chevy-Cast-Aluminum-Reduction-Pulley-Combo-Long-Pump,1809.html
You are using cheap belts aren't you? Go get yourself a good GATES V-belt and as long as your pulleys are straight and aligned your problem will probably go away. I've seen it happen more than once, even with brand new belts. Autozone (and other cheap) belts suck. People buy a new Autozone belt, with a performance engine, and then the first time they rap the throttle they chuck it right off. The belt is most likely your problem if everything else is right. Gates make the best v-belts. Good year makes the best serpentine belts.
YZEATER
1/2 ton status
finally got around to installing a set of serpentine pulleys my sponser hooked me up with.
the crank pulley is only about 1" smaller in diameter, and the alt. and power steering are about the same size. these are 6 groove pulleys but i could only find a 6 groove belt for the alt so far, i have a 5 groove belt on the pump.
i'll try these out this coming weekend and see if it's any better. if not, i'll try to find a smaller crank pulley yet. the v-belt pulley i had on there was over 7" in dia.
http://i130.photobucket.com/albums/p276/YZEATER/85 chevy 1-ton/100_2571.jpg
the crank pulley is only about 1" smaller in diameter, and the alt. and power steering are about the same size. these are 6 groove pulleys but i could only find a 6 groove belt for the alt so far, i have a 5 groove belt on the pump.
i'll try these out this coming weekend and see if it's any better. if not, i'll try to find a smaller crank pulley yet. the v-belt pulley i had on there was over 7" in dia.
YZEATER
1/2 ton status
well, they stayed on for 6 passes thru the pit. the truck didn;t have to really dig in this weeks mud though.
the belt on the power steering pulley did start to try and come off, it has one rib off the edge of the pulley.
this sunday is another bog, and it's longer so we'll see how it works. i think there is too much drag from the hydroboost and it creates slack for it to crawl off the pulley.
when i get some time, i'm gonna convert to vaccuum brakes.
the belt on the power steering pulley did start to try and come off, it has one rib off the edge of the pulley.
this sunday is another bog, and it's longer so we'll see how it works. i think there is too much drag from the hydroboost and it creates slack for it to crawl off the pulley.
when i get some time, i'm gonna convert to vaccuum brakes.
