I removed my serpentine belt ran on dyno and gained almost 20 hp. Be carefull if you do this and only run once as your water pump will not be cooling your engine. You can also start to lose power and misfire after your battery runs down because of no alternator. Has anyone tried running at drag strip this way? If so what kind of times are you getting? I know its stupid and a little dangerous but so simple and quite a lil bit of power! p.s. i didn't overheat on that one run. Nor did i misfire.
stock 2.4
Um, You have a 2.4? The serpentine belt doesn't run the waterpump. Timing chain does that. All the serp. belt does is run on the crank pulley, alternator pulley, a/c, tensioner.
Car is for Sale!Supercharger kit is for sale!
oh i forgot the water pump is ran by chain. im an idiot. anyway it still worked!
maybe thats why it didnt overheat
Do you have dyno sheets showing what power you made with a belt and without a belt?
FU Tuning
Yes, ill se if i can take a pic of them and load them on!
You can see a tenth or more shaved off the 1/4 mile without the serp. Old trick i use at the tracks. Gotta put on the belt after every run and cool the car down tho lol it'll boil over easy...usually after one run and back to the pits it's already in the red.
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'96 Cavalier Good ol' Pushrod 2.2
-24X,000 miles on factory build
-Some oil loss between changes, me thinks it be rings.
Like said above, the water pump on a 2.4 is run by the chain. 20hp is not possible from just the belt. i've seen dyno on a Ho with not more than 7whp.
Gilles
2.3 Ho
on my ecotec i used to do this at the track all the tiem andit was .3 gain consistantly
The one, the only, ME.
Mfk-223 wrote:Like said above, the water pump on a 2.4 is run by the chain. 20hp is not possible from just the belt. i've seen dyno on a Ho with not more than 7whp.
I remember hearing 7whp gain, which 7 hp at the wheels is worth it.
FU Tuning
Mfk-223 wrote:Like said above, the water pump on a 2.4 is run by the chain. 20hp is not possible from just the belt. i've seen dyno on a Ho with not more than 7whp.
eh, maybe he meant at the crank? i dont think 7whp would = to 20 crank, but im sure its gotta be close.
JuggaloZeke wrote:Wouldn't work for me. 
I don't know, with the GM charger you'd be suprised after heatsoak. I should've tried it, bet that damn thing would have made a better intake manifold than blower
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Joe Schulte----check your e-mail.
I don't know if I'd run without the belt personally. Just seems too risky to me. Of course, my car is a daily driver, so I have to be careful with it.
red04cavy wrote:Joe Schulte----check your e-mail.
I don't know if I'd run without the belt personally. Just seems too risky to me. Of course, my car is a daily driver, so I have to be careful with it.
Please explain how running without a belt at the track is risky?
FU Tuning
it does nothing bad its just a pian inithe ass getting on and off and hoping you can get it back on before dark so you dont have to worry about making it home
its a lot of trouble for .3 jsut at the track
The one, the only, ME.
why not remove all the oil and coolant out of it for weight savings while your at it?
This is the stupidest post of all time
1989 Turbo Trans Am #82, 2007 Cobalt SS G85
How is it stupid? All the underdrive pullies and stuff people buy is not called stupid. Why is this? it gives you a lot more hp than just pullies. Although it wouldn't work with your supercharger.
Rodimus Prime wrote:why not remove all the oil and coolant out of it for weight savings while your at it?
This is the stupidest post of all time
Its not nearly as stupid as the post you just made.
I know this is a trick that muscle car guys have been using for years to knock a few tenths off their ET. Not sure if there any negative side effects from this on a modern fuel injected motor, keep in mind we have a lot more electrical components running out cars than the old muscles cars did.
- 93 mph in the 1/8 mile
Member of J-Body Of Michigan.
actually a good portion of the muscle car guys (or atleast the guys that i grew up around) just ran a kill switch for the alternator (basically just interrupts the feild wire causing a no-charge situation) it was good for a tenth or two in the 1/4 and killed all drag caused by the alternator.
mind you this was on manual fan cars, with everything else drivin. so killing the ps pump and switching to an electric fan/waterpump and killing the alternator on 1/4mile runs was a good way to take some time off while keeping everything "as easy as hitting a switch"
_______________________
** Flat Broke Racing Inc.**
I used to do this on my old "Bottle Fed Zed"... only at the track, of course...
I never had any problems.
Rodimus Prime wrote:why not remove all the oil and coolant out of it for weight savings while your at it?
This is the stupidest post of all time
You are a moron for posting that. This is a real benefit for power, not trying to jack someones motor up. V8's having been doing this for years. Electric water pumps, electric fans etc.... Yes our water pumps are not on the belt (well ofr most of the J motors), but still driving the belt, ac, alternator is robbing some power. Might only be a few hp buta few hp could mean the difference between winning and losing.
FU Tuning
Maybe I should mention that I never ran the cavvy without the belt...you kidding? transverse mounted engines suck at leaving room for you to do that kind of stuff. Longitudinal is where it's at.
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'96 Cavalier Good ol' Pushrod 2.2
-24X,000 miles on factory build
-Some oil loss between changes, me thinks it be rings.
