AFX Pulleys?

[Fez1085]

I am seriously thinking about buying some AFX pulleys from howell automotive for about 140.. i've seen Pulleys from cosmoracing.com for about 80 bucks. I really like the "pros" about pulleys, i hear our stock pulley is about 10lbs, and i've seen aftermarket pulleys that are around 2 ppunds, and since every pound taken off the crank is on average 2.7hp, then by doing the math, thats like 21hp at the crank.. but from what most ppl say, they get like 10-15hp.. but i still like those power gains, but I think in the end, i'll go with the AFX's b/c from what most ppl. say about them, they are pretty good. The only thing i am worried about are the "cons".. since i have a 800watt amp.. will i be okay? i know some guy on this forum had a 500 watt amp, and was fine. Also i know a few guys on this forum have driven a little bit, and and then the next day their battery is dead.. am i going to have to worry about my battery dieing? also during my research, i've come across something called Harmonic Damening or something? From what i've researched, i guess thats only a problem in the turbo models, and not the nt's.. can someone enlighten me on that topic? also, since i have an aftermarket header, without a heat sheild, do you think my header is creating so much heat that my car will over heat since the water pump isn't getting a lot of power? any input would be great, thank you!

 

[l3CuBeD]

Hey i got an af/x on my car. Its a bi*** to get the old one off, but as far as power loss i didn't notice any. Actually at idle on a cold day its about 800 rpm so ur system might not be great at idle, but other than that ur fine. You wont notice any other power loss when driving, just when its sitting there in the driveway warming up or wutever. No trouble at lights or anything either. Nothing happens to the battery either it will only die if u leave ur headlights on or something not from the pulley. So far mine is good. So u should have no problems. Hope that helps

 

[speedy13]

a udp will not affect you waterpump b/c your waterpump is driven by your timing belt and no your headers should not be a factor why your car is overheating.let me know how your udp worked out since thats my next mod.bout your amp though couldn't help you there.just gonna have to research more.peace

 

[Fez1085]

my car isn't overheating.. but i heard that the pulleys run your accessories, like the a/c, power steering, water pump, ect... so i figured since less power is going to the water pump..the easier it'd be for the car to overheat.. but i guess from your info, thats untrue, since it doesn't run the water pump.
as for my system, i did some research, and i guess i cant have it playing while the car isn't on, or it'll die, and while the car is idling, it wont sound as good b/c there will be less power going to it. So i guess i should be fine. I might get a capacitor though, so my lights wont dim that much.
i have 44 bucks right now, and pay day is on friday.. so i'm thinking in the next few weeks i'll get the UDP, but i'll let ya know. I hear its the best mod for us n/t owners

 

[dr1665]

For the $140 you're going to get the crank pulley - singular. No others unless you have some sort of deal worked out with Howell Auto. It doesn't make any more horsepower, it simply frees up horsepower you already have and lets you put more of that 140 stock to the ground.

The AFX unit is sweet. Weighs maybe a third of what the OEM does and is noticably smaller. You shouldn't experience any negative side effects while running one unless you sport a boomin system that your neighbors probably hate anyways.

 

[totaleklipse97]

The AF/X unit is a nice unit for the price. You can trust howell since they are so involved in the 2gnt community and the 420A community also. People have compared the AF/X and Unorthodox UDP in many occasions and no-one has ever proved any difference between the two. The only difference between the 2 that i can think of is the UR is a 2-piece unit so you can detatch ALL of your acc. at the track and reduce weight even more on the crank. But they are basically the same weight and size. Don't worry about the water pump or the alternator to charge the battery, my friend from indy had a HUGE system with tv's and lighting and NO drain on the battery. You will love the gains, even thou my car only ran for seconds with the UDP (long story) the gains were just incredible.

 

[jayden1]

Do you guys think by changing the weight of your underdrive pulley that your going to through you crankshaft out of harmonic balance and in the long run bust cranks? Im just wondering cause i read an article from grapeaperacing.com saying if you do that, then your risking breaking your crank. I emailed the author and he responded that if u get one make sure you lighten the other side of your crank (flywheel,clutch) and that you have your engine blueprinted and balanced. Im just wondering cause I havent had anyproblems with mine but my buddy did in his civic he broke his crank and he thinks it was because of the underdrive pulley. I dont know if theres any truth to what that author said.

 

[Morphius]

You are playing roulette by deleting the dampening on your crank. It will damage your main bearings and in the end, potentially take out the crank. If it wasn't needed, do you think the manufacturer would add it for kicks and giggles?

Think about this....... can you name a racing org that DOESN'T use a harmonic dampner on the crank? Maybe NHRA top fuel (30 secs of run time or less) but that's about it. Hell, NASCAR, INDY, F1 etc. run them even for a race as short as 200 miles.


Bad move to delete it. There are people on the site here that have gone to that and taken the main bearings out on a fresh rebuild.

 

[totaleklipse97]

well you all sound concerned about "harmonic balancing" on the crank. Well DON'T BE!! To be honest i looked at the stock crank pulley and the UR racing pully and really there wasn't shit bit of difference. I have a 97 GS and i have replaced mine. The big reason why you shouldn't be worried about harmonic balancing on a 2GNT is that the crank is internally balanced where the 4G63/4 are externally balanced. We do not rely on the crank pully to keep our crank perfectly balanced, and anyway the pulley are CNC machined out of a solid piece and are AS balanced as our crank is. If you do not believe me there is TONS of information available at 2GNT.com to support what im saying.

 

[jayden1]

Originally posted by totaleklipse97
well you all sound concerned about "harmonic balancing" on the crank. Well DON'T BE!! To be honest i looked at the stock crank pulley and the UR racing pully and really there wasn't shit bit of difference. I have a 97 GS and i have replaced mine. The big reason why you shouldn't be worried about harmonic balancing on a 2GNT is that the crank is internally balanced where the 4G63/4 are externally balanced. We do not rely on the crank pully to keep our crank perfectly balanced, and anyway the pulley are CNC machined out of a solid piece and are AS balanced as our crank is. If you do not believe me there is TONS of information available at 2GNT.com to support what im saying.

i see what your saying. what is it internally balanced by? Ive seen that some places even say before buying the unorthodox pulley that your engine should be blueprinted and balanced. IM jst curious. but im going to do a search on 2gnt.com

 

[Morphius]

Originally posted by totaleklipse97
well you all sound concerned about "harmonic balancing" on the crank. Well DON'T BE!! To be honest i looked at the stock crank pulley and the UR racing pully and really there wasn't shit bit of difference. I have a 97 GS and i have replaced mine. The big reason why you shouldn't be worried about harmonic balancing on a 2GNT is that the crank is internally balanced where the 4G63/4 are externally balanced. We do not rely on the crank pully to keep our crank perfectly balanced, and anyway the pulley are CNC machined out of a solid piece and are AS balanced as our crank is. If you do not believe me there is TONS of information available at 2GNT.com to support what im saying.

Do some reasearch. Internal vs external balanceing does NOT have to do with the crank dampener. Notice the word "dampener". It does not mean "balancing". I never referred to "harmonic balancing"

 

[Damn 2nd Gear]

so would it be a bad idea to use it on a 1st gen, since im exturnally balanced?