UD crank pulleys

[S14Zilvia]

For those of you who have installed crank pulleys (ASP or UR), did you notice a big difference? I guess what I mean is would you spend the money on it again? For 120 bucks it seems like even for a little gain it would be worth it.

Right now I have exhaust, next is intake for sure, but after that is a ?. I'm thinking the pulley, cams, and/or headers... but I'm not sure which is the best step after the I/E.

[bruinbear714]

For those of you who have installed crank pulleys (ASP or UR), did you notice a big difference? I guess what I mean is would you spend the money on it again? For 120 bucks it seems like even for a little gain it would be worth it.

Right now I have exhaust, next is intake for sure, but after that is a ?. I'm thinking the pulley, cams, and/or headers... but I'm not sure which is the best step after the I/E.

Well, I can say I'd rather spend $600 on an ASP Pulley, Injen CAI, and dual 12" electric fans than on the N1 Duals. I don't know how much you spent on your exhaust, but that's just an example.

You will notice the engine responds better. As for the big difference, its about 5-6hp (says ASP), but I'm not sure if you can feel it. You can pick it up for $100 at rpmoutlet.com

[S14Zilvia]

Well, I spent 460 on my Hiper and I think it was well worth it. After taking out the stock exhaust and just looking at it, I can't believe the car even runs with that crappy system.

Intake is next, and I guess the pulley too.

You notice a lot of increased response from the fans as well?

[bruinbear714]

Well, I spent 460 on my Hiper and I think it was well worth it. After taking out the stock exhaust and just looking at it, I can't believe the car even runs with that crappy system.

Intake is next, and I guess the pulley too.

You notice a lot of increased response from the fans as well?

Yup, and engine runs quieter without that big fan moaning everytime you accelerate. You get better gas mileage also.

I was getting over 350 miles per tank on average before my header. Havn't filled up the tank yet with header installed.

[fliprayzin240sx]

since were talking about UD pulleys, If you put a system in...lets say 600w amp and 2 10' subs...would you DEFINITELY need a battery? Or could the alternator still handle it?

[bruinbear714]

I havn't had a problem with the pulley and electric fan combo. Then again, I don't have monstrous amps running in the back of my car with 12" subs.

I'll let you know when I install my amps, and 10" sub though.

If it's a problem you can always bump up your idle to around 950ish.

[fliprayzin240sx]

hmm...bump up idle huh? can that really compensate for that?

[SR20DET240]

sure it will compensate some.

for instance, try this:

At a stop light, turn on your rear defroster and watch the voltmeter slowly go down. Then when it has gone down, just bump the throttle and watch it go back up.

I would recommend going with a higher output alternator rather than raising the idle though. Anybody know where to get HO alternators for the 240sx?

[TrunkMonkey]

I would recommend going with a higher output alternator rather than raising the idle though.

i agree with you 100%. you'll burn more gas raising your idle. a high output altenator should be the first upgrade for anyone who is into sound systems for their automobile.

Anybody know where to get HO alternators for the 240sx?

any auto electric shop should be able to find what you need.

-demetrius

[bruinbear714]

I wouldn't recommend getting a higher output alternator unless your really stressed for power. The reason is because getting a higher output alt will put more strain on the crank. More windings in the alternator = more harder to turn.

[Aries]

harder to turn = less horsepower to the ground.

[raging panda]

I havent heard of anybody having a problem with their alternator after installing an ud pulley. Would a HO alternator really make a noticeable difference in power though? I'm sure you might know if you are a dedicated racer or something like that, but I wouldnt think that you would notice if it was just a daily driver. I guess it might depend on the alternator though. I know some you can get that put out just a little more apms and some put out major amps.

[TommyyJ]

if you do have a big stereo system, just turn it down when you come to a stop..

[BabyboyDeLa240]

Hey About your UnderDive Pulley... well here is a site from the magazine Import Tuner and they have a 96 240sx with three bolt on and complete dyno's on the three(5Zigen cat-back exhaust, Injen Intake w/extension and the UR Pulleys)... The three combine gave over 20 hp plus and 20 plus torque... the pulleys gave some great power throughout the band... go check it out here is the direct link... So with the dyno sheets you now know what to expect and about how much. http://www.importtuner.com/tech/0210it_powerpages/

[I am Technoman]

Hey About your UnderDive Pulley... well here is a site from the magazine Import Tuner and they have a 96 240sx with three bolt on and complete dyno's on the three(5Zigen cat-back exhaust, Injen Intake w/extension and the UR Pulleys)... The three combine gave over 20 hp plus and 20 plus torque... the pulleys gave some great power throughout the band... go check it out here is the direct link... So with the dyno sheets you now know what to expect and about how much. http://www.importtuner.com/tech/0210it_powerpages/

I do not believe them! No way, id say around 11 RWHP max with those mods...

[BabyboyDeLa240]

I do not believe them! No way, id say around 11 RWHP max with those mods...

They have dyno sheets showing after each install. You should check it out. They have another POWER PAGE for a 95 240sx but they do not have in online. Its in the magazine. So if the dyno charts is not enough then i don't know what else to say...?

[bruinbear714]

They have dyno sheets showing after each install. You should check it out. They have another POWER PAGE for a 95 240sx but they do not have in online. Its in the magazine. So if the dyno charts is not enough then i don't know what else to say...?

What they probably referring to is PEAK horses and what Technoman is refering to is AVERAGE horses.

Peak horses occur at different rpm's for each mods, but if you average it throughout the rpm band, you'll end up with the average figure, which for me, is a little more meaningful then saying my intake gave me 12hp, my pulley gave me 8, my header gave me 12hp. That's a total of 32hp!

Import Tuner does a good job on the mods and before/after dyno sheets, but don't be dissappointed when you perform the same mods as them and your outcome isn't up to par with theirs, but do feel lucky if your engine comes out as good as or better then the #'s they got.