Ask me how AWESOME the underdrive pulley crank is!

[chad1200]

go ahead.... ask me! ok, i'll tell you anyway! IT ROCKS! inexspensive mod that makes a noticeable difference ESPECIALLY at low RPMS (>3500) where, i'm assuming, a lot of our cars are lacking.

my buddy went on ebay and bought me an entire underdrive pulley set for -get this - $89. it's not a name brand (Unorthodox, Stillen) but it does the exact same thing. those brands will cost you $200-$300. now that i see the difference i would have even paid that.

after i installed my plenum spacer it seemed like my car lacked UMPH at low rpms because all of my power was being generated at higher rpms. with the underdrive pulley crank i have more low end go go than before. chirping my tires used to be a problem (great tires!) but now i give it gas i'm up at my peak rpms in NO TIME!

my a/c works fine. my power steering works fine. my water pump works fine. i don't understand why more people haven't installed these! THEY DON'T EVEN VOID YOUR WARRANTY!!!!

as far as i'm concerned, the underdrive crank puley/pulley set should be a standard mod like intake and exhaust.

i've done a descent amount of research on these so please feel free to ask questions.

my name is Chad Thompson and approve this message.... now go get you a set of your own!!!! TRUST ME!!!!

[AZhitman]

I pulled mine off when several other local G owners experienced severe problems with the crank keyway and bearing wear, causing premature oil leakage from the crank seal. One even destroyed his crank (trijicon).

Not to burst your bubble, but I paid over $200 for mine and GAVE it away, just to stay safe.

And please, please don't tell anyone "they don't void your warranty". Pursuant to Magnussen, any modification that can be directly attributable to a failed component CAN result in denial of warranty work.

5 hp ain't worth it.

[99QX4]

my name is Chad Thompson and approve this message.... now go get you a set of your own!!!! TRUST ME!!!!

My name is Chad Thompson, I'm from the Internets, TRUST ME!!!

Edit: wrong account logged in -_-

[Omegamerc]

My name is Chad Thompson, I'm from the Internets, TRUST ME!!!

Edit: wrong account logged in -_-

TADA!

[99QX4]

TADA!

Posting under my name?! j/k

[chad1200]

well HOLY CRAP!!!! that sucks. i am chad thompson and unfortunately i did approve that message.

where were you guys when i posted questions about the underdrive pulley set????

i did ask my infiniti dealer and they said they wouldn't void MY warranty. they even sell them! not to say you're wrong but i guess i should have stated that MY warranty wouldn't be voided.

is there anyway to protect or change the bearings?

shame on me! sorry guys!!!!



p.s. i meant trust me, you'll love the way it drives.

[tralls]

I'm actually interested in this. I have heard great things about doing this. I have a friend that has done this to many of his trucks with great success. Chad where did you locate yours? Whats the name of it?

[chad1200]

do a search on ebay for g35 underdrive pulley set. you'll find a guy who's selling them for $83. not a brand name. my friend got them for me for my b-day. Stillen and Unorthodox Racing both make them, but they're more expensive.

[chad1200]

first thing tomorrow morning i'm going to go talk to the performance parts guy at my DFW dealership and ask him about the bearings and any other issues that could occur by installing these. i'm still seeing a lot of people that have had them for a while and have seen no problems. i'm going to keep mine on until i get some hard core answers.... or if my dealer says they'll warranty any problems that occur by having them installed.

[chad1200]

BTW.... my earlier post on underdrive pulleys has made it big time!!!!

#1 on google if you search for "g35 underdrive pulley"

i know, in know....

[G_whizz]

Well Chad...firstly I agree with you on asking for help in your original post so to everyone who decided to post NOW that you installed them.

I am happy to hear you are pleased with the results and hope that your car doesn't suffer any "hiccups"

keep me posted as this is a mod I may be interested in doing. You did know you we're the test subject on this right?? LOL

Geez...and you other guys (and gals) be nice...Chad is stressed enough now

[joe603]

One thing to know is that if you have an aftermarket stereo system, DON'T use underdrive pullies! Our alternator's are rated too low as it is, and underdriving it will make things worse.

Be careful with this mod...

[chad1200]

is it possible that some of the people who have problems might not have installed their's properly? i don't see why a company like Stillen would make a product that could destroy a crank. it just doesn't make sense. technically only ONE person posted something negative, anyway.

[chad1200]

update - all tolled i've trolled the internet for about 6 hours in the last 2 days. i've decided to buy an Unorthodox Racing crank pulley to replace mine, which is not a name brand. Stillen sells them on their site and they had the best price. my dealership even sells them. i read in a few places that the people who were having issues were using the cheaper sets off of ebay and not UR pulleys.

[zozoka1212]

smart idea and good job by the way. keep us posted please.

Zozoka

[TenTill4Z]

I can't stress enough how much I'm relieved to hear that you're going with the UR pulley instead of the no name. The no name pulley you had bought isn't balanced and made pretty cheap will cause slippage and well there goes your engine. BTW this mod !!!WILL!!! void your warranty. I blew my first engine on my Z because something was wrong with the factory oil pump and it was starving my engine of oil and eventually it bent a couple of my rods. Well I took it into Nissan because I talked to them on the phone and I had explained to them my modifications and asked if it would void and they said no come on in and we'll take care of you. Well when I brought it in, the second they took a look at it and saw my pullies they said NO GO on the warranty. Just be careful with what the dealership says because my dealership sells them to but it doesn't mean it stayin under warranty. My 2 cents
Modified by TenTill4Z at 12:21 PM 5/23/2007

[pits200]

If the pulley needs to be harmonically balanced and is not CNC machined correctly, you will destroy your crank in the long run.

The machining process is why the name brand pulleys are more expensive, its because they will not cause any vibration while rotating while the more inexpensive pulleys may not be as balanced.

[TenTill4Z]

If the pulley needs to be harmonically balanced and is not CNC machined correctly, you will destroy your crank in the long run.

The machining process is why the name brand pulleys are more expensive, its because they will not cause any vibration while rotating while the more inexpensive pulleys may not be as balanced.

Yup that is exactly true. Harmonic pulleys are also a way to go if you so choose but they're a little more expensive as well but you get what you pay for. ATI makes a great harmonic damper

[joe603]

Well when I brought it in, the second they took a look at it and saw my pullies they said NO GO on the warranty. Just be careful with what the dealership says because my dealership sells them to but it doesn't mean it stayin under warranty. My 2 cents

Modified by TenTill4Z at 12:21 PM 5/23/2007

Why didn't you put the stock pullies on before taking the car to the dealership?

[TenTill4Z]

Why didn't you put the stock pullies on before taking the car to the dealership?

Well what happened is I called in first and asked if anything I've done would have voided my warranty and they said no so I brought it in and wouldn't ya know it, they declined me but didn't put me in the database as a declined warranty so I just took it to another dealership in town and that time I put it all pretty much back to stock. They still gave me a hard time with wanting to warranty my car and I had put my car all back to stock except for CB exhaust.

[chad1200]

again. i was given this as a gift. i would've spent the money on a good one.... and i did.

i'm going to inquire HEAVILY with my dealership about the warranty. it probably won't be an issue now that i'm bying a better pulley.

i do reccomend it, as far as performance goes. it wasn't the 5 hp i was going for. it's the more hp at lower rpms that is ABSOLUTELY AWESOME.

after i report back in a few months you guys have to get one!!!!

p.s. no problems with power steering or ac. you can support up to a 600 watt rms stereo, too.

[Trijicon]

Hello all...

I am not going to make this long winded...

Crank pulley = Bad in the long run.

Pics:







Installed correctly... Yes.

buyer beware... and OMFG... Ebay pullies on a nice car???

Good Luck.

[chad1200]

was that an Unorthodox Racing puuley or an ebay one?!?!

[chad1200]

BTW i'm also going to ask Stillen what their warranty is on their UR pulleys. i'm going to get to the bottom of this whole thing so we can all benefit!!!!

[AZhitman]

Guys....

STOP!!!! Freaking THINK!!!

There are TONS of better ways to pick up 5 hp!!!

Bump your base timing a degree. Take your spare tire out. Clean your intake. Add a pair of high-flow cats. Add 3 psi to your tires. Switch to synthetic fluids. For God's sake, throw on a K&N if you must.

A crank pulley is NOT a smart way to get such a useless amount of power.

[chad1200]

AGAIN! it's not the 5 hp i was looking for. i'm not even sure if i would notice 5 hp. it's the throttle response, faster acceleration, and more hp available at lower rpms. my car pulls way more at 2k rpm than it ever has. that's not the 5 hp.

[WESIDE]

Looks like a knock off in the pictures. I have never seen authentic UR pullies in blue. Always a billett aluminum finish. I just paid $350 for URss pullies. I will chime in after the install. Also looks from the pics that he either uninstalled them incorrectly or was missing the sleave that was built into the stock pully. He definately had an oil leak right thurrrrrr. (read the instructions)

[kdfja1]

i think you guys are being too harsh on chad the guy seems like he only wants to help out. Its a great idea and the low end hp eh i wouldnt mind. But with all these negative feedbacks on the pulleys i myself wouldnt get them but i respect how chad is doing so much research on this product. he might be pushing the product a lil too hard and getting off the wrong impression.

[G_whizz]

I agree...Chad, your research is greatly appreciated..good job!

[TenTill4Z]

Guys....

STOP!!!! Freaking THINK!!!

There are TONS of better ways to pick up 5 hp!!!

Bump your base timing a degree. Take your spare tire out. Clean your intake. Add a pair of high-flow cats. Add 3 psi to your tires. Switch to synthetic fluids. For God's sake, throw on a K&N if you must.

A crank pulley is NOT a smart way to get such a useless amount of power.

I think it's worth it IMO Greg. Get the ATI Harmonic damper and you won't have any problems and it's not just about the 5hp you also free up the movement and make it easier on your engine to spin that bad boy due to the loss in weight you'll have that faster rev up because of the lightened weight on the crank and it'll be completely balanced and safe. It's like a smaller version of switching up the flywheels on our cars. The only problem is when people don't shell out the dough for the proper products thinkin they can save a buck or two. But if you really wanna save a buck or two please do it on something that isn't vital to your engines life such as buy a cheaper intake or cheaper exhaust but don't skimp on the important **** like that.