what is the consensus on average time improvements of an underdrive pulley in autocross? my opinion is that it isn't even enough to be noticed, since the ur pulley for my car only drops 12 oz or so. any other opinions? most specifically, is it worth $350? (i'm not interested in if it will blow up my motor or not)

nate

 

I don't know about them Honda cars but on the SE-R, UD pullies are a god-send (Alanis-send?).

Frees up ~5whp.

Prevents water pump cavitation at high RPMs.

 

i liked them - i used a crank and alternator pulley and thought the engine spun up quicker. It was worth 4.5hp on the dyno (whp) for me.

 

edit-whoops


[Modified by paste, 11:02 PM 12/9/2002]

 

and you think 5hp is worth how much time on, say, a 60 second course??

 

entirely useless unless you are fast and consistent enough to make use of it... i was at a point once where upgrading the car was more important than learning how to drive faster.

RJ

 

i think that could be said for most modifications. ah, for the days when the driver was better then the car.......maybe those days will return soon, though i'm not sure if i should hope for that, since i'm kinda out of money.

nate-who is going to spend his $300 on something race kaa oriented, just not sure where

 

evolution school

 

spend the money elsewhere. that's almost 2 race tires you can buy for $350

 

actually, it's a full set. unless i go and switch to bfg's, then it's almost 2 tires. hmmmm......

the other thing i'm looking at is improving the brakes. i'm on all stock components right now and pondering ss lines and carbotech pads. do you guys think improved braking will find more time then the u/p will?

nate

 

Yes.

 

definetly....when i switched to hawk HP+'s it transformed my car....i can actually lock up a wheel now...not that that is a desired effect....but you get the idear...

 

id spend $350 for 4-5 hp in a class like ITA if i was in contention for winning....

but im not sure why youd have to pay so much, just shave off the ac pulley part and balance and put a larger aluminum alternator pulley.

 

I just made myself an aluminum alternator pulley in machine shop. That's the way to go.
But seriously, solo-x, if you're in stock class now (?), it's not worth reclassing just to run some pulleys. I'd save the money for when something more important comes along (like repairs) (or tires).
-Dan

 

i broke 2 oil pump (OEM NEW) in 2 Weeks (result= 2 death bering) ... with UR crank pulley

because they don't have damper....so when you shift you have nothing to absorbe the shock of the belt on the crank/oil pump.. and the oil pump broke

my choice are CTR crank puley N1 Oem..

 

No, not worth it. I only got about 2 HP to the wheels with the Unorthodox Ultra SS. Then couple that with the possibility of extra wear and tear on the engine which equals a couple thousand bucks...I took them off. Wasn't worth it.

 

it's already an sts car, so the pulley won't change my class. i was already leaning away from the pulley, this just reinforces that. looks like some brake upgrades and maybe an evolution school are in the future.

nate

 

yes...evolution school good....must resist .....making more....changes....to car....must just.....drive it......

 

You ever felt the heft of the D series crank pulley? They are heavy *****.

You'll definitely see a few more than 1-2 HP if you install them. Plus, you can buy the one that just runs the alt. if you do not have power steering and a/c.

nate--I might have a D series crank pulley for sale if you are interested. IM me or something.