I've got a few bucks for more mods, and I'm thinking of adding a pulley. My engine is stock (heads, cam, crank etc). Is it worth doing at this point, or should I wait until moving to a serious power adder (FI, h/c)?

Thanks.

 

This is asked at least once a week. It's a mod. It's a fairly simple and cheap mod. It's worth doing at anytime. You will not set records doing it but it is just one more mod.

 

8rwhp is what we've seen time & time again. I like the mod, it's easy to do & makes good hp for the $$$.

 

I got one because I kept killing alternators shifting at 6800 rpms all the time. Been on the same one for quite a while now with the UD pulley.

 

What about if you're running some type of sound system? I've heard to steer clear of a UD if you're running one... is this true?

 

Being that you're an A4 you may want to steer clear if you have a big system. I have an M6 and don't have issues.

 

I wouldn't do the pulley until you do your cam. It's a small gain and a bit of a pain in the behind. Wait until the pulley has to come off anyway to upgrade it.

 

gotta agree. good bang for the buck mod.

 

just put one in and I'm happy! makes the engine rev faster and supposibly good for .1 off the 1/4 mile.

 

I have a 1600D Hifonics I run with mine. Without the overdrive alternator I was draining the battery. Since I added it no problems but when either my battery or alternator goes I will upgrade them too since I get flicker at night on big bass hits.

 

I am only running one kicker ZX750 on my UD and didn't change charging one bit, even when it's cranking and the bass hits. No flickers or anything.

 

Which UD pulley is the most popular? Did anyone else notice the motor reving quicker?

 

I don't have a HUGE system but I like my **** LOUD! So I might have to research a UD pulley.

 

So this is a good mod 2 do? Worth it? and I have a A4 2000 Z28 w/LT's and several other bolt ons. Would this be a good mod to do? I do not have any CRAZY stereo set up.

 

yesterday i got a good deal from a sponser on here. powerbond 25% pulley, both belts, and new bolt for $220 shipped. i think its a good deal. cant wait to put it on.

 

I have line-sag problems with totally stock pulleys
and alternator, on hot days with the A/C on. If
you are in the southland, you may well too unless
you compensate by overspinning the alternator.
It's a shaft RPM, field current limit bind.

 

does a 25% UD pulley reduce engine longevity at all? any other parts it puts additional strain on?

 

^^ seems posible

 

I have had mine for alittle over two years now with no issue. I did notice a quicker rev..... sometimes my volt gage drops below 12V but never had battery problems. no after market stereo system here but , I do crank my system at gtg's.....do it!!!!!!