Look what I got today... :-) (Under drive pulley!!)

[Todd Z]

yup,

Got my under drive pulley today!!!!! Looks really good....



It ran $298 with shipping

Thats about $20.00 bucks a HP

Here are some quick observations

Specs

It is about 1lb heaver

Stock = 6"

UDP = 4.5"

So it works out to be a 25% Under drive :unsure: Not to shabby...

They say 16 RWHP, we will see hopefully soon !!!!!!!! :wacko:

Todd Z

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[Wayne Foy]

Which will hopefully be available through Hypnotic Illusions when the vendor calls me back!!!

 

[Jeff C]

Hmmm, will you have a test unit when you have the dyno day, Wayne? Then let the test-ee (that came out wrong) keep the test unit?

 

[Ben Poche]

if it works out i know i want one

 

[Tom Schindler]

Same here.



Wayne, see what kind of price you can get me on Ground Control Coil-overs. (not for the Trac)





Tom

 

[Tim Reynolds]

Good luck with that! Definately keep us posted on the results.



How will that affect the driven components? I thought the PS and alternator were already weak.

 

[scott farmer]

What brand and where did you get it

 

[EddieS'04]

I would not like the fact of it being 11lbs hevier....lot of extra wieght on the front main...I would hope someone would make it out of alum. billet....

 

[Tim Reynolds]

1lb heavier Eddie

 

[Ben Poche]

fast eddie it is 1 pound not 11

 

[Todd Z]

Yes, it is only 1 (ONE) pound heaver, But since it is smaller in dia. The larger mass in a smaller area, will tend not to vibrate as much as the stock pulley would.

Todd Z

 

[EddieS'04]

Ok....my boo boo, read to fast, I can live with, one pound.....:lol:

 

[Tim Reynolds]

Todd, still curious how that works. You will be working the engine less (giving you more HP) by not rotating the driven equipment as fast right? Will the A/C still be as strong, will the PS start to give you problems.....etc?



Tim

 

[Todd Z]

Tim,

Exactly, All the components spin at different rates due to the size of their pulleys.

Placing a smaller crank pulley slows them down, In this case about 20%....

My truck idles about 800 rpms, so at idle the components will slow down as if i was idling at about 600... This is still a safe range.. As for any one with a stereo, or large electrical draw, they may notice issues at idle.....

I also have a huge problem with the dam belt floating off the p/s pulley about 5K rpms.

This will slow the accessory speed down enough that that will not happen any more..

IT sucks when you loose complete steering and it locks up at high rpms..

Todd Z

 

[Tim Reynolds]

Especially when you are going mach 2 (5K rpm) :lol:

Good luck with that and let us know how it works out.

Tim

 

[Brian Curry]

do you need to use a shorter belt? sound like good bang for your bukbuk

 

[Tom Schindler]

I will be getting one come springtime.





Tom

 

[nick weaver]

hey todd,

who'd you say makes that again?

 

[Tom Higbee]

Todd,, Do you think you'll have any problems with the AC Compressor cycling on and off because of the lower RPMs?? Seems some of us, me included, had a problem like that and had to do an idle speed adjustment to stop the cycling on and off....seems Ford compressors need a certain RPM to run steady.

 

[Brian Curry]

site with a test on a mutang

http://www.marchperf.com/superford1.html