MustangWorks.com - The Ford Mustang Power Source!

Go Back   MustangWorks.com : Ford Forums > Website Community > Stang Stories
Register FAQ Members List Calendar Mark Forums Read

Notices


Reply
 
Thread Tools Rate Thread Display Modes
Old 10-29-2002, 11:41 PM   #1
SMoKEDya95Stang
Registered Member
 
Join Date: Oct 2002
Posts: 15
Default Underdrive pulleys for street racing

Hey,

I am selling a set of Underdrive Pulleys.
I really need the money, my car got into accident.
They are BRAND NEW/NEVER BEEN USED.
Hypertech Power pulleys
Includes Crank Pulley, and Alternator Pulley
about a 5-10 HP boost! A big boost in torque also.
No need to buy a belt, hypertech pulleys use stock belt!
please check it out,
Fits only 1994-98 Mustangs v6!! 3.8L

http://cgi.ebay.com/ebaymotors/ws/eB...871538203&rd=1

Thank you!
SMoKEDya95Stang is offline   Reply With Quote
Old 10-31-2002, 06:23 PM   #2
Skyman
I need 110mph Trap Speed!
 
Skyman's Avatar
 
Join Date: Feb 1999
Location: So, CA
Posts: 4,315
Default

Will mah 3.8L stang haulz *** with thoze pullies man?
__________________
2001 BMW M3 6spd
12.79@108

RIP
----
1993 Notch w/ 98 4V 4.6 Fasttt...

-1989 Saleen Mustang #406-
12.32@109

-1999 Black Cobra Coupe-
JBA Shorties, Bassani Cat-X, Magnaflow 3", Pulleys, 85mm Pro-M, Ported Intake, Soild Rear w/ 4.30s, Tubular Front End, X2C arms, 13lb batt, few others.
Skyman is offline   Reply With Quote
Old 10-31-2002, 09:04 PM   #3
SMoKEDya95Stang
Registered Member
 
Join Date: Oct 2002
Posts: 15
Default

you will def. Notice a boost in your acceleration and torque. Like i said it gives you 5-10 horses. some other time down the line you can buy a asp water pump pulley (you can get them for like 20 bucks shipping usually..) and get a better boost, but only by 2 horses.. But its better than nothing. Now its gonna take alot of parts and money to get ur stang really fast but if ur 3.8 is stock then u will notice the power that a underdrive pulley gives u
SMoKEDya95Stang is offline   Reply With Quote
Old 10-31-2002, 10:29 PM   #4
MidNiteBlu 5.0
I got something to say
 
MidNiteBlu 5.0's Avatar
 
Join Date: Sep 2001
Location: San Diego, CA
Posts: 1,557
Default

Quote:
Originally posted by Skyman
Will mah 3.8L stang haulz *** with thoze pullies man?
LMAO!!!

So if they are street racing, I cant use them at the track?
__________________
91 LX Hatch 5.0 - made for the twisties
89 LX Hatchback 5.0 5spd. stolen/stripped 4/7/05
http://www.mustangworks.com/cgi-bin/...splay.cgi?3494
1987 Toyota Pickup
Ricer Haters Club Member #33

Want a custom gauge cluster for your Vintage Mustang?
www.jmeenterprises.com
MidNiteBlu 5.0 is offline   Reply With Quote
Old 10-31-2002, 10:36 PM   #5
ItzDaLexus300
Registered Member
 
Join Date: Oct 2002
Location: Nebraska
Posts: 55
Default

One thing to know about underdrive pulleys. Underdrive crank pulleys do not have harmonic dampners, which is what you replace when you put it on. there relaly isnt any danger but its something worth knowing.
__________________
Proveyer of everything Different.

1996 SC300 5spd ~"Some Mods" **cough**

1987 Pontiac Fiero Project. Ask for Details
ItzDaLexus300 is offline   Reply With Quote
Old 10-31-2002, 11:04 PM   #6
SMoKEDya95Stang
Registered Member
 
Join Date: Oct 2002
Posts: 15
Default

They are for street racing, track use, anything. They are simple underdrive pulleys.
They Merly give your car more HP and torque and it is very noticable, from driving a stock car and adding pulleys. They increase ur accelartion. Its not a miricle thing or anyhting to get ur car to haul ***, you really need to invest a **** load of money, porting and polishing intakes, forced intake, cai, exhaust. But if u want your car to haul is..... everyone starts with new pulleys. Its an essential.


[QUOTE]
One thing to know about underdrive pulleys. Underdrive crank pulleys do not have harmonic dampners, which is what you replace when you put it on. there relaly isnt any danger but its something worth knowing.

about what you said.

That isnt true. THese pulleys are for a 94-98 mustang. THey do not change the harmoic dampner. That is for the 99+ boyz.
But even if you do there isnt any harm there.
Infact installation with the harmonic damper really isnt difficult.
But installation on these years is easier.

Got a question about anything, installation the pulleys whatever
go head and email me. If ur interested on these pulleys go a head and bid, or email me.
thanks.


Hellbentmatrix@juno.com
or the aution.

http://cgi.ebay.com/ebaymotors/ws/eB...ADME:B:LC:MT:1
SMoKEDya95Stang is offline   Reply With Quote
Old 10-31-2002, 11:26 PM   #7
typeR
Registered Member
 
Join Date: Nov 2001
Posts: 111
Default

TVD...HB it's still alittle mix of vodoo to me...do todays modern engines need this 8+lb of rotational mass to slow the spooling of the engine or is a tortional vibration damper an essential process required to keep resonance from tearing the bearings apart in the bottom end? let;s ask mr owl
or harmonic balancer ,is it just to reduce engine noise from making its way into the cabin...the world may never know
__________________
'01 acura CL-S 260/232 (stock)
2500$ 3.5L short block
299$ cai 10 whp
299$ lowered 1.0/1.25
999$ headers 30 whp

look on there face...pricless
PB 1/4 13.794@101.54
typeR is offline   Reply With Quote
Old 11-01-2002, 12:15 AM   #8
SMoKEDya95Stang
Registered Member
 
Join Date: Oct 2002
Posts: 15
Default

Harmonic dampers (aka harmonic balancers) are found on all Ford 90 degree V6 and V8 engines, so far as I know. They consist of a two cast iron discs with some kind of elastomer sandwiched between them, and they are mounted on the front end of the crankshaft to dampen or balance out crankshaft vibrations that occur at certain frequencies and rpm's. It suttles out the sound and the cars sound and vibrations inside of the car.

All of our 3.8L V6 engines have a harmonic balancer. On the 94-98 engines, the crank pulley bolts to the front of the harmonic balancer. On 99+ cars, Ford made the harmonic balancer and crank pulley one piece.

So. if you put an underdrive pully on a 94-98 car, all you have to do is remove the old crank pulleyand bolt on a new one. To put an underdrive pulleyon a 99+ car, you have to replace both the harmonic balancer and the crank pulley.

UD pulleys reduce the speed of accessories relative to the crankshaft speed. Therefore increasing horsepower, torque and gas mileage, and by turning the accessories slower, extend their life. Some people say that using UD pulleys isnt good for your car cause it takes some power away from your accesories.
Well The amount of power that it absourbes from your accesories really isnt that much. It wont harm your accesories in anyway.
It prolongs the life of them, ask people who have ud pulleys in there car they will tell you the dont see any difference in the way their ac works, heat, power steering, ect.


hope this helps
SMoKEDya95Stang is offline   Reply With Quote
Old 11-01-2002, 12:24 AM   #9
typeR
Registered Member
 
Join Date: Nov 2001
Posts: 111
Default

the gains in an undrive pulley set has very little to do with undriving the accessories and almost all to do with the dramatic weight difference... my crank pulley was 8lbs heavier than the light weight aluminum one i bought and am choosing not to install eventhough it has been dyno proven to provide 10/10 in my car and probablly much much more below where a dyno jet can measure....the concerne is the resonance effet on the crank it self ...skyscrappers use HB/TVD's to diminish harmonics that could literally rip a building to shreds in its absense...if steve saleen came on told me why the absence of the hb/tvd isnt a problem and only really effect cabin noise id be all over it but as it stands the best testiment agaisnt it comes to me from a company called AEM they have this civic draggster running low 8's and it has the o.e. crank pulley...also they make pulleys but not crank pulleys just accessory pulleys
__________________
'01 acura CL-S 260/232 (stock)
2500$ 3.5L short block
299$ cai 10 whp
299$ lowered 1.0/1.25
999$ headers 30 whp

look on there face...pricless
PB 1/4 13.794@101.54
typeR is offline   Reply With Quote
Old 11-01-2002, 12:50 AM   #10
The Deuce
Registered Member
 
The Deuce's Avatar
 
Join Date: Apr 2002
Location: Atlanta, GA
Posts: 2,325
Default

Quote:
Originally posted by Skyman
Will mah 3.8L stang haulz *** with thoze pullies man?
Sky, you are one mean dude. That went waaaaaay over his head.
__________________
1997 Mustang GT "The Freak" - 13.80 @ 101.70, 2.07 60'
1995 Honda VFR750 - not much @ really fast (actual data pending.)
1964.5 Mustang 289

Rice Haters Club Member #13
The Deuce is offline   Reply With Quote
Old 11-01-2002, 01:26 PM   #11
SMoKEDya95Stang
Registered Member
 
Join Date: Oct 2002
Posts: 15
Default

Actually Underdriving the accesories has everythign to do with "underdrive" pulleys....
Its the whole point of it. Yes less weight is a good quality. But think of it this way.
A smaller pulley will take Less revolutions, to crank the crankshaft
THAN a Larger pulley.

Also by that it underdrives other accesories. It "robs"
needed power from accesories that able to speed of the pulley to be faster.
Removing a HB is a bad thing
if you do that your crankshaft life will be diminished they are there for a reason....
SMoKEDya95Stang is offline   Reply With Quote
Old 11-01-2002, 02:17 PM   #12
typeR
Registered Member
 
Join Date: Nov 2001
Posts: 111
Default

about 2% of the gains from the typical UD pulleys are derived from underdriving the accessories the rest come the dramtic decrease in rotational mass...like a light weight fly wheel or light weight wheels...
__________________
'01 acura CL-S 260/232 (stock)
2500$ 3.5L short block
299$ cai 10 whp
299$ lowered 1.0/1.25
999$ headers 30 whp

look on there face...pricless
PB 1/4 13.794@101.54
typeR is offline   Reply With Quote
Old 11-05-2002, 02:35 AM   #13
89mustanglx
Registered Member
 
89mustanglx's Avatar
 
Join Date: Dec 2000
Location: Rockmart GA usa
Posts: 24
Default

Will these underdrive my blinkers as well? I'd buy them right now if they came with new muffler berings.

Smiff
__________________
89 mustang lx
350 4 bolt main
balanced neutral (barnette perf)
Edelbrock Performer rpm heads
Weiand 6-71 blower
Super powershot nitrous plate kit
(lots of other odds n ends)

442 rwhp (no NAWWZZZ)
512 rwtq (no NAWWWWWZZZZZ))
89mustanglx is offline   Reply With Quote
Old 11-05-2002, 10:54 AM   #14
SMoKEDya95Stang
Registered Member
 
Join Date: Oct 2002
Posts: 15
Default

...no they dont effect that..
SMoKEDya95Stang is offline   Reply With Quote
Reply


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Underdrive pulleys 68Falcon Windsor Power 4 02-22-2004 04:01 PM
underdrive pulleys SMoKEDya95Stang Small Ponies 0 10-29-2002 11:39 PM
NEW 2000 V6 Underdrive Pulleys? Jester4kicks Small Ponies 6 04-25-2002 12:08 AM
Supercharging...remove underdrive pulleys?? quick89gt Windsor Power 4 04-03-2001 10:15 PM
ASP underdrive pulley's Shotgun28 Windsor Power 2 01-15-2001 12:55 AM


All times are GMT -5. The time now is 03:41 PM.


SEARCH