Underdrive Pulley Problem

ace1_15 · 09-19-2006, 08:34 PM

I bought these underdrive pulleys and installed them. I took my car to a mechanic to dyno tune my car. He told me that my underdrive pulleys did not have a harmonic balancer and could cause damage to my engine over time. He told me to use Steeda pulleys because they came with a harmonic balancer. I saw the steeda pulleys and they look the same as my i believe bbk pulleys should i change them before i cause DAMAGE TO MY CAR!!!!

Saleen S330 · 09-20-2006, 03:43 AM

He's probably only seen normal dampners/harmonic balancer or something. The underdrive pulley for it doesn't look to much like one but it is. Also if it looks like the steeda one then it's right. i wouldn't worry about it, he doesn't know what he's looking at.

NorthCanMan · 09-29-2006, 05:15 PM

I have the same problem as well, in the instructions for the BBK pullies it says to mount the factory dampener to the BBK pulley but the factory pulley is one piece and doesn't come apart, so now I am not sure what to do. Any suggestions? Is there a dampener that I can get to mount to the aluminum pulley?

liv4him · 09-30-2006, 06:52 AM

The steeda pulley have the harmonic balancer built right into the pulley. I thought the bbk's were a piggy back system.

cobra1923 · 09-30-2006, 07:46 AM

With the piggyback pulleys you mount the stock dampner and pulley (yes they are all one piece) to the new crank pulley. You end up with the new pulley next to the block with the belt running on it and the dampner/stock pulley bolted to it and sticking out further than it originally did (with no belt on it obviously). It looks dumb and that's why they're cheaper and most folks don't go with the piggybacks if they don't have to. You have to really clean up the stock piece when you sandwich them together and torque the bolts down evenly or you'll throw a low rpm misfire code.

NorthCanMan · 09-30-2006, 12:47 PM

Crappy! I wanted the Aluminum ones to dress up the engine and I think that will make it look crappy. I should have done more reserch into in it before forkin out the cash. I don't think that I'll put them on now and I'll have to see if I can sell them or trade them for something. Thanks for the clarification guys.

Dave

09-19-2006, 08:34 PM	#1 (permalink)
ace1_15 Junior Member Join Date: May 2006 Posts: 9	Underdrive Pulley Problem I bought these underdrive pulleys and installed them. I took my car to a mechanic to dyno tune my car. He told me that my underdrive pulleys did not have a harmonic balancer and could cause damage to my engine over time. He told me to use Steeda pulleys because they came with a harmonic balancer. I saw the steeda pulleys and they look the same as my i believe bbk pulleys should i change them before i cause DAMAGE TO MY CAR!!!!

09-30-2006, 06:52 AM	#4 (permalink)
liv4him 40thGT Join Date: Mar 2005 Location: York, Pa Posts: 176	The steeda pulley have the harmonic balancer built right into the pulley. I thought the bbk's were a piggy back system. __________________ 40thGT,Mach1chin,shorty ant.,K&N, Magnapacks catback, bullet knob, Steeda U/D pulleys,H&R SS springs,4.10's,grill delete,SCT, DD 17x10.5 315 NittoDR's,17x9reps.SLP X pipe,poly isos. rear seat delete,Alum.drivshaft, MMcc plates,35% tint, dyno tuned

09-30-2006, 07:46 AM	#5 (permalink)
cobra1923 Senior Member Join Date: Nov 2004 Location: Baltimore Posts: 575	With the piggyback pulleys you mount the stock dampner and pulley (yes they are all one piece) to the new crank pulley. You end up with the new pulley next to the block with the belt running on it and the dampner/stock pulley bolted to it and sticking out further than it originally did (with no belt on it obviously). It looks dumb and that's why they're cheaper and most folks don't go with the piggybacks if they don't have to. You have to really clean up the stock piece when you sandwich them together and torque the bolts down evenly or you'll throw a low rpm misfire code. __________________ 2003 10th Anniversary Cobra Convertible All Stock and staying that way... well maybe some pipes since it's so quiet..ahhhh! it's a sickness 1995 mustang GT vert - all black (almost back together)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
I ordered Gears	Pilks	General Tech Forum	1	03-30-2006 02:11 PM
Reverse Shocker.	95STANG	The Lounge	10	03-01-2006 01:40 PM
4.10 Chosen....	PureStang	Modular 4.6L Tech	1	07-30-2005 05:07 PM
180* Thermostat???	jjtgiants	The Lounge	22	06-23-2005 02:17 PM
Funny comic strip and ricer pic	ThePunisher	Pictures	1	04-13-2005 11:35 PM

09-20-2006, 03:43 AM	#2 (permalink)
Saleen S330 Banned Join Date: Jan 2006 Location: Sumter, SC Posts: 900	He's probably only seen normal dampners/harmonic balancer or something. The underdrive pulley for it doesn't look to much like one but it is. Also if it looks like the steeda one then it's right. i wouldn't worry about it, he doesn't know what he's looking at.

09-29-2006, 05:15 PM	#3 (permalink)
NorthCanMan Junior Member Join Date: Jul 2006 Posts: 3	I have the same problem as well, in the instructions for the BBK pullies it says to mount the factory dampener to the BBK pulley but the factory pulley is one piece and doesn't come apart, so now I am not sure what to do. Any suggestions? Is there a dampener that I can get to mount to the aluminum pulley?

09-30-2006, 12:47 PM	#6 (permalink)
NorthCanMan Junior Member Join Date: Jul 2006 Posts: 3	Crappy! I wanted the Aluminum ones to dress up the engine and I think that will make it look crappy. I should have done more reserch into in it before forkin out the cash. I don't think that I'll put them on now and I'll have to see if I can sell them or trade them for something. Thanks for the clarification guys. Dave