i just got a unorthodox crank pulley, and i was wondering if i should have it put on? i am just concerned now that i've heard a few people saying that it might ruin the engine. is this true. should i sell it, or not even put it on? please help me.
<P ID="edit"><FONT class="small"><EM>Edited by wreck on 08/21/03 08:36 AM.</EM></FONT></P>
<P ID="edit"><FONT class="small"><EM>Edited by wreck on 08/21/03 08:36 AM.</EM></FONT></P>
you wouldn't sell it, or you wouldn't put it on?
I don't know.. I want to say put it on but some people say it's bad for your engine. I don't see how it can be bad. We will know soon!
Thanks - Joey Avino
Thanks - Joey Avino
Registered User
I would NEVER put it on.
The factory pulley is multi-piece rubber dampened pulley; this allows it to absorb the crank vibrations at high RPMs (5000+). The UA one is a single piece, which does not do any of it. Too much trouble and loss of peace of mind for 5 horsies.
Gurgen
2003.0 G35 5AT Sedan
Sport/Winter/Aero
<font color=red>Injen CAI</font color=red>
Eibach Pro Kit
Clear side markers
UR Racing Pulleys - set of 3
Cusco Strut Tower Bar (soon)
Cusco Sway Bars (soon)
The factory pulley is multi-piece rubber dampened pulley; this allows it to absorb the crank vibrations at high RPMs (5000+). The UA one is a single piece, which does not do any of it. Too much trouble and loss of peace of mind for 5 horsies.
Gurgen
2003.0 G35 5AT Sedan
Sport/Winter/Aero
<font color=red>Injen CAI</font color=red>
Eibach Pro Kit
Clear side markers
UR Racing Pulleys - set of 3
Cusco Strut Tower Bar (soon)
Cusco Sway Bars (soon)
So it won't hurt your car just your "peace of mind?"
Thanks - Joey Avino
Thanks - Joey Avino
Re: SHOULD I PUT ON MY CRANK PULLEY?
If you're willing to put that thing on for 5hp and risk a crankshaft failure then go for it. But in our opinion risking thousands of dollars in engine work is not worth the 5hp that you wont even be able to feel in the seat of your pants.
I just found this link. Check it out...
http://www.dinanbmw.com/html/danger_...er_pulleys.htm
Someone will likely come out with just underdrive pulleys. They're just larger diameter aluminum accessory pulleys that get driven off of the OEM crank pulley. It's worth the wait.
G35s 6MT Garnet Fire, Premium, Aero, Aero Body Kit, Winter Sport<P ID="edit"><FONT class="small"><EM>Edited by gsedanman on 08/22/03 06:19 PM.</EM></FONT></P>
I just found this link. Check it out...
http://www.dinanbmw.com/html/danger_...er_pulleys.htm
Someone will likely come out with just underdrive pulleys. They're just larger diameter aluminum accessory pulleys that get driven off of the OEM crank pulley. It's worth the wait.
G35s 6MT Garnet Fire, Premium, Aero, Aero Body Kit, Winter Sport<P ID="edit"><FONT class="small"><EM>Edited by gsedanman on 08/22/03 06:19 PM.</EM></FONT></P>
Registered User
PUT THEM ON! They are bad @ss! I defintely noticed an increase in power when I put my 3 peice set on. I had to becareful on the way home because I would reach redline a lot quicker then usual. Trust me, it works great and you won't have any problems.
Edretti
2003 Infiniti G35 Coupe 6mt Loaded Brillant Silver
http://www.cardomain.com/id/edretti
Edretti
2003 Infiniti G35 Coupe 6mt Loaded Brillant Silver
http://www.cardomain.com/id/edretti
Registered User
Personally, I don't know you, so I think I'd rather trust the mechanical engineer at Dinan.
2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter
2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter
Registered User
Dinan is BMW's, Thats a completely different car. This whole issue is driving me f-ing crazy. I have the pulley in my hand and am waiting to hear if it is ok before I install it...........
Luv My G
Luv My G
Registered User
Yes, Dinan is BMW, but an internal combustion engine is an internal combustion engine, and a harmonic balancer is a harmonic balancer, etc. The physics principles involved in making performance mods to the engine are the same from Aston Marton to Yugo. The reasons that Dinan paper cites underdrive pulleys as being damaging to an engine are valid for any internal combustion engine, not just a BMW. After reading that, I'd say return the part for a refund and spend your money on something else.
2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter
2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter
Registered User
The VQ35 is internally balanced, I have had a VQ engine and I still have a crank pulley sitting on my shelf. There are no balancing marks or anything else on the pulley other than the belt guides.
The pulley does not have any rubber nothing on it. it is NOT a harmonic balancer.
If you don't trust me, cool, it is your engine. sell me your pulley for 100.00 shipped.
I ran a UR UDP on my 3.5 altima for a year and a half, engine ran smoother and revved easier
Better Life thru Chemistry
The pulley does not have any rubber nothing on it. it is NOT a harmonic balancer.
If you don't trust me, cool, it is your engine. sell me your pulley for 100.00 shipped.
I ran a UR UDP on my 3.5 altima for a year and a half, engine ran smoother and revved easier
Better Life thru Chemistry