i came across a couple and with a big price difference between the. anyone have any of these? or know how much of a difference it is really?


Ralco RZ Underdrive Pulley Altima Maxima Murano I35 3.5

http://cgi.ebay.com/ebaymotors/Ralco...Q5fAccessories



Unorthodox Racing Crank Pulley 01-06 Maxima Altima I35

http://cgi.ebay.com/ebaymotors/Unort...Q5fAccessories



OBX UD Crank Pulley 02-06 MAXIMA 3.5L VQ35 POLISH

http://cgi.ebay.com/ebaymotors/OBX-U...Q5fAccessories

 

UR is a name brand, hence the price.
OBX is known for making cheap stuff.
nevern heard of "ralco," and their web site should give a hint on how big they are
( http://ralcorz.com/ )

a udp will definitely free up power, because the accessories are spinning slower.
stuff such as AC compressor and alternator may take a hit in performance and/or life.

I don't see why the OBX wouldn't do the job, though. you'll want to find out what new belt(s) to get with it.

 

Not worth it IMHO unless you're trying to squeeze every little hp out of the motor. If you do get one though, go with the UR lightened pulley that way your accessories won't take a hit.

 

yea idk abt the belt issue. and i have a feeling there might be some imperfections in the cheap ones. which will probably screw something up

 

i have a question about the UR pulley. i have someone thats ready to sell me one and im ready to buy (friday). they had it on their 3.5, but i have the DE-K...dont i need the timing ring for it to work on mine?

 

im not sure what youre referring to. but all i remember on mine when i pulled it off was a tooth that basically made it fit in only one way. i have the 3.5 motor. im not sure what the de-k has but i know they sell those years separately. i dont know why that is. so the only thing im guessing is that they might have a different end or something...which is probably what youre talking about...
so yea i didnt really help out with this much. but id like to figure out why myself right now

 

We have never seen much difference on the dyno with pulleys on the 3.5 engines, except for belt squealing on cold mornings.
Not worth it IMO.

 

 

i bought a used one for my 91se since
i was gonna get all 3 new belts for like 50,
but instead got a UR underdrive pulley with almost new belts for 100,
....sigh, i miss having extra money for stuff

not belt squeal for the first year or so then a little squeal when the belts
streched with age ,so i tightened them just a little

i did think i noticed some performance from it
hard to say though,possibly similar to lighten flywheel effects?

 

no don't buy these they ruins your crank bearings in the long run.
only good for racing engine who gets rebuild often