Lightened Ralco RZ Pulley. Thoughts...
#1
Lightened Ralco RZ Pulley. Thoughts...
...nothing like waiting til after I purchase it to ask questions.
Anyhow, I bought a Ralco RZ lightened Aluminum pulley (stock diameter) for $40 shipped.
Should be here in a few days. What is the experience of these pulleys on the forum. I haven't seen much in the 5.5 gen about them, but read up on other forums about them and they seem to work as they should.
They normally cost around $150-$170 shipped.
For the price I could not pass it up based on what I have heard about paying top dollar for the UDP, etc. and getting minimal performance gains per dollar.
Anyhow, I bought a Ralco RZ lightened Aluminum pulley (stock diameter) for $40 shipped.
Should be here in a few days. What is the experience of these pulleys on the forum. I haven't seen much in the 5.5 gen about them, but read up on other forums about them and they seem to work as they should.
They normally cost around $150-$170 shipped.
For the price I could not pass it up based on what I have heard about paying top dollar for the UDP, etc. and getting minimal performance gains per dollar.
#2
For the very minimal changes introduced by replacing your crank pulley, your $40 is about what it's worth, IMO. Currently, UR is asking $250+ for their OEM-diameter lightweight pulley... $50 more than I paid for mine a year ago. Even so and with hindsight, I would have spent the money elsewhere.
So $40 sounds exactly right; a good deal, even. And a good opportunity to change your belts.
So $40 sounds exactly right; a good deal, even. And a good opportunity to change your belts.
#5
#6
UR's stock diameter pulley is 1.58 pounds, compared to the OEM pulley at 7.18 pounds. (Canadians, do your own math.)
I'll tell you this much, when you have one in each hand, you'll have one of those OMG moments. And that's pretty cool.
I'll tell you this much, when you have one in each hand, you'll have one of those OMG moments. And that's pretty cool.
#9
It is a brand new "open-box" item that I bought from these guys http://www.ultrarev.com/ through eBay "Make an Offer" option.
#10
http://cgi.ebay.com/ebaymotors/ws/eB...category=38656
yea i also just bought one. Only I paid 60$ for it, i wonder ezactly what is the lowest they will let these go for? But im going to install it tomorrow.
In the directions it recommends that you use:
Alternator and A/C belt- Gates KO60408 (41.5" or 1055MM)
Power steering Belt- Gates K040300 (30.75" or 780MM)
My thing is i recently replaced my belts with New ones from Nissan, Does anyone know the if i would need to replace them again for this pulley?
yea i also just bought one. Only I paid 60$ for it, i wonder ezactly what is the lowest they will let these go for? But im going to install it tomorrow.
In the directions it recommends that you use:
Alternator and A/C belt- Gates KO60408 (41.5" or 1055MM)
Power steering Belt- Gates K040300 (30.75" or 780MM)
My thing is i recently replaced my belts with New ones from Nissan, Does anyone know the if i would need to replace them again for this pulley?
#11
If it's OEM diameter, then no. That's one of the benefits of going OEM diameter, buying belts that are spec'd for the car.
Last edited by Rochester; 02-16-2010 at 02:35 PM.
#14
#15
These are the reasons why lightweight flywheels, driveshafts and wheels/tires are desirable.
EDIT: My anecdotal experience with another vehicle and an under-drive UR pulley set was a noticeable increase in accelerative power at the expense of reduced alternator and A/C efficacy.
Last edited by 2slow; 02-17-2010 at 09:07 AM.
#17
#18
The opinions mainly question the value or utility this modification represents, which will vary greatly between individuals and cannot allows be simply compared as $/hp. A comparison which is a bit contrived with pulleys since they doesn't 'make' power, and the test methods are not rigorous enough to compare small differences between products. Though, the test methods will show a difference with and without a pulley (especially an under-drive model).
Products which make small differences will always be questioned regardless of actual performance as they lack a strong sensations (acceleration/power in this case). Can you notice the difference in WOT acceleration with and without the A/C on?
The key to making lots of power (or just about anything) is usually a few large improvements combined with many smaller improvements, for which value decreases.
I apologize in advance if this sounds preachy.
Last edited by 2slow; 02-17-2010 at 11:37 AM.
#19
2slow, we're on the same page. I think you know that already. Semantics are a poor basis for debate.
Yes. Couldn't have said it better myself.
No, man. I love reading your stuff. (p.s. you apologize in retrospect )
No, man. I love reading your stuff. (p.s. you apologize in retrospect )
#20
I prefer to apologize in advance when I know my comments will elicit a response. e.g. "please excuse me for being rude, but you're an a55hole."
#27
same could probebly be said for the 3" exhaust, more beneficial to FI cars, does means not worth it (not sayin you was saying that) but there is a lot of things that we add on our NA cars thats probebly more efficient on a FI application so that statement is a tad irrelivant
#28
#30
The basis for my statements is the relationship between energy, inertia and rotational speed:
#31
i'm not arguing that. I noticed a difference with my pulley and I am happy with it. But I'm sure Unorthodox advertised I would get 5-8 Horsepower gain which I don't think is correct. But IF I was boosted I may have noticed an 8 HP gain with the pulley.
#32
I guess I can agree with that
#33
I would think 8 additional 'wheel' horsepower on a 200 whp (near stock engine) vehicle is more noticeable than on a 350+ whp (turbocharged) vehicle. In other terms, it is a 4% increase versus a 2.3% increase, respectively.
#35
Right time at the right place
#37
WOW what a difference! My car pulls wayy harder in mid range. Can't tell the difference off the line just yet because its been wet out. I also used the stock PS belt despite it saying I needed a longer one in the directions. I didn't have to adjust the pump at all with the stock belt. My flywheel bolt was a ***** to get out. PB blaster and a breakerbar with a pipe on it was needed to get the thing out. Tightest bolt ive ever seen in all my years of working on cars.
#38
WOW what a difference! My car pulls wayy harder in mid range. Can't tell the difference off the line just yet because its been wet out. I also used the stock PS belt despite it saying I needed a longer one in the directions. I didn't have to adjust the pump at all with the stock belt. My flywheel bolt was a ***** to get out. PB blaster and a breakerbar with a pipe on it was needed to get the thing out. Tightest bolt ive ever seen in all my years of working on cars.
#40
I'm not sure about Maximas because I'm new here but I've had friends put lightweight OEM sized pullies on there various vehicles and have been slightly impressed, it just free's up a slight ammount of HP already being produced, so for 40 bux that sounds awesome