Lightweight crank pulley

[e240]

Throw it like a frisbee...if it hits the target you were aiming it, its balanced, if it doesn't, you need to work on your throw...

[trism]

I have read your posts, just would have assumed the balancing would have be super precise. Like .01 of a gram or whatever

HE ISN'T BEING SERIOUS FOR FUUCKS SAKE.

Sent from my custard cannon like Peter North.

[EG5]

Run EK9 N1 spec pulley
We got it in stock

[turtleEK1]

ATI Pulley. http://www.atiracing.com/products/da...s/damhonda.htm

Depends how serious you are. Because they are a little pricey.

[crobaa]

God damn I'm gullible. Explored the possibility that bludger is some type of guru engineer/machinist lol

[V73C]

I had the first section machined off the stock crank pulley. That did expose the rubber insert that does the harmonic balancer. Ran the car that way for about a year. I then got an aluminium three section underdrive pulley, and had the air con and power steering sections machined off. Light as - under 500 grams.
Car is essentially track only. B18C with various bits, so the lack of harmonic balancing is no longer an important issue for me.

Hey man, im thinking about machining just one part off mine, do you recommend it ? Did any problems occur afterwards ?

[TODA AU]

Use ATI 916028 (Alloy hub) - incl's hub mounted alternator underdrive. (Worth approx US$190)
Then machine off the front of the hub that will not be used. (For the rest of the ATI damper)
When completed, you have a neat underdrive pulley for alternator that weights just 240g (Which shits on the EK9 N1 pulley)
This works great on track engines.

[Jccck]

Is there any sort of brilliant Dyno-sheet proof that Underdrive/Lightened Pulleys do bugger all for your performance?
Like i can understand the logic behind it.. And it's easily seen in a 'Light Flywheel"

In my Motor's example.. I have a 16.9lbs Flywheel standard.. It now has an 8.9lbs Flywheel. (That's some serious Jenny Craig!)
But a Harmonic Balancer isn't exactly heavy, nor is it of a large diameter like the Flywheel.
So how much exactly is a little Pulley weight loss doing on a small displacement Honda engne??

Underdrive Pulleys are supposed to reduce parasitic drag from the Alt/AC/PS.. But aren't all they doing is making the accessories less-efficient at low RPMs.. And preventing them from having the shit spun out of them when you're flogging around the track? (In which case most people remove PS/AC anyway)

And probbably the most reasonable question i'll ask.. Does the effect (If any) from adding these light/underdrive Pulleys.. Become less effective with more power? ie.. I have 1500kw at the Crank, i could spin a Washing Machine so who cares if there's an Alternator leeching off of me? Whereas if you had a Whippersnipper you'd probably incur some serious issues..

Please tell me it's just a marketing gimmick.
Like hectic anodised hose fittings.

[crobaa]

I just wanted a single belt pulley as I only have an alternator.