Lightweight crank pulley

[crobaa]

Hi guys, I have a b18c7 with no power steering or air con and would like to fit a single belt pulley as opposed to the current 3 belt pulley. All of the nice billet ones online seem to be 3 belt style. Does anybody make a single belt 'billet' pulley for b18? I've also been researching online and people seem to have issues on the type r motor, something to do with a balancer in the pulley? Is there an aftermarket pulley that includes this also?

[DCZ 18C]

try password jdm im pretty sure i saw some off that site for ac delete

[crobaa]

Just checked now and couldnt see anything on there, damn you for telling me about that website too. I'm gonna be blowing more money on the car now

[DCZ 18C]

haha well sorry bro could have sworn i saw some from them...
and know you know how i feel.. lol

[Alexplicit]

the car bug bites again!

[crobaa]

Let's all sell our cars and buy houses :p.

Back on topic though, apparently aftermarket pulley is ok on b16 but b18 requires balancer otherwise oil pump fails?

[bennjamin]

just to let you know - honda (i believe) sells a N1 pulley for B series engines. Its just the bare alternator groove thats it. Lightweight....but only for B16a's . There is talk on honda-tech and similar that the reduced weight/harmonics kills B18s and B20s. For the little gain I'd avoid and just use your existing pulley.

[anjin]

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.

[crobaa]

Ok thanks guys, I might give it a miss I wouldn't want to unbalance the motor in any way

[DCZ 18C]

so bro did you end up getting your oil cooler set up happening or what..?

[crobaa]

Funds are low atm but I'm buying a greddy sandwich plate with built in thermostat for now because I have to get it serviced. That way it will be installed and I'll just purchase lines and 11 row cooler at a later date

[DCZ 18C]

aye bro i ended up finding those crank pulleys if still interested.. :)

[Bludger]

Ok thanks guys, I might give it a miss I wouldn't want to unbalance the motor in any way
Just angle grind your current pulley, then you can use a dremal to do the fine tune balancing.

[e240]

fluidyne makes 'em

[Slaz]

Just angle grind your current pulley, then you can use a dremal to do the fine tune balancing.

Dont do this!

Just how do you plan on balancing something that is round when you've cut it with a grinder and a dremel! lol! WOW

That call right there is a doosey!

[Bludger]

You've been around long enough to know that I can do it.

LOL

[Slaz]

LMAO! How dare i question the skills of such a man! :o
Problem is someone will listen to you one day and god help them when they do!:zip: hahahaha!
Your DIY sig below pretty much sums it up!:thumbsup:

[Bludger]

LMAO! How dare i question the skills of such a man! :o
Problem is someone will listen to you one day and god help them when they do!:zip: hahahaha!
Your sig below pretty much sums it up! ; )
If they are that stupid, they deserve it.

Best lessons come from mistakes.

[Slaz]

Thats a fair call right there!

I'll leave you too your good doings kind sir!

[crobaa]

How do you balance it? Don't you need a electronic machine with really specific values? Like a wheel balancer but more specific.

[Bludger]

How do you balance it? Don't you need a electronic machine with really specific values? Like a wheel balancer but more specific.
I just do it by hand, comes out perfect.

[crobaa]

How do you actually know it's percectly balanced though? I'm not being patronizing I just actually dont know.

[Bludger]

I touch it, then I know.

for your own benefit, please re-read carefully this thread from when I started to post.

[crobaa]

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

[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/dampers/charts/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.