superturboprelude

are the ur crank pulley bad for the h22a jdm motors what kind of long term and short term problems would arise with using these ur crank pulley?

preluda92

The stock pulleys have three layers. metal, rubber, then metal. They act as an engine damper. It's alot like removing your balance shafts. Your pretty much shaving time off your engines life by reducing the stability of the whole thing. Especially if your revving it out all the time. It'll vibrate alot more up top.

BoostedH23a1

mines being going strong for the past 3 years

BoostedH23a1

be he is right the damping pretty much goes out the window.

superturboprelude

yeah i feel more vibration and engine noise is that normal?

del_parker

i've had my UR pulley on for about a year now. engine has 184k miles now, 21k with the pulley. i'm awaiting its death, but it still seems to be pulling strong.

NXLude

Ive had no problems with mine.....my car makes so much noise and vibrates alot already (motor mounts) that I couldnt tell any diff from the UR.......Id get it again if i had another chance....

superturboprelude

heheh yeah
i have mine for about a year now and i havent had a problem but yeah i think its all how you take care of your car

BoostedH23a1

make sure your oil pump is good... just for ***** and giggles

H22Si

i traded my UR pulley straight up for a new factory piece.....haven't questioned my decision yet.

LudeyKrus

I heard they were fairly hard on the mains after a while; makes sense, since they are basically the harmonic balancer for our cars.

satan_srv

I had one on my h23 VTEC when I cracked the crank and melted some mains...if that means anything. It defintely didn't help keep my motor alive

superturboprelude

is there a different between stock automatic crank pulley and manual crank pulley?

satan_srv

no.

93hatched_projekt

I'm curious , How much Hp/Tq are you guys getting from these pulleys (h22)

biglew

Not to hijack but someone mentioned this is like removing balance shafts. These are completely different forces that the pulley damping and balance shafts act upon.

superturboprelude

so what you are saying is the crank pulley dampens the motor from vibration and the balancer shaft balances the crank shaft

biglew

Having a balanced crankshaft and and pulley assambly works to correct first order vibrations caused by the imbalance of the rotating assembly (crank motion).

The balance shafts act upon the second order vibrations caused by the reciprocating assembly (up and down motion of pistons) which causes the engine to shake.

fe519

had mine on for approx 3 years and still working fine

biglew

Here is a link to some info read the update at the very bottom of the page. Of course this is just one persons experiece mind you. http://www.ntpog.org/reviews/u...shtml

Doc_Honda

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by preluda92 &raquo;</TD></TR><TR><TD CLASS="quote">The stock pulleys have three layers. metal, rubber, then metal. They act as an engine damper. It's alot like removing your balance shafts. Your pretty much shaving time off your engines life by reducing the stability of the whole thing. Especially if your revving it out all the time. It'll vibrate alot more up top.</TD></TR></TABLE>

Wrong. The Prelude has *GASP* balance shafts. The engine is fine and WILL NOT LOSE LIFE because of the pully. You are referring to a different engine.

4bidden

The stock crank pulley is also dampened.

H22Si

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4bidden &raquo;</TD></TR><TR><TD CLASS="quote">The stock crank pulley is also dampened.</TD></TR></TABLE>

......and honda made it dampened, for a reason
it's not worth the money or the few "extra hp" it makes

del_parker

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by H22Si &raquo;</TD></TR><TR><TD CLASS="quote">
it's not worth the money or the few "extra hp" it makes</TD></TR></TABLE>

i'm enjoying mine.

1SICH22

the damper is really not need, the old honda engines never had it and they ran for many 100,000 miles...the honda cranks are soo well balanced u can run the UR crank pulley's without a glich. A member of PO.com had a crank pulley and said it was a "UR Pulley" but it wasnt and it broke, yet UR has never had one broken crank pulley or no motor has crankwalked b/c of thier crankpulley so u are safe.