d112crzy : 1993 Accord LX

[imismyh0nda]

joser WHADDUP

[blackice]

If you are eliminating power steering, then there really is no need to underdrive the accessories, because the alternator doesn't make a significant enough different to matter anyway. That provides a wasted cost to benefit ratio.

less weight on the rotating mass does mean more power. an underdrive pulley is still lighter than a standard sized pulley if they are both aluminum.

And no, the crank isn't externally balanced, but the rotating assembly IS balanced taking that crank pulley into account.

There is a lot more to harmonics other than is something designed specifically to damp harmonics. Everything on that rotating assembly in one way or another affects the harmonics of it.

I never said a crank pulley wouldn't affect harmonics at all. I stated aftermarket crank pulleys such as the ur are balanced and wouldn't throw off the balance of the crank. BUT i also said that aluminum can resonate more than an iron crank like the stock one. balance and harmonics are related but not the same thing. bad balance will lead to bad harmonics but not necessarily vice versa.

And no, it wasn't just in relation to race builds. Hondafan kept his stock pulley because of what he specifically learned from those two guys. I am pretty sure the more I think about it that it was Larry Widmer who told him you can specifically tell the difference with even a stock engine that had an unorthodox pulley, because there is uneven main journal bearing wear. If that isn't indicative of harmonic issues, I don't know what is.

Like I said, talk to Hondafan. I know how thorough he is, and he will be able to cite sources, and probably recall the conversation.

And sorry, between Unorthodox who is pushing a product, and Honda tech dudes, vs Bisi and Endyn, I will believe the two guys who build real engines and have actual long term experience.

never did i mention siding with or getting information from unorthodox or "Honda tech dudes". i rarely hop on honda forums any more since i have owned a nissan for over a year now. over the years i owned my two accords and browsed the honda forums i have yet to see any bearing wear or oil pump issues that can be substantiated and directly connected to the installation of a solid aluminum crank pulley.

i hear everyone talk about it but never have seen any proof that is irrefutable. if bisi, larry or the endyn guys have more info that for sure proves the issue great, it'd be cool to finally see it. in the meantime everyone has an opinion on this issue just like the myth of exhaust back pressure or turbo lag. about his test or whatever he was working on, i'm wondering how it was proven that the unorthodox pulley caused the bearing wear issue. how long was it run and all that, was the engine brand new when the pulley was installed? etc.... let me ask this though, if not a solid aluminum crank pulley for harmonics reasons why not use one of the dampened fluidampr pulleys? the gains for less weight are there along with the underdrive advantages.

[gloryaccordy]

blackice must be runnin a non-dampened underdrive pulley

Wats the big deal... we have seen proof from experience builders... removing balance shaft = OK, going w/an undamped drive pulley = not OK; if Bisi says so I would take his word over urs

[d112crzy]

Cory, no one's denying there isn't gains with less weight and underdrive pulleys. We don't care for that as the gains aren't significant enough to justify the bearing wear caused by them.

No one has posted these findings because it's like a "secret" if you will. Similar to that of bearing clearances. All part of the secrets of building and engine that you should never let just anyone know. It's part of the game.

[PR CB7]

i beg to differ. there is a reason for it nagger. besides rotating mass you lose off the stock pulley, rotating your accessories slower will free up horsepower. do some research before you rag on stuff, reminds me of the time you asked me how to test spark plug wire resistance...btw i hope you didn't get shocked too much with that.

bitch

u gotta be careful the shit u say in ur threads because u might upset some lil girls here

also its funny because ur a tuner some people here think u MUST know EVERYTHING about a car especially hondas

i bet u 40$ bucks that if i posted the UR pulley no one would have bothered

[gloryaccordy]

bitch

u gotta be careful the shit u say in ur threads because u might upset some lil girls here

also its funny because ur a tuner some people here think u MUST know EVERYTHING about a car especially hondas

i bet u 40$ bucks that if i posted the UR pulley no one would have bothered

Is engine failure worth a few extra HPs

[F22HB]

Is engine failure worth a few extra HPs

Jeez you guys are kindof taking this too far.

[gloryaccordy]

Jeez you guys are kindof taking this too far.

If he wants to put his engine at risk he can go right ahead. Just seems unnecessary

[Clueless]

You're not gonna see much gains removing the stock pulley, I'd find it a better option to turbo then waste money on the "lightened" crap. Only thing I'd lighten is the flywheel.

[gloryaccordy]

You're not gonna see much gains removing the stock pulley, I'd find it a better option to turbo then waste money on the "lightened" crap. Only thing I'd lighten is the flywheel.

Going turbo is not all that it's cracked up to be

[J-specCb4]

nor is it for everyone.

[owequitit]

less weight on the rotating mass does mean more power. an underdrive pulley is still lighter than a standard sized pulley if they are both aluminum.

Yeah, it does mean more power. If you calculate out the mass loss etc, I bet you gain less than 3 HP from changing the crank pulley. It isn't worth the bearing wear IMO.

I have heard the same thing as Jose, from the same sources, and I choose to believe them. That is OUR choice. If you want to do it, go for it.

[owequitit]

You're not gonna see much gains removing the stock pulley, I'd find it a better option to turbo then waste money on the "lightened" crap. Only thing I'd lighten is the flywheel.

Unless you don't prefer boosted engines.

[d112crzy]

Crappy cell pic of my sleeved block. I can't wait till tax returns

[Clueless]

Unless you don't prefer boosted engines.

True....want to buy a 7m to swap in? :-D