Pulley install for K20 (or any Honda)

[tehcodeman]

Anyone have any experience installing a crank, idle, and /or alternator pulleys? I bought some NST pulleys like 6 months ago and still haven't put them on. Apparently, Honda crank pulley bolts are a PITA to get off and I definitely don't have the tools to do it (air gun, etc). I did get the Honda crank pulley hex tool that's supposed to help.

Anyone wanna help a brotha out? I can pay you for your time/effort!

Will probably also need an angle grinder to grind down my torque damper bracket a little to make room for the idle pulley.

[killa_D]

i never really worked on a k20 but i guess its doesnt really matter i use a puller and it comes off like in 2 sec. is not hard and to install it back is easier. Theres no real science behind it and i think you can rent the tool at your local auto part store. Also i just finish reading your full post and you provably already know that. I have all the tools to help you out just dont have the time lol maybe on the weekend lmk.

[Matticus]

I personally wouldn't run under drive pulleys. But, I have pulled a few pulleys off my car for different reasons.

[tehcodeman]

I personally wouldn't run under drive pulleys. But, I have pulled a few pulleys off my car for different reasons.

Just curious...but why wouldn't you? Heard any horror stories about them on our motors?

[tehcodeman]

Actually, the crank is 15% underdrive and the alternator is 15% overdrive in my kit.

[Matticus]

Just curious...but why wouldn't you? Heard any horror stories about them on our motors?

I have never had a reason to swap the stock pulleys out. They have always worked fine for me. IMO they are expensive for the power you will gain. I would rather ditch the complete ac system, stock alternator and h2o pump to run a dseries alternator and an electric pump *if* I was looking for power out of the serp. system. You may as well start looking around for a types oil pump so you can have the difference in power between the 05+types and SI.

Not to mention, I wouldn't want to reduce the the speed of the belt that runs the water pump by 15% on my daily driver. Some people may praise the things and claim all kinds of power numbers but, I personally wouldn't run them.

[tehcodeman]

Not to argue with you because you definitely know more about my car than I do, lol.....but, the newer idler pulley is slightly different than stock to compensate for the 15% underdrive of the crank and 15% overdrive of the alternator. NST's kit is designed so the idle/water pump runs at the same speed as stock if I'm not mistaken.

[Matticus]

Not to argue with you because you definitely know more about my car than I do, lol.....but, the newer idler pulley is slightly different than stock to compensate for the 15% underdrive of the crank and 15% overdrive of the alternator. NST's kit is designed so the idle/water pump runs at the same speed as stock if I'm not mistaken.

I assume the crank pulley will drive the system 15% slower. The alternator is 15% overdriven to compensate for the difference in speed for the whole system. Meaning the waterpump and ac compressor are both running 15% slower. Thats about the only way I could understand it.

[lyttleviet]

Listen to Matt on this one. He has taken the whole damn K20 apart and put it back together..

[tehcodeman]

Okay, so some dude on 8thcivic was running these and his NST idle pulley shattered. Even though he was boosted, I'm still not feeling good about these now. Gonna sell 'em.

[Matticus]

Gonna sell 'em.

:thumbsup: