I've been reading posts on the pulley and I'd like someone to clear this up for me, I know I could do a search but there is so much to search I figured I'd just ask. The stock pulley does it act as a harmonic balancer or damper and if so would messing with it affect the life of the engine. Cause I was talking it over with a buddy of mine and I had a neon with a underdrive pulley and maybe a couple of months after installing the pulley I threw a rod. At the time no one could tell me what caused it. Yesterday when I was talking to my friend he mentioned that if the pulley acts as a balancer, that changing it could create vibrations and you could perhaps throw a rod. When he said that it clicked in my head and made me think of my neon. So I'm wondering if someone could explain this whole thing to me, because I was interested in the mod, but if it's going to make something out of wack I'm not going to do it.

 

Well it does in fact act as a balancer. The MRZ pulley, if good quality should be pretty balanced though. THe problem is no one has any real info on it without logging miles.

 

the possible gains do not out way the possible damange, im def not doing this mod

 

I fail to see the damage to come out of these pulley's if they are balanced already... and they aren't causing vibrations.

 

Really that is the main thing that I don't get. Pulley acts as a balancer, got it. Aftermarket pulley gets installed, might throw off balance mess things up make engine go boom, got it. If MRZ did a good job of balancing their pulley would it work as good as the stock pulley? Or are there any other things that I need to take into account. Any chance of mrz chiming in with some info and maybe some reassurances?

 

i would much rather prefer customers of mrz's products over mrz themselves... makes for info to be less biased, is all

 

Excuse me if I'm being overly paranoid or difficult.

I know the one guy that got one already seems to be pleased. But I'm just worried about long term reliability.

 

well so far the guy that dyno the pulley seemed to like it

 

I really think we just need to log a few more miles.

Once he gets to about 5k miles I think we will know for sure.

 

yea i agree

 

yeah, unorthadox couldnt make the pulley right for the celica and they are a big co. celicas oil pumps go bye bye with this mod, maybe other cars have better luck tho.

 

only time will tell with these things.......

 

we just half to be patient