I am way over due to change my timing belt. According to Mitsubishi, it should of been done at 60,000 miles and currently I have 71,000. Anyway, my question is, should I change the crank pulley to a light weight one? Is it worth it. If so, I am looking for that is a bolt on and requires no modification. Do you guys have any suggestions? Any reviews on the Agency Power crank pulley? Changing the timing belt is so expensive. And they are also reccommending I change my water pump as well, which is an additional $225. Any advice would be greatly appreciated.

Thanks,

Luis - dime58@aol.com

2005 Evo VIII

 

I haven't done much research on crank pulleys, but I would imagine the gain is pretty insignificant and I believe it effects the alternator's ability to produce power.

As far as changing the water pump goes, I actually changed my original water pump at 60K just to put a faulty one in that started leaking at the shaft seal 10K later hah. I had to rip it down again and put another water pump in there. Since water pumps should go 100K or so, I am not sure it is worth it to replace it or not. If you can do the work yourself and don't mind, I would hold off personally, if I had to do it again.

By the time I rebuild the engine, my water pump will probably only have like 25-30K on it, so I will just reuse it, but I don't mind tearing it down to replace it. If you want to avoid the additional labor costs in the future, because you don't want to do the work yourself, it might be worth it just to replace it now. Just make sure they will guarantee the part/work so if you end up like me with a faulty pump it won't cost you twice the money to get it right.

 

At 60k I did all timing components to me it's cheap insurance see here
http://www.mitsubishiparts.net/catal...ction=631#1523

 

The engine needs a vibration damper. So, don't install any pulley that doesn't have a damper.

Well, one way to cut the cost of a timing belt job is to supply the labor - if you are a good mechanic.

 

stock is fine. any power gain wouldnt be worth the extra cash. and like barney said, you have to get one with a damper. do the water pump and belts at the same time and get it all over with.

 

thanks for the good information. I will do the timing belt/water pump and get it over with. No crank pulley. Like you guys said, for the $, it is not worth the small gain.

 

I actually have one more question...can I just change my timing belt and water pump and be okay or do I have to change everything? I.E. balance belt tensioner, balance belt, timing belt tensioner, timing belt tensioner pulley, and timing belt idler pulley? My mechanic said to change the timing belt and water pump, but after doing some research, I see all the other parts they sell when doing your timing belt so I am a bit confused. Thanks again for the advice.

Luis

 

You can change the pulleys if you want, but I didn't. I would definitely change the timing belt auto tensioner, that is the part that would cause bad crap to happen if it failed. I would probably change the timing belt auto tensioner every time, but the pulleys every other time.

 

I did everything and will again soon just clicked 120k so

 

I have changed my belts and waterpump every 60-70 K.

Only had one waterpump actually leak.

Never changed any pulleys.

The belts are easy enough to change, if you are mechanically inclined, just follow the directions from the service manual.

 

i would ATLEAST change the timing belt, water pump, and timing belt tensioner. you really dont need to replace any pulleys every time you do the timing belt/water pump.

 

I hope you know there are two timing belts on the car. When I did mine the tensioner for the b-belt was throwing grease which means it would fail when it ran dry.

If you are pressed for money and don't mind the car sitting for a few days you can pull it apart and check the condition of each pulley or other moving parts and then order what you thinks needs replacing. .

 

Do it once and do it right... dont waste your time on lightweight crank pulleys unless you go with a ATI or Fluidamper, even those you only need when you remove balance shafts with a built motor, dont go in there unless you replace it all

 

Change the pulleys, my tensioner pulley **** the bed at 47k miles and ate my timing belt and crank position sensor.

 

im getting cams soon and only have 43k miles on my car and was thinkin about changin out the timing belt etc but it seems that everyone is doing it after the reccomended mileage so maybe ill just wait on that...