Put the UR Ultra SS Pulley Set Back On...
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Put the UR Ultra SS Pulley Set Back On...
Got them reinstalled. The only one that comes out in a picture is the PS pulley. Also, here is a picture of the burn on my alternator that caused all my problems (it seems). I will run them a while and let you know how things go after Friday night.


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Here you go: Instructions
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[hr]Originally posted by: 1028CiViC
so you change all 3 ...or 2 crank?[hr]
[hr]Originally posted by: 1028CiViC
so you change all 3 ...or 2 crank?[hr]
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Day one: idle has settled down some and is getting more toward normal. It had been too high then takes a while to settle down. ECM is learning. A/C was fine on a 90+ degree day. More to come. I will be drag racing tomorrow night.
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[QUOTE]Quote
[hr]Originally posted by: FamilyMan
Got them reinstalled. The only one that comes out in a picture is the PS pulley. Also, here is a picture of the burn on my alternator that caused all my problems (it seems). I will run them a while and let you know how things go after Friday night.
good luck, hope you dont snap a crank because of the vibration....
[hr]Originally posted by: FamilyMan
Got them reinstalled. The only one that comes out in a picture is the PS pulley. Also, here is a picture of the burn on my alternator that caused all my problems (it seems). I will run them a while and let you know how things go after Friday night.
good luck, hope you dont snap a crank because of the vibration....
Quote
[hr]good luck, hope you dont snap a crank because of the vibration....[hr]
[hr]good luck, hope you dont snap a crank because of the vibration....[hr]
Pulley's normally only break cranks when a lightweight flywheel is installed, which takes balance away from the Crankshaft.
Using pulleys alone won't create enough torsional vibration to snap a crank, nor to take it above the normally accepted level. However, a lightened/lightweight flywheel in conjunction with underdrive pulleys will create more than .25 Degrees of torsional vibration, and cause decreased life of the crankshaft. But this is over a period of 75,000+ miles. Most of us still have under 50k on our vehicles, and not even that many on new pulleys.
You pose a good point, however without the combination including the flywheel, he has nothing to worry about. However, if he had a V-Configuration engine, or a boxer engine, the natural balancing effect of the design would eliminate the problem all but completely. We have inline engines though, and inline engines are specifically prone to torsional vibration because they are not naturally balanced.
I know 1G and 2G Mitsubishi Eclipses had balance shafts in them, I'm not sure whether our cars do as well. Being SOHC I wouldn't think so, but with the high redline maybe I am wrong. If he's worried about snapping his crank, and he has BOTH pullies AND a lightweight flywheel, and we DID have balance shafts, he could have them remachined and the problem eliminated during a balance & blueprint session.
And I think it's safe to say the only 7th gen civic in this continent with a lightened flywheel is in the posession of Jun USA in California (The super lemon 7th gen).
Whew! That was a long fricken post!
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