crank pulley

[95 gs]

willthis give me more hp and want is the part number for the belt at will fit this

A Brand New JDM Style Lightweight Underdrive Pulley
for
95 96 97 98 99 Mitsubishi Eclipse / Eagle Talon Non-Turbo Engine

Item Condition: Brand New
Reduce the weight in rotating and reciprocating parts, parasitic drag along the drive train; it can reduce the inertial energy loss from the crankshaft
The power gained by speeding up the crankshaft revolution (+~7-10 horsepower)
CNC-machined from lightweight 6061-T6 aluminum billet
Bolt-on installation, new belts are required for complete installation and can easily get it from your local auto parts stores

 

[GSGoinFast]

willthis give me more hp and want is the part number for the belt at will fit this

A Brand New JDM Style Lightweight Underdrive Pulley
for
95 96 97 98 99 Mitsubishi Eclipse / Eagle Talon Non-Turbo Engine

Item Condition: Brand New
Reduce the weight in rotating and reciprocating parts, parasitic drag along the drive train; it can reduce the inertial energy loss from the crankshaft
The power gained by speeding up the crankshaft revolution (+~7-10 horsepower)
CNC-machined from lightweight 6061-T6 aluminum billet
Bolt-on installation, new belts are required for complete installation and can easily get it from your local auto parts stores

im not sure if you want to go with JDM for our american engines :laugh: go with the AF/X one from howell, ive never heard of that one

 

[95 gs]

ya I can git this pulley for $24 from e-bay

 

[SoilentGreen98]

don't buy the ebay ones, get the AF/X one



and yeah Chris, I think I'll wait on those JDM Chrysler parts for now, hahaha

 

[eclipse13]

That is an ebay attempt at an underdrive pulley(UDP). A UDP is smaller and lighter that the stock cast iron crank pulley, it makes the engine not have to work as hard to run the accessories(A/C, radio...) This frees up horse power and making the car rev quicker.

Most people will recomend an AF/X from http://www.howellautomotive.com/How...d=298&osCsid=24685739c3a3105561c459cee1e1a5a1

With the ebay one, it might not even really be smaller, maybe just lighter. The AF/X comes with all of the belts needed, so you dont have to waste your time guessing the belt size.

I have the AF/X and i love it, but I would recomend either AF/X or Unorthodox, because the crank shaft is not something to mess around with. Peronally, an ebay intake or strut bar is OK. But a crank pulley is not something to cheap out on.

PM me with any questions.

 

[Injected]

Does the Howell have a built in harmonic balancer? As much stress that is put on the importance of this modification and as many threads as there are concerning it, I would think that this would come up often.

 

[eclipse13]

The part we are talkin about is for the 420A. It doesn't need a harmonic balancer like the 4G63. There are some lightened crank pulleys for the your engine that have harmonic balancers, I am just not sure where to get them.

 

[Injected]

The part we are talkin about is for the 420A. It doesn't need a harmonic balancer like the 4G63. There are some lightened crank pulleys for the your engine that have harmonic balancers, I am just not sure where to get them.

I know that we are talking about the 420A, I asked HERE about it and was told that the stock UDP does have one. Does someone have a pic of the stock UDP?

 

[GSGoinFast]

I know that we are talking about the 420A, I asked HERE about it and was told that the stock UDP does have one. Does someone have a pic of the stock UDP?

well did you read the answer i gave? the balancer is this thin piece of rubber in it. but many many 420a's are running these pulleys and i havnt heard of any engine wear problems. our cranks are also internally balanced.

 

[eclipse13]

I know that we are talking about the 420A, I asked HERE about it and was told that the stock UDP does have one. Does someone have a pic of the stock UDP?

I could get a pic of the stock 420A crank pulley but I dont have a pic of a stock 4G63 pulley. I wasnt trying to be rude, I was just making sure we werent confusing anyone or getting info between the two engines crossed.

 

[Injected]

well did you read the answer i gave? the balancer is this thin piece of rubber in it. but many many 420a's are running these pulleys and i havnt heard of any engine wear problems. our cranks are also internally balanced.

Yes, I read your reply. Here's the reply you gave me:

the stock pulley does, but the aftermarket ones dont. and i already said i didnt feel a diff.

And that's all you told me. From this I deduced that it was not much different and what else could you expect me to get from such a short response. The 4G63 also has balance shafts as well as the harmonicly balanced crank pulley. In that thread I was asking about the difference in feel from slowing the accessories and I realized that you didn't feel any difference, but I wanted to know if anyone did. Thanks for your reply that you didn't and the information about the pulley.

I could get a pic of the stock 420A crank pulley but I dont have a pic of a stock 4G63 pulley. I wasnt trying to be rude, I was just making sure we werent confusing anyone or getting info between the two engines crossed.

It's all good, and thanks for being cool.

 

[GSGoinFast]

Yes, I read your reply. Here's the reply you gave me:

And that's all you told me. From this I deduced that it was not much different and what else could you expect me to get from such a short response. The 4G63 also has balance shafts as well as the harmonicly balanced crank pulley. In that thread I was asking about the difference in feel from slowing the accessories and I realized that you didn't feel any difference, but I wanted to know if anyone did. Thanks for your reply that you didn't and the information about the pulley.

It's all good, and thanks for being cool.

the question about the stress on the engine from an "unbalanced" pulley comes up now and then. my strongest case is, Doug99RS, the GOD of NT's and a chrysler mechanic, runs the af/x pulley on his car. if there was a danger, im sure he would know about it and avoid it.

 

[Injected]

the question about the stress on the engine from an "unbalanced" pulley comes up now and then. my strongest case is, Doug99RS, the GOD of NT's and a chrysler mechanic, runs the af/x pulley on his car. if there was a danger, im sure he would know about it and avoid it.

I would trust anything that doug says/does too. I didn't know if he was running the af/x. If he is, then I'm sure that there is nothing to worry about. As of right now I am doing research for a build up of a 420A neon in case you guys are wondering why I'm on the N/A forums.

 

[Morphius]

our cranks are also internally balanced.

So, is the 4G63. It's a harmonic dampner. It doesn't balance the crank.

Buschur has reported odd and excessive bearing wear when NOT running a harmonic balancer.

 

[Injected]

So, is the 4G63. It's a harmonic dampner. It doesn't balance the crank.

Buschur has reported odd and excessive bearing wear when NOT running a harmonic balancer.

Was Bushcur refering to the 4G63 or the 420A in that report?

 

[GSGoinFast]

Was Bushcur refering to the 4G63 or the 420A in that report?

4g63

 

[Morphius]

Was Bushcur refering to the 4G63 or the 420A in that report?

4G63.

And how do you think the 420A differs from the 4G63?

 

[Doug99RS]

4G63.

And how do you think the 420A differs from the 4G63?

In regards to the two I would assume this comparison is about equal. While the 4g63 was the platform for testing it is simply a rotating engine assembly and it's results are probably going to be the same or close to the same for any other engine. I think it is also important to point out the stats of buschur. This is a fully built race engine that is beat on regularly. A small problem on a daily driver will only be snowballed on the race engine. It's not an apples to oranges comparison. However, It may be better described like this: If it happens to buschur in 3,000 miles we could expect to see it in 15,000 miles or more.

This really isn't a question about how balanced the crankshaft is so we can throw the balance shafts out the window here. It's more a question of vibrations absorbed by the crank pulley from accessories and SOME caused by the rotation of the crankshaft.

The accessories such as a/c, p/s and the altenator put a load on the crank pulley when they are engaged (especially the a/c) and the rubber in the middle of the stock pulley is there to help absorb part of that shock. There are some vibrations due to combustion and the rotation of the crankshaft that the vibration dampener may eliminate. Most of the vibrations and such, directly from the engine, have been eliminated by the counterweights on the cranks of both the 4g63, it's balance shafts and the 420A.

Long term, as in maybe 100,000 miles of use I suspect that any non-dampened underdrive pulley may acount for some excessive wear on the crank, it's bearings and perhaps aid in some crankwalk *Perhaps*. However, I would assume that given the lack of maintenance, repairs, or knowledge most people submit their cars to it isn't likely that their engine will fail directly as a result of the non-dampened crank pulley. My money would be riding on people mis-shifting, not changing their oil frequently enough, putting on a turbo or turbo kit that the engine isn't built for or not fixing oil leaks which would promote the chances for oil starvation.

I run the UDP because it does free up some horsepower and because I got it cheap. If they made a dampened one I would run it instead but as we get little to no love in the 420A community, I do the best with what I can as the rest of you do.
Doug

 

[eclipse13]

Doug has spoken

 

[GSGoinFast]

thanks doug

 

[Injected]

Thank you Doug.

 

[Doug99RS]

No problem.
D