Cons to a lowered weight pulley set?

[WallsAndFoundations]

Originally Posted by Infamous Performance

At $300 I hesitate. At $150 I buy. Pricing on FA pulleys is higher than EJ pulleys and it is a production numbers game. So, I would expect up to $250 for a FA pulley (for now).

On my own AT cars I run a LWCP. On my MT cars I run a LWFW.

Car noob, thus so many questions:

What does FA and EJ stand for?? I keep seeing those acronyms being used.

If you were to go with a lightened pully set what would you go for?

[gramicci101]

Originally Posted by WallsAndFoundations

Car noob, thus so many questions:

What does FA and EJ stand for?? I keep seeing those acronyms being used.

If you were to go with a lightened pully set what would you go for?

They're engine codes. Subaru boxer engines other than the BRZ and the new WRX are EJ engines, with the following number being engine size. EJ20, EJ25, etc. the BRZ and new WRX are FA20 engines.

[Boxer486]

Originally Posted by Brinks

I've had two lightweight flywheels, one on a 05 20G STi another on a BT Gt28rs Audi A4. Both were terrible. Maybe it was due to the specific set up but they were a buzz kill.

Which brands did you have in particular? Both MT??

Originally Posted by Infamous Performance

Yes. My own AT cars. Due to electronic throttle and tuning there is always a sweet spot for cruising MPG. Find the sweet spot and with a LWCP you can gain 1-2 MPG cruising.

Are you actually determining that using BSFC or guessing via butt dyno? If you have any respective info on the sweet spot of the FA20 feel free to share.

Originally Posted by Infamous Performance

The FA block is similar enough to the EJ. Neither motor has a harmonic balancer. Both motors rely on the small amount of rubber in the crank pulley to absorb vibration. We have already seen internal bearing damage from combining a LWCP and LWFW in the FA motor.

If it's using rubber it may not be a balancer but it is a damper. A balanced damper at that.


I presume all those motors were MT?

[litemup]

Originally Posted by ZDan

...harmonic damper...

THANK YOU! Jeeeeeezus.

[WallsAndFoundations]

Originally Posted by carbonBLUE

What about a super damper? @wootwoot

Wuzzat?

:confused::confused::confused:

[tennisfreak]

I did the lightweight pulley set about 7 months ago.
I got all 3 pulleys (crank, alt, water) for $185 shipped.
I chose this because it was easy to install for me in my garage and did not require any special tools and much simpler than a LWFW.


If and when I go FI I will put my stock crank back on.

[WallsAndFoundations]

Originally Posted by tennisfreak

I did the lightweight pulley set about 7 months ago.
I got all 3 pulleys (crank, alt, water) for $185 shipped.
I chose this because it was easy to install for me in my garage and did not require any special tools and much simpler than a LWFW.


If and when I go FI I will put my stock crank back on.

How are you liking it? Feeling a difference at all? And if so, what?

[Brinks]

Originally Posted by Boxer486

Which brands did you have in particular? Both MT??

ACT StreetLite Flywheel for the STi, im not sure what was in the A4. It was a long time ago and It came with the car. Both were MT, i've never driven an AT with a lightweight flywheel but I can imagine that the drivability is better. I'm not saying that a LWF is terrible all together, its a blast to have in the car for going on drives and makes shifting better, it just gets old fast. Whenever I knew that I was going to have to do a lot of stop and go driving I would try to take my wifes truck. It was that annoying.

I don't care what anybody says. The car was slower from the line after the LWF install. There's a reason why people don't use them for dragracing. If you're planning on taking your car to auto cross then it might be a good install for you. It's going to come down to personal preference its one of those things your either going to love or hate.

[wootwoot]

Can't put a LWF on an automatic.... They don't have flywheels...

[Brinks]

Originally Posted by wootwoot

Can't put a LWF on an automatic.... They don't have flywheels...

lol right, torque converter. Kinda spaced on that one.

[Turdinator]

Originally Posted by Brinks

ACT StreetLite Flywheel for the STi, im not sure what was in the A4. It was a long time ago and It came with the car. Both were MT, i've never driven an AT with a lightweight flywheel but I can imagine that the drivability is better. I'm not saying that a LWF is terrible all together, its a blast to have in the car for going on drives and makes shifting better, it just gets old fast. Whenever I knew that I was going to have to do a lot of stop and go driving I would try to take my wifes truck. It was that annoying.

I don't care what anybody says. The car was slower from the line after the LWF install. There's a reason why people don't use them for dragracing. If you're planning on taking your car to auto cross then it might be a good install for you. It's going to come down to personal preference its one of those things your either going to love or hate.

LWFW is probably a different beast on boosted motors. On a high comp NA (in my experience) it doesn't take much to get used to.

I really should install mine so i can be specific about one on a FA20.

[Brinks]

Originally Posted by Turdinator

LWFW is probably a different beast on boosted motors. On a high comp NA (in my experience) it doesn't take much to get used to.

I really should install mine so i can be specific about one on a FA20.

Very true both of those cars didn't start to spool till about 3400 , if it wasn't for the money and the pain of install I would try one out on my BRZ. Guess I'll shut up about now Just noticed that none of the downsides of a LWF are mentioned anywhere on the forum yet.

[tennisfreak]

Originally Posted by WallsAndFoundations

How are you liking it? Feeling a difference at all? And if so, what?

I like it. Like infamous said if you can get it under $200 then its fine but I would not pay more for it.

I did not notice a big difference just a little quicker to rev than with the stock one on.

Originally I had different plans for my car than I do now and I bought the LWCP set and a TRD intake kit.

Now I have different plans for my car and if I could do it again I would not have done those two mods and saved my ~$550 and put that towards a FI fund.

[WallsAndFoundations]

Originally Posted by tennisfreak

I like it. Like infamous said if you can get it under $200 then its fine but I would not pay more for it.

I did not notice a big difference just a little quicker to rev than with the stock one on.

Originally I had different plans for my car than I do now and I bought the LWCP set and a TRD intake kit.

Now I have different plans for my car and if I could do it again I would not have done those two mods and saved my ~$550 and put that towards a FI fund.

I can get the crank pulley set for 145.

What would you have used the money for instead man?