Lightweight crank pulley on an AUTOMATIC - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Gani21 · 09-19-2013, 12:34 PM

Has anyone done this already? will i run into problems such as smoking out the torque converter, just bought a perrin one and im a bit uneasy if this will break things. also whats the name of the tool to hold the pulley in place for this motor? thanks guys

neutron256 · 09-19-2013, 03:54 PM

Quote:

Originally Posted by Gani21

Has anyone done this already? will i run into problems such as smoking out the torque converter, just bought a perrin one and im a bit uneasy if this will break things. also whats the name of the tool to hold the pulley in place for this motor? thanks guys

Yep I've been running a Perrin pulls for over a year with no issues. I don't think there should be any concern about you're torque converter. It makes a difference, but not that kind of difference.

Obja · 09-19-2013, 04:51 PM

When i presented the idea of buying one for an automatic i was told that it wouldn't make a difference whatsoever so i'd be wasting my money

wlfpck · 09-19-2013, 05:24 PM

How would it have no difference? The fact that you are reducing the rotational mass would definitely make a difference.

The real question is how much of a difference. In which, others can chime in on their experiences.

Efferalgan · 09-20-2013, 05:47 PM

Have the Go Fast Bits pulleys set installed on AT. No issues so far, although no considerable difference either. I mean there is difference, the engine feels a bit "lighter" and responsive to the acceleration pedal, but far from "day and night" improvement.

To remove the stock pulley you ideally need something like this:

http://www.company23.com/index.php?r...&product_id=51

But in fact what is required is a metal rod with 2 "fingers"/bolts which could be inserted simultaneusly into any 2 of the 4 holes on the stock crank pulley to hold in place while unscrewing the bolt.

Jvalich · 09-20-2013, 05:56 PM

I have about 15000 miles on a Perrin Lightweight pulley with no issues. No night and day difference but the engine did feel a touch more responsive. Taking away rotational mass can't really hurt... can it?

troek · 09-21-2013, 09:43 AM

haters gonna hate

Captain Insano · 09-21-2013, 03:57 PM

Quote:

Originally Posted by Obja

When i presented the idea of buying one for an automatic i was told that it wouldn't make a difference whatsoever so i'd be wasting my money

That makes absolutely no sense whatsoever. Not chastising you, more just indicating somebody gave you bad info. Losing rotational mass on any car is good, including automatic transmission cars. Do lighter wheels help AT cars? Do lighter drive shafts help AT cars? Do light weight parts in general help AT cars? These are rhetorical questions, the answer to all of these questions is "yes".

And for those comparing, this won't make a night and day difference on either an auto or a manual. It will make a slight difference in responsiveness as people have indicated (I've run pulleys on past MT cars). This for either an auto or manual. For the cost, I do consider pulleys a worthy mod for either an auto or manual.

Gani21 · 09-23-2013, 03:24 AM

ive heard thing about the torque converter smoking out due to way too much weight being taken off. i just wanted to see the peoples experience with the aftermarket pulley on their AT cars. also will it throw off the check engine light and how did you guys who have it on your car get it on in the first place?

Hawk77FT · 09-23-2013, 04:18 AM

Quote:

Originally Posted by Captain Insano

That makes absolutely no sense whatsoever. Not chastising you, more just indicating somebody gave you bad info. Losing rotational mass on any car is good, including automatic transmission cars. Do lighter wheels help AT cars? Do lighter drive shafts help AT cars? Do light weight parts in general help AT cars? These are rhetorical questions, the answer to all of these questions is "yes".

And for those comparing, this won't make a night and day difference on either an auto or a manual. It will make a slight difference in responsiveness as people have indicated (I've run pulleys on past MT cars). This for either an auto or manual. For the cost, I do consider pulleys a worthy mod for either an auto or manual.

Your answer reminds me of this guy:

neutron256 · 09-23-2013, 09:56 AM

Quote:

Originally Posted by Gani21

ive heard thing about the torque converter smoking out due to way too much weight being taken off. i just wanted to see the peoples experience with the aftermarket pulley on their AT cars. also will it throw off the check engine light and how did you guys who have it on your car get it on in the first place?

A crank pully tool is needed to install in on an AT which basically just allows you to hold the pully still while while allowing access to the bolt. I got the one from Grimmspeed. I've been running my peering pulley for over a year now and have had zero problems with it.

Gani21 · 09-23-2013, 07:39 PM

Can anyone show me how to install it?

neutron256 · 09-23-2013, 08:07 PM

Quote:

Originally Posted by Gani21

Can anyone show me how to install it?

Just check out the DIY. It's exactly the same as the MT except you need a tool to hold the pulley still while you loosen/tighten the bolt.

Plxdjake89 · 09-23-2013, 08:28 PM

Should have gotten a manual?

09-19-2013, 12:34 PM	#1
Gani21 Member Join Date: Aug 2013 Drives: Blue Frs Location: Philly ,United States Posts: 49 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Lightweight crank pulley on an AUTOMATIC Has anyone done this already? will i run into problems such as smoking out the torque converter, just bought a perrin one and im a bit uneasy if this will break things. also whats the name of the tool to hold the pulley in place for this motor? thanks guys

09-19-2013, 05:24 PM	#4
wlfpck Senior Member Join Date: Sep 2012 Drives: 2015 GTI Location: OH, TX, IL Posts: 165 Thanks: 5 Thanked 72 Times in 33 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	How would it have no difference? The fact that you are reducing the rotational mass would definitely make a difference. The real question is how much of a difference. In which, others can chime in on their experiences. __________________ 2013 GTI - Gone 2015 GTI

09-20-2013, 05:56 PM	#6
Jvalich Member Join Date: Jun 2013 Drives: '13 Subaru BRZ Limited Location: Florida Posts: 35 Thanks: 3 Thanked 24 Times in 13 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	I have about 15000 miles on a Perrin Lightweight pulley with no issues. No night and day difference but the engine did feel a touch more responsive. Taking away rotational mass can't really hurt... can it? __________________ JV White 2013 BRZ Limited auto6, Perrin LW Pulley Manga Flow CB Exhaust, Motive Master Cylinder Brace K&N filter, Meagan Racing Strut Bar, P&L Motorsports SS Brake lines

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09-20-2013, 05:47 PM	#5
Efferalgan Senior Member Join Date: Sep 2012 Drives: 2025 BRZ, ex-2012 GT86 Location: Dubai Posts: 466 Thanks: 422 Thanked 234 Times in 139 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Have the Go Fast Bits pulleys set installed on AT. No issues so far, although no considerable difference either. I mean there is difference, the engine feels a bit "lighter" and responsive to the acceleration pedal, but far from "day and night" improvement. To remove the stock pulley you ideally need something like this: http://www.company23.com/index.php?r...&product_id=51 But in fact what is required is a metal rod with 2 "fingers"/bolts which could be inserted simultaneusly into any 2 of the 4 holes on the stock crank pulley to hold in place while unscrewing the bolt.

09-23-2013, 03:24 AM	#9
Gani21 Member Join Date: Aug 2013 Drives: Blue Frs Location: Philly ,United States Posts: 49 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	ive heard thing about the torque converter smoking out due to way too much weight being taken off. i just wanted to see the peoples experience with the aftermarket pulley on their AT cars. also will it throw off the check engine light and how did you guys who have it on your car get it on in the first place?

09-23-2013, 07:39 PM	#12
Gani21 Member Join Date: Aug 2013 Drives: Blue Frs Location: Philly ,United States Posts: 49 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Can anyone show me how to install it?

09-23-2013, 08:28 PM	#14
Plxdjake89 Senior Member Join Date: Jun 2012 Drives: 2013 Scion FR-S-white out Location: 818 So Cal Posts: 612 Thanks: 354 Thanked 169 Times in 110 Posts Mentioned: 4 Post(s) Tagged: 1 Thread(s)	Should have gotten a manual?

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