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Crank Pulley List (Price, Weight, Part #'s)


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Figured I would share some crank pulley information that I've gathered while researching the topic.

 

Stock

[b]Car ------- Weight[/b]
05 LGT      5.65 lbs
04 FXT      5.65 lbs

 

ATI Super Damper

Product Link

Part Number - 917991

Underdrive Amount - 5% Overdriven

Diameter - 5.5"

Price - $367

Advertised Weight - 5.8 lbs

Actual Weight -

 

Agency Power

Product Link

Part Number - AP-GDA-130BLK

Price - $150

Advertised Weight - 1.2 lbs

Actual Weight - 1.3 lbs

 

 

Cobb

Product Link

Part Number - 300102BK

Price - $135

Advertised Weight - 1.2 lbs

Actual Weight -

 

 

Gimmick M

Product Link

Part Number - NA

Price - $90

Advertised Weight - 1.2 lbs

Actual Weight -

 

 

Grimmspeed

Product Link

Part Number - 095015BK

Price - $125

Advertised Weight - 1.9 lbs

Actual Weight - 2.0 lbs

 

 

Kartboy

Product Link

Part Number - KB-050-EJ

Price - $85

Advertised Weight - 2.4 lbs

Actual Weight -

 

 

Perrin

Product Link

Part Number - PSP-ENG-100BK

Price - $114

Advertised Weight - 1.2 lbs

Actual Weight -

 

 

UR

Product Link

Part Number - CS1311A (021310112)

Price - $224

Advertised Weight - 2.0 lbs

Actual Weight -

 

 

Fluidampr

Product Link

Part Number - 531101

Price - $347

Diameter - 5.375"

Advertised Weight - 6.9 lbs

Actual Weight -

Part Number - 531101

 

OBX

Product Link

Part Number -

Underdrive Amount -

Diameter - 4.31"

Price - $80

Advertised Weight - lbs

Actual Weight - 1.0 lbs

Part Number -

 

 

Torque Solution

Product Link

Part Number - TS-SU-207A

Price - $99

Advertised Weight - 1.32 lbs

Actual Weight -

 

 

Go Fast Bits Non-Underdrive

Product Link

Part Number - 2009

Price - $130

Advertised Weight - 1.27 lbs

Actual Weight -

 

Go Fast Bits Underdrive KIT

Product Link

Part Number - 2014

Underdrive Amount - Alternator: 16.5%, Power Steering: 18%

Price - $300

Advertised Weight - Crank: 0.86lb, Power Steering: .37lb, Alternator: .14lb

Actual Weight -

 

 

Ralco RZ

Product Link

Part Number - 914923

Underdrive Amount -

Diameter -

Price - $189

Advertised Weight - 1.5 lbs (with 2 more pulleys)

Actual Weight -

 

Cosmo Racing

Product Link

Part Number - SLE9706-LP

Underdrive Amount - ?

Diameter - ?

Price - $64.50

Advertised Weight - ?

Actual Weight - ?

 

 

Template

Product Link

Part Number -

Underdrive Amount -

Diameter -

Price - $

Advertised Weight - lbs

Actual Weight -

 

------ OLD FORMAT -------

Aftermarket:

[b]Brand ----------- Price --- Weight ----- Part #[/b]
Agency Power      $104      A1.3 lbs      AP-GDA-130BLK
Cobb              $135      1.2 lbs      300102BK
Gimmick M         $90       1.2 lbs      NotAvailable
Grimmspeed        $115      A2.0 lbs      095015BK
Kartboy           $85       2.4 lbs      KB-050-EJ
Perrin            $114      1.2 lbs      PSP-ENG-100BK
UR                $224      2.0 lbs      CS1311A (021310112)
Fluidampr         $347      6.9 lbs      531101

 

Note: If you see an A infront of the weight, that's an actual weight of the pulley as weighed by the community.

Edited by covertrussian

05 LGT 16G 14psi 290whp/30mpg

12 OBP Stock 130whp/27mpg@87 Oct

00 G20t GT28r 10psi 250whp/36mpg

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What does the stock one weigh?

 

It seems to vary by the year and car, like say 05 WRX was 4.8lbs, I'll weight my 05 LGT when I remove it. But for this reason I had to search for actual pulley weight instead of the typical 3-5lbs lighter then stock marketing crap.

05 LGT 16G 14psi 290whp/30mpg

12 OBP Stock 130whp/27mpg@87 Oct

00 G20t GT28r 10psi 250whp/36mpg

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Ordered a Grimmspeed pulley, it's pretty nice, definitively a high quality piece. Has some nice weight to it, I was actually worried that it would be more then 2.6lbs. Put it on my kitchen and then shipping scale 2.06lbs!

05 LGT 16G 14psi 290whp/30mpg

12 OBP Stock 130whp/27mpg@87 Oct

00 G20t GT28r 10psi 250whp/36mpg

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  • 6 months later...

wish i had this info a few weeks ago.

 

i have a gms pulley with an excedy clutch/flywheel to replace the dual mass, and it's causing havoc on my idle right now.

 

looks like i'm going to order a kartboy one to add some weight, and hopefully resolve my issues.

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  • 6 months later...
Figured I would share some crank pulley information that I've gathered while researching the topic.

 

Stock

[b]Car ------- Weight[/b]
05 LGT      5.65 lbs
04 FXT      5.65 lbs

Aftermarket:

[b]Brand ----------- Price --- Weight ----- Part #[/b]
Agency Power      $104      1.0 lbs      AP-GDA-130BLK
Cobb              $135      1.2 lbs      300102BK
Gimmick M         $90       1.2 lbs      NotAvailable
Grimmspeed        $115      A2.0 lbs      095015BK
Kartboy           $85       2.4 lbs      KB-050-EJ
Perrin            $114      1.2 lbs      PSP-ENG-100BK
UR                $224      2.0 lbs      CS1311A (021310112)
Fluidampr         $347      6.9 lbs      531101

Note: If you see an A infront of the weight, that's an actual weight of the pulley as weighed by the community.

 

 

dead thread bump

 

 

i weighed the Agency Power pulley as best i could, and came up with 1.3lbs

it's over 1 lb for sure though

"Build" Thread <--Link

(OLD) '05 EJ255 now a '13 EJ257 Bottom End w/D25 heads (NEW)

Forever Slow

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Never noticed this informative thread before but definitely helpful. I had always heard and read that the GS pulley, while weighing more than most, was better balanced to be lighter than stock but still maintain a nice idle for those of us running LWFW's. I'd like to replace mine this summer to beat an impending separation of the stocker.

Updated parts list since original part-out here.

 

Original Full part-out of my LGT HERE!

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I personally like the GS one the most, it's very high quality, and only 1lb heavier then the lightest pulley. If I you don't gain any HP from loosing 4lbs, then you wont gain anything more from loosing another pound, thus no reason to go lighter just to run into CEL's.

05 LGT 16G 14psi 290whp/30mpg

12 OBP Stock 130whp/27mpg@87 Oct

00 G20t GT28r 10psi 250whp/36mpg

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You should add Ralco RZ to the list. I think they're the nicest ones, they remind me of the old school Centerline wheels. I bought a set that contains the crank, alternator and PS pulleys. They're nicely machined, and fairly inexpensive. I haven't had a chance to weigh them yet, will try to in the next week or so.

 

Zack K.

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You should add Ralco RZ to the list. I think they're the nicest ones, they remind me of the old school Centerline wheels. I bought a set that contains the crank, alternator and PS pulleys. They're nicely machined, and fairly inexpensive. I haven't had a chance to weigh them yet, will try to in the next week or so.

 

Zack K.

 

You talking about these?

 

https://www.ralcorz.com/RalcoRZ-914923/

 

or the legacy kit

 

https://www.ralcorz.com/RalcoRZ-914916/

 

I know engines are the same though. If the crank pulley is not obnoxiously light I might grab that kit.

 

Will lightening the other pulleys along with the crank pulley have the same effect as just a really light crank pulley? Not really wanting a CEL :lol:

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I got the kit in the first link,the one with the alt. pulley (that's the only one installed so far,lol,fits like a glove) You're lowering the rotating mass of the motor with lighter pulleys,basically minimizing spinning losses. Unless they're underdriven (smaller diameter than stock,which might throw off certain parameters) there shouldn't be any CEL's
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Lightweight crank pulley and lightweight flywheels are known to throw CEL's. Other pulleys being light weigh doesn't hurt anything. Mind weighing your stock alt pulley and ps pulley vs the new ones?

 

Just to be clear, I'm talking about the AT, NOT MT throwing the CEL.

Here's an interesting thread on the subject http://legacygt.com/forums/showthread.php/pulley-vs-lightweight-flywheel-37269.html?t=37269&highlight=cel+installing+lightweight+crank+pulley

 

I can weigh the stock alt pulley and the Ralco aftermarket PS and crank pulleys, the Ralco alt pulley is already on the new alternator...

 

Zack K.

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  • 3 months later...

OBX- lightweight and underdrive, 1.0 lbs and 4 5/16" diameter.

$80 shipped on Amazon. Red, Blue, or Silver.

 

zUQtJp-WHvjhc328bXmxVx7XjPqUdnVg9aApgOAN_uQ=w511-h908-no

 

http://ecx.images-amazon.com/images/I/41qIkwY3-YL.jpg

 

OBX also makes a second fancier version lightweight pulley, on Amazon it says underdrive, but it may not be. $89.99:

http://ecx.images-amazon.com/images/I/41wYvNFHvdL.jpg

 

Unorthodox Racing used to make an underdrive Subaru pulley but all the new ones are stock diameter, lightweight. You can occasionally find an old Unorthodox Racing underdrive pulley on eBay. Unorthodox sells just the crank pulley, just the P/S pulley, or both as a set.

1.00 lbs. ,3.00 oz. for the lightweight crank pulley.

 

http://www.unorthodoxracing.com/pulleys

 

http://www.unorthodoxracing.com/media/catalog/product/cache/1/image/265x265/9df78eab33525d08d6e5fb8d27136e95/c/s/cs1311afl_6.jpg

 

 

 

All the other ones I can find are stock diameter pulleys at 5.5" . Perrin, Cobb etc...

Edited by Sgt.Gator
Edited the size of the OBX.

Nothing like a race track to find the weak points in man and machine.

"Good Judgement comes from Experience. Experience comes from Bad Judgement"

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Just to verify, looks like underdrive part number is P10681B, while light weight regular size is PAJ773BL right?

 

Also I wish we could use tables in the posts, it's a pain to add new entries currently so might switch it to be a screenshot of my spreadsheet or store the data inline.

Edited by covertrussian

05 LGT 16G 14psi 290whp/30mpg

12 OBP Stock 130whp/27mpg@87 Oct

00 G20t GT28r 10psi 250whp/36mpg

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