Aftermarket Crank Pulley Install - Page 13 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

PMok · 08-16-2013, 12:45 AM

great write up for the DIY @Enigmus -- gave me all the info I needed to install my Kartboy crank pulley. Though like many of you the toughest part was taking getting that damn crank bolt loose. It requires a ridiculous amount of force to break it loose. Broke one breaker bar and bent another ratchet using a jack handle for leverage. Bought a 3rd 24" breaker bar and it finally gave, though not before a good amount of struggling and me almost throwing in the towel. Everything else was pretty straightforward. Did have to double-check the belt was properly seated everywhere, and on my re-check found that the belt was a little off on the underside of the crank pulley, so glad I re-checked it all before I put everything back on and started the car.

Like others have noted with the Kartboy pulley there is a whine at about 2500 rpm but since it's a known thing I am not too worried about it. Definitely felt some improvement in the throttle response and acceleration, though it's hard to quantify. I was going to buy a Perrin but picked up the Kartboy for a good deal less at 86FEST, so I am happy with the bang-for-buck factor of this mod.

BRZ68 · 08-16-2013, 05:24 AM

Quote:

Originally Posted by BRZ68

Did anybody notice the tensioner vibrating after the pulley install? Not sure if this is a normal vibration of the tensioner with the stock pulley..i didnt notice. The vibration on the tensioner stabilizes when there is throttle. Any input is appreciated. Thanks

Here are vids of my pulley and tensioner vibration after the install.

[ame="http://youtu.be/lx9HqeEd2z0"]http://youtu.be/lx9HqeEd2z0[/ame]
[ame="http://youtu.be/dXUJLwLBCg4"]http://youtu.be/dXUJLwLBCg4[/ame]

DriftEm · 08-16-2013, 08:41 PM

for me, it vibrated before the pulley install.

Panman · 08-17-2013, 10:30 PM

If you follow the DIY - you should remember that the tensioner pulley is a LH thread, if you loosened it to remove the belt you are going to need to tighten it again to spec (but bear in mind, LH Thread).

2point0 · 08-19-2013, 03:04 PM

Quote:

Originally Posted by PMok

Like others have noted with the Kartboy pulley there is a whine at about 2500 rpm...

Glad to hear someone else mention this. I barely notice it anymore.

Efferalgan · 08-19-2013, 04:47 PM

Quote:

Originally Posted by BRZ68

Here are vids of my pulley and tensioner vibration after the install.

Mine is shaking more with the stock pulley.

Tim_Asphalt_FRS · 08-19-2013, 05:29 PM

I saw a car at 86fest with the stock pulley and it was shaking way worse than that.

Sent from my iPhone using Tapatalk - now Free

frsdiy · 09-02-2013, 01:11 AM

Quote:

Originally Posted by Tim_Asphalt_FRS

I saw a car at 86fest with the stock pulley and it was shaking way worse than that.

With the OEM crank pulley my tensioner pulley would wobble slightly. The car idles smoother now with the new perrin pulley.

[ame="http://youtu.be/aVxm-ia2Y7I"]http://youtu.be/aVxm-ia2Y7I[/ame]

My suggestion for people experiencing wobble is to put some slack in the belt using the tensioner pulley. Feel with your fingers around any pulleys that have a ridge and make sure the belt is not riding on the ridge. I did this and found that the belt was sitting on the ridge.

Panman · 09-02-2013, 03:40 AM

Quick question on the alternator pulley if anyone has replaced it with one of the options out there. Does anyone know the size of the nut you need to remove?

VietnamPhenom · 09-02-2013, 04:07 AM

Its a 24mm nut. If you have an impact gun that is fast enough, it'll zip it off with ease. If not, you'll have to use a chain wrench or something to keep the pulley stationary.

mike_ekim1024 · 09-06-2013, 03:15 PM

Has anyone had any CELs with any aftermarket pulley so far?

The Kartboy pulley says "A good bit lighter than stock but not light enough to throw a CE light."

http://www.fa20club.com/product.php?...cat=293&page=1

So anything lighter than 1 lb, or 1 lb with carbon fiber drive shaft with throw a CEL from what I've read.

Mike

Jolaessss · 09-09-2013, 03:03 AM

Very nice, I'll be using this guide in the near future!

Sexyeve · 09-21-2013, 11:16 PM

Good guide ! Just switched my alternator , water pump and crank pulley and I love the way the car feels now.

Techfl3x · 10-06-2013, 03:38 AM

Thanks for the guide @Enigmus ! Still having trouble with the crank bolt. I was trying to loosen it and thought I was making progress when something gave and had me diving head first into the engine bay. My socket adapter snapped!!! Luckily I caught myself and didn't ding anything. This is one stubborn bolt!, doesn't help with the squishiness of the pulley.
Name: ImageUploadedByTapatalk1381041262.405459.jpg
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Name: ImageUploadedByTapatalk1381041262.405459.jpg
Views: 1528
Size: 294.1 KB

While i tough out the night in defeat, Id appreciate any more advice on getting this sucker loose.

08-16-2013, 12:45 AM	#169
PMok Codename: Stitch Join Date: Apr 2012 Drives: 91 MR2; 06 IS350; 16 BRZ; 18 CX-5 Location: Hayward/NorCal Posts: 5,248 Thanks: 4,021 Thanked 5,436 Times in 2,307 Posts Mentioned: 462 Post(s) Tagged: 6 Thread(s)	great write up for the DIY @Enigmus -- gave me all the info I needed to install my Kartboy crank pulley. Though like many of you the toughest part was taking getting that damn crank bolt loose. It requires a ridiculous amount of force to break it loose. Broke one breaker bar and bent another ratchet using a jack handle for leverage. Bought a 3rd 24" breaker bar and it finally gave, though not before a good amount of struggling and me almost throwing in the towel. Everything else was pretty straightforward. Did have to double-check the belt was properly seated everywhere, and on my re-check found that the belt was a little off on the underside of the crank pulley, so glad I re-checked it all before I put everything back on and started the car. Like others have noted with the Kartboy pulley there is a whine at about 2500 rpm but since it's a known thing I am not too worried about it. Definitely felt some improvement in the throttle response and acceleration, though it's hard to quantify. I was going to buy a Perrin but picked up the Kartboy for a good deal less at 86FEST, so I am happy with the bang-for-buck factor of this mod. __________________ 86DRIVE Events Calendar

08-19-2013, 05:29 PM	#175
Tim_Asphalt_FRS Is it fast? No. Join Date: Aug 2012 Drives: 2013 Scion FR-S Manual-Asphalt Location: Vista, CA Posts: 604 Thanks: 824 Thanked 164 Times in 122 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	I saw a car at 86fest with the stock pulley and it was shaking way worse than that. Sent from my iPhone using Tapatalk - now Free __________________ 2013 (Rebadged) Toyota GT-86 {Perrin intake tube, aFe dry air filter, custom 2.5" exhaust, PLM overpipe, Kartboy crank pulley, Hotchkis springs, custom Flossy grip tape shorty, TRD shifter, Berk HFC, Whiteline Sway-bars} [Wanted: Delicious Stg 2 tune, Bilstein struts]

10-06-2013, 03:38 AM	#182
Techfl3x Senior Member Join Date: Dec 2012 Drives: Firestorm Red FRS/86 MT Location: So Cal South Bay LA/ 626 Posts: 182 Thanks: 177 Thanked 57 Times in 31 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Thanks for the guide @Enigmus ! Still having trouble with the crank bolt. I was trying to loosen it and thought I was making progress when something gave and had me diving head first into the engine bay. My socket adapter snapped!!! Luckily I caught myself and didn't ding anything. This is one stubborn bolt!, doesn't help with the squishiness of the pulley. While i tough out the night in defeat, Id appreciate any more advice on getting this sucker loose. __________________

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08-17-2013, 10:30 PM	#172
Panman Senior Member Join Date: Jun 2012 Drives: 86 GTS Location: Brisbane Australia Posts: 706 Thanks: 141 Thanked 275 Times in 176 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	If you follow the DIY - you should remember that the tensioner pulley is a LH thread, if you loosened it to remove the belt you are going to need to tighten it again to spec (but bear in mind, LH Thread).

09-02-2013, 03:40 AM	#177
Panman Senior Member Join Date: Jun 2012 Drives: 86 GTS Location: Brisbane Australia Posts: 706 Thanks: 141 Thanked 275 Times in 176 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	Quick question on the alternator pulley if anyone has replaced it with one of the options out there. Does anyone know the size of the nut you need to remove?

09-02-2013, 04:07 AM	#178
VietnamPhenom Member Join Date: Sep 2012 Drives: 2013 FR-S WHITEOUT Location: Aurora, CO Posts: 61 Thanks: 1 Thanked 28 Times in 18 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Its a 24mm nut. If you have an impact gun that is fast enough, it'll zip it off with ease. If not, you'll have to use a chain wrench or something to keep the pulley stationary.

09-09-2013, 03:03 AM	#180
Jolaessss Senior Member Join Date: May 2013 Drives: SWP FR-S Location: San Jose, CA Posts: 620 Thanks: 346 Thanked 172 Times in 114 Posts Mentioned: 24 Post(s) Tagged: 0 Thread(s)	Very nice, I'll be using this guide in the near future!

09-21-2013, 11:16 PM	#181
Sexyeve 86 Fanatic Join Date: Jun 2013 Drives: 2013 firestorm 86 Location: bby Posts: 28 Thanks: 10 Thanked 4 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Good guide ! Just switched my alternator , water pump and crank pulley and I love the way the car feels now.

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