HSPN TV: How-To / Install - Perrin Lightweight Crank Pulley - Page 2

**Ben** · 09-26-2006, 05:49 PM

Thanks!

DuckStu · 09-27-2006, 02:42 PM

Question

There are issues with other cars (my BMW 3 serries for instance) where replacing the stock pulley causes crank dammage long term.

I hear this is not the case on the Subies. Is it true that the stock pulley does not act as a dampener? Of course it will still act like a dampener to some degree in that it has mass, but if it is just a heavy and evenly weighted pulley then installing a light weight one shouldn't be an issue.

Any educated opinions on the matter? The only thing I have herad so far is "We've sold xxxxx of them and haven't heard of any issues etc"

04subie · 09-27-2006, 04:16 PM

Quote:

Originally Posted by DOMIN8

Nice job Ben,,,, Good job on the video!!

I agree..

0bluesti4 · 09-27-2006, 06:29 PM

Yet another great video! I have watched all of them and they all rock!

I wonder if you could just use a parking brake to keep the car from rolling instead of having someone apply the foot brake?

I am also wondering why there are only lightweight main pulleys that everyone makes? Wouldn't you want to replace the alternator and power steering pulleys as well?

**Ben** · 09-27-2006, 06:39 PM

With the parking brake on and a stopper behind the rear wheel I ended up rolling the car OVER the stopper when trying to break the pulley bolt. You might be able to do it, but I would recommend a foot on the brake.

Chris05STi · 09-28-2006, 03:49 AM

Great job on the How To video on the Perrin Crank Pulley!! I have done the same thing on my friend's cars!!! I have the same one on my car for over 10,000 miles with zero problems/issues. It takes the bog outta 1st gear, and the revs do come up quicker than norm. I must confess, I watch these videos all the time at work, over and over again...I just love them! Great vid on the Perrin Wing Stiffys!!! 5 of them would make the STi look like the WRC one! Shouldn't litter blue painters tape on the sidewalk though

. Can't wait to see the F430 video!!!

ACHAHockey · 09-28-2006, 04:02 AM

Awesome video! I jsut installed mine about a week ago, and now i see this video haha. Great job guys keep it up.

06_AspenSTI · 10-03-2006, 08:40 PM

I come from a Honda background. The similar mod/install on B-series motors is to remove the power steering and AC so only the timing belt is being turned by the crank pulley and replace the stock pulley with the CTR crank pulley. The problem with that is the OE crank pulley was also a harmonic balancer. It had rubber injected into it to absorb some of the engine vibrations. The CTR crank pulley didn't contain injected rubber and the theory is that it doesn't aborb the vibrations and wears down the bearings quicker. Now with all that said, is this the same for the STI? If the OE crank pulley doesn't contain inject rubber, is it because it's a boxer motor and the pistons move horizontal instead of vertical? Any clarification on this would be well appreciated. Thanks

Rockyxxx1 · 10-30-2006, 10:32 AM

The Subaru boxer engine is internally ballanced and does not require a harmonic balancer to absorb excess vibration. The pully has a certain amount of mass, as does the fly wheel and that is to increase driveability because with the lighter pully and lighter flywheel, the engine spools down very quickly when you take your foot off the gas. On the highway that is rather uncomfortable and unless you have the cruise control on your speed tends to vary greatly. In city driving scenarios that is not AS noticeable but you do feel it. It does increase acceleration and performance.

BlackedoutSTI · 04-14-2007, 04:44 AM

i'm about to go install my perrin pulley and I went to watch the video but it stops everytime when ben puts the breaker bar with 22 mm socket on the pulley to take it off. So what am i sopposed to torque the pulley bolt to? like 120 ft lbs?

sfe · 04-14-2007, 06:13 AM

Quote:

Originally Posted by BlackedoutSTI

i'm about to go install my perrin pulley and I went to watch the video but it stops everytime when ben puts the breaker bar with 22 mm socket on the pulley to take it off. So what am i sopposed to torque the pulley bolt to? like 120 ft lbs?

Install the crankshaft pulley
1) Install the crankshaft pulley.
2) Install the pulley bolt.
To lock the crankshaft, use:
ST 499977300 CRANKSHAFT PULLEY
WRENCH
(3) Clean the crankshaft pulley thread using an
air jet.
(4) Apply engine oil to the crankshaft pulley bolt
seat and thread.
(5) Tighten the bolts temporarily with tightening
torque of 44 N·m (4.5 kgf-m, 33 ft-lb).
(6) Tighten the crankshaft pulley bolts.
Tightening torque:
127 N·m (13 kgf-m, 94.0 ft-lb)
7) Confirm that the tightening angle of the crankshaft
pulley bolt is 45 degrees or more. If not, conduct
the following procedures (1) through (4).

***Datadatum*** · 11-25-2007, 10:58 AM

Thanks for the video guys - worked out well.

Gek · 11-28-2007, 10:57 PM

This is the first time I have removed an engine belt and I am wondering what is the best way to tell when there is enough or too much tension when you tighten the alternator back? Its been a day since I pulled the belt off and I have a vague memory of the stock tension. I just tried to match the feel of the tension of the other belt which I have not made any changes to. Thanks for any pointers.

***KarlSTI*** · 12-23-2007, 11:27 AM

Just did the install....took 1/2 hour. The belt tension is hard to know IMHO....I pushed down on them before I removed them and could deflect them 1/4-1/2 inch. So that's where I left them....more or less....

Chris05STi · 12-23-2007, 02:07 PM

Tip on tension of the belts: You should be able to twist the belt only 90 degrees when it should stop twisting, that is the tension you want

.

09-26-2006, 05:49 PM	#16
Ben Retired Admin Car: 2006 Audi S4 Fav Mod: Weight Loss Location: Los Angeles, CA Posts: 2,814 Join Date: Dec 1969 Trader Rating: (11)	Thanks! This ad is not endorsed by this member. Please register or login to hide this ad.

11-25-2007, 10:58 AM	#27
*Datadatum* 100% More Wingless Car: 05 STi + 08 OBXT Fav Mod: baby seats Location: Jacksonville, FL Posts: 5,223 Join Date: May 2004 Trader Rating: (0)	Re: HSPN TV: How-To / Install - Perrin Lightweight Crank Pulley Thanks for the video guys - worked out well.

11-28-2007, 10:57 PM	#28
Gek Lurker Car: Blue 07 Fav Mod: Kartboy SS Location: Texas Posts: 1 Join Date: Nov 2007 Trader Rating: (0)	Re: HSPN TV: How-To / Install - Perrin Lightweight Crank Pulley This is the first time I have removed an engine belt and I am wondering what is the best way to tell when there is enough or too much tension when you tighten the alternator back? Its been a day since I pulled the belt off and I have a vague memory of the stock tension. I just tried to match the feel of the tension of the other belt which I have not made any changes to. Thanks for any pointers.

12-23-2007, 11:27 AM	#29
*KarlSTI* Titanium Member Car: 05 CGM STi Fav Mod: Modified Stock Heat Shield Location: Neptune Bch, FL Posts: 3,720 Join Date: Mar 2005 Trader Rating: (1)	Re: HSPN TV: How-To / Install - Perrin Lightweight Crank Pulley Just did the install....took 1/2 hour. The belt tension is hard to know IMHO....I pushed down on them before I removed them and could deflect them 1/4-1/2 inch. So that's where I left them....more or less....

12-23-2007, 02:07 PM	#30
Chris05STi I Has a Turbo Timer Car: 2005 Subaru WRX STi Fav Mod: Every single one! Location: NJ Posts: 8,867 Join Date: Jun 2005 Trader Rating: (19)	Re: HSPN TV: How-To / Install - Perrin Lightweight Crank Pulley Tip on tension of the belts: You should be able to twist the belt only 90 degrees when it should stop twisting, that is the tension you want. This ad is not endorsed by this member. Please register or login to hide this ad.

09-27-2006, 02:42 PM	#17
DuckStu HowTo Contributor Car: 04 Subaru STI Fav Mod: More power Location: Detroit, Michigan Posts: 166 Join Date: Sep 2006 Trader Rating: (0)	Question There are issues with other cars (my BMW 3 serries for instance) where replacing the stock pulley causes crank dammage long term. I hear this is not the case on the Subies. Is it true that the stock pulley does not act as a dampener? Of course it will still act like a dampener to some degree in that it has mass, but if it is just a heavy and evenly weighted pulley then installing a light weight one shouldn't be an issue. Any educated opinions on the matter? The only thing I have herad so far is "We've sold xxxxx of them and haven't heard of any issues etc"

09-27-2006, 06:29 PM	#19
0bluesti4 Senior STI Driver Car: 04 STi WRB Fav Mod: red interior lights Location: Santa Barbara, CA Posts: 312 Join Date: Aug 2006 Trader Rating: (0)	Yet another great video! I have watched all of them and they all rock! I wonder if you could just use a parking brake to keep the car from rolling instead of having someone apply the foot brake? I am also wondering why there are only lightweight main pulleys that everyone makes? Wouldn't you want to replace the alternator and power steering pulleys as well?

09-27-2006, 06:39 PM	#20
Ben Retired Admin Car: 2006 Audi S4 Fav Mod: Weight Loss Location: Los Angeles, CA Posts: 2,814 Join Date: Dec 1969 Trader Rating: (11)	With the parking brake on and a stopper behind the rear wheel I ended up rolling the car OVER the stopper when trying to break the pulley bolt. You might be able to do it, but I would recommend a foot on the brake.

09-28-2006, 03:49 AM	#21
Chris05STi I Has a Turbo Timer Car: 2005 Subaru WRX STi Fav Mod: Every single one! Location: NJ Posts: 8,867 Join Date: Jun 2005 Trader Rating: (19)	Great job on the How To video on the Perrin Crank Pulley!! I have done the same thing on my friend's cars!!! I have the same one on my car for over 10,000 miles with zero problems/issues. It takes the bog outta 1st gear, and the revs do come up quicker than norm. I must confess, I watch these videos all the time at work, over and over again...I just love them! Great vid on the Perrin Wing Stiffys!!! 5 of them would make the STi look like the WRC one! Shouldn't litter blue painters tape on the sidewalk though . Can't wait to see the F430 video!!!

09-28-2006, 04:02 AM	#22
ACHAHockey Spec C Club Car: Bugeye, '95 Porsche Fav Mod: Fabspeed Location: Buffalo, NY Posts: 1,734 Join Date: Jun 2006 Trader Rating: (3)	Awesome video! I jsut installed mine about a week ago, and now i see this video haha. Great job guys keep it up.

10-03-2006, 08:40 PM	#23
06_AspenSTI Lurker Car: 06 Subaru WRX STI Location: Renton, WA Posts: 1 Join Date: Oct 2006 Trader Rating: (0)	I come from a Honda background. The similar mod/install on B-series motors is to remove the power steering and AC so only the timing belt is being turned by the crank pulley and replace the stock pulley with the CTR crank pulley. The problem with that is the OE crank pulley was also a harmonic balancer. It had rubber injected into it to absorb some of the engine vibrations. The CTR crank pulley didn't contain injected rubber and the theory is that it doesn't aborb the vibrations and wears down the bearings quicker. Now with all that said, is this the same for the STI? If the OE crank pulley doesn't contain inject rubber, is it because it's a boxer motor and the pistons move horizontal instead of vertical? Any clarification on this would be well appreciated. Thanks

10-30-2006, 10:32 AM	#24
Rockyxxx1 Lurker Car: 06 Subaru WRX STi Fav Mod: Short ram intake. Love the WHOOOOOSH Location: Houston, Texas Posts: 7 Join Date: Oct 2006 Trader Rating: (0)	The Subaru boxer engine is internally ballanced and does not require a harmonic balancer to absorb excess vibration. The pully has a certain amount of mass, as does the fly wheel and that is to increase driveability because with the lighter pully and lighter flywheel, the engine spools down very quickly when you take your foot off the gas. On the highway that is rather uncomfortable and unless you have the cruise control on your speed tends to vary greatly. In city driving scenarios that is not AS noticeable but you do feel it. It does increase acceleration and performance.

04-14-2007, 04:44 AM	#25
BlackedoutSTI STI Driver Car: 06 STI Fav Mod: Ultimate Racing GT30R, Kartboy F+R shifter bushings Posts: 250 Join Date: Aug 2006 Trader Rating: (2)	i'm about to go install my perrin pulley and I went to watch the video but it stops everytime when ben puts the breaker bar with 22 mm socket on the pulley to take it off. So what am i sopposed to torque the pulley bolt to? like 120 ft lbs?