ECS Kit pulley damage

Reply Subscribe

Thread Tools

Search this Thread

Sep 28, 2022 | 12:09 PM

mn_vette

Thread Starter

Melting Slicks

Joined: Jan 2002

Posts: 3,293

Likes: 79

From: Jackson MI

ECS Kit pulley damage

Hello, I've had my ECS supercharger kit on the car for about 1.5 years, two driving seasons up here in Michigan. Poking around under the hood I noticed the tensioner pulley has a groove in it. This seems to be lining up with the edge of the belt and the outer edge of the crank pulley. I'm wondering if anyone else has seen this. The belt has never broken or been taken off. Could it really be getting enough bounce in the belt loop to hit the crank pulley?

Sep 28, 2022 | 06:55 PM

russ472

Burning Brakes

Joined: Mar 2014

Posts: 1,238

Likes: 203

From: Lexington South Carolina

you need to tighten your belt. your belt has stretched and the spring tensioner is loose enough to slightly bounce off the crank pulley.

Sep 29, 2022 | 03:51 PM

mn_vette

Thread Starter

Melting Slicks

Joined: Jan 2002

Posts: 3,293

Likes: 79

From: Jackson MI

Quote:

Originally Posted by russ472

you need to tighten your belt. your belt has stretched and the spring tensioner is loose enough to slightly bounce off the crank pulley.

Thanks for the feedback. I'll check it the adjustment. It may be time for a new belt.

Sep 29, 2022 | 05:42 PM

DOUG @ ECS

Premium Supporting Vendor

Joined: Oct 2004

Posts: 23,599

Likes: 1,224

From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321

That's odd because it should stop right before hitting the balancer even if the belt broke.

Oct 12, 2022 | 09:50 PM

slow_vettec6

Burning Brakes

Joined: Nov 2018

Posts: 767

Likes: 53

Quote:

Originally Posted by DOUG @ ECS

That's odd because it should stop right before hitting the balancer even if the belt broke.

Sorry to hijack the tread but mine hits the balancer when the belt is not installed. The tensioner only fits in one position in my case. I noticed my 6 rib tensioner did not hit but my HD 8rib setup hits.

Apr 10, 2023 | 09:07 PM

mn_vette

Thread Starter

Melting Slicks

Joined: Jan 2002

Posts: 3,293

Likes: 79

From: Jackson MI

Quote:

Originally Posted by DOUG @ ECS

That's odd because it should stop right before hitting the balancer even if the belt broke.

Wanted to close the loop on this, I got around to changing the belt as part of the winter maintenance and the ID of the old belt is definitely longer than the new belt. Same part number, same belt. So there must have been enough wear or stretching to make a difference.

My tensioner does hit the crank pulley when there is no belt on there. I have to pull the tensioner out of the way to route to get the belt to lay on the crank pulley correctly before routing it to any of the other pulleys.