Port engine squeal

Reply Subscribe

Thread Tools

06-08-2012, 08:10 AM

#11

mike tkach

Registered

iTrader: (3)

Join Date: Oct 2007

Location: yorkville,il

Posts: 8,427

Likes: 112

Received 87 Likes on 49 Posts

paul,you said it was doing it before the valve springs were replaced,but it sounds like maybe one of the rocker arms is rubbing against a valve cover.i would remove the valve covers and look for any marks from rubbing.usually two rocker arms on each side are clearanced ,if they did not get put back in the right place,they will rub,as rookie mentioned,if you loosen the valve cover bolts,and the sound changes,you have found the problem.

06-08-2012, 09:50 AM

#12

spyderconv1999

Registered

Join Date: Sep 2009

Location: ohio

Posts: 271

Likes: 0

Received 0 Likes on 0 Posts

what does it do at higher RPMs? get louder? faster? stop?

06-08-2012, 09:53 AM

#13

jbones98

Registered

Join Date: Dec 2009

Location: orange county, ca

Posts: 29

Likes: 0

Received 0 Likes on 0 Posts

and fuel pump i have heard fuel pumps make that noise

06-08-2012, 03:31 PM

#14

Rookie

Registered

iTrader: (4)

Join Date: Jan 2003

Location: Grand Rapids, MI

Posts: 5,699

Likes: 438

Received 1,207 Likes on 580 Posts

Quote:

Originally Posted by Rookie

Do not know if your valve covers need the clearanced rocker. But it sounds like mine did when I put my new rockers on and just didn't clear enough material on the corner. I loosened the valve cover bolts and I could see it move as the rocker went up and down.

Rockers on cylinders #1 and #8 intake need to be ground.