Re: How loud/obvious should actual knock be? - Saab Performance Bulletin Board - Saabnet.com
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Re: How loud/obvious should actual knock be?
Posted by Marko A (more from Marko A) on Thu, 9 May 2002 15:17:12
In Reply to: How loud/obvious should actual knock be?, Chad B, Thu, 9 May 2002 15:11:53
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When APC is working correctly, you should not hear any knock.
But, sometimes you might hear metallic "hammering" sound and that´s usyally close to 3000rpm, high boost, very high engine load, it´s normal according Saab manual.
Also, the worst one, high rpm knocking is of very high frequenzy. 10KHz-15KHz, so with all the other engine noises, it´s mostly out of human hearing.
Marko
posted by 212.50.192...
Posts in this Thread:
- Lots of gas,too much timing and still knocking at 15psi, Chad B, Thu, 9 May 2002 10:50:46
- carbon?, MS, Fri, 10 May 2002 04:15:00
- Re: Lots of gas,too much timing and still knocking at 15psi, Kevin K , Thu, 9 May 2002 14:07:30
- Re: Lots of gas,too much timing and still knocking at 15psi, Brad, Thu, 9 May 2002 11:57:17
- Few things..., Eric Law, Thu, 9 May 2002 11:14:35
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