Re: Pinging issue - Saab Performance Bulletin Board - Saabnet.com
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Re: Pinging issue
Posted by SWEDISH DYNAMICS [Email] (more from SWEDISH DYNAMICS) on Sun, 2 Oct 2005 15:47:21
In Reply to: Pinging issue, Aerohead
[Profile/Gallery]
, Sun, 2 Oct 2005 04:19:12
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Aerohead,
Hope all's well!
Your detonation at early red (12-13 psi)would not seem to be due to a lean fuel condition or timing advance (you might attempt to target base ignition timing to 17 or 16dbtdc to see if symptoms improve, however) with the modifications currently installed and functioning properly.
Make certain that you are only working with an NGK spark plug BCP-6ES or BCP-7EV as alternatives tend to cause issues similar to the one you make mention of.
Other potential culprits include: carbon deposits on cylinder head combustion chambers or a newly machined cylinder head deck/face as this may leave sharp edges on combustion chambers (sharp edges may heat quickly under forced induction and cause similar symptoms as mentiond) and would also increase the engine's compression ratio.
Best of luck and regards,
Gary K at SWEDISH DYNAMICS,INC.
SAAB PERFORMANCE PARTS
http://swedishdynamics.saabnet.com
Posts in this Thread:
- Pinging issue, Aerohead
, Sun, 2 Oct 2005 04:19:12- Thanks, very good information!!!!!!, Aerohead
, Mon, 3 Oct 2005 07:23:22 - Re: Pinging issue, Barry, Sun, 2 Oct 2005 20:45:22
- Re: Pinging issue, LarryB, Sun, 2 Oct 2005 16:00:25
- Re: Pinging issue, SWEDISH DYNAMICS, Sun, 2 Oct 2005 15:47:21 <-- Viewing This Message
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