Just wondering. I am having some part throttle and full throttle detonation at anything over say 12lbs. I've read about people w/ 6-12 of knock retard. Can't you hear detonation at that level? I have a 86 SVo thats made "lots" of quarter mile passes w/ the knock sensor disconnected(too sensative). If i hear any pinging I let up. No head gasket problems,,,yet! I know I need a scan tool for the buick(getting one soon!) so I drive it real easy. FYI, 86 GN w/ 42.5's, 342 pump, red's 93 chip, EP front mount, 62mm throttle boby, TA-49 on 93 octane. No detonation w/ 100 oct unleaded. Any input appreciated.
when you hear detonation/how much knock retard?
- Thread starter Ross L
- Start date
TT/Ameasap
The White Blur
- Joined
- Jan 31, 2002
What chip are you running?
Kevin Turch
Senior Member
- Joined
- Mar 8, 2002
If you can hear it, its wayyyyyyy to much 
Kevin
Kevin
You should be at 42 or 43 psi w/009's. Tune for 0 KR first and foremost. Tuning to O2's w/ 009's suck. I have tuned mine to run 18 boost w/42 psi line off. I have 0 KR. O2's in high 800's to low 900's but if I turn down the fuel pressure at all I start to get KR. I have been up and down the boost and fuel pressure ladder. I think that tuning to O2's is not reliable. That is why I am switching to a ME and an EGT gauge.
Just my experience.
Just my experience.
TT/Ameasap
The White Blur
- Joined
- Jan 31, 2002
No, you cant use the stock chip.
Check inlet pipe and intercooler for oil
Check inlet pipe and intercooler for oil
The amount of detonation at which you can hear it depends on your experience with these vehicles. Someone who has never owned a vehicle prone to detonation may not hear it until its in the double digits. Others with keener senses may pick it up at half that value. Regardless, as one person stated, if you can hear it it's bad...really bad.