knock question's - SRT Forums

milkman102299 · 11-02-2009, 01:00 AM

I know most of my prob is the SAFC. I am at 18psi without meth and run 28* of timing. I see 2 degree's of knock on 91 octane where I live. Reading dusters thread this is nothing to worry about. Now on 22psi 91 octane at 11.6-11.9 afr with meth 50/50 mix, the car get up to 8kr at 5500 then I back off. Timing drops below 20* with the kr that high. I through in some c16 and went to the track with the same kr problems. I cant seem to figue out what is causing the knock. The MAP voltage is correct. After a hard pull where I see higher KR, I then notice part throttle KR of 2 in third and 4th gears. Any idea's what my problem is. I am going to re'tq the knock sensor tomorrow and see if this does anything.

P.S. One day an actual tuning solution will happen. My concern is at the track I have only been able to acheive a trap of 119 at best in the 1/4 with is only 4mph more than my best on the stock turbo setup. Something just seems way off for my mods.

milkman102299 · 11-02-2009, 05:33 PM

noone huh

milkman102299 · 11-03-2009, 02:12 AM

bump bump

Adionik · 11-03-2009, 02:45 AM

What plugs you running? Very weird that the race gas didn't fix the KR. I'd say it's time to start looking at hardware

milkman102299 · 11-04-2009, 01:26 AM

yea I have a feeling its the knock sensor. been on the car through 2 engine rebuilds. And is the original sensor.

lyncoo · 11-04-2009, 01:33 AM

have you tested your meth kit to see if its coming on

milkman102299 · 11-04-2009, 06:14 PM

Meth kit turns on with no problem. The Knock sensor was only tq'd to 120 inch pounds. thats abot 76 short. so I got it on there a little tighter with my tq wrench. havent drove it yet. Will update when I take her out.

milkman102299 · 11-04-2009, 06:42 PM

That was it. not tq'd properly. took it on the road and got 0KR on 18psi with 91 octane. At 22psi with meth again 0 KR. Now time to retune the car for the good knock reading and get my power back.