Thread: KR.... Educate me please

Originally Posted by Cymaro

Is part of that false knock? I'm totally stock now (besides poly motor mounts) and just cruising today on the interstate at 70-75 mph I will get knock readings of 2-3 when I'm going up a small incline still in 4th gear. My vacuum gets close to -1 or 0, so to me it seems like the engine is lugging and won't shift to 3rd. Is that what is causing that knock? Brandon, you might want to get some solid motor mounts to stop you engine from moving around so much. I could see you driving at 40mph, flooring it and going into 2nd WOT, could cause a lot of engine movement.

Your KR is likely real. If you get into the throttle a little more, you'll actually build some boost before the car will downshift, especially if you don't have the performance shift option/it's turned off. It's the engine being loaded up. Lugging is not a bad way to put it. You aren't likely to be in PE, so 14.7:1 while having even a small amount of boost is not good.

That all said, a degree or two of KR on a stock car usually isn't the end of the world... these cars almost all have knock from the factory.

Originally Posted by Cymaro

Is part of that false knock? I'm totally stock now (besides poly motor mounts) and just cruising today on the interstate at 70-75 mph I will get knock readings of 2-3 when I'm going up a small incline still in 4th gear. My vacuum gets close to -1 or 0, so to me it seems like the engine is lugging and won't shift to 3rd. Is that what is causing that knock? Brandon, you might want to get some solid motor mounts to stop you engine from moving around so much. I could see you driving at 40mph, flooring it and going into 2nd WOT, could cause a lot of engine movement.

these cars knock bone stock. i had 8* kr when i was stock. and yup high kr kills the timing advance, and the car falls on its face hard.

it needs to be tuned. case closed. move on nothing more to see here.


till some mods get tossed on.