Acceptable knock retard????

[im4darush]

I am wodering if the level of retard I am seeing is acceptable, or if I should keep working to get it down to zero. My car is pushing 25lbs right now out of a ta49. I am running a TT alky chip and razor's kit. Under load, I will register about 1.8 (or so) of retard at WOT. Under load meaning in 2nd or 3rd from a downshift. Not from a dig in first. The alky kit is not maxed out, so I still have some room to ramp it up. Just wondering if the retard I am seeing is anything to be concerned about, or if it is minimal.

My other question has to do with plugs. Currently I am running the 44's and I understand the 43's or even the 42's would be much better at these boost levels. The car runs great, so I would like to know if there is a chance of causing any damage with the 44's (more knock), or if going to the 43,42's is just better for performance.

Thanks

 

[notacarlo]

Transitional knock is what you are describing. The kickdown will likely jar something and register knock - even if it is the load change. If it goes away immediately, it's most likely false.

25 psi, would go with 42's at .032

 

[8UWITH6]

At your boost level I would run AC CR43TS or NGK 2771's at a tight 30 gap. I dont like to see any knock w/ pump gas and alky, but your knock seems like it could be false. What kind of timing are you running?????????

 

[TurboDave]

At that boost level NO knock retard is acceptable.

 

[Dwayne]

At that boost level NO knock retard is acceptable.

+1

 

[im4darush]

The retard on downshift is a strong possibility as I can only pull it up with the recall button, and dont think it is there when in gear and under boost. Tough starring at the scanmaster under 25 lbs........trees everywhere

I have read many times about the need for a colder plug. Am just trying to understand the theory behind it.

 

[Ross L]

you're letting the car down shift under WOT @ 25psi? I've never done that. I was under the impression that you make a pull in third and watch o2's and KR. No amount, as others have said, of retard is ok at 25psi. Turn that alky up

 

[im4darush]

Car is not downshifting at 25psi, but when put your foot into it at a 55 mph cruise, the boost comes up pretty fast when the car kicks down to a lower gear.

 

[Ross L]

Ahhhhh, thats better. You might put in a few gallons of race gas along with the alky, see if that clears it up. If yes, add alky. If no, could be false knock. I like to tune WOT in third gear. Wayyyy too much going on in first and second to watch the scanmaster
Ross