High Knock in my Talon

[Kracka]

Who knows, maybe they'll give you a break on price or something if you do it all in one shot.

[Halon]

Well, figured I'd revive this thread yet again. Just got the new head on. I have the revised lifters in there. Still getting my phantom knock. Again it's only when I'm below like 3500 RPM. I am set at like 16-17psi because I can't get it any lower. I have a half & half mix of 91 & 110 or whatever it is that they sell at the Mobile1 station. I have new lifters, tried the MCCC cleaner, replaced the knock sensor, base timing is set to 5, brand new head from FFWD, fixed about 95% of my exhaust leaks, I've tried richening it up with my SAFC, Rotella-T oil in it, nothing seems to be working. I can still here a little ticking when the engine is idling. I have no idea what it is, but I can hear it slightly. I am going to try retorquing the Knock Sensor again. What size socket does that take? And I think someone in here said it should be torqued to like 6? Is that right? Do I need to use teflon or anything on the threads?

[Halon]

Well to answer my own question, the knock sensor is a 24mm for anyone else who cares. I don't have a spare socket to cut a slot in for the wire, so I just played with tightening and loosening it with a normal wrench, and also put a washer on it as I heard other people had luck with that. Now it's a little better, but it's still there none the less. I found I have a pretty good exhaust leak at the o2/downpipe flange that I thought I fixed months ago, but I guess not. I'm going to fix that, hopefully that will quiet things down a little. I doubt that will fix it, but I feel it's worth a shot, plus it'll quiet the car down a little which is always nice!

[A//// Guy]

Are you positive that your timing is all aligned correctly? I had knock at times when my timing was off a tooth.

I dont know, if the head is brand new and it still knocks maybe your ecu isnt reading it correctly or some other electrical gremlin is causing it to read knock? Try swapping ECUs if if comes down to it.

[Halon]

Thanks Peter. Yes I'm sure the timing is all lined up correctly. The ECU has also been refreshed a few months ago by steve on DSMTuners. Also I just put in a brand new O2 sensor as well. I really am confused on this one now.

[Shane55113]

Figure it out?

[Halon]

No. I'll be putting in a new motor this winter, so hopefully that will cure it. I've tried everything else. I am completely stumped.

[Shane55113]

gehy, question: was it hard to do the lifters? and advice? i have to do this too because i'm getting real bad knock, and i am getting it sometimes not under load or boost around 3k.

On a side note, does your car have high miles and stock pistons (no rebuilds)? i have heard of piston slap which can apparently set off your knock sensor, but it rare'ish

[Halon]

My car has about 110 on it, stock block. Lifters are fairly simple, just make sure you compress them before you put them in.

[Halon]

Well after going crazy over this ever since the first day I bought me car, my knock issues now seem to be gone. After switching to E85, and using an intake that places the filter by the stock SMIC location, I have not been seeing tons of knock anymore. Yaay!!