Ok all you guys should by now know what motor I have if youve been here and or Thridgen.org well thirdgen is toast right now so I need some help.

Im getting massive detonation at 4 grand and above. Its like a hit a rev limit or something and its start to dump fuel out the pipes.

I have no clue why its doing this.....if you guys kept up with all the problems and the stroker rebuild I had to do cause I cooked all the bearings and crank in my first bottom end cause of the oil pump and pick up tube.......this should be nothing new ..LOL...the motor gods just dont want me to have any fun...well I paid $1400 to have my bottom end fixed and I dont want to screw this one up...

Well the motor is exactly like it was before the rebiuld and I didnt get any kind of Detonation before. WHy am I getting it now?

Ive mess with timing and my fuel pressure but it still does it...

My fuel is set to 43psi whch is what Jamy at LSRacingchips.com says to set it at.

The motor is setup just like it was before all the wires are right where they should be...nothing has changed.
The only thing different that I know of was the cam is now set according to the cam card...I had it retared 1* SO that shouldnt even be noticable to me. and also I reused my head gaskets which were Felpro 1003's...the engine guy says they were fine ut jut to make sure they sealed ok...had me put a real like coat of that copper spray tack...other than that everything is the same....same plugs as I had in the first motor, they looked fine and still do ...Ive pulled 3 of them and they were a light tan color..

So why am I getting detonation...or spark knock and something....hell I dont know what it is...but once I get to 4000 or more it starts popping and sputtering and dumping fuel out the back so my friends say cause he was behind me and said the smoke was black and the tack goes haywire an starts bouncing from 4 to 7 grand.....

I need help!


if you need to know anything about the motor or anything just ask away!!

I would really like to get this fixed and I dont want to take it somewhere...and have somebody dick around with my car. Ive put to much time, money, headaches and heartaches into this...I want it right!..and want it right now!...LOL

so please help me out if you can!

 

My stuff is also all MSD...Upon startup...the "one way" 2 wire plug that goes into the distributor...it was wired backwards from the factory...car wouldn't rev past 3 grand...

just a thought...a local shop found the problem and said it was something to always check from now on. Not sure if that's relevant, goodluck!!

 

nah.....my box was sent back a few months ago to have it checked out....along with the adapter wire.

 

The detonation and tach bouncing should give it away - ignition controller. MSD makes a lot of good ignition components, but their boxes are crap! If I were you I would just wire the distributor directly eliminating the MSD (I don't care what MSD says about the box's integrity) and recheck...

 

I have MSD everything!......could it be that the ICM on the distibutor is bad? and that is why when I go to set timing and disconect the ECT plug nothing changes?