paladineWS6

Hi guys well aparently last week a valve seat fell in the piston and it smashed it into the head and made a hole in the piston. So since the heads were off I put in new prc 650 dual valve springs with titanium retainers (wanted btr but tthese were 200 dollars shipped), manley raceflo 2.02 intake, and 1.575 exhaust valves, "hidden power" lifters (couldnt find ls7's :/ ) and the heads were fixed and the mechanic put a new piston. Well before the car would be smooth at idle, it has a tourquer v2 cam and it shook a bit. Lets put it this way, the shifter would vibrate lightly at idle, but now the engine is ticking loudly (just got the car and the mech said to take it for a couple of days to let it settle and the ticking should leave) well the shifter vibrates violently now and the idle is a lil rougher, the engine when driving feel much more stressed id say it feels like its accelerated like 2k rpm feels like 3k rpm now so what I want to know is before when I tuned the car maybe the valve train was so bad that now that it has a better valve train the tune has to be updated? Or did these guys do something wrong to the engine so my question is should in take it back to make them fix it or should I get another tune? Ill try to post pics of before and after ofnthe heads also the mechanic said the old valves were installed bad and never fully closed the whole way

paladineWS6

DietCoke

iTrader: (18)

find a new mechanic.

Mike_hawk

Is it throwing any codes? That head looked pretty messed up, do you have pictures of it when it was fixed? I would check to make sure that cylinder is firing, the easiest way is to start it and touch the primary tube(header) to see if it isn't hot like the others. Or unplug the spark plug and see if it changes anything. Or the best way would be to do a compression test and compare it to a few other cylinders.

paladineWS6

Tell me about it and hmmm awesome idea!! Im going to work now and imma take the car and now pass is past 3k rpm when I get there im going to quickly touch each to see if one isnt hot most likeky the one that was fixed right? And ill check for codes when I get to work if my lil obd2 bluetooth thing works

96capricemgr

iTrader: (1)

What caused the dropped seat?

paladineWS6

Aparently this mechanic said head makes the aluminum head expand and they didnt properly install the seat which all sounds like bs because of enough head warped the head enough for the seat to fall then that head is useless right? And I got a new code checking the codes ill post the vid now of when I got to work but I forgot to touch the headers because I was taking a video and checking the codes

paladineWS6

Okay here it is

paladineWS6

paladineWS6

Horrible sound you cant hear the engine the exhaust is loud I hear more cam than anything lol tomorrow im installing some cats so maybe it will quiet down its most likely a misfire from that bad coil if it is a bad coil maybe the mechanic missed a ground?

.boB

iTrader: (1)

When you drop a solid object into the cylinder, it's kind of like filling it with water. That object gets mashed between the piston and the head, that's how the hole got there. That force is transmitted down through the rod and into the crank.

You should also have replaced the rod and bearings, and checked the crank for straightness. Did that happen?

Rough operation like that can come from something as simple as a plug wire that's not connected properly, to a bent crank.

Been there, done that.

Russ K

iTrader: (1)

P0351 needs to be diagnosed first, as it will cause a misfire on cylinder #1. Might be a bad coil, just swap it with #3 coil, clear the codes and see if a P0353 sets. If the code is still P0351, you will need ALLDATA to test the ignition coil circuits.

The P0121 code is very common with a cam, in the tune you need to change the P0121 error max to 100 kpa & the min to 0 kpa.

Russ Kemp

paladineWS6

Thank you russ I will try that tomorrow when I have access to my tools and wooooow tbats some serious damage but ko I dont think this whack *** mechanic did check I think he just sent heads tk the shop to get fixed and install valve train and then fixed the piston amd installed heads thats it

paladineWS6

Switched 1 coil with 5 coil and it had the same p0351 code so maybe its the wire or ground? Should I buy and use carb cleaner on the coil and see all the wires and look for a pinched wire or something?

Russ K

iTrader: (1)

Here is the diagnostic procedure for P0351.

Russ Kemp

paladineWS6

Thanks ill try this out tomorrow and let you guys know wwhat happens

gagliano7

Take an infrared temp gun and check temp at each exhaust primary. The ones that have a lower temp by a good amount aren't firing. I would also make sure they connected all grounds.

paladineWS6

So I went to the shady *** mechanic and he was telling me some story about how my car doesn't have knock sensors because the cam it has isnt from mine and then he said that its probably that thats no knock sensor is sending a bad reading to the pcm making the p0351 code come out then he said lets try changing the sparkplug out the ******* ******* I had a feeling he was a thief he went and took an old looking tr6 plug from the car and put in out of his own "generosity" a breand spanking new tr6 spark plug in the car.... when I gave him the lifters forthe car I bbought 8 new tr6 and gapped them each to .45 i think this ******* kept the new ones and left the old ones in the car imma take 4 plugs out and check the gapping for the one he put in and the gaooing for the other 3 I know stock the tr6 are like .30 or 35 so if theyre not all at .45 im going to be super angry if be did do this how do I know he didnt even put the lifters I bought in or maybe the valves in the heads aren't the mankeys I bought? Just cause of plugs I suspect he coukd have done this with all the parts I gave him if you see the picture aboue with the new heads some of those valves tips look dark and the valve looks scratched I dont know anymore im stressed with this car

KCS

iTrader: (20)

I'd bet the sleeve is cracked in the cylinder that dropped a valve.

paladineWS6

If that were the case would it show that coil 1 has p0351 the cylinder that was messed up was #3