Shot out a spark plug at 7,000 rpm

[snakeraper11b]

Getting on the highway last night, I'm walking an Si and at the top of 3rd gear my car instantly started sounding like a lawnmower and lost power. I had to drive about 1/4 mile to a turn out. Poped the hood, started it for a second, the cop cover was lifting on the passenger side, I knew I spit a plug. $140 tow later, I get home and park it. Pulled cover to find this.

Should have just left it parked for the damn winter...

 

[01yellercobra]

Sucks to have happen. But at least it's an easy fix with the right tool.

 

[slonech]

been there..... twice. spit a plug out, had a shop do a helicoil and it spit out within a week. pretty sure it wasn't done right since other people have not had issues, so I finally just got new heads and said forget it.

 

[P49Y-CY]

hey man, this is chris who you bought that 03 cobra pumpkin from a couple years ago. search my posts, this happened to me last year and I was able to fix it myself with the right tool (lock-n-stitch)

 

[shurur]

Time-sert is another one..but I think the lock-n-stitch uses metal inserts (vice AL) that don't expand and contract with the head....as I recall....anyone??

My DT still isn't set up...

 

[01yellercobra]

I don't know the difference. I have the Timesert in mine. No issues after a couple thousand miles. I was thinking of doing the rest when the heads come off.

 

[Zemedici]

just tap it son. Helicoil, aint no thang but a chicken wang.

hehe....wang.

 

[snakeraper11b]

hey man, this is chris who you bought that 03 cobra pumpkin from a couple years ago. search my posts, this happened to me last year and I was able to fix it myself with the right tool (lock-n-stitch)

Hey man, long time. The diff is still going strong. Did a 5k 2 step launch the day before this happened, took it like a champ. I'm having trouble finding the write up, do you mind linking it in here?

 

[P49Y-CY]

here you go buddy, glad to hear that diff worked out well for you.

http://www.svtperformance.com/forums/showthread.php?996481-spit-another-plug!

best of luck with it, and let me know if I can answer any questions

edit: one other thing, i fixed the first one just by using a tap on the threads and it is still holding. but on this particular one the threads were completely toast.

 

[shurur]

I Had it vice versa...thanks for the link.

1. Timesert kit uses steel inserts.

2. I am trying to avoid using steel inserts, the locknstitch uses anodized aluminum. from what i understand it has better heat transfer characteristics which are important on a supercharged application.