Spool Turbo MP3 Blew Up

[MPNick]

Hey....

This are my Actual Plugs when me engine blew!
Check the left one...looks green, very green!!! = DETONATION

Since when does green plugs mean detonation? It looks like coolant or maybe octane booster to me. If you have bad detonation you would have deposits on the plug tips.

Thanks again


Later..........Nick

 

[MPNick]

can't rule out the tune though. It could have still been my fault. But with the JandS and knowing that my wideband was reading fine, the EGT's were fine, and no signs of trouble popped up until that heat when it was rich and then blew... don't know! I drove it 300 miles out there at decent speeds on the interstate, drove it in town and back... put it through the heats etc. And had actually pulled some timing and so forth out on the drive to Michigan and so forth to make things "safer" and less aggressive... but it could still be the tune. I'll look for any sign of detonation. Terry had said that he'd get audible pinging at times when he ran it up to near 13 for the AFR and with certain timing. I was running at the leanest around 12.2 and typically more around 11.8. So don't know! But it's blown, and it'll be a fun but BIG project!

While running to lean will cause detonation you also have to look at other things. Running to rich may cause pre-ingition. Also how much boost are you running? Can your intercooler flow weel with they much boost or are you just pumping alot more hot air? What about your header? At the MP dyno day we saw Danas header glowing red hot at the flange when he hit 15psi. He has way to much back pressure at that boost level. A bigger problem is most of the red glow was from the number one runner at the flange. That runner seems to be the worst with back pressure. That means that the AFR in that cylinder will not be the same as with the other cylinders as the boost goes up. So you can have the best WD in the world and it will not help if the air flow is not the same.


Thanks again


Later..........NIck

 

[igdrasil]

Since when does green plugs mean detonation? It looks like coolant or maybe octane booster to me. If you have bad detonation you would have deposits on the plug tips.

Thanks again


Later..........Nick

Ive always seen that in my car. And I have read a lot about plugs and stuff. I never use octane booster, I only use 93oct Shell Gasoline.
Ive seen deposits but the camera cant detail it. Ive even seen big debrees (big enough to see at sight) in the plugs but not this time.

White plugs/white exhaust valves = Lean
Yellowish/green = bad detonation = (those were the pistons that broke)

I will pull the head off today and take some pics...will see.

 

[changedman]

werd. when i DO get my turbo, i'll be keeping low boost until i get some bettar rods+pistons.

 

[Kooldino]

Did you replace the oil squirters in your rebuild or did you reuse them?

Reuse. I never saw a reason to replace.

 

[Kooldino]

I was looking at the FS-ZE engines and pondering that as my "interesting" option... Don't know the ups or downs of that engine yet to know if I want to do that or not or what benefit it would have.

Definitely NOT worth it. You'll pay 3x as much, and it won't net you anything. Linux dyno'd his back in the day and his dynos were comparable to a similarly moded mp3.

 

[Kooldino]

That means that the AFR in that cylinder will not be the same as with the other cylinders as the boost goes up.

Maybe my pre-TB injectors have something to do with that?

So you can have the best WD in the world and it will not help if the air flow is not the same.

WD?

 

[1FASTMP5]

Ive always seen that in my car. And I have read a lot about plugs and stuff. I never use octane booster, I only use 93oct Shell Gasoline.
Ive seen deposits but the camera cant detail it. Ive even seen big debrees (big enough to see at sight) in the plugs but not this time.

White plugs/white exhaust valves = Lean
Yellowish/green = bad detonation = (those were the pistons that broke)

I will pull the head off today and take some pics...will see.

^ my colder plugs look a little green like yours in the pic. so this means im detonating????? anyone else got feed back on this???

 

[TurfBurn]

While running to lean will cause detonation you also have to look at other things. Running to rich may cause pre-ingition. Also how much boost are you running? Can your intercooler flow weel with they much boost or are you just pumping alot more hot air? What about your header? At the MP dyno day we saw Danas header glowing red hot at the flange when he hit 15psi. He has way to much back pressure at that boost level. A bigger problem is most of the red glow was from the number one runner at the flange. That runner seems to be the worst with back pressure. That means that the AFR in that cylinder will not be the same as with the other cylinders as the boost goes up. So you can have the best WD in the world and it will not help if the air flow is not the same.

I was only running 7 psi of boost, my occasional boost creep maxed out at 12 psi for the highest it saw that day. I also had low overall EGT's like I said.. 740C I believe was the highest, and that was from the #1 runner which is one of my lean cylinders (plugs on 1 and 2 are typically white, while my 3 and 4 plugs are typically brown). I have the standard intercooler for spool cars, but it should be plenty enough for 7 psi and I run the Evo III 16G for what that matters or doesn't as far as boost temps and efficiencies.

It looks like cylinder number 3 is what blew up. So I have to check that out yet... but it'll be a while. But as far as I can tell other than suddenly being richer than I should have been across the board, there was no warning sign before things blew up.

 

[igdrasil]

^ my colder plugs look a little green like yours in the pic. so this means im detonating????? anyone else got feed back on this???

Turbo?

 

[Little Beavis]

My brother with a stock MSP was repeatedly pulling on me, which isn't right! And this was before and after my last tune.

And you didn't even get to race me. . .I would have whipped the crap out of you. . .probably still could even with a busted manifold!

(headbang)

Anyway, let the fun begin. . .we've got a big project now!

 

[1FASTMP5]

Turbo?

yes sir! i got a msp conversion on my p5

 

[MPNick]

Maybe my pre-TB injectors have something to do with that?


WD?

Can see that being the problem. Deans car made 328 with the very same extra injector setup and he was in 4th gear everytime. Not one time did he have any red glowing anything from his car. He was also running 15psi just like you and he did not the 5.0 volt cut. He now is running 21psi and still it does not look like a neon light anywhere under his hood, no glowing at all.

BTW, when is a runner glows near the head port first and then works it way down to the flange you have a lean cylinder. If the flange glows first and then starts to work its way up to the head then you have backpressure problems. Your flange got red hot and then it moved up a small amount on the runner. You had to back off because of the fire and hitting the 5.0 limit, if not you runner would have been glowing all the way up to the head. I will post the video tonight so you can see what I am talking about.


Thanks again


Later............Nick

 

[TurfBurn]

igradsil... I know it's a long shot, but I do wonder if the extended reach plugs had anything to do with it. Even though they are a 7 range cold plug, I wonder if that tip was far enough out to initiate pre-ignition like MPNick suggested. I guess I'd be surprised though about the pre-ignition but anything is possible. The car was cold and rich for a good 5 minutes before it blew....

 

[roni]

And you didn't even get to race me. . .I would have whipped the crap out of you. . .probably still could even with a busted manifold!

(headbang)

Anyway, let the fun begin. . .we've got a big project now!

(fight) lol

 

[roni]

That means that the AFR in that cylinder will not be the same as with the other cylinders as the boost goes up. So you can have the best WD in the world and it will not help if the air flow is not the same.

WD?

maybe mpnick meant WB/wideband??

 

[changedman]

Picz!!!!!!!

 

[CONEH8R]

And you didn't even get to race me. . .I would have whipped the crap out of you. . .probably still could even with a busted manifold!

(headbang)

Anyway, let the fun begin. . .we've got a big project now!

I'll race you.
From the lawn chair, into the car, and then up the road.

Ok, I'm done now... back to the corner...

 

[MP3skaterNC]

you crazy protege owning brothers.

 

[TURBO3WAGON]

Sorry to hear that - bad trip.

Been there, done that. Start over with forged internals!