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Old 06-13-2007, 06:53 PM   #1
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Default For those of you on stock bottom ends w/ forced induction..

I am making this thread to document my process of pulling apart and trying to figure out what went wrong.

Lets start off with some info.

1996 mystic cobra.

Mods:

Vortech (S-Trim) V1 Supercharger
Ford 42/lb injectors
SCT MAF
Flowmaster cat-back
Bassani X
SVO shorty headers
31 spline axles
Short Throw Shifter,
subframe connectors
Eibach Springs
Adjustable struts and shocks
BBK caster camber
BBK throttle body
MSD ignition
Ford 3.55 Gear
Autometer fuel and boost pillar guages
Raptor shift light
Mickey Thompson E.T. Streets

[b]Car Made 455rwhp/395rwtq @ 10psi[b]

Gas= 93 Octane via mobile gas

Plugs =

This is what happened.


OIL FIRST STARTING TO POUR OUT









Here are 1 vid of it right after we noticed something was wrong..




Here is what it looked like when i pulled the plugs..








Update...

Didn't get a chance to pull the heads off or the intake for that matter since the throttle body and inlet tubing were being a bitch. Plus my buddy adam decided that it was ok to accidently drop the throttle linkage down somewhere by the headers.

Here are some updated pics.

Elbow



Inlet



Throttle Body



Inlet to supercharger



Bottom of blower from underneath the car



Drained oil



Air Filter



UPDATE

Well, Got more done with the help of Erik (aka MGT2002) and my girlfriend who helped out as well. Turns out she is mechanically inclined

Anyway..

Got the spark plug wires etc off, blower, brackets, coolant res, intake manifold etc etc etc..

Btw, THANKS ERIK for coming out again

































Here are some more pics from the tear down.

















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Old 06-13-2007, 06:53 PM   #2
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Here is what it looked like when i pulled the plugs..






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Old 06-13-2007, 06:58 PM   #3
 
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What kind of plugs are those? Also, what kind of gas were you using when it blew?
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Old 06-13-2007, 06:59 PM   #4
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Quote:
Originally Posted by ChromeCobra
What kind of plugs are those? Also, what kind of gas were you using when it blew?
I was using 93 octane from mobile

The plugs i will have to get back to you on. I'll see what they were gapped to.
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Old 06-13-2007, 07:09 PM   #5
 
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I've got $100 on a broken ring land. Like I mentioned on the phone, your at the HP level when the block can give up the ghost. I'm thinking ring lands due to the fact that you are getting so much oil blow it is getting sucked into the bi-pass and recirculated into the power pipe...then running down and out the filter.

Be happy a ring land broke and not a rod, atleast your block and crank 'should' still be good. Atleast there isn't a whole in the side of it.


What hole did those really oily plugs come out of? 7 or 8?

Do a compression test if you have the tools, it will tell you if the ring lands went.
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Old 06-13-2007, 07:28 PM   #6
 
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Quote:
Originally Posted by Shane97Cobra
I've got $100 on a broken ring land. Like I mentioned on the phone, your at the HP level when the block can give up the ghost. I'm thinking ring lands due to the fact that you are getting so much oil blow it is getting sucked into the bi-pass and recirculated into the power pipe...then running down and out the filter.

Be happy a ring land broke and not a rod, atleast your block and crank 'should' still be good. Atleast there isn't a whole in the side of it.


What hole did those really oily plugs come out of? 7 or 8?

Do a compression test if you have the tools, it will tell you if the ring lands went.
+1
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Old 06-13-2007, 08:08 PM   #7
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Do a compression test and Leak down test, that will tell you what cylinders are bad... Especially a leak down test. Time for you to call RGR, Rich Grohl Racing, to have you build a bottome end for your motor...Eddie
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Old 06-13-2007, 08:17 PM   #8
 
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Quote:
Originally Posted by venmousracer
Do a compression test and Leak down test, that will tell you what cylinders are bad... Especially a leak down test.

mabe you have a blown head gasket
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Old 06-13-2007, 08:21 PM   #9
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Quote:
Originally Posted by Shane97Cobra
I've got $100 on a broken ring land. Like I mentioned on the phone, your at the HP level when the block can give up the ghost. I'm thinking ring lands due to the fact that you are getting so much oil blow it is getting sucked into the bi-pass and recirculated into the power pipe...then running down and out the filter.

Be happy a ring land broke and not a rod, atleast your block and crank 'should' still be good. Atleast there isn't a whole in the side of it.


What hole did those really oily plugs come out of? 7 or 8?

Do a compression test if you have the tools, it will tell you if the ring lands went.
i would agree with you 100%... most likely, the ring land on the piston has cracked from detonation.. If you look closely at the plugs, it "looks" as those you can see a little bit of piston material on them... if you were to take a zoomed photo with the oil wiped off, it may be more evident... hopefully you can reuse your crank (i would toss the pistons and rods as im sure the wrist pins are no longer round from the pounding).

good luck!
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Old 06-13-2007, 09:22 PM   #10
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Unfortunate incident; however, I am glad you are documenting everything so that others can learn.

Your example is the reason I have not installed a Procharger on the Mach 1. The rods and pistons in my Mach 1 are garbage and blowing the motor is not a matter of if, but when.

You keep posting and I will keep reading. If there is anything I can do or someone I can talk with to help negotiate, let me know.

Dave
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Old 06-13-2007, 09:53 PM   #11
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Quote:
Originally Posted by [email protected]
i would agree with you 100%... most likely, the ring land on the piston has cracked from detonation.. If you look closely at the plugs, it "looks" as those you can see a little bit of piston material on them... if you were to take a zoomed photo with the oil wiped off, it may be more evident... hopefully you can reuse your crank (i would toss the pistons and rods as im sure the wrist pins are no longer round from the pounding).

good luck!
i'kk take pics of the plugs w/o the oil
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Old 06-13-2007, 09:58 PM   #12
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Quote:
Originally Posted by Blood on Blood
Unfortunate incident; however, I am glad you are documenting everything so that others can learn.

Your example is the reason I have not installed a Procharger on the Mach 1. The rods and pistons in my Mach 1 are garbage and blowing the motor is not a matter of if, but when.

You keep posting and I will keep reading. If there is anything I can do or someone I can talk with to help negotiate, let me know.

Dave
Thanks Dave
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Old 06-14-2007, 07:16 AM   #13
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Quote:
Originally Posted by [email protected]
i would agree with you 100%... most likely, the ring land on the piston has cracked from detonation.. If you look closely at the plugs, it "looks" as those you can see a little bit of piston material on them... if you were to take a zoomed photo with the oil wiped off, it may be more evident... hopefully you can reuse your crank (i would toss the pistons and rods as im sure the wrist pins are no longer round from the pounding).

good luck!


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Old 06-14-2007, 07:16 AM   #14
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UPDATED @ THE TOP
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Old 06-14-2007, 08:58 AM   #15
 
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Mikey
Did you have the breather line from the valve cover to blower inlet hooked up.
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Old 06-14-2007, 09:02 AM   #16
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Quote:
Originally Posted by 95trippleblackconv
Mikey
Did you have the breather line from the valve cover to blower inlet hooked up.
Yes, everything was hooked up as it should be.
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Old 06-14-2007, 02:53 PM   #17
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I agree on a smoked piston.

Why? . . .

I looked over your list of mods. I see a glaring ABSENCE of fuel system upgrades.

You went lean.
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Old 06-14-2007, 02:55 PM   #18
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Quote:
Originally Posted by zenriddles
I agree on a smoked piston.

Why? . . .

I looked over your list of mods. I see a glaring ABSENCE of fuel system upgrades.

You went lean.
I have 42/lb injectors and SCT MAF. forgot to put that in my sig.
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Old 06-14-2007, 02:55 PM   #19
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Quote:
Originally Posted by VenomInside


again, this is WHAT I THINK I SEE..

on the flat of the plug, it looks as though you can see some piston... if you take your fingernail, do the little specks rub off or are they melted on?
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Old 06-14-2007, 02:59 PM   #20
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Quote:
Originally Posted by [email protected]
again, this is WHAT I THINK I SEE..

on the flat of the plug, it looks as though you can see some piston... if you take your fingernail, do the little specks rub off or are they melted on?
Some of it rubs off and some seems to be melted on.
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Old 06-15-2007, 06:14 AM   #21
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UPDATE

Well, Got more done with the help of Erik (aka MGT2002) and my girlfriend who helped out as well. Turns out she is mechanically inclined

Anyway..

Got the spark plug wires etc off, blower, brackets, coolant res, intake manifold etc etc etc..

Btw, THANKS ERIK for coming out again































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Old 06-15-2007, 07:44 AM   #22
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Mikey, Your not going to like what im going to tell you but....I belive those supercharger's run off engine oil, basicly when you pop your engine you send all of that metal and crap thur the s/c and it works the other way around. Id send out the blower to get it checked out. I wouldn't want to cash a new engine.

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Old 06-15-2007, 07:58 AM   #23
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Well if the supercharger is toast, then you are really starting over, especially since the transmission is stock and probably on life support.

As a result, might I suggest a 347 or 408, accompanied with a supercharger/turbo kit (your choice) and a TKO 600.


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Old 06-15-2007, 08:32 AM   #24
 
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I may have missed it, but were you running and intercooler?
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Old 06-15-2007, 08:34 AM   #25
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Quote:
Originally Posted by imbuggin
I may have missed it, but were you running and intercooler?
I was researching intercoolers at the time when it blew.
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