Now THAT'S how you blow up a 500hp Buick!
08-20-2003, 12:51 AM
#1
Pr0n King
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Now THAT'S how you blow up a 500hp Buick!
WHOA.
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In order to get the TSM car ready for the Morocco event, I took FAST V6 down to Competition Motorsports in Cincinnati with Lonnie Diers for some "real tuning." The engine setup was the same that I had been running for years with the exception of aluminum heads, 72pph injectors (up from 52s) and Cometic head gaskets. Mind you I have been beating on this stock block with stock internals for almost 10 years now.
First pull netted just under 500HP with 23psi boost and a quite-lean air:fuel ratio (like a maximum of 13.5:1) burning straight C-16.
On the Second pull I added another 4% fuel (which I found out later added 15HP) but at ~5,700 the engine stumbled, made a Bang! and died...then bolts started falling out of the engine compartment...and then a much-larger-than-usual oil leak started dripping.
The ensuing conversation went something like this:
"What happened?"
"I think I just blew an engine"
"Sounded like a timing chain let go"
"Where's all that oil coming from?"
"Where them bolts coming from" ... you get the idea?!
I hit the starter and with a valve cover breather off, we could see the valve train wasn't moving. As such, we figured it was the chain. Upon dissasembly, things took a turn for the worse.
I am of the opinion that the RJC Engine Girdle contained the mess as much as possible. It could have been worse.
First pull netted just under 500HP with 23psi boost and a quite-lean air:fuel ratio (like a maximum of 13.5:1) burning straight C-16.
On the Second pull I added another 4% fuel (which I found out later added 15HP) but at ~5,700 the engine stumbled, made a Bang! and died...then bolts started falling out of the engine compartment...and then a much-larger-than-usual oil leak started dripping.
The ensuing conversation went something like this:
"What happened?"
"I think I just blew an engine"
"Sounded like a timing chain let go"
"Where's all that oil coming from?"
"Where them bolts coming from" ... you get the idea?!
I hit the starter and with a valve cover breather off, we could see the valve train wasn't moving. As such, we figured it was the chain. Upon dissasembly, things took a turn for the worse.
I am of the opinion that the RJC Engine Girdle contained the mess as much as possible. It could have been worse.
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08-20-2003, 12:59 AM
#8
Pr0n King
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7
Ain't THIS a *****!
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Ain't THIS a *****!
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08-21-2003, 09:56 PM
#9
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I didn't hose up my transmission bellhousing like that, but I did quite a number on the supercharged 302 I used to have in my Mustang. You can see some pics in this folder on my primitive "web site": http://www.submariner.org/thepno95/P...lown%20engine/
I was only spinning about half the RPM they were at, and I was probably under 50% throttle when it let go. The "shattered pulley" pictures are where it all started (I think) - the pulley fatigue failed, threw the crank out of balance and BAM! that was all she wrote. The "oilspill1" picture shows the stripe of oil I left - about 60 yards long and 18" wide down the turn lane as I drifted off to the side of the road. Good stuff!
I was only spinning about half the RPM they were at, and I was probably under 50% throttle when it let go. The "shattered pulley" pictures are where it all started (I think) - the pulley fatigue failed, threw the crank out of balance and BAM! that was all she wrote. The "oilspill1" picture shows the stripe of oil I left - about 60 yards long and 18" wide down the turn lane as I drifted off to the side of the road. Good stuff!
08-21-2003, 10:13 PM
#10
Pr0n King
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Whoa. Sounds like a catastrophic failure! A friend of mine lost his bottom half when his T-Trimmed stock block'd 5.0 puked the crank snout going down the track...
It was violent enough to blow out the bottom of the bloc, crack the AOD transmission bellhousing, send shrapnel into the front bumper and shake the car violently enough to pop the airbag in the car.
I just caught my Mustang on fire at the end of the track when I dumped a couple of hypereutectic pistons under too much boost.
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It was violent enough to blow out the bottom of the bloc, crack the AOD transmission bellhousing, send shrapnel into the front bumper and shake the car violently enough to pop the airbag in the car.
I just caught my Mustang on fire at the end of the track when I dumped a couple of hypereutectic pistons under too much boost.
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