Engine/Transmission (1994 - 1998) Witnessed my first runaway toady..

[Howard Durand]

Is there a commercial source for the guillotine device? I installed a diode in my starter circuit after losing a fuel solenoid.

I would gladly spend the cost of a device that would prevent total loss of an engine. Hopefully before it happened.

 

[Ol'TrailDog]

As CToney posted



Roda Deaco valve: www.rodadeaco.com



for a commercial do daw.

 

[Howard Durand]

I checked their web site. Nice looking device but didn't see any mention of price. Probably not cheap. One thing that was mentioned. They expect them to be attached as close to the intake manifold as possible. No rubber hoses between the device and the manifold.

 

[WDixon27]

any weak point like a rubber hose would get sucked in, i've herd about holes getting sucked in sizable chunks of wood used to starve a run away

I checked their web site. Nice looking device but didn't see any mention of price. Probably not cheap. One thing that was mentioned. They expect them to be attached as close to the intake manifold as possible. No rubber hoses between the device and the manifold.

 

[Woodenhead]

I'll bet a guy could get a 3 or 4 inch butterfly valve and get creative putting that in the intake. Shouldn't be hard to rig up a pull cable to yank it shut. Might be a little restrictive but maybe with a big enough valve in wouldn't be too bad.

 

[Howard Durand]

How about sticking an exhaust brake on the intake?

 

[Woodenhead]

I doin't know how much they want for the proper cutout for the intake but I do know what I paid for my exhaust brake and I'm guessing you could get the right tool for the job for less. For the $$ of a brake I don't think it'd be worth the hastle trying to make something like this work. Also, the exhaust brake is designed to let some exhaust by so it'd likely let some air in still.

 

[PKemp]

This is like Deja Vu!

A week ago a UPS truck came into the shop. 1997 with a CTD B5. 9 and a 5 speed. It was a badly trashed runaway. It's turbo's seal went, sucking oil out of the pan. We put a new long block in it and the mechanic had just about finished putting her all back together. Time to light the fire came and all seemed to go well until it started to rev higher and higher. It steadily climbed past its starting idle. People began to move quickly away sensing another runaway was about to come apart. The sick looking mechanic seemed to have a light go off over his head as he grabed his knife out of his pocket and bravely reached in and sliced the intercooler boot away from the intake manifold horn. He grabbed one of our "rubber coated steel plates" and slapped it between the cut boot and the intake horn. The engine died quickly and after a half day inspection proved to be okay. What happened? The search was on for the detail that was overlooked. He discovered much to his dismay and lost time that he had forgotten to flush the oil out of the intercoooler, tubes and boots following the first runaway. Its amazing how much oil can collect in the intercooler. He was lucky. All it cost him in the end was a half days work and a new boot.

 

[RVPILOT]

boltcutters

How about a pair of longhandeled bolt cutters ? Stormy

 

[ddechris]

I read in my owners manual about using a CO2 extinguisher under the front right headlight where the fresh air intake would be. Don't remember anything about sizing it. But if that is the safest method, how about making it more effective. How about a CO2 extinguisher ported directly into the air intake horn? Drill a port and plumb it to a big extinguisher under the cab somewhere. Use a generic choke cable to actuate it from the drivers seat where you would first know what is going on. It should at least slow it down so you could take secondary action...



Just thinking out loud.



- Dave

 

[Champane Flight]

Backwards...

I've never witnessed a runaway, but my teacher at tech school told me stories of them from his days at a Detroit dealer, back when the 2strokes were still Detroits thing. He said one time they had one runaway, and a guy stuck a service manual over the intake, but the idiot stuck it over the intake pages down and opened up. It just kept sucking pages it and spitting pieces of paper out the exhaust. I'd like to witness it someday, just from a distance

The old detroits would run backwards also. I had a kid drop a trailer in a ditch one time. On trying to pull himself out he dropped the clutch and then released it quickly, you could hear it running but it was very quiet, (exhausting through aircleaners) he tried to shut it off, and pulled emergency butterfly, no shutdown. The only thing that killed it was me jumping up and yelling to put it in 6th and dump the clutch... Darn thing still ran afterwards, no problems.

 

[Hammer]

Sometime you want to hear a scary runaway story ask Loretta Mitchell about hers. She related to me,when it was told to me along time ago,that it was bad enough that Dave had a manual fuel shutoff installed for her..... Andy

 

[4570]

With out reading all the messages here if any one hasnt mentioned it already ,using a fire extinguisher to put out a run away would cause allot of internal damage unless it was a CO2 or a Halon extenguisher . Arnie

 

[Howard Durand]

I contacted Roda Deaco about their shutoff valve. Their electrically operated model for manual control on our engines runs $760. 00 US

The sales person was surprised to be contacted by me as they normally serve the industry.

Anyone interested can contact:



Conrad S. Bodnar

Operations Manager,

Roda Deaco Valve Inc.

3230 - 97 St.

Edmonton, AB, Canada

T6N 1K4

Ph: 780-465-4429

Fx: 780-469-6275

E-mail: -- email address removed --