[Diy_efi] Re: [jyturbo] No drag racing tomorrow - tubo shot -baghhhh!

[Mike]

At 08:26 PM 9/12/07, you wrote:
> Now that is scarey talking runaway diesel engines!  Thankfully on my turbo failure the intercooler caught all the chips, and what little oil was lost.
> Favorite quote from my South African friend: "The engine does not 'run away,'  it revvs up.  The MECHANIC is what runs away!"

haha, yeah I heard something similar, guys in Malaysia started up an old marine diesel and it
sort of ran ok for several  minutes, then slowed down, almost stalled, then sped up, started to go
a bit too fast so they cut the fuel, it slowed down, then sped up again, they look at each other
while checking the fuel valve, then panicked and stuffed a Kopec bag in the air inlet, it swallowed
the bag spat it out the exhaust, slowed down then sped up again, they were starting to freak out,
 how the f..k could this be and one guy finally dropped his pants and sat on the air inlet !

This eventually stopped it, dont ask me how ;)

Turned out the rings had set in the bores and there was enough crank oil getting past the hot
engine to keep it going, weird bit of almost 2-stroke dynamics there  :P

mike






>Later,
>David
>
>----- Original Message ----- From: "ian" <spyro at f2s.com>
>To: <diy_efi at diy-efi.org>
>Sent: Wednesday, September 12, 2007 6:55 AM
>Subject: Re: [Diy_efi] Re: [jyturbo] No drag racing tomorrow - tubo shot -baghhhh!
>
>
>>On Tue, 2007-09-11 at 21:43 -0500, David Allen wrote:
>>>Damn that sucks.  I really hate to hear that!!!!!
>>
>>I'll add my tale of turbo failure woe...
>>
>>Mine died simply of old age, the oil seal on the intake side failed.
>>
>>thing is though, I run a diesel. I got to find out just how tough the
>>little 1.0 motors bottom end was...
>>
>>After spotting the blueness following me at ~70MPH down the motorway (in
>>the innermost lane no less, it rapidly turned into a blackness (like, 2
>>seconds) that covered all three lanes so densly that I couldnt see
>>anything in the mirrors.
>>
>>Pulled over (praying nothing was dumb enough to undertake) and doing so
>>put my foot on the clutch (as one does when changing down etc.)
>>
>>__BIG__ mistake.
>>
>>remember, its a diesel... no load + infinte supply of nicely splattered
>>(by the turbo compressor) oil in the intake = RPM skyrocket.
>>
>>it pegged the rev counter (which, incidentally no loger works and todays
>>project is to bodge in an incompatible module from another motor).
>>
>>Redline for this engine *new* is 5k RPM (but realistically, this motor
>>runs into oil starvation much beyond 4200RPM and its powerband really
>>doenst go past 3800 RPM anyway).
>>
>>pegging the revcounter put the RPM over 8k... for about 20 seconds
>>before I got the wherewithall to stall the thing.
>>
>>Im *stunned* that it didnt seize.
>>
>>that was almost two years ago, and other than changing the oil, the
>>filter, and replacing the turbo (and glowplugs, which were totally burnt
>>away by the preignition), I've done _nothing_ to the bottom end or
>>pistons. the bores were smooth and it turned freely.
>>
>>
>>Anyhow, if my 20 year old, 1 litre diesel can take that on the chin, Im
>>sure a more modern petrol can handle it :)
>>
>>
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Regards from


Mike
Perth, Western Australia
VK/VL Commodore Fuse Rail panel that wont warp, twist or melt, guaranteed  !
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