tadltd
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| posted on 22/2/05 at 07:18 PM |
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LMP engine failure
Had the LMP at Bruntingthorpe last weekend.
After 4 laps the engine expired.
In a big way.
Details & pics at: www.turner-auto-design.com/news.htm
[Edited on 22/2/05 by tadltd]
Best Regards,
Steve.
www.turnerautosport.com
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JoelP
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| posted on 22/2/05 at 07:28 PM |
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ahhgh comiserations steve, must've been a well stressful day.
all the best on working out the cause etc.
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Wadders
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| posted on 22/2/05 at 07:44 PM |
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Really sorry to hear about that Steve, these things always seem to happen at just the wrong time.
It's all about how you handle the fallout, and by being up front and open about it i'm sure there will be no lasting consequences to you
or the business.
Good luck with the next one.
Al.
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alister667
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| posted on 22/2/05 at 07:57 PM |
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Unlucky Steve, all the best with the new one.
I was just wondering would you have any reservations about using a ZX12 in the future or are you confident it was just a one off oil blockage?
Cheers
Ali
http://members.lycos.co.uk/alister667/
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mangogrooveworkshop
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| posted on 22/2/05 at 08:01 PM |
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Volvorsport
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| posted on 22/2/05 at 08:02 PM |
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links not working for me
www.dbsmotorsport.co.uk
getting dirty under a bus
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kb58
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| posted on 22/2/05 at 08:26 PM |
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Yes, being up front, not hidding anything, and dealing with it immediately is the sign of a good company.
Sadly the exception rather then the rule these days.
Mid-engine Locost - http://www.midlana.com
And the book - http://www.lulu.com/shop/kurt-bilinski/midlana/paperback/product-21330662.html
Kimini - a tube-frame, carbon shell, Honda Prelude VTEC mid-engine Mini: http://www.kimini.com
And its book -
http://www.lulu.com/shop/kurt-bilinski/kimini-how-to-design-and-build-a-mid-engine-sports-car-from-scratch/paperback/product-4858803.html
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ChrisGamlin
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| posted on 22/2/05 at 08:47 PM |
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Ouch
Was it dry sumped Steve, not that it would seem that would have made a difference if your predictions on the cause are correct?
Chris
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tadltd
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| posted on 22/2/05 at 09:13 PM |
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Thanks for the commiserations guys.
The engine was dry-sumped, had been from the start. It was a total and immediate failure - no pressure loss or warning. The engine didn't even
show any signs of oil leaks, coolant loss, nothing that you could point a finger at. Click on the link above to read the initial report.
The strip down will reveal more and I'll publish the results of that on our site. If nothing else, it'll be good info for the BEC guys on
here.
I would have no qualms about putting another ZX12 in - and the track-sense car is retaining its engine. The blown engine has covered over 10,000 miles
of HARD, track use in 1.5 years, with all sorts of people driving it. An immediate failure such as this is unusual, so I'm more than confident
in the abilities of the ZX12.
Best Regards,
Steve.
www.turnerautosport.com
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Hellfire
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| posted on 23/2/05 at 12:13 AM |
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SH!T - you didn't have to do that before my go in it? You were some of the inspiration for us to go Kwakas especially the ZX12R. Good to hear
about the confidence regarding the engine and the doubt placed in the debris aspect...
I bet you feel gutted - but a new engine in will make it all worth while... good to hear it's another of the same...
ATB
PS Did it go on a high lateral G or otherwise?
[Edited on 23-2-05 by Hellfire]
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sgraber
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| posted on 23/2/05 at 02:22 AM |
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Turner, that sucks.
I am very to happy to hear that it was an engine component that failed and not some other item on the car. Without stripping engines down for rebuilds
it's almost impossible to tell when they are going to let loose.
It's certainly not something than anyone can hold against you or the car.
Steve Graber
http://www.grabercars.com/
"Quickness through lightness"
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Fred W B
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| posted on 23/2/05 at 05:43 AM |
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Bad luck Steve
I can vouch for the fact that to have a problem and deal with it in the public eye is better than trying to hush it up.
In later years it enhances your name, rather than being a detriment
Cheers
Fred WB
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tadltd
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| posted on 3/3/05 at 09:40 PM |
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UPDATE
OK, now we've racked our brains and investigated all possible scenarios, it looks like a loose oil scavenge pipe has caused the engine
failure.
Basically, there are two 6mm bolts that hold the flange of the scavenge pipe to the sump 'pan' of the dry-sump system. One of these worked
loose and was missing. Why did it come loose?
Well, the rubber o-ring that sealed the flange had been constantly leaking and was replaced by a thicker o-ring. However, this did not allow the
flange to close completely against the sump (otherwise the rubber would have been damaged). So there was constant tension on the bolts in the wrong
direction and coupled with the vibration it's clear why one of them worked loose to the extent it fell out. The other one was also loose.
We can therefore only deduce that the oil was not being scavenged back into the oil-tank from this pipe as it was leaking quicker than it could be
scavenged, and what oil remained in the tank only lasted 4 laps before the engine expired.
So we live and learn...
Best Regards,
Steve.
www.turnerautosport.com
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kb58
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| posted on 3/3/05 at 11:41 PM |
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Well done, a sign of a good company to be up front about it. Time to move forward.
Mid-engine Locost - http://www.midlana.com
And the book - http://www.lulu.com/shop/kurt-bilinski/midlana/paperback/product-21330662.html
Kimini - a tube-frame, carbon shell, Honda Prelude VTEC mid-engine Mini: http://www.kimini.com
And its book -
http://www.lulu.com/shop/kurt-bilinski/kimini-how-to-design-and-build-a-mid-engine-sports-car-from-scratch/paperback/product-4858803.html
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