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PostPosted: Thu May 09, 2013 3:56 pm 
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Junior WRC

Joined: Fri Jan 29, 2010 10:39 pm
Posts: 514
Location: Bournemouth
Car Model: ST205
Are there any repercussions from running a gt4 with no undertray for long periods time (i.e. 3 years)

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PostPosted: Thu May 09, 2013 4:01 pm 
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Joined: Thu Jul 14, 2005 3:07 pm
Posts: 988
Location: Fareham
Car Model: ST205
There are risks to damage and overheating as the under tray protects and also filters air to aid cooling (i believe?)
But no other repercussions that I am aware of although I believe others may be better qualified to answer this more accurately.

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PostPosted: Thu May 09, 2013 4:12 pm 
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Group N
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Joined: Wed May 02, 2012 9:49 am
Posts: 188
Location: Fife
Car Model: ST205
Yes. The driveway gets black. :shock:

More potential for mechanical damage from stones etc. esp. if timing belt cover off too, and a lot more engine bay corrosion, general filth, and moisture in electrical connectors.

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PostPosted: Thu May 09, 2013 4:23 pm 
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Junior WRC
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Joined: Sun Oct 09, 2005 9:58 pm
Posts: 686
Location: South Wiltshire
Car Model: ST165
datajon wrote:
1) reduces road muck getting into engine bay
2) reduce road wash doing stuff harm ie alt bearing, tensioner bearings etc
3) reduces drag
4) increase cooling for coolant radiator
5) better cooling towards charge cooler pre rad
6) better cooling towards using front mounted intercooler
7) improved handling due to smooth bottom effect
8.) better MPG.
9) toyota design & install under trays for all the above reasons
10) only lazy dim wits don't keep them on. :lol:

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PostPosted: Thu May 09, 2013 4:56 pm 
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Joined: Wed Jul 13, 2005 12:14 am
Posts: 3265
Location: Camberley, Surrey
Car Model: ST205
Agree with all the above.

I ran mine without for a while and the engine bay ended up a rusty mess.

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PostPosted: Thu May 09, 2013 7:13 pm 
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Joined: Sat Sep 02, 2006 3:13 pm
Posts: 3679
Location: Bournemouth
Car Model: None
My 205 never had them when I bought it. Any puddle of any significance at speed and the car grinds to a halt - normally in the middle of the puddle so you get your feet wet drying out the ignition.

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PostPosted: Thu May 09, 2013 7:49 pm 
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Junior WRC

Joined: Fri Jan 29, 2010 10:39 pm
Posts: 514
Location: Bournemouth
Car Model: ST205
Mind never had it either that's why I ask. There is no rust in there...YET

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PostPosted: Thu May 09, 2013 8:30 pm 
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Joined: Fri Apr 12, 2013 4:37 pm
Posts: 10
Car Model: None
ALSO it prolongs the life of the oil sump :)


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PostPosted: Tue May 14, 2013 12:32 am 
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Junior WRC

Joined: Fri Jan 29, 2010 10:39 pm
Posts: 514
Location: Bournemouth
Car Model: ST205
haha, i don't have to worry about that because oil ALWAYS finds its way out of my engine and there is evidence (this time) of it on the bottom of the sump.
Last year my car amazingly teleported all of its oil out of the engine in one go never to be seen again. Caused quite a lot of damage. Nibbles had to tow me back to the nibbles repair bay...
Never got to the bottom of where it went.... Oh, Lewis witnessed it happen too.

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