928 S/4 Engine Undertray - do I need one?
#1
Thread Starter
Burning Brakes
Joined: Mar 2013
Posts: 881
Likes: 117
From: Sunshine Coast, QLD,Australia
928 S/4 Engine Undertray - do I need one?
I need some advise around the undertray please. In short, my car does not have one, and as luck would have it there is one for sale close by.
Does my car need one? Will fitting one greatly improve my car or should I spend the money on other things on the to do list?
Thanks in advance.
Does my car need one? Will fitting one greatly improve my car or should I spend the money on other things on the to do list?
Thanks in advance.
#2
I have it in my mind that the undertray will protect the engine bay by preventing water and grime to be sucked up into it. This is especially important in environments where salt may be used to clear roads. Probably, however, it is also advisable if you drive in the rain as well. I would buy one.
Last edited by Red Flash; 05-28-2013 at 06:38 PM.
#4
I would plan on buying one eventually, but your decision depends on the price of the one close to you and what's on the "to do" list. If new fuel lines or refreshing the trans fluid lines is on the list that should take priority as failure in those areas is often fatal to the car. Same goes for timing belt/water pump and tensioner rebuild.
Mike
Mike
#5
I need some advise around the undertray please. In short, my car does not have one, and as luck would have it there is one for sale close by.
Does my car need one? Will fitting one greatly improve my car or should I spend the money on other things on the to do list?
Thanks in advance.
Does my car need one? Will fitting one greatly improve my car or should I spend the money on other things on the to do list?
Thanks in advance.
#6
Get one !
There are numerous tales here of unwanted things ran over that caused damage that could have just skidded off the undertray. Try having a plastic bag getting caught in your alternator !
Get one !
There are numerous tales here of unwanted things ran over that caused damage that could have just skidded off the undertray. Try having a plastic bag getting caught in your alternator !
Get one !
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#8
I need some advise around the undertray please. In short, my car does not have one, and as luck would have it there is one for sale close by.
Does my car need one? Will fitting one greatly improve my car or should I spend the money on other things on the to do list?
Thanks in advance.
Does my car need one? Will fitting one greatly improve my car or should I spend the money on other things on the to do list?
Thanks in advance.
Buy the much stronger and better aftermarket front aluminum undertray instead of the factory default plastic one, and move the two naca-ducts from an original one (takes seconds to drill out the rivits, and re-install them with lock-nuts. I did so a few years ago, and happy that I did so).
928 504 021 02 protective plate, front
928 504 029 02 protective plate, back
But do not buy the original front plastic version one, as per my above writing: buy the much stronger and better aftermarket front aluminum undertray.
#9
What's the views on fitting the under tray without the naca ducts vs no under tray, ie will the motor mounts get to hot with the tray on with no ducts?
The ducts are N/A right?
Mine came to me with no under tray fitted.
The ducts are N/A right?
Mine came to me with no under tray fitted.
#10
Seriously, the factory front tray is very fragile, and won't do much to protect the engine vitals. The aluminum tray from 928 International is quite sturdy, but as you note does not include ducts. Personally I think an aluminum tray without ducts is far better than a factory one with, and if you can find a used/trashed factory tray then you can salvage the ducts.
#11
If you live in a winter climate with lots of wet snow, the plastic tray is not very good. In pulling into a driveway that had not been plowed, the build-up of snow tore mine right off. If you are going to replace the tray I strongly suggest the aluminum one.
#13
Thread Starter
Burning Brakes
Joined: Mar 2013
Posts: 881
Likes: 117
From: Sunshine Coast, QLD,Australia
Thank you for the advice, all. I will go and have a look at it this weekend. If it is as per the photos I will get and fit it.
I do not expect to have snow in my driveway (it is winter here, temp around 15 Celsius at night - 23 daytime. You can see some winter pics here. http://www.facebook.com/media/set/?s...0385106&type=1
I do not expect to have snow in my driveway (it is winter here, temp around 15 Celsius at night - 23 daytime. You can see some winter pics here. http://www.facebook.com/media/set/?s...0385106&type=1
#15
If you happen to drive anywhere around Phoenix or Tucson, you need the undertrays to deflect road hazards (such as an 18" section of oil drilling pipe) away from the oil pan, alternator and everything else hanging off the front of the motor. I know from firsthand experience x2. This is one example of the bellypan sacrificing itself. I was able to "repair" this one (second pic), but in the other instance it was a goner.