Undertray Question.

[Stv]

Guys -
Can anyone confirm that there should be a hole in the undertray directly beneath - and in the same outline shape as - the sump ? Coz there's one here on our new 3R. The cut looks as rough as hell compared to the others below the battery etc.The pessimist in me is suggesting the tray has been cut for easy access at some point, rather than undo all the undertray screws.

There's a track day sump fitted from new as an option. Just need to know if there should be a hole there as standard..........Stv

[joust]

Sounds about right to me...

J

[Stv]

Answering my own question here - but for the benefit of all. Turns out the undertray has to be cut to accomodate a track day sump as its a tad deeper than the standard item.

[m12_nathan]

I'm sure mine isn't cut - are we talking about the flat undertray that runs the length of the car? Mine has a louvre thing in the middle and a pipe coming through from the aircon but there is no hole exposing the sump?

[pbrett]

m12_nathan said:

I'm sure mine isn't cut - are we talking about the flat undertray that runs the length of the car? Mine has a louvre thing in the middle and a pipe coming through from the aircon but there is no hole exposing the sump?

Hhhmmm I know what you're thinking, and I'll be crawling under my car when I get home. I wonder what sumps we've actually got....

[m12_nathan]

Just checked - 2x lourve grills down the centre line of the car, triangular opening in the middle (engine cooling?), grill thing in front of the drivers side rear wheel and 2x approx 6x3 inch recangles neatly cut under the engine?

[Stv]

Lads - Info came from official service centre up here.We just got the car a couple of weeks ago and don't know for sure if the undertray was cut when we got it or if it's been hacked on Monday when we put it in for its first service. Had a look underneath when we got it back and noticed the hole cut to suit the sump outline shape.

Called the garage and he said it was like that and either Noble or the supplying dealer cut the tray to suit the deeper track day sump. Says there's even a template available to do the job. To be honest I think it was cut on Monday - saves the service people removing all those screws to remove the tray for sump plug access. Seems to me cutting it would alter under airflow under the car.

[amg merc]

There's a Vee-shaped cutout under mine - have the baffled sump!

[CRAIG L]

stv it has taken a lot of time to get a good service guy in scotland, having known him for 25 years i dont think he butchers cars,so comments like yours wont help in the future when any of us have problems with our cars

[m12_nathan]

I have the baffled sump and no cutout despite it having been services at 2 places now - I'll post a pic later.

[CRAIG L]

ive owned 3 different m12s now and all 3 have had the track sump clearance cut out on the rear undertray

[m12_nathan]

Perhaps I don't have it then - I paid for it though!

Can anyone from the factory confirm if the undertray has to be cut to have a baffled sump?

[DanH]

its ok, not like you've tracked the car or anything...

Engine, meet smiley

[m12_nathan]

Nothing obviously sump shaped?

[BrianJ]

All these undertray descriptions are different!! I have, as shown in the photo, louvres and a triangular hole - but also a neat square opening and a larger irregular opening. Neither appear to give the track sump more clearance but do give access.

Brian.