Plenum Check - The Reason Why **ALL OWNERS PLEASE NOTE**

[galaxyclass]

WOW!!!!! Just checked the plenums on mine finally and found 3 1/2 inches of water in there and a piece of somebodys shirt!!!, will put pics up later, anyone who hasnt done this, do it NOW!!!!.

[Arctic]

Originally Posted by galaxyclass

WOW!!!!! Just checked the plenums on mine finally and found 3 1/2 inches of water in there and a piece of somebodys shirt!!!, will put pics up later, anyone who hasnt done this, do it NOW!!!!.

Hi John.
Hope you going to do the spyhole mod now it makes it much easier to check also change the pollen filter as it must be soaking with that amount of water in the plenum looks like you have had a lucky escape Arctic

[galaxyclass]

Originally Posted by Arctic

Hi John.
Hope you going to do the spyhole mod now it makes it much easier to check also change the pollen filter as it must be soaking with that amount of water in the plenum looks like you have had a lucky escape Arctic

Yes, just Pricing up replacement filter now, thankyou.

Pics of plenum



And a piece of somebodys shirt that was in there!!!

[GazYorkshire]

Had my 75 for about 6 weeks now, after reading this thread I thought it was time I checked mine.
It appears that someone has modified my central one - it has a grommet type thing at the top, which looks like the original, but there's no centre in it.
Underneath that, there is what appears to be a length of rubber tube with an inner diameter of 10 - 15mm which goes town to the floor level of the car.
Shine a torch down and I can clearly see the road underneath, it's not blocked & my plenum's bone dry.
Seems like the old girl's had a pretty enthusiastic owner at some point.

[galaxyclass]

Well, feel better now, plenum all nice and dry, new pollen filter and spyhole mod done, thanks to all for the pictures and how to's on here.


John

[Arctic]

Originally Posted by galaxyclass

Well, feel better now, plenum all nice and dry, new pollen filter and spyhole mod done, thanks to all for the pictures and how to's on here.


John

Hi John.
Glad that you caught it in time lets hope all the mebers check them and regular at least once a week with the old jack frost about now you will be carring your own giant ice cube if you do not that water will turn a solid block, then if it rains or you decide to wash the car water on top of that will soon reach the ECU just not worth it rod and rod again is the name Arctic

[Imm75]

Hi,
I get the 97mm measurement from the datum (plastic raised part), but what is the 180mm measurement for, are there two holes to be drilled. Also what is the vertical distance from the plastic rib?
Thanks
IM

[Arctic]

[QUOTE=Arctic;1109951]

Originally Posted by Arctic

Plenums we hear so much about them and the reason why is very clear below in the photo's that follow.

And even more important this time of year with the Autum leaf fall etc.


Yesterday a member of the club Mike came to have his handbrake mod fitted, as i always do i checked the plenum's after asking if he had checked them it turned out he had only brought the car Sunday so the car was very new to him, he had looked at the plenums from the drivers side and could see some water and he also heard the sloshing sound when driving.

The results can be seen below so come on gents lets keep on top of these plenums do the spyhole mod and its only takes 2 minutes to check for water once applied.

Pic 1 water at least 3" deep
1

Below is how to do the spyhole mod you will need a rule pencil 25mm drill bit and a 25mm rubber bung Fig 1
1

With the scuttle shield panel removed measure 97mm and 180mm from the points in the photo below Fig 2/3
2

3

Here you can see my template which i use at meets so i can easly turn over a good volume of trays in a few minutes Fig 4
4

With the panel marked out and your drill ready with its 25mm bit we/you can now drill the spyhole Fig 5
5

When you drill the scuttle tray makes sure you have support under the tray at all times Fig 6
6

7

8

9

10

Once drilled trim the hole to make it neat for the rubber bung to fit nice Fig 11
11

Spyhole mod done and ready for use Fig 12/
12

This shows the plumbers spring pipe bender Fig 13/14
13

14

If you intend to use the plumbers spring look for a 10mm or 15mm a boot lace and a tube mine was from an old wendy house but any 15mm tube will do 12" to 15" long Fig 15
15

Also grind or file the end of the spring to remove the curl so it is smooth and will easly go into the tube Fig 16
16

Spring being used in situ Fig 17
17

Hope this helps the new members and remenber check the plenums regular Arctic.

Originally Posted by Imm75

Hi,
I get the 97mm measurement from the datum (plastic raised part), but what is the 180mm measurement for, are there two holes to be drilled. Also what is the vertical distance from the plastic rib?
Thanks
IM

Hi Imran
the 180mm is to give a more acurate measurement from the edge also you have to points to focus on then just me being over the top really the vertical measurement is here in the pics below 23mm and in old money 7/8" hope that helps you cheers Arctic

[ProfDave]

Originally Posted by GazYorkshire

Had my 75 for about 6 weeks now, after reading this thread I thought it was time I checked mine.
It appears that someone has modified my central one - it has a grommet type thing at the top, which looks like the original, but there's no centre in it.
Underneath that, there is what appears to be a length of rubber tube with an inner diameter of 10 - 15mm which goes town to the floor level of the car.
Shine a torch down and I can clearly see the road underneath, it's not blocked & my plenum's bone dry.
Seems like the old girl's had a pretty enthusiastic owner at some point.

looks and sounds like my first 75 but I doubt its all the way up there!!

[GazYorkshire]

Originally Posted by ProfDave

looks and sounds like my first 75 but I doubt its all the way up there!!

You never know - I bought it from a dealer in Derby, previous keeper was in Great Yarmouth - she's been around a bit!