DIY Guide: Sump Guard for CSR (and possibly other metric Series 3 cars)

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James B
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Replying to #31

Fire away!  There's no monopoly on ideas that would turn out to be better solutions here.  I do think that the base platform/plate concept is quite powerful because it provides a strong, stiff and horizontal means to mount whatever 'rise and glide' elements you think best, but I'm hoping that someone can come up with a better wedge piece.

Someone else suggested cutting down a plastic/nylon kitchen chopping-board (they are as cheap as chips on eBay) for the impact plate and I think that has real merit, as it will really help with the 'slide' part of the equation.  But you still need something behind the sloping material to react the impact forces (without too much deformation) so as to feed them into the plate and the cruciform structure.

I'm looking forward to seeing some better solutions bolted to cars!

By the way, Frogman - why are you so far from your car?  Is it lock-down related?

James

Frogman
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I move between Colombia and UK several times during the year for work and I was in Colombia when the music stopped. Doesn´t look like there will be any international flights until probably mid late June at this rate.

Move fast, stay low.

John Vine
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Re #25:

I've just made a few measurements of the wet sump on my R400D metric S3:

 

Across the fins = about 210mm
LH (O/S) edge from centre line = 80mm
RH (N/S) edge from centre line = 130mm
Front of sump from centre of cruciform = 135mm
Bottom of sump below cruciform = 65mm
Diameter of angled cruciform tubes = about 20mm (actually, 19.3mm - 19.5mm)

James, does your sump sit centrally in relation to the cruciform?   If so, I think I'm going to have to modify your design and make an "offset" version of the base plate.

JV

 

 

James B
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Replying to #34:

Great that you're looking into doing this, John.

Yes, the Cosworth dry-sump pan is also offset and by about the same amount - though I never measured it.  My approach was to locate the platform plate on centre-line of car (so that the cruciform mounting arrangement is symmetrical and works well) and then I just positioned the wedge on the plate so that it lined up with and directly covered the front face of the engine - which meant it was positioned away from centre-line.  It does look, though, as though the front face of the Duratec wet sump (is that from Raceline?) is a bit wider at 210mm than the Cosworth casting - but I suspect it makes no difference to the principles.

If you look at my photos with this in mind, I think the offset will be apparent in at least some of them.

Hope that helps.  Keep the photos coming as you make progress!

James

James B
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Here you go - this one shows the offset with the Cosworth dry-sump.  The platform plate is centralised on the car and the wedge is offset towards the N/S to directly cover the exposed sump width.  I suppose there's no reason why the wedge couldn't be made wider and also mounted centrally, if keeping things symmetrical helps you to sleep soundly at night!

James

 

 

Mark w
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Don't forget the Feng Shui 

 

James B
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Replying to #37:

"Don't forget the Feng Shui"

Do I get those from eBay or does Redline stock them?

James

Mark w
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James 

You need to find a seller based in Asia 

John Vine
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Re #35 + #36:

Thanks, James.  All very clear now -- I should have looked at your earlier photos more closely.

And yes, my sump is from Raceline.

I'm off now to mock up a hardboard model of the platform plate.

Btw, when I browsed "alum-droitwich", I couldn't find a 350x200x6 sheet.  The nearest is 400x200x6.  Did you have your plate cut to order?

JV

James B
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John - ah yes, that was it (400 x 200 x 6).  They offer one cut for free, so I went for that (and asked them to supply both pieces).

A hardboard model is a great idea.  My prototype was made of 6mm MDF.  With the model in place (allow for the depth of the clamps which will space the board around 8mm below the cruciform) you can then work out the total depth that you need your wedge to be.

James