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In my pressure fed engine I don't need the oil sieve/filter because it's got a full flow filter. However I have replaced the sieve/filter with a 1/4 steel plate with some 5/8 holes in it. My thinking was to add some strength and have a horizontal baffle against oil surge.
Since the engine is going back together now I'm questioning the "strength" value. Would a lighter baffle be sensible?
What have other people fitted?
Thanks
Charles
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Location: Cheshire
Car type: Race Ulster, 1926 Special, 1927 Chummy, 1930 Box
12-03-2018, 03:44 PM
(This post was last modified: 12-03-2018, 03:46 PM by Alan.)
I’ve kept the sieve in mine. I’m not sure how much stiffness a plate will add, ( I might be able to get a friendly CAD jockey to work that out) but all my engines are flexibly mounted. No problems so far.........
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12-03-2018, 03:59 PM
(This post was last modified: 12-03-2018, 04:00 PM by Tom Coates.)
Mine has a piece of 10mm aluminium plate with a couple of big holes in it. This is sandwiched between the original filter and the crank case with some longer bolts holding it all together. I don't know how much stiffness it adds but I think that possibly the effect of filling in the open side of a box could be greater than the stiffness of the plate on its own (maybe wishful thinking?) In any case it can't do any harm!...
I would think that aluminium would be lighter than steel and easier to shape.
Are you going to be at Wiscombe?
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Location: Darkest Bedfordshire
I believe it's possible to fix oil leaks to all intents and purposes without resorting to such measures - I'd save the weight (unless you fear an ME109 might have a go at you from below? In which event a bit of armour plate has much to commend it). Personally I just fit the strainer, if only to catch some of the bits in case of engine disintegration.
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Hi Charles,
I have got a cast plate with a downturned 4" hole in the centre, this bolts in where the sump gauze was.
It has a copper gauze held on with a large worm drive clamp.
The gauze has saved my oil system from a few bits debris in the past, the plate also works as surge baffle.
It has been in the engine since the 1990's.
I can not remember where I got from, it might have been Tim Myall.
The plate is supposed the stiffen the crankcase an work as an oil baffle.
The Supersports / Ulster alloy sump will also stiffen the crankcase.
Probably not worthwhile for a road cars, but useful on a competition car.
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So the consensus is that the strength thing is a red herring. Good.
In which case I'll steal Ian Williams' idea for a baffle plate.
Thanks all
Charles
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Location: Auckland NZ
Car type: 36 Nippy, 31 RM, 38 Special, 24 Works Rep
Charles I can not take any credit as I stole the idea from Frank Hernandez, it works well though!
Black Art Enthusiast