The Doc
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| posted on 30/7/07 at 08:18 AM |
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Oil capacity of chopped sump
1600 XFlow
With 20-20 hindsight I would have made my sump with baffles and extended its capacity rearwards, but I didn't!
Basically I 'cut and shut' about 25mm and of course shortened the pick-up pipe accordingly.
Is this reduced capacity an issue. I'm thinking of adding an oil cooler to help with this. Should I bother bother?
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whitestu
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| posted on 30/7/07 at 08:22 AM |
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I did the same with my CVH and is seems OK so far. Haven't done many miles though.
Stu
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scoop
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| posted on 30/7/07 at 08:34 AM |
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Does it make sense to measure the content of the bit you cut off then leave that amount out when you fill up?
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The Doc
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| posted on 30/7/07 at 08:44 AM |
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Yes that's easy enough, just that I wondered whether this reduced capacity (which I would guess to be about half a litre/a pint) would cause any
significant engine wear problems
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wicket
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| posted on 30/7/07 at 08:45 AM |
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I did the same on a 1600x-flow sump, ('cut and shut' 25mm and shortened the pick-up pipe), which equated to 0.5lt approx. I keep the oil
level up to max. on the dip stick and had no problems so far.
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Bluemoon
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| posted on 30/7/07 at 10:04 AM |
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I guess if the volume of oil lost is the same or less than the volume from min and max on the dip stick and you keep it full you should be o.k.
Dan
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owelly
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| posted on 30/7/07 at 11:42 AM |
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I cut 40mm out of my Alfa sump and I think I'm having hot oil problems! When hot the oil pressure drops to 20psi (usually about 50-55psi) and
the hydraulic cam belt tensioner rattles like a moody box of metal frogs. I have and oil cooler and an accusump to plumb in to see if that makes any
difference....
Ideally, I should measure the oil temp.
Cut...
and shut....
[Edited on 31/7/07 by owelly]
http://www.ppcmag.co.uk
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BenB
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| posted on 30/7/07 at 02:09 PM |
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If you reduce the oil volume too much it'll be less than the amount circulating within the engine resulting in the pick-up sucking in air
resulting in now pressure and a dead engine.
Also the oil you are using will be circulating and being heated more often so your engine will run hotter and the oil will break down quicker....
Of course you can solve both problems but fitting an oil cooler which as well as increasing the circulating amount of oil will also mean it runs
cooler....
Happy days 
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rusty nuts
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| posted on 30/7/07 at 05:48 PM |
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Fitting an oil cooler can help with oil pressure but make sure you fit a thermostat with it. I found that if I filled my cross flow to max and used
the available engine speed I had a smoke screen behind, dropped level to halfway between max and min and don't have any problems
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