Mr Whippy
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| posted on 7/8/12 at 12:54 PM |
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what was that thing called?
A while back I saw a cylinder that filled with oil when your engine was running and then (I think there was a sping in it) when you went to start the
engine the oil flowed back into the engine giving you full oil pressure before you started so it help reduce engine wear
Anyone know of it?
Thanks
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loggyboy
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| posted on 7/8/12 at 01:05 PM |
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? http://www.oilamatic.com/engine-tlc.htm
Mistral Motorsport
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jeffw
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| posted on 7/8/12 at 01:07 PM |
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Accusump..
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hughpinder
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| posted on 7/8/12 at 01:09 PM |
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accusump: Manual or electric oil release - not cheap though!
http://www.demon-tweeks.co.uk/motorsport/oil-pumps-pressure-accumulators/accusump-manual-oil-pressure-accumulators
Regards
Hugh
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SteveWalker
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| posted on 7/8/12 at 05:13 PM |
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I wonder if a small central heating type expansion vessel, solenoid valve and maybe a non-return valve and and home-made orifice would do the job?
Non-return valve and orifice lets the vessel fill while the engine is running and turning the ignition to the crank position opens the solenoid, waits
a few seconds and then energises the starter?
Alternatively a normal car oil pump and electric motor arrangement should be easy enough to DIY cheaply.
On the other hand, when I used to have a Sierra, I stripped down the engine at 100,000 miles and found virtually no wear. How many starts are you
likely to do and is wear really going to be a problem?
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britishtrident
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| posted on 7/8/12 at 06:11 PM |
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Modern oils give so much more protection from cold starts it isn't worthwhile.
If I was going to fit to prolong engine life it would be either a pre-heater in either the sump or cooling system..
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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bi22le
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| posted on 7/8/12 at 06:16 PM |
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Yup, accusump.
They are simple in principle and I would of thought you could make your own. I have one on my car with manual valve.
It actually robs pressure at first start because the oil pressure is used to fill the accusump, thats why I want to get a 12V solenoid for it.
They are really expesive although the thread must be pretty standard. Does anyboy know what thread it is and where to get a cheap electriv 12V powered
valve?
Ill start another post maybe!!
Either way an accusump is essentially a cylinder with a piston in it. Its sealed at one end that has a spring between the sealed end and piston, there
is also a pressure gauge at this end to indicate pressure inside the accusump. Other end just has a threaded male thread to join onto and a emergency
high pressure release valve set to 150PSI I think. So it dont explode if there are issues!!
Track days ARE the best thing since sliced bread, until I get a supercharger that is!
Please read my ring story:
http://www.locostbuilders.co.uk/forum/13/viewthread.php?tid=139152&page=1
Me doing a sub 56sec lap around Brands Indy. I need a geo set up! http://www.youtube.com/watch?v=EHksfvIGB3I
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MikeRJ
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| posted on 7/8/12 at 06:19 PM |
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quote:
Originally posted by britishtrident
Modern oils give so much more protection from cold starts it isn't worthwhile.
The Accusump's primary job is as a cheap alternative to a dry sump to avoid oil surge problems, rather to to provide start-up protection.
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coyoteboy
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| posted on 7/8/12 at 06:49 PM |
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Indeed, cheap drysump with some issues of "over-filling" if you use a shortened sump and the standard amount of oil. CAnt imagine using it
as start-up protection but I suppose it would work. With a 12v solenoid valve it could be set to activate only when cranking or when running.
We made one by boring out an alu tube, turning a piston and using 3 o-rings and a screw-in tyre valve at the top. Seems to work a treat.
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britishtrident
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| posted on 7/8/12 at 07:39 PM |
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quote:
Originally posted by MikeRJ
quote:
Originally posted by britishtrident
Modern oils give so much more protection from cold starts it isn't worthwhile.
The Accusump's primary job is as a cheap alternative to a dry sump to avoid oil surge problems, rather to to provide start-up protection.
The OP wants it for start up cover.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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owelly
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| posted on 7/8/12 at 07:59 PM |
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Do you really need a piston? Tube with a welded top and the fittings on the bottom so there is an air gap at the top....?
http://www.ppcmag.co.uk
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MikeRJ
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| posted on 8/8/12 at 07:22 PM |
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quote:
Originally posted by owelly
Do you really need a piston? Tube with a welded top and the fittings on the bottom so there is an air gap at the top....?
You won't get much oil in it unless it's got a huge airspace - and when the oil runs out it will start pushing air through which
isn't great.
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