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 Posted: 09-14-2005 11:45 pm
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Mark Rosenbaum
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Joined: 03-12-2005
Location: Kingman, Arizona USA
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Having some time on my hands, I decided to see exactly how full a late-engine JH oil sump gets for various fluid quantities.  Not having any food coloring immediately to hand, I used a tea bag to tint tap water which was then poured into the sump in measured increments.  In the photos, the fluid levels turned out to be a bit hard to see, so I added red lines to make things more apparent.

I can't seem to get the photos to show up here directly, so if you're interested, check out the photos at  http://jhppg.com/gallery/Oil-sump-fill-levels  .


 


 

Last edited on 09-14-2005 11:58 pm by Mark Rosenbaum

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 Posted: 09-15-2005 02:41 am
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Tony Hollart
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Joined: 03-21-2005
Location: Waitomo Caves, Otorohanga, New Zealand
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Mark,

 

The baffle that is in the sump is this standard? My car has a similar looking baffle but it looked so crude I thought it was a modification by the previous owner.

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 Posted: 09-15-2005 03:08 pm
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Mark Rosenbaum
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Tony,
Yes, the baffles were installed by Lotus when the engines were built.  It's my understanding -- which may not be correct -- that they were added in response to complaints by owners who raced their cars and experienced low or no oil pressure on long banked turns.  I did a survey some years ago and the baffles were present in three quarters of the cars whose owners responded.  If I recall correctly (a dubious proposition at my age) they were first used some time after the change in engine design circa engine no. 2760.

UPDATE:  In the text above, 2760 is the correct engine s/n, not 2860 as was originally typed.  Sorry for any inconvenience this may have caused.

Last edited on 09-16-2005 03:06 pm by Mark Rosenbaum

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