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post #1 of 9 (permalink) Old 09-22-2013, 06:07 PM Thread Starter
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Question Suggested Oil Filter

Hi: Wondering what the group is using for oil filters on the standard wet-sump Lotus Twin Cams. Actually I have a MK I Lotus Cortina but it has the SE 115 HP engine. Have been using the Fram PH2870A filter but scanning the Fram web site, they recommend a PH3600. Lower relief oil pressure.

I know the Elise group recommend the K&N HP2009 on the Lotus modified Toyota Celica GTS motor that is in the Elise as the preferred Toyota oil filter is no longer made.

Interestingly, the recommended K&N filter for my Lotus Cortina is also the HP2009.

Comments?
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post #2 of 9 (permalink) Old 09-23-2013, 03:44 AM
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K&N is no longer recommended after they started building them in Mexico. Mobil-1 is the one to use with the same number.
see here...
https://www.lotustalk.com/forums/f312...filter-160298/
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post #3 of 9 (permalink) Old 09-23-2013, 07:07 PM
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No way are the Twink and Elise the same filter. I have 2 of one and 1 of the other - they're way different sizes!

Twink HP2009
Elise HP1003

'67 Elan S3
'72 Europa TC
'05 Elise
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post #4 of 9 (permalink) Old 09-24-2013, 04:20 AM
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Quote:
Originally Posted by Roger View Post
No way are the Twink and Elise the same filter. I have 2 of one and 1 of the other - they're way different sizes!

Twink HP2009
Elise HP1003
Did you read the link in post #2?
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post #5 of 9 (permalink) Old 09-25-2013, 09:19 AM
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Ray at RD Enterprises supplies a MANN W 719/15. His reference number on his part sticker is 036 E 6030. The filter length is approximately 4 3/4", so check your clearance. Outside diameter is ~3 1/8". Have been running these in my Elan Plus 2 for about 20,000 miles with no issues.

Dave Bean supplied a shorter filter, but I can't recall brand off hand. Might have been Valvoline or Purolator; was a white, red & blue box from memory.

Been using the MANN as I figured bigger is better, but no other science behind my choice. I think the Bean supplied one is in the boot as backup.

HTH
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post #6 of 9 (permalink) Old 09-29-2013, 10:15 AM
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Found the Dave Bean supplied filter. It is a Motorcraft EFL 500

Other numbers on the filter:
1 070 523
97MM 6714 B1A

This filter is only about 3" long.

Stu
Calgary AB
'69 Elan Plus 2
'00 Esprit V8
'87 BMW M6 & '84 BMW R100RT
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post #7 of 9 (permalink) Old 11-21-2013, 05:43 AM
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Followup related question. I have a Fram DG3682 from a while back that I bought for my '71 Elan +2S. Not sure why, but it must have been on some list. The one I had used before was a PH2870A, which is what is on most lists. Took me a while, but I figured out the difference. The PH2870A has a 22 PSI relief valve setting, and the 3682 is listed as "none", or 0 PSI.

When you look at the "supported vehicles" on web sites, they both show the same cars, (VW Beetle, Ford Cortina, etc), except for Lotus, which is only shown for the 2870A. What is the impact of relief valve difference and does it matter? Why would it not matter to a 1970 Ford Cortina, but matter for the very similar engine in the Elan?
Thanks
Dave

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Last edited by DaveM; 11-21-2013 at 05:48 AM. Reason: Forgot signature
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post #8 of 9 (permalink) Old 11-21-2013, 06:01 AM
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The relief valve inside the filter is for stupid people that don't change their oil filters regularly. So, when your oil filter gets so dirty that it can no longer pass/filter oil, the oil goes around the filter, through the bypass valve and into your engine...the theory is that dirty oil is still better than no oil for your engine.

Depending on the kind of person you are, choose your filter...I aint stupid...
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post #9 of 9 (permalink) Old 11-22-2013, 04:11 AM
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Yes, agreed. And since Elan oil pressure typically runs at 35-40 lbs, there is a basic concept I'm missing I think. 35-40 lbs is greater then both 0 and 22. So when is that threshold used? And why would all the charts be so adamant that the 3682 is not compatible with the lan engine?
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