Lotus Elan

Oil Temp gauge sender unit location

PostPost by: Cymru » Mon Mar 05, 2018 4:45 pm

Hi all,

I know this is probably a noob question - but -

I am fitting an oil temp gauge the question is where do I attach the oil temp sender unit?

Many thanks,
Cars:
Restoring
69 Elan +2

Running
73 Europa Special
Cymru
First Gear
First Gear
 
Posts: 29
Joined: 02 Aug 2017
Location: Canada

PostPost by: 1owner69Elan » Mon Mar 05, 2018 5:09 pm

A typical approach is to use a sump plug that accepts the sender.
'69 Elan S4 SE
Street 181 BHP
Original owner
1owner69Elan
Fourth Gear
Fourth Gear
 
Posts: 772
Joined: 16 Jun 2015
Location: Napa, California

PostPost by: john.p.clegg » Mon Mar 05, 2018 5:32 pm

The only problem with that the wiring could be easily damaged?, Especially if you live in an area with speed bumps..
How about a Tee with the oil pressure sender ?

John :wink:
User avatar
john.p.clegg
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 5682
Joined: 21 Sep 2003
Location: Manchester

PostPost by: MarkDa » Mon Mar 05, 2018 6:29 pm

I'm not sure that taking a temperature at a point of no flow will really tell you what you want.
There must be a plug into an oilway with moving oil passing that could accept a sender?
Or with more work put a sensor through the side of the sump.
MarkDa
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1141
Joined: 15 Apr 2017
Location: Stroud

PostPost by: RichardHawkins » Tue Mar 06, 2018 11:17 am

Cymru,

How about fitting an oil cooler sandwich plate betwee the oil pump and oil filter, then using one of the tapping points for your temperature sender, and blank off the other tapping point.

Richard Hawkins
RichardHawkins
Fourth Gear
Fourth Gear
 
Posts: 759
Joined: 05 Jul 2008
Location: Lincolnshire U.K.

PostPost by: Cymru » Tue Mar 06, 2018 3:48 pm

Hi all,


Thanks for all the information - food for thought.

Much appreciated.
Cars:
Restoring
69 Elan +2

Running
73 Europa Special
Cymru
First Gear
First Gear
 
Posts: 29
Joined: 02 Aug 2017
Location: Canada

PostPost by: CBUEB1771 » Wed Mar 07, 2018 1:46 pm

MarkDa wrote:I
There must be a plug into an oilway with moving oil passing that could accept a sender?


This could be the best solution, the are at least two drillings into the oil gallery on the distributor side of the cylinder block that might be used. The key here is to have the sensing end of the temperature sender just barely protrude into the gallery to give minimal blockage to flow. I would look at using the 1/4 NPT port where the oil pressure sender is mounted. I would see if something could be worked out with a tee or cross fitting that would accept both the temperature and pressure senders. The pressure sender does not need to be in direct contact with flowing oil.
Russ Newton
Elan +2S (1971)
Elite S2 (1962)
User avatar
CBUEB1771
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1684
Joined: 09 Nov 2006
Location: Boston, Massachusetts USA

PostPost by: USA64 » Wed Mar 07, 2018 3:48 pm

Just a thought, the oil does a lot of cooling as well as lubricating so it will not be the same temperature at all points. You would want the average and that means the sump only or possibly the filter.
We are supposed to be having fun, are we not?
USA64
Second Gear
Second Gear
 
Posts: 148
Joined: 10 Dec 2017
Location: USA NJ

Total Online:

Users browsing this forum: No registered users and 14 guests