Lotus Elan

Ambient temperature probe location

PostPost by: davieroy » Thu Jan 10, 2019 5:25 pm

Just discovered my gauge has no probe and tube (has obviously been cut off the gauge a long time ago). I have ordered a new unit but was wondering where exactly to route the tube and probe. Any help gratefully received!
davieroy
New-tral
 
Posts: 5
Joined: 07 Dec 2018
Location: North Yorkshire

PostPost by: mbell » Thu Jan 10, 2019 7:01 pm

Welcome. It is fasten in the front of the nose somewhere near the air box I think. The tube runs down the ledge of the fibre glass body that just above the chassis and under the carbs. I think it is fastened with screw on black plastic wire fasteners on my car.
'73 +2 130/5 RHD, now on the road and very slowly rolling though a "restoration"
mbell
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1258
Joined: 07 Jun 2013
Location: Austin, TX (UK Ex-pat)

PostPost by: elated » Thu Jan 10, 2019 7:46 pm

(Presumably to avoid the weight & cost of another fastener) I believe that one of the filter box fixing bolts was used to secure the terminal bulb.
Gordon
elated
First Gear
First Gear
 
Posts: 41
Joined: 21 Jan 2011

PostPost by: rgh0 » Fri Jan 11, 2019 9:17 am

A couple of pictures of the mounting for the sensor on my 73 plus 2S 130/5.

It mounts in a brass strip formed into a loop and retained by the top bolt of the support strut into the air cleaner body at the front

cheers
Rohan

r0013791-compressed.jpg and

r0013792.jpg and
User avatar
rgh0
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 6837
Joined: 22 Sep 2003
Location: Melbourne, Australia

PostPost by: davieroy » Fri Jan 11, 2019 1:57 pm

Thank you all, this really helps. Do you have a picture of where the tube runs in the engine bay and out of which hole in the bulkhead it comes out of?
davieroy
New-tral
 
Posts: 5
Joined: 07 Dec 2018
Location: North Yorkshire

PostPost by: rgh0 » Fri Jan 11, 2019 11:50 pm

Mine came out through a hole big enough for the bulb to fit through and then with a rubber grommet to seal it on its own below the LH bonnet lock and followed the wiring loom down to the nose along the LH side. You can see it in the bottom RH corner of the attached photo

cheers
Rohan

r0013735.jpg and
User avatar
rgh0
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 6837
Joined: 22 Sep 2003
Location: Melbourne, Australia

PostPost by: prezoom » Sat Jan 12, 2019 3:31 am

My bulb was just behind the lower lip of the grille opening in the center. The bourdon tube was routed out the right side of the fire wall, even though the gauge is on the left side of the dash. Currently what remains of the bourdon tube is currently coiled up under the dash awaiting a proper repair.
Rob Walker
26-4889
50-0315N
1964 Sabra GT
1964 Elva Mk4T Coupe (awaiting restoration)
1965 Ford Falcon Ranchero, 302,AOD,9",rack and pinion,disc,etc,etc,etc
1954 Nash Healey LeMans Coupe

Tread softly in the grease mud, for there lurks the skid demon
prezoom
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1115
Joined: 16 Mar 2009
Location: Escondido, California

PostPost by: Bud English » Sat Jan 12, 2019 5:40 pm

My '70 +2 (Fed) has the same hole location and routing shown in Rohan's photo, seemingly original. The bulb was located in the nose, but simply clamped to the lower fiberglass behind the grill. I don't know if that location was original or not.
Bud
1970 +2S Fed
"A common mistake that people make when trying to design something completely
foolproof is to underestimate the ingenuity of complete fools."-Douglas Adams
User avatar
Bud English
Fourth Gear
Fourth Gear
 
Posts: 845
Joined: 05 Nov 2011
Location: Winnemucca, NV, USA

PostPost by: DavidLB » Sat Jan 12, 2019 9:28 pm

thee bulb was fixed just inside the radiator opening and clipped the base just under the lip I can take a photo if you would like me to regards david
DavidLB
Second Gear
Second Gear
 
Posts: 185
Joined: 23 Apr 2010

PostPost by: davieroy » Sat Jan 12, 2019 9:35 pm

A picture would really help. Thanks, Roy
davieroy
New-tral
 
Posts: 5
Joined: 07 Dec 2018
Location: North Yorkshire

PostPost by: Robbie693 » Sun Jan 13, 2019 12:50 am

Mine comes out of the same hole as the speedo cable, just below the offside bonnet catch then runs down to the body ledge on the inner wing under the carbs, passes under the radiator side bracket into the nose and is then cable tied to the air filter trunking until it gets to the bracket on the filter case as Rohan has described.

Robbie
User avatar
Robbie693
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1593
Joined: 08 Oct 2003
Location: UK

PostPost by: DavidLB » Sun Jan 13, 2019 10:52 am

Hi Roy here is a pic of the outside air temp probe this is the correct position as this car was sold by me when I was a dealer back in the day and is unmolested the clip is none original but fixed in the original position Kind regards David
Attachments
img_1191.jpg and
DavidLB
Second Gear
Second Gear
 
Posts: 185
Joined: 23 Apr 2010

PostPost by: davieroy » Tue Jan 15, 2019 3:30 pm

Again, this really helps. Many thanks, Roy
davieroy
New-tral
 
Posts: 5
Joined: 07 Dec 2018
Location: North Yorkshire

PostPost by: rgh0 » Wed Jan 16, 2019 11:55 am

DavidLB wrote:Hi Roy here is a pic of the outside air temp probe this is the correct position as this car was sold by me when I was a dealer back in the day and is unmolested the clip is none original but fixed in the original position Kind regards David



HI David
I am sure it was original at some time on some cars
So what model and what year ???? Lotus are notorious for un-documented changes, so more details are really needed. This site does a great job of teasing out all those variations where possible

cheers
Rohan
User avatar
rgh0
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 6837
Joined: 22 Sep 2003
Location: Melbourne, Australia

Total Online:

Users browsing this forum: tonyr27 and 10 guests