Heater hose

[GHill]

Hello All

A few questions on heater hose please?

How does the heater hose stay connected to the engine block as my block seems to just have a hole?

Does the hose connect to the two points in the photographs below (I'm not too sure as this hose was loose in the engine bay?

Heater hose connections - engine block?

Hearing hose - to
Heater matrix?

Lastly does anyone know what this nut is for? I found it between the frame and the body not connected to anything?

Strange bolt?

Thanks as always

Gareth

[billwill]

Can't make out your photo, top one almost looks like the vacuum pipe take off for the Plus 2 brake servo.

~~~~~~~~~~~~~

The lower heater hose connects to a hole in the cooling system very near where the lower main cooling hose connects from the timing case at the front of the engine to the bottom of the radiator.

The lower hose take off (brass adaptor) can be seen in this photo:


THe upper heating pipe connects to the heater control valve which is (to be) screwed into one of the two side holes just underneath the thermostat housing (the removable top of which has the main cooling hose to the top of the radiator). Usually the heater valve is screwed into the rearmost of the two holes (the other hole is for the temperature gauge sensor) but I personally have the valve in the front hole.
The heater control valve and heater hose pipe can be seen near the bottom edge of this photo:

[GHill]

Hi Bill

Thanks for the reply.

In the first pic you are right the black hose secured with the jubilee clip goes to the servo. What about the hole behind it in the engine case?

Regards
Gareth

PS yes it's a plus 2S130

[Higs]

That hole in the breather which connects to the airbox on the carbs.

Richard

[billwill]

Links to existing photos on this site, added to the message above.

[Grizzly]

Might be the angle of the picture but is there a second steel heater pipe coming through the bulkhead? (Pic 2)

On the first picture, the pipe with the Jubilee clip on is 100% the servo, the Grommet in the head is where the oil breather pipe pushes into and that stays attached to the air box backing plate.

The picture of a Bolt if i'm reading the top correctly says UNC ? which narrows where its came from down quite a bit as most of the Bolts are UNF. Its hard to judge the size of it or the length then which side did you find it between the chassis and the body? (carb side or exhaust side) if its 3/8 unc i'd be checking all the chassis bolts are in place but if its smaller than that it could be from the engine mount, oil or Fuel pump etc?

[types26/36]

Lastly does anyone know what this nut is for? I found it between the frame and the body not connected to anything?
Gareth

If it is a unc it could be from the carb side engine mounting......maybe someone dropped it....couldn't find it and just fitted another one.

[GHill]

Cheers Guys

Will take a look at the engine mount - I have a spider chassis - will that make a difference to where the bolt goes? I found it near the carb side!

Does anyone have a picture of the how the oil breather pipe connects to the engine and the air box.

Hi grizzly - yes there is a pipe through the bulkhead - also I have a pipe running from the connector in bills PIC ( bottom right of the engine as you look at the PIC) to the top of the engine near the middle ( the middle of billsvsecond oicture ) is this right or has the PO just cheated and essentially bypassed the heater (which I know doesn't blow hot air)

Thanks guys

Gareth

[types26/36]

Will take a look at the engine mount - I have a spider chassis - will that make a difference to where the bolt goes? I found it near the carb side!Gareth

This thread shows a spyder carb side engine mounting, basically the block has four 5/16 unc bolts, its hard to tell but in the Spyder picture it looks as though they have used four allan headed bolts but it doesn't make any difference whether a hex head or allan headed bolt is used.
lotus-twincam-f39/spyder-engine-mounts-t14525.html#p68604

[GHill]

Cheers Brian

Good thread - I have bolts all in the right holes so probably a spare!

Thanks
Gareth

[Grizzly]

Hi grizzly - yes there is a pipe through the bulkhead - also I have a pipe running from the connector in bills PIC ( bottom right of the engine as you look at the PIC) to the top of the engine near the middle ( the middle of billsvsecond oicture ) is this right or has the PO just cheated and essentially bypassed the heater (which I know doesn't blow hot air)

What i ment is there should be two metal pipes coming through the bulkhead from the Matrix on a +2 (Pic2), its very common for the solder to dry out and one to fall off (maybe why its been bypassed)

P9210011web.JPG (79.97 KiB) Viewed 1712 times

Breather pipe, its pushed in to the engine but Jubilee clipped onto the backing plate.

[TeeJay]

Hi Gareth.

re "Does anyone have a picture of the how the oil breather pipe connects to the engine and the air box."

Not sure what your car / carbs are, but use the following link..
Just select your car from the Left Hand side, then engine/Induction/Airbox.

link:- http://www.rdent.com/manuals/index.html

[mbell]

FYI as far as I know you can't buy new replacement breather pipes. So you will need to make some thing up to do the job.

Quite a few post on here on the topic if you can find them. Quite often breather tube v drain pipe into a catch can debates.

[Grizzly]

As above.......If you do have to make a breather this is the idea design but with a catch tank on the end so the oil vapours don't get recycled into the engine.

I'd say buy one from here but the shop is shut at the moment.
http://www.cliveyboy.com/product/lotus- ... tee-piece/

[GHill]

Cheers teejay & Grizzly

The rdent website is an excellent resource thanks for that!

This thread has actually helped me understand much more about my car (which I've had for 3 months or so)

1. It had a very oily engine bay and chassis on the carb side - my research up till yesterday put this down to a possible high pressure oil pump
2. When changing the coil I decided to clean as much as I could see with wd40 and rags and found a strange heater pipe

Heater hose

3. I've come to the conclusion that the PO had used some heater pipe and wedged it into the engine block and so oil vapours had been running down the pipe onto the chassis and engine bay in general causing all of the mess
4. So a mystery appears to be solved now I need to construct a collector bottle system
5. Researching this it appears to be that a bottle in the nose section of the car is a good bet.

Cheers all the power of these forums proven again - thanks all

Gareth