Plus 2 heater hose diameter

[vernon.taylor]

Salut

Checked the archives but couldn't find an answer - anyone know the heater hose diameter for a Plus 2, please?

Looks like the diameter is larger at the heater outlet and then a standard 1/2 inch at the thermostat and water pump?

Merci

@+

Vernon

[TeeJay]

Hi Vernon.
Just popped into my garage.

Heater Outlet at 15.8 mm.
Water Pump At 13 mm.

Will upload some photos shortly.

[TeeJay]

Just resized the photos, hope they are ok.

Note my +2 is a 1968.

[vernon.taylor]

Fantastic, thanks Trevor.

@+

Vernon

[CBUEB1771]

I always thought this was an annoyance on the +2, not being able to use a length of standard 5/8" bore heater hose. I was about to make up a hose barb with 5/8" OD for the water pump housing until I found that Steve at Lotus Marques in Australia has them:
http://www.lotusmarques.com/parts/catal ... pump-parts
I had a long list of parts I needed from Steve so I added a couple of these hose barbs to my order. Interestingly the combination of the 5/8" barb and the correct BSPP thread is very unusual, I could not find one at any hydraulics suppliers. Easy enough to make on a lathe but I like to save time.

[vernon.taylor]

Good find, Russ. Cliveboy is looking into making up silicone heater hoses for the +2 so I'll probably go his route.

@+

Vernon