Hi Chris
The orifice I was talking about (or actually 2 orifices) go:
- on the centre top hose connection to the carbon canister
- on the other end of this hose where it plugs into the carburetor.
Looking through one of the vendor's catalogues, it looks like they show only
the one at the carb for '75&'76, and the two on '77 to '80. However the '76
BL manual I have shows both. My car has neither.
Bob
_____
From Chris King [mailto:cbking at alum.rpi.edu]
Sent: July 5, 2004 8:05 PM
To: engl@accesscomm.ca; spridgets@autox.team.net
Subject: Re: Questions on a '75 Midget
Hi Bob. Welcome to the list. Yes, 1500's are on the list too. CHeck out mine
at the site in my sig.
<snip>
I'm not sure on the orifice thingy - I removed most of the emissions stuff
on my car in the quest for more power. But on the back of the filter
housing, you're talking about the 1 1/2" tube? If so, this was a heat riser
valve. There was a round housing with a flapper valve on a bi-metallic
spring. One end wasa connected to the air cleaner by a short length of
rubber hose. The other end wasconnected to a heat-shield type of bit over
the exhaust manifold by a length of flexible aluminum tube. This brought
warmer air into the carb when the engine was cold to warm up the engine
quicker on cold days.
<snip>
Good luck!
-=Chris
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