Deleted
Deleted Member
Posts: 0
|
Post by Deleted on May 13, 2011 20:12:49 GMT
This isn't what I am referring to. The hose I am talking about leads from the back of the RH elbow and connects to a pipe from, I assume, the crankcase.
The same spot on the LH elbow has been left as a blanked off casting.
|
|
|
Post by johnwp5bcoupe on May 13, 2011 20:44:14 GMT
Normally the breather goes to the center of the air filter, have the pre elbow carb sections been fitted left to right and what was the AED input is now your input for the breather? I am assuming LH is passenger side?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on May 13, 2011 21:02:55 GMT
No, John the original AED input hole was blocked off by me when I converted to manual choke so the elbows haven't been reversed. I mean LH to be the passenger side from a frontal perspective. The pipe on the back of the RH elbow is hidden from view. Thinking about it, that pipe must be subject to some suction as the carb piston on that side is much dirtier than the piston on the other side as,I assume, my mystery hose is sucking in dirty unfiltered air from the crankcase just inches away from the RH ( from the front of the car) carb! I assume the air from the rocker covers via the flame traps leads into the carbs near the inlet manifold. Warwick, I need you wisdom on this one. Am I the only one with a strange orifice
|
|
|
Post by Colin McA on May 13, 2011 22:29:44 GMT
for the AED there is a take off from the carb-air filter housing elbow. This goes to the exhaust where I would this that it is heated and drawn up to the AED.
|
|
|
Post by johnwp5bcoupe on May 14, 2011 5:30:07 GMT
I think you have a one off At least where it should go the crap is filtered before the carbs. The pipe from the AED to the elbow is a fuel out Colin it just gives enrichment while the engine is cold. The heated air from the exhaust manifold is used to heat the bi-metal strip which switches off the fuel to the outlet!
|
|
|
Post by mcgill on May 14, 2011 5:47:54 GMT
Just another thought on this matter. I changed the engine breather today and fitted a new breather hose and cleaned out the flame traps. There is another hose attached to the Air filter but this one has an outlet on the back of the RH air intake elbow as you look at the car head on. It's quite a large outlet, about 1/2" bore. Is it sucking or blowing as it is on the clean air side of the air filter element? Youre on about this pipe,connects to back of carb elbow.. other end exhaust manifold....Then theres another pipe the same on the manifold further along for aed.Is it a built in 69 thing ??
|
|
|
Post by johnwp5bcoupe on May 14, 2011 7:07:27 GMT
Well done you cant beat a picture That is how mine is and it is 1969 It's a bit like asking someone to draw a picture on a black board when facing the other way It's quite funny I still have an AED but none of the books I have even mentions one I found this on a very good site The Rover Car Club Auckland www.rover.org.nz/manuals/aed/AED2.htmwww.rover.org.nz/pages/home.htm
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on May 14, 2011 9:21:50 GMT
McGill and John thanks to you for putting this matter to rest I removed my AED years ago and simply left the pipe nearest the front of the engine open. I didn't associate the rear pipe with the AED because, until today, I'd never seen a drawing with all the componants. I'd always assumed that it was to do with crankcase ventilation. I will immediately seal off the rear pipe as it is redundant but should I put some sort of cap over the lagged pipe? Thanks again for your help Guys.
|
|
|
Post by mcgill on May 14, 2011 9:33:21 GMT
i wouldnt bother blocking it up,its not for aed,its just to warm up the engine quicker on them cold and frosty mornings
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on May 14, 2011 9:43:44 GMT
Have you got any idea how it works if there's no air flow? Surely it's not taking unfiltered hot exhaust gases straight to the unfiltered side of the carb and in Johns link it is shown as part of the AED system Is it me
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on May 14, 2011 9:50:58 GMT
I think I've just worked it out.
It's a constant flow system where air is drawn by the Inlet manifold through the AED from the front pipe connected to the hot air pick up on the exhaust manifold and through the hose on the back of the elbow. The pick up is attached to the outside of the exhaust manifold and therefore is only getting the heat as the engine warms up and is not actually in direct contact with the gases.
Without the AED, there is no airflow so I might as well block it up as it serves no purpose in a non-AED car.
|
|
|
Post by johnwp5bcoupe on May 14, 2011 10:01:55 GMT
i wouldnt bother blocking it up,its not for aed,its just to warm up the engine quicker on them cold and frosty mornings I agree with Dave not to bother as long as the AED side is blocked otherwise you are sucking unfiltered air into the carb, this arrangement was intended for the AED and on later models the elbows are different. I like this we are talking about AED's Enter Phil Stage Left
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on May 14, 2011 10:23:40 GMT
The old lagged AED front pipe is open so I've been drawing unfiltered air in though the exchanger since 12th August 1990 to be exact!
Now, what did i do with that cork?!
|
|
|
Post by Phil Nottingham on May 14, 2011 13:55:00 GMT
I removed the exhaust pick up plate entirely - you have to put the setbolts back in though as some of them go right through to the inside of the manifold
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on May 14, 2011 15:49:21 GMT
Yes, that would be the neatest solution.
I've closed up the intake hole in the elbow and at least I now know why the carb piston is much dirtier on that side.
I really had no idea of all this AED plumbing until Johns link and perhaps I should have taken a closer look in the last 20 years!
|
|
|
Post by Colin McA on May 14, 2011 17:36:44 GMT
I originally had some of the engine parts powder coated including these elbows. It was only when I was getting to the runnig stage that I realised that I had the surplus hole. I got a drivers side one without the hole and didnt have to worry about a plug etc.
Colin
|
|