Triumph T140ES us spec 1982

stockie2

Joined
Apr 19, 2011
Messages
328
Mate of mine has just bought a nice original 14000 mile bike, but the tank has had a respray. The tank is tatty and I am not sure if it has the right colours? It is candy type red with some black smoking and a gold pin stripe. Can anyone assist with colours or a photo. This has the latter style tank shape, like a T160.

Oh and on the Bing carbs, what is the initial setting for the idle mixture screw, please!

Cheers Richard
 
Hello LAB
And thank you for your sharing, you really are on your game, great stuff. I searched high and low for the Bing idle screw setting to no avail. Got her going to day and I know the carbs are not held in high esteem, but they do make a Bonnie run nicely. After cleaning and checking the diaphragms I found the o-rings around idle mixture screws were perished. I set the mixtures at 1/2 turn out and she seemed a little lean, so your recommendation makes perfect sense.
I appreciate the photo of the Executive, the paint colours are reversed from the bike we have, but our ES is a US delivery 82 model. with stainless guards and the shorter side panels that do not cover the carb cables. The bike is a standard electro, do you have any original photo's of one of these? The bike has shoulderless alloy rims too!

Cheers Richard
 
stockie2 said:
I appreciate the photo of the Executive, the paint colours are reversed from the bike we have, but our ES is a US delivery 82 model. with stainless guards and the shorter side panels that do not cover the carb cables. The bike is a standard electro, do you have any original photo's of one of these?
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I haven't been able to find anything in any of my Triumph books that matches the description.
 
AC they are actual Bing, but made by Amal in Spain. So the labels actually have the two brands, together. They are a 36mm at the choke nearest the engine, but I think they are none as 32mm. They are a CV type and similar to BMW fit ups. After googling them, they are used a lot on Rotax engines used in micro lights?
Further to my last post, we have pulled the top end of the engine down, she smoked pretty bad and had a knock sound. The engine is on standard bore, with 7.9:1 pistons with cross hatching on the thrust surfaces. The pistons and bores look very good, but one oil ring is missing approximately 1/3 of it's circumference. I can only deduce the PO (dunce) was ham-fisted and had re-ringed the engine?
Piston ring lands look fine, so we are re-ringing and honing and putting in some new guides, they are just showing wear.
Oh and some kits through the carbs too.

Cheers Richard
 
I have a 1982 T140ES, all original with the amal carbs, I'm new to this website so if someone tells me how to add pictures to posts I'll put a picture on so you can see the paint work
 
L.A.B. said:
http://www.vintagebike.co.uk/pictures/1982-triumph-bonneville-executive/


stockie2 said:
Oh and on the Bing carbs, what is the initial setting for the idle mixture screw, please!
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= 3/4 of a turn out.
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Or..... you could try a Colourtune and get the pilot mixture spot on ….yes they do work :!: :)
 
adam.piksa said:
the carbs are called amal concentric mk2s
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Yes, but, late US market spec. models had Bing CV carbs (usually covered by extended side panels).

http://www.classic-british-motorcycles. ... ville.html
NEW CARBS
Every tightening emissions standards forced a move from the Amal Concentric MkII carburetors to the 32mm German-made Bing Type 32 CV (Constant Velocity) carbs for the US market. Early T140Es & T140ESs & all home-market 1981 Triumph Bonneville Executive models were delivered with the Amal MkIIs.
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mine has the shorter side panels that doesnt cover the carbs, but the paint work is the same
 
stockie2 said:
...had a knock sound...
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Make sure to check for looseness of the alternator rotor on it's central steel hub. Pinch it up in a vice with a heavy washer on each side, grasp it with a large pair of water pump pliers, and see if the outer will rotate on the inner.
 
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