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ET: Engine (Twin) The most miserable task


vibrac

Well Known and Active Website User
VOC Member
After a frustrating time in the workshop today I award this to:
Putting a rocker pushrod into an assembled engine (tank off thankfully)
My method is to use a pair of surgical forceps this enables me to try and 'swing' the bottom of the pushrod around in the timing chest with the top end in the rocker adjuster hole. If I cant, then there is a chance the bottom is in the rocker recess, horray! Doing it at maximum lift seemed the best. I was only fitting the front inlet I would hate to try the front exhaust when trying a vertical 'drop' is not an option.
Any advance for the most miserable task?
 

bmetcalf

Well Known and Active Website User
VOC Member
I try to visualize where the cup is and feel around with the pushrod, using forceps. Maybe take a peek down the tube with a penlight. If the ball end is oily, it will stick in the cup a bit and you can feel it as you lift the follower. I check by rotating the engine very slowly to see if the pushrod rises up normally. I hope this isn't telling granny anything.
 

vibrac

Well Known and Active Website User
VOC Member
I try to visualize where the cup is and feel around with the pushrod, using forceps. Maybe take a peek down the tube with a penlight. If the ball end is oily, it will stick in the cup a bit and you can feel it as you lift the follower. I check by rotating the engine very slowly to see if the pushrod rises up normally. I hope this isn't telling granny anything.
You might as well tell Granny after all we are using her knitting needles :D
 

vibrac

Well Known and Active Website User
VOC Member
Its not the light Bill I even have a remote TV camera, its the space the only sure way is with the cams out anyway the Russian roulette is over now, but its a job I hate
 

Bill Thomas

Well Known and Active Website User
VOC Member
I should have made it a bigger photo !, It's not a light it's a Petrol tank, So we can play without the proper tank on . Cheers Bill.
 

greg brillus

Well Known and Active Website User
VOC Member
The biggest issue is trying to hang on to and align the pushrod. When I built the racer, I had to get shorter pushrods made, as even the available short ones were still too long, and this made installation that bit harder. I found if I used pieces of plastic straw, or it might have been short lengths of heatshrink pressed onto the end of the pushrod, this gave me something to hold onto, that was skinny enough to pass through the tappet adjuster hole in the rocker. Once I was satisfied it was sitting in the socket of the follower, I think I slipped a screwdriver or small diameter piece of rod down the straw so I could slide the straw off the end of each pushrod. It basically gave me an extension like handle so I could move the pushrod around and like Bruce said about being able to lift the follower with a drop of oil or grease providing some suction to the ball end. I had to do this because when you slid the pushrod through the hole in the rocker, it passed down that much that you could not hold it with a pair of pointy nose pliers, as per a stock set up. Might be worth a try.............
 

timetraveller

Well Known and Active Website User
VOC Member
And with a Comet and one of the new Chicago Section Gasket one only has to undo the screws etc. With a twin the exhaust system has to be removed as well which is more of a pain in the posterior.
 

deejay499

Well Known and Active Website User
VOC Member
The other miserable task is putting another brake drum on. It was particularly hard when I had 13” wheels on! Patience and skinned knuckles being the order of the day.
 

vibrac

Well Known and Active Website User
VOC Member
Or installing the earlier type fuel tank with the small cut away on your own, Oh and with 3/4 of a tank full of fuel................:cool:.
After the debarcle of the pushrod I struggled with the carb cable and the tank after half an hour I realised I had the small cutaway tank from the Comet not the large cutaway from the twin .
Perhaps its time I had a Red Comet....
 

greg brillus

Well Known and Active Website User
VOC Member
Yep, once the tank goes down and crushes the throttle cable it all goes downhill from there...............o_O
 

vin998

Well Known and Active Website User
VOC Member
VOC Forum Moderator
The easy method I found to fit the tank on my Shadow with a small cutaway is:
Disconnect the fuel pipe from the front carb. Then undo the carb clamp bolt, mark the carb & manifold with felt pen so later on it goes back on at the same angle and slide the carb off and let it drop down still with the cables attached. Put a cut down sock over the oil tank neck to protect the fuel tank paint and then put the tank on. You can manouver the cables such as clutch etc as the carb is out the way. Once the tank is on refit the carb and remove sock from the oil filler neck. Takes not much longer than it took type this out.
 

peter holmes

Well Known and Active Website User
VOC Member
I know there is a drive to ban plastic, but without any doubt the best way to protect a fuel tank when fitting over the oil filler neck is a cut down plastic drinks bottle, choose one with parallel sides, remove the top and bottom whilst also cutting to the desired length, slit vertically and join back together using electrical insulation tape making it a tight fit round the oil filler neck, IMHO a far superior method than using a smelly old sock, or even a new one. Once used you can tuck it away in your designated Vincent toolbox for future use.
 

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