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Messages - brooksy

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1
British Bikes / Re: D7 engine dies when throttle opened.
« on: September 10, 2009, 06:13:13 PM »
Just a thought but have you checked the jets. I had a similar problem with a Greeves Challenger some years ago which turned out to be the wrong jets which flooded the engine.

I hope this is useful.

Good luck

Brooksy

2
British Bikes / Re: BSA B31 clutch removal
« on: July 08, 2009, 08:51:07 PM »
Hi,

I'm sure it is covered by the manual. I had the book when I owned a B33. I'm afraid I passed the manual on with bike though so I can't look it up. The tab washer could be splined to fit on the shaft which might stop it coming off.

Brooksy

3
British Bikes / Re: T90  Problems
« on: July 05, 2009, 07:19:06 AM »
Well, having spent a hot day in the Father-in-Law's garage progress has been made. I removed the rocker boxes and watched the pushrods move. The inlet and exhaust rods on the same pot were rising and falling together. The last job I did before was to set up the engine timing on the marks which resulted in the metallic banging noise. During the week the Father-in-Law removed the head and found the inlet valves damaged - they have been hitting the exhaust valves. I established that the timing pinion on the inlet camshaft was put on in the wrong keyway. There are three keyways on the pinion. Before when it was banging and popping the settings must have been a guess. All that needs doing now is to put it back together and fire her up.
The real lesson to be learnt here is to thoroughly check the bike over before you buy it. I don't think my Father-in-Law is ready to hear this at the moment after the grief he has had - espescially from the Mother-in-Law.

Thanks to everyone who offered advice.
Brooksy

4
British Bikes / Re: T90  Problems
« on: June 22, 2009, 07:10:38 PM »
Thanks for all the suggestions - I'll try them out and let you know of the developments

Cheers.

5
British Bikes / Re: T90  Problems
« on: June 21, 2009, 08:03:25 PM »
Hi,

Thanks the bike has been standing. The Father in Law has had the rocker box off this afternoon and can't see anything wrong, but we haven't thought of this. I am wondering whether a valve is sticking open and then snapping shut. I guess the only thing to do is to take the top off.

The original problem was banging an popping when acclerating -what do you think?

Thanks
Brooksy

6
British Bikes / Re: T90  Problems
« on: June 21, 2009, 05:48:18 PM »
Sorry, I knew what I was trying to say.

I reset the valve timing to the marks as I have heard this the only real way of doing it. The manual says they only line up every 94 revolutions so I just removed the intermediate pinion and lined it all up again.

The noise is when you wind the the crank forward and the inlet valve opens and then shuts with a bang as if the the cam profile is very sharp. My t140 doesn't make a noise like this and opens and closes smoothly. This makes a metallic sound as if something is hitting the valve.

Thanks for your help
Brooksy


7
British Bikes / T90  Problems
« on: June 21, 2009, 01:16:05 PM »
Hi,

My father in law has just bought a T90 (68) which doesn't run right
The engine runs on tick over but pops, bangs and misses when revved up.
I have fitted a Boyer as the old electrics looked suspect but to no avail.

I have checked the carb and all jets are correct and no obvious air leaks

I have also just reset the valve timing but the inlet valves are noisy when you turn the engine over - they seem to shut violently with a lot of   noise.                                                                                          
Has anyone any suggestions please before I strip the engine and start from basics.

Thanks

Brooksy

8
British Bikes / Re: T140 E Ignition timing
« on: May 31, 2009, 07:21:57 PM »
L.A.B,

Yes it did have a belt drive fitted although I changed it a few years ago. (The bike was owned by a work colleague for about 10 years before I bought it from him). The rotor lines up at 38 degrees btdc, it was just the crank marks that fooled me. The motor didn't vibrate at all before  which really surprises me now. Just goes to show you don't know what you are getting.  If I had known before I put it back together, I might have done something about it. I'll see if it runs next.

Thanks for your assistance.

Brooksy

9
British Bikes / Re: T140 E Ignition timing
« on: May 31, 2009, 06:23:18 PM »
L.A.B,

First of all thank you for your assistance. I have just been and looked again following your comprehensive information, for which I am very grateful. I have located the 2nd slot however, the pistons are still at bdc on the compression stroke (inlet valve just closed). The bike was a runner when I bought it and has a Boyer mk3 fitted. The reason I called this a breather is because it has a breather fitted through a bolt which extends into a tube with a hose on. I guess that's not correct so I'll get the right bolt.  The thing that confuses me most is that the bike was a runner when I bought it. Apart from some really bad oil leaks it. Could I time it from the pistons with a dti and timing disk and disregard these marks.

Thanks for your help.

10
British Bikes / T140 E Ignition timing
« on: May 31, 2009, 02:44:43 PM »
Hi,
This is my first post. I stumbled on this brilliant website whilst trying to solve a problem with my 1978 Triumph T140E. I have looked at the other posts which don't answer my question. I am reassembling the engine and am about to do the ignition timing. I have located the notch (slot) on the crankshaft but this appears in the crank case breather hole at the back, when the the pistons are at the bottom. Is this right? and if so how do I time the ignition using this method when the pistons are down at BDC.

Grateful for any help.

Brooksy

Broosy

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