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1979 T140E into Rickman

Re: 1979 T140E into Rickman

Postby grandpaul » Wed Mar 29, 2017 6:27 am

That's a nifty classic dual sport!

You can be certain you will never be parked next to another one that looks just like it.
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Re: 1979 T140E into Rickman

Postby mudplugger » Wed Mar 29, 2017 12:08 pm

i am very happy with it, but I have to pull the engine out. it is blowing out white smoke and smells of oil when shutting off, and the oil pressure seems to stay at 20lb or just below. all part of the process I suppose, I have probably made a silly error somewhere as the engine was completely re conditioned, need to find some time soon to get it apart. tanks for the nice comments.
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Re: 1979 T140E into Rickman

Postby Fast Eddie » Wed Mar 29, 2017 1:53 pm

White smoke? Burning oil is normally more like blue smoke.

If it's smoking on shut off (or over run) it's likely to be valve guide related, or possibly bore / ring related. But it could just be the fact that you've got freshly honed barrels etc? It may bed in.

Ref oil pressure, first things first, are you sure your gauge is good? If yes, most likely cause of poor pressure is a damaged or incorrectly installed crank oil seal. Second most likely is a dodgy oil pump. Both are a easy to get at without pulling the whole motor.

Hope it turns out relatively painless!
Last edited by Fast Eddie on Wed Mar 29, 2017 9:23 pm, edited 1 time in total.
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Re: 1979 T140E into Rickman

Postby auldblue » Wed Mar 29, 2017 5:20 pm

Fast Eddie wrote:White smoke? Burning oil is normally more like blue smoke.

If it's smoking on shut off (or over run) it's likely to be valve guide related, or possibly bore / ring related. But it could just be the fact that you've got freshly honed barrels etc? It may bed in.

Ref oil pressure, first things first, are you sure your gauge is good? If yes, most likely cause of poor pressure is a damaged or incorrectly installed crank oil seal. Second most likely is a dodgy oil pump. Both are a easy to get at without pulling the whole motor.

Hope it turns are relatively painless!



Hi,

I agree with Nigel on this occasion , no need for drastic action yet. If your concerned about bores etc , check your compression. When I did my c'do 750 I had the white smoke , valve stem oil seals popped off no big wow .
Sit back , admire the bike have cig , coffee , cuppa or a wee dram guaranteed it will be an easy fix. Good luck

Jg
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Re: 1979 T140E into Rickman

Postby Britfan60 » Thu Mar 30, 2017 9:45 am

I just stumbled upon this thread and read it in its entirety. I am amazed at the beauty and potential you guys find in what I would have probably thrown in the dumpster. I have a nice condition T140D that could use some freshening up. Havent started her in two years. Thanks for the inspiration. Your Matisse is awesome and its progress was a great way to pass some time. Good luck with it. If you ever get a chance to weigh it, I'm curious of its weight and performance. Thanks
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Re: 1979 T140E into Rickman

Postby mudplugger » Thu Mar 30, 2017 10:27 am

cheers for the advice lads. it has new valves, guides and springs etc, mushroom adjusters. The bores were good so were only honed, pistons were new so only had new rings. oil pump was overhauled and all seemed good. I have took the pressure relief Vv out but not sure how that works, has a spring, 2 holes in a recess in the thread but both were blocked, I assume these clear when pressure builds. I will remove side covers and investigate your suggestions.
I also love a wee dram, I have a nice selection for different moods and occasions, I will have a small one before I start.
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Re: 1979 T140E into Rickman

Postby mudplugger » Thu Mar 30, 2017 10:43 am

Britfan60 wrote:I just stumbled upon this thread and read it in its entirety. I am amazed at the beauty and potential you guys find in what I would have probably thrown in the dumpster. I have a nice condition T140D that could use some freshening up. Havent started her in two years. Thanks for the inspiration. Your Matisse is awesome and its progress was a great way to pass some time. Good luck with it. If you ever get a chance to weigh it, I'm curious of its weight and performance. Thanks


I had intended to put a lot more on this thread, photos and work reports, but I have had a very busy and stressful time between the work on the bike over the last 18 months or so. glad it has inspired you, I have really enjoyed the task and learnt a lot, this forum has always given advice and encouragement. get some pics of your bike on here and start the ball rolling, these bikes are very quick and exceptional handling, it feels lighter than my P11, it must be a close call. All the bits are available in the UK, I bought the front brake master cylinder from the states, it is a Nissin, I could do with a shorter lever as the original sticks out past the bar end. I will follow up with all my findings ASAP. cheers for now
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Re: 1979 T140E into Rickman

Postby mudplugger » Sun Apr 30, 2017 11:58 am

sorted oil pressure, stripped pump, pressure relief vv, checked seals etc. put it back together tried a new gauge, original gauge now fine.
I have now had a few rides out, now sorting a few niggles. had quite a bad oil leak. main one now sorted, my fault, I left the neutral switch out. blanked it off now ok. I think the next one is coming from the primary chain adjusting bolt, not sure but process of elimination is in process. need to look through the Manuel in case I have missed an o ring or seal
2 other concerns.
I have had what I would call pre ignition, like years ago when engine was desperate for a decoke and carried on running when you switch off. it happened twice after 8 or 9 miles. I have felt as if it is running hot since my first start up.

when I removed one of the pipes to fit a clamp I noticed a small pool of oil in the exhaust port. could this burn off in this fashion,

I also thought I would strobe the timing, it appears to be a long way out with the strobe light, marks about 25-30mm before pointer. I doubt that the revs were up to suggested 3500rpmas stated in book. I checked static again today and it was all but spot on as per boyer instructions. could this also contribute to pre ignition.

I have read things suggesting different timing. any suggestions or advice welcome.

the bike rides really well, just need to sort this to gain the trust. cheers Neil
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Re: 1979 T140E into Rickman

Postby L.A.B. » Sun Apr 30, 2017 2:38 pm

mudplugger wrote: I also thought I would strobe the timing, it appears to be a long way out with the strobe light, marks about 25-30mm before pointer. I doubt that the revs were up to suggested 3500rpmas stated in book.



The 'book' information (for standard T140E Lucas Rita ignition with 5PU pickup) doesn't apply, as the Boyer won't reach full advance until somewhere approaching 5000 RPM (see Boyer instructions, below).



mudplugger wrote: I checked static again today and it was all but spot on as per boyer instructions. could this also contribute to pre ignition.


You cannot set the Boyer accurately by static timing, or at least, you can't rely on the static setting being absolutely accurate. The final check (and probably final adjustment) needs to be done with the strobe as the static setting is only intended to get the timing near enough so the engine can be started and no matter how accurately you try to static time the Boyer it could still be several degrees out.

http://www.boyerbransden.com/pdf/KIT00052.pdf

23) Start engine and run for 4 to 5 minutes to warm up. Connect the strobe lamp and time with the engine running up to 5000
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Re: 1979 T140E into Rickman

Postby grandpaul » Mon May 01, 2017 7:04 am

Time for a "before & after" photo!

Did you check the head's valve guide bore diameters against spec, to be sure that's not where the oil in migrating into the combustion chamber(s)?

That's a common wear point on the 500s.

Sure is a smart looking mount.
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Re: 1979 T140E into Rickman

Postby mudplugger » Tue May 02, 2017 12:18 am

thanks, will get onto it asap. photos will be on soon.
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Re: 1979 T140E into Rickman

Postby mudplugger » Tue Jun 27, 2017 12:40 pm

finally sorted most of the niggly problems, really enjoying the rides. handles fantastic, goes really well. still some improvements to make but just going to put some miles on it and enjoy for a few months. hopefully a before and after photo should be attached. thanks for all the help and advice. its a comfort to know all the answers are here somewhere. [Image
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Re: 1979 T140E into Rickman

Postby mudplugger » Tue Jun 27, 2017 1:08 pm

weight is about 150kg, weighed at MOT by front wheel weight and rear wheel weight added together. I think standard T140 is about 46 hp. this is standard but with polished ports. it is a small bike and according to the scales is about 65kg lighter than my commando, I stand corrected if you have better weights available.Image[/url%20copy_zpsqzwkkdkb.jpg[/img]0copy_zpsjbtheomy.jpg[/IMG][/URL]Image
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Re: 1979 T140E into Rickman

Postby Fast Eddie » Tue Jun 27, 2017 2:52 pm

Looks great.
Enjoy!
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Re: 1979 T140E into Rickman

Postby auldblue » Tue Jun 27, 2017 4:02 pm

You've done a great job and turned out a real smasher. You must be thrilled to bits when you take her for a spin, always a great feeling when you look at it and think "I did that" . Top work , now you can give it a public flogging.
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