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Messages - cbradley400/4
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1
« on: August 23, 2024, 12:56:07 PM »
Thank you...
I think I'll just have to live with this-the bike has always done it.
My mate did fit new O rings and sealed them but it hasn't worked clearly. This was done a few years ago. It's very irritating as I've owned over 100 Jap bikes and they rarely leak oil in my experience. I did use to own a Kawasaki W650 which looks more like a Triumph and that bike actually did leak oil just like the real thing!!
2
« on: August 22, 2024, 09:44:21 PM »
I've just read Laverda Dave's rebuild thread and you have my total sympathy regarding the engine trouble.
In fact my 400/4 which was the reason I originally joined this forum suffered from engine trouble and had to be re-bored. 4 times the number of components in many instances and very expensive IIRC. Luckily I have a good friend who's a very competent bike and car mechanic and he did the work for me without any issues. I seem to recall the re-bore was done by Grampian Motors.
Those engine problems you encountered sound like an absolute nightmare and you did very well to persevere and complete the bike after all those problems.
I've had running problems with my 750 Ducati Monster ever since I bought it 4 years ago and I know how expensive and frustrating these problem bikes can be.
3
« on: August 22, 2024, 05:21:38 PM »
Thanks for replies.....
Yes they are very underrated and great very light weight and unintimidating bikes-perfect for an every day hack or despatching back in the day-well as long as the distances are not too great.
I always think they could do with a bit more urge and have always admired the 500 conversions but that would be way above my skill set-Allen Millyard I most definitely am not!
As to the tank dimensions I've done my best but can't guarantee the accuracy : A = about 45mm, B = about 35mm, C = about 25mm, D = about 20mm. The others I can't do at the moment as the seat is a bit of a pain to remove as you will know but if they are still needed let me know and when I have time I'll remove the seat and try again.
Mine has always suffered with most Un Honda like oil leaks presumably from the head and I'm going to search on this forum but I don't suppose there are any easy answers to this problem?
Another problem I had with mine in the past was corrosion of the frame which only became apparent when the kick start lever began to foul the right footrest hanger. My mate had to investigate and weld up the frame behing IIRC where it bolts to the frame.
4
« on: August 20, 2024, 08:00:51 PM »
I used to be a member of this forum back in 2008 when I owned a 400/4.
For many years I've been a fan of the CB250 RS and have owned quite s few of these .
My current one is a 1981 A model which I've owned for the last 10 years.
I bought it as an abandoned cafe racer conversion and returned it to standard.
I cover about 1000 miles a year on it as i have other bikes too.
It's been pretty reliable.
I'm just wondering how much interest there is on this forum for these models?
5
« on: October 09, 2009, 07:30:45 PM »
Many thanks.
6
« on: October 08, 2009, 10:03:56 PM »
I'm not sure.I got a spare master cylinder but haven't fitted it yet as the leak is intermittent and it stopped again!
The bike's been off the road recently as it's burning oil at 5000+ rpm and just won't run right.The points and ignition have been checked as have the carbs.It needs a compression test and the head lifting as i'm told it's likely to be rings.There's 40K + miles on the clock.Any further views would be greatly appreciated.
Martin
7
« on: October 08, 2009, 09:57:24 PM »
Sounds like they are the same as the RD 400 then.Thanks.I'll get the wheel out and give it a go now then.
Martin
8
« on: October 05, 2009, 06:51:41 PM »
Many thanks,belatedly.
9
« on: October 05, 2009, 06:48:48 PM »
Can anyone advise how straightforward a job this is please.My bike is coming up for MOT and i want to sort this out before i get a fail slip?
10
« on: December 27, 2008, 10:12:43 PM »
Thanks,i'll check that out.
11
« on: December 26, 2008, 05:32:21 PM »
Can anyone advise with this little problem ?
I appear to have hydraulic fluid leaking in small spots on to the petrol tank of my 400/4.
The cap has not been off for some time?
Many thanks.
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