New (to me) 400c

[Busby]

This is the master cylinder stripped, nasty

[Busby]

Bit of a scrub and it’s not too bad

[pidjones]

Get a kit. You will save yourself a lot of trouble. The only way I know to get a new disk, and it needs to be clean and perfectly flat.

[Busby]

New seal fitted

[Busby]

New spring and plunger all back together

Splash of paint and it’s all done
[url=https://flic.kr/p/2mMSdkp]

[Busby]

Lots of good things back from the spray shop



Graphics have been ordered and should be here soon😀

[Busby]

Hi 5port, my paint guy had it made up by a specialist, it is under artificial light so doesn’t show it at it best. When I have put the graphics on I will do some natural light pics to hopefully show the brilliant colour.

[Busby]

As promised a natural light picture

[Busby]

And jusr because

[url=https://flic.kr/p/2mPMzzB]

[pidjones]

Pretty!

[Busby]

Yes the blue was a great colour as well, I think this year was the best for colours for the rd’s

[Busby]

Well it’s about time I got back to the bike.

I thought I would take a squint at the motor, it has great compression so I am hoping it will just need the seals changing.

First I drained the oil
7F2A2E0B-DC00-4A69-9C58-72CA3AADC3

Umm that does not look good.

[Busby]

I mean, how bad can it be!

Apparently very bad

24B3A474-097C-4F

[url=https://flic.kr/p/2n9acRQ]DFA40B11-5B3A-4CCB-946D-D3B527A94C8F[/u

[url=https://flic.kr/p/2n9fCFW]5C50283B-415D-4087-A26E-760F772A68C0 by

It looks like the right hand crank seal has failed allowing gear box oil into the crank.

[Busby]

As I said at the start it had great compression, yes it did but only on the left hand cylinder😕

The motor has had a rebore, the left hand cylinder still has the honing visible, there is no carbon build up on the pistons or head so it obviously failed soon after it was done.

FD5AE67C-B394-4F22-86C2

The right hand bore is completely ruined, you can see a score on the liner

[Busby]

Another view of the crank showing the corrosion on the webs

537520FB-6E05-49E8