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Messages - Blasta
1
« on: October 19, 2018, 11:00:54 PM »
UPDATE.
I've got busy with some other projects, but have managed to put about 3000km on the bike since posting last. The oil seal seems to be holding and no oil has leaked. Seems to have been a permanent fix.
2
« on: November 20, 2017, 08:30:10 AM »
The weather here is perfect for riding at the moment and I can't keep off the bike  .....so I've put about 700km on it now and it's still ok. Will report back as I get more kms on it.
3
« on: November 18, 2017, 11:17:55 PM »
Well, I got the bike back together and took it for a ride yesterday. I did about 250 km on it and the seal is holding and there's no oil leak. Hopefully it continues that way
4
« on: November 12, 2017, 10:16:05 PM »
Great, thanks.
5
« on: November 12, 2017, 01:15:51 AM »
HI Guys, I'm just putting my oil tank back in my bike and I'm a bit unsure where the breather lines go. My manual doesn't show the lines for a K4, but I'm sure when I took it off the lower fitting on the back of the tank was connected to a line that vents to atmosphere (hose goes down to bottom of bike). The upper fitting on the back of the tank had no hose fitted to it, but I'm guessing that it goes to the rocker cover breather (which also had no hose fitted to it). Have I got that correct or is it the other way around? I've attached a pic of the tank in my bike just to make sure where talking about the same one. Thanks for your help
6
« on: October 28, 2017, 06:58:38 AM »
Yes, I'd spoken to a few people and was going to do the upside down thing if required.......but I don't think it is. I had another go at the seal and it actually came out fairly easily and I managed not to damage anything. The new seal was a nice snug fit and I put a little sealant around the edge. [ Guests cannot view attachments ] Looks pretty good to me and I'm pretty confident it's not going to leak (famous last words ). I've got a few other things to do to it before it's back on the road, but I let you know if it's worked when I get a few kms on it.
7
« on: October 26, 2017, 11:29:13 PM »
Thanks for all the advice, and thanks Rob62 for that link. All very interesting.
I've had the bike for about 6 months and the guy I bought it from had rebuilt the motor. He's in his 60s and has been riding/racing/rebuilding 754s since they came out in the 70s.
He did the motor many years before I bought it off him and sorted all the rest of the bike, I've done 1600km since.
I spoke to him after I posted this thread and he's offered to help me take the motor out and replace the seal. He also thought that the alternative option would probably work, and after reading the thread that Rob62 posted I think I agree. I think it's worth trying, if it leaks I'm really no worse off and I'll take him up on his offer.
So now I just have to get the old seal out, and as you can see from the pic I had a go yesterday and was unsuccessful. I'll have another go and let you guys know how it turns out.
8
« on: October 26, 2017, 12:55:59 PM »
Yeah I think I will, maybe with a tiny smear of sealant around the outside edge.
Now I just have to get the old one out. Any ideas?
9
« on: October 26, 2017, 09:46:03 AM »
OK, I see now. They must have sent me the wrong seal eventhough it has the correct part number on the bag.
10
« on: October 26, 2017, 08:31:43 AM »
I will replace all the seals while I'm at it, but I'm still a bit confused.
I bought a seal kit in advance. Here's 2 pics of it, one from each side;
[ Guests cannot view attachments ] [ Guests cannot view attachments ]
And here's the seal in the bike.
[ Guests cannot view attachments ]
The seal appears to have no lips or ridges or anything on the outside surface. The seal in the bike is flush with the casings and they don't seem to be have any lip or anything holding the seal in. I looked in the manual I have and I can't see what's holding the seal in.
After checking all that I thought the seal would come straight out and had a go, didn't matter if I damaged it it was already leaking and coming out one way or another. You can see some damage to it in the pic.
So, I still don't understand why it won't just come straight out. Can someone explain what holds the seal in?
11
« on: October 26, 2017, 05:30:05 AM »
The leak is bad enough that I want to fix it, and I think it is leaking from the seal to the crank.
12
« on: October 26, 2017, 01:59:05 AM »
Hi Guys,
My K4 has developed a leak from the crankcase seal behind the ignition. Can I replace that seal without splitting the cases?
Thanks
13
« on: August 28, 2017, 10:38:56 PM »
I think I'll remove it too. Thanks for your comments.
14
« on: August 28, 2017, 07:59:59 AM »
I think you might be right. Thanks for your help
15
« on: August 28, 2017, 07:51:15 AM »
It does have wires connected to it that go into the back of the headlight.
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