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PostPosted: Sun Nov 25, 2018 10:35 am 
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Joined: Sat Sep 05, 2015 3:14 pm
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Location: southeast pa
Country: us
Bikes owned: GT
I used Blue Devil pour n go oil stop leak on my T250 with success, first i would fill the crankcase to the top to check for leaks,if it holds the level good,I would drain some off but keeping seals submerged,spinning crank occasionally it is much easier to drain with the engine out of the frame,you just dump out,not sure if T350 has drain plugs under crankcase.

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PostPosted: Sun Nov 25, 2018 10:43 am 
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Location: southeast pa
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Alan H wrote:
The crank seal between the transmission end of the crank and the points cam takeoff can be changed without stripping the engine completely.

Can this seal be replaced,I thought on a 550 it was behind the main bearing that is held in by the c-ring.
Sorry to take over your thread.

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76 GT185
77 GT250
77 GT380
76 GT500
73 GT550
73 GT750
74 GT750
71 T250 scrambler
75 T500 cafe


Last edited by karl pa on Sun Nov 25, 2018 10:49 am, edited 1 time in total.

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PostPosted: Sun Nov 25, 2018 10:43 am 
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World Superbike
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Joined: Thu Feb 16, 2012 11:50 am
Posts: 2172
Location: The Republic of South Yorkshire
Country: England
Bikes owned: GT550s GT750 GSX1400 and lots of spares
GT500-2stroke wrote:
Also, How do I remove diesel fuel after soaking?
Till what level should I fill in diesel fuel in crankcases?

Thanks.

1. Tip the engine upside down.
2. It needs to be higher than the highest bearing.

Cover the big ends as well as the crank bearings and seals. Turn the engine over slowly for a few minutes, several times.
It does work - I've done 3 engines like this now.
Oil all bearings after you've drained the diesel. It'll smoke really badly and you may need a squirt or 2 of easy start initially, but you'll see the house eventually and the bike should be ok then.

See here - http://www.kettleclinic.co.uk/kcforum/v ... 490#p57490 towards the bottom of page 1 for a full description of how to do it.


Last edited by Alan H on Sun Nov 25, 2018 11:05 am, edited 1 time in total.

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PostPosted: Sun Nov 25, 2018 10:45 am 
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World Superbike
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Joined: Thu Feb 16, 2012 11:50 am
Posts: 2172
Location: The Republic of South Yorkshire
Country: England
Bikes owned: GT550s GT750 GSX1400 and lots of spares
karl pa wrote:
Alan H wrote:
The crank seal between the transmission end of the crank and the points cam takeoff can be changed without stripping the engine completely.

Can this seal be replaced,I thought it was behind the main bearing that is held in by the c-ring.
Sorry to take over your thread.

That's the one in the clutch case that has the C ring (2 bearings and 2 seals as well.)

See my last couple of posts here - http://www.kettleclinic.co.uk/kcforum/v ... wig#p87891


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PostPosted: Sun Nov 25, 2018 11:09 am 
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On the main road

Joined: Sat Sep 05, 2015 3:14 pm
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Location: southeast pa
Country: us
Bikes owned: GT
I think on a 550 the only seal that will pull transmission oil into the engine is the one behind the main bearing with the c-ring
Blue devil seal repair is a conditioner,to help soften the rubber

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77 GT250
77 GT380
76 GT500
73 GT550
73 GT750
74 GT750
71 T250 scrambler
75 T500 cafe


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PostPosted: Sun Nov 25, 2018 12:47 pm 
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World Superbike
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Joined: Thu Feb 16, 2012 11:50 am
Posts: 2172
Location: The Republic of South Yorkshire
Country: England
Bikes owned: GT550s GT750 GSX1400 and lots of spares
Ahhh, bugger. I thought that seal was outboard, like at the other end behind the alternator. Drat and double drat, Muttley!
With the smoke out of tbe RH pot, that seal is definitely toast.
Looks like a complete strip when I've done the other 550 resto.


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