gt380 crankcase seal....

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Ramjam
To the on ramp
Posts: 254
Joined: Tue Apr 30, 2013 9:28 am
Country: Lebanon
Suzuki 2-Strokes: gsx 750R, GPZ 750, GT380
Location: Lebanon

gt380 crankcase seal....

Post by Ramjam »

HI
could anyone please tell me if there is a simple way of doing this without taking the clutch assembly and alternator apart/off? In other words, is there a relatively simple way of taking the engine unit out and replacing the seal on, what i assume is number 3 piston end of the crank? i.e. can the seal on the crankcase end be replaced with the crankshaft still in its rightful place?

If not, then i would guess that the entire clutch assembly, kickstarter, ignition disc on one side - and the alternator, clutch and gear assembly on the other has to be removed entirely before 'splitting' the cases....yeah?

If anyone has a step-by-step guide, i would be grateful. My maintenance skills are not bad (have rebuilt engines in the past) but i am also the king of unfinished projects and i dont want to start it, then leave it cos there was something complicated which i hadn't figured on encountering. I have the original suzuki gt380 manual but it's a big vague in places.
any advice appreciated

M in Beirut
Craig380
Expert racer
Posts: 1254
Joined: Mon Dec 01, 2008 2:52 am
Location: Manchester, UK

Re: gt380 crankcase seal....

Post by Craig380 »

Hi there, is the engine burning the gearbox oil? Or does the gearbox oil smell of gasoline? If not, the seal might be OK ...

I have never tried it, but I do not think it's possible to change the seal without splitting the crankcases ...
1976 GT380 - wounded by me, and sold on
2006 SV650S - killed by a patch of diesel and a kerb in Feb 2019
2017 SV650 AL7 - naked and unashamed
Ramjam
To the on ramp
Posts: 254
Joined: Tue Apr 30, 2013 9:28 am
Country: Lebanon
Suzuki 2-Strokes: gsx 750R, GPZ 750, GT380
Location: Lebanon

Re: gt380 crankcase seal....

Post by Ramjam »

no, the gearbox oil is being sucked into the chamber and being burnt. that's for sure.
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