Rear base gasket leak

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Motogoon
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Rear base gasket leak

Postby Motogoon » Wed Jul 26, 2017 5:13 am

At this stage it's fairly minor so will just keep an eye on it for now.
Last edited by Motogoon on Thu Oct 05, 2017 7:30 am, edited 2 times in total.

Silverbear
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Re: Rear base gasket leak

Postby Silverbear » Wed Jul 26, 2017 1:41 pm

Make sure that the crankcase breather tube from the alternator and into the air box is not restricted in anyone(blocked up or the one way valve is around the wrong way or is kinked,squashed).Early SD's may not have a one way valve.Reason being if the crankcase is unable to breath correctly,crankcase pressure will build up and oil will seep out gaskets.If oil is blowing out the breather(check your air cleaner for excessive oil build up)which can restrict breathing,then replace the balancer shaft seal which is inside the alternator cover.I replace mine every 15000kms as preventative maintainance.Cheers

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Motogoon
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Re: Rear base gasket leak

Postby Motogoon » Wed Jul 26, 2017 7:21 pm

It has a Motohooligan air box, will have a look to see what the breather set up is

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Motogoon
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Re: Rear base gasket leak

Postby Motogoon » Sun Sep 24, 2017 3:58 pm

Cheers
Last edited by Motogoon on Thu Oct 05, 2017 7:27 am, edited 1 time in total.

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Aphex
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Re: Rear base gasket leak

Postby Aphex » Sun Sep 24, 2017 11:53 pm

Sorry I can't help but mine is seeping now too.
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Me so Hoony.

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Motogoon
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Re: Rear base gasket leak

Postby Motogoon » Mon Sep 25, 2017 12:30 am

Aphex wrote:Sorry I can't help but mine is seeping now too.


Gutted for ya.

The other bummer is the weathers just turned good and it's my only bike so I have to order all the parts in advance (KTM New Zealand basically carries nothing in stock) so that I can do it in one hit because every time I order something it can be a 3 week wait!
Last edited by Motogoon on Thu Oct 05, 2017 7:28 am, edited 1 time in total.

Silverbear
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Re: Rear base gasket leak

Postby Silverbear » Mon Sep 25, 2017 2:23 am

The other bummer is the weathers just turned good and it's my only bike so I have to order all the parts in advance (KTM New Zealand basically carries nothing in stock) so that I can do it in one hit because every time I order something it can be a 3 week wait!


A 3 week wait!Luxury.I ordered a heap of parts for a full rebuild of my 990sm 6 weeks ago and still waiting on a few parts.

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Motogoon
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Re: Rear base gasket leak

Postby Motogoon » Mon Sep 25, 2017 8:50 am

Man 6 weeks, that sucks!

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Motogoon
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Re: Rear base gasket leak

Postby Motogoon » Tue Feb 13, 2018 4:02 am

Image

Front cylinder off, looks all good in there.

Usually I use no sealant on gasket surfaces, I know Klink used some on the base gaskets on his timing chain walkthrough. What's the consensus, sealant or no? (I'd probably use 3 bond if I was going to but I'm probably tending towards none)

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nampus
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Re: Rear base gasket leak

Postby nampus » Tue Feb 13, 2018 8:55 am

There's no mention in the manual of using extra sealant on the gasket, so I would go with no sealant.

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No. 47
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Re: Rear base gasket leak

Postby No. 47 » Tue Feb 13, 2018 9:56 am

As per my post in CK's thread viewtopic.php?f=18&t=21245&p=257997&hilit=base+gasket#p257997, advice given and followed is to use sealant given quality of mating surfaces and corrosion pitting - lot's of similar advice on advrider.com re LC8 eg http://advrider.com/index.php?threads/w ... t-31981607
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Motogoon
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Re: Rear base gasket leak

Postby Motogoon » Tue Feb 13, 2018 6:06 pm

No. 47 wrote:As per my post in CK's thread viewtopic.php?f=18&t=21245&p=257997&hilit=base+gasket#p257997, advice given and followed is to use sealant given quality of mating surfaces and corrosion pitting - lot's of similar advice on advrider.com re LC8 eg http://advrider.com/index.php?threads/w ... t-31981607


Thanks, yeah I have looked at some of the pics on adv rider and was shocked at the pitting on some of those cases. My front one is smooth and I'm hoping like f##k the rear one is too but that was leaking more than the front so not holding my breath. I'll find out tomorrow when I lift the rear.

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Motogoon
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Re: Rear base gasket leak

Postby Motogoon » Tue Feb 13, 2018 9:00 pm

nampus wrote:There's no mention in the manual of using extra sealant on the gasket, so I would go with no sealant.


Yeah I'll go no sealant on the front as the surfaces are in excellent condition. As per no. 47's suggestion I'll make a decision on the rear depending on the state of the case's gasket surface.


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