Cracked waterjacket

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Liam2k3
Posts: 32
Joined: Mon Oct 23, 2017 3:30 pm
Location: Lancashire

Cracked waterjacket

Postby Liam2k3 » Mon Nov 13, 2017 10:55 pm

WSPC ENGINE. big smiley face style crack in the side of the cylinder. the Waterjacket was chock full of rust but the bore looks ok. Drilled out the worst of the rust and gave it a scrape out. But my question is, should i bother putting a new head gasket on and run it as is with the crack or replace the cylinder?

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Collector Inspector
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Re: Cracked waterjacket

Postby Collector Inspector » Tue Nov 14, 2017 4:45 am

[color=#0040BF]Hi Liam

If that far gone then it is scrap. A common problem this model. There is a hidden part of the water jacket that silts up over time. Rusts from within.

You will find another block without too much of a problem.

BnC
[/color]
Seasonal culinary tip: all mushrooms are edible, but some only once.

Liam2k3
Posts: 32
Joined: Mon Oct 23, 2017 3:30 pm
Location: Lancashire

Re: Cracked waterjacket

Postby Liam2k3 » Tue Nov 14, 2017 4:54 pm

Will a 102 AC cylinder fit on my wspc. Apart from the obvious fuel tank bracket difference?

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seagull101
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Location: Scottish islands

Re: Cracked waterjacket

Postby seagull101 » Tue Nov 14, 2017 5:34 pm

Sadly this it too common on these silver seagull blocks.
I had the same problem on a EFNR and have done what you wan to do and converted it to a 102FNR 102 block, tank, tank mounts, external water pipe, exhaust.
Its a Bitsa but looks good but i cant get it to run, need to clean the carb.

Jacob

Liam2k3
Posts: 32
Joined: Mon Oct 23, 2017 3:30 pm
Location: Lancashire

Re: Cracked waterjacket

Postby Liam2k3 » Tue Nov 14, 2017 9:26 pm

Its already got the wrong carb niked from a minimoto, fuel tap from a honda cg125 And a throttle from a lawn mower. So a 102 cylinder will match quite nicely with this bitsa.

headdownarseup
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Re: Cracked waterjacket

Postby headdownarseup » Wed Nov 15, 2017 11:59 pm

Yes, a 102 block will fit your wspc crankcases.
The only thing to be wary of is the shape of the transfer port. The shape and physical size of the transfer port varies quite a bit between older and newer blocks so try and get a block that best matches your crankcases. Should be easy enough to see what i'm talking about.

And then of course make sure the 102 waterjacket isn't as bad as your wspc block was in the first place or you'll be doing this job all over again.


Jon


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