SV superbike leaking/using coolant

Morgan Jones morgan at
Sun Sep 21 09:48:37 PDT 2008

Hrmph..  That was my read.. but what would cause that?  Is the solution 
just to replace the base gasket?


zoran wrote:
> it is leaking through base gasket.
> Zoran Vujasinovic
> Twin Works Factory
> 775-786-4881
> ----- Original Message ----- From: "Morgan Jones" 
> <morgan at>
> To: <sv-dl-riders at>; "Suzuki SV650 Mailing List" 
> <sv650 at>
> Sent: Sunday, September 21, 2008 8:18 AM
> Subject: SV superbike leaking/using coolant
>> Hello everyone,
>> My '99 SV track bike has developed what I think is a coolant leak.. 
>> It was down probably a cup of coolant after my last track day.   I 
>> filled it and took it to the track again yesterday.  After a full day 
>> of riding it is down about 6 inches.  It still cools fine but of 
>> course that's sort of a lot of coolant for a track day..
>> Well in the middle of the day I pulled off the bodywork and this is 
>> what I found:
>> It's definitely coolant--it's just a touch damp and smells like water 
>> wetter.  There is evidence that there was fluid in the belly pan but 
>> very little (like 1/2 cup).  The pan is totally dry.
>> I cleaned it up and ran the bike until the fan kicked on and couldn't 
>> see evidence of leaking.  I took the bike back on the track and it 
>> used more coolant.
>> A little background: I bought the bike with a popped freeze plug 
>> which lead to a blown head gasket.  That was 2 years and 12-20 track 
>> days ago.
>> This is a worked bike:  680cc, carillo rods, valve work, race cams, 
>> flat slides.  The work was all done many owners ago and as far as I 
>> can tell it was done well..  it has run like a Swiss watch in the 3 
>> years and probably 25 track days I've owned it.  It's 90hp at the 
>> wheel depending on whose dyno you ask.  It is clearly faster than 
>> other SVs on the track.
>> Any ideas?  I want desperately for someone to tell me that's dripping 
>> from somewhere and I just need to look harder..  That's not what it 
>> looks like to me.  Could this be a leak from the water jacket at the 
>> base gasket? Does that ever happen?
>> thanks.
>> -morgan 

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