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Og
Joined: 18 Jul 2012
Posts: 30
Location: UK
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 Posted: Wed Sep 19, 2012 7:06 pm Post subject: Thermostat, who needs it? |
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I have a question some of you will love! In the days before the forum when I was a lowly one SB6 owner, the thermostat housing on my 94 SB6 basically disintegrated into white powder. No amount of welding could fix it! What to do back then, simple remove thermostat, pipe straight through and only drive bike on warm days after it has heated up! Been like that for 10 years now. Question, does this seem reasonable? Better question, is the thermostat bespoke Bimota or does it come from the suzuki and where can I get a replacement or should I stick to warm weather rides? Og 
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oily
Joined: 05 Apr 2008
Posts: 4788
Location: worcestershire
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| Posted: Wed Sep 19, 2012 7:29 pm Post subject: |
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I've been looking for a thermostat for a SB6 for quite some time. Definitely not Suzuki and definitely very rare 
I've been running the big bore without a thermostat for a while now with no adverse affects. Just warm it up first and cane it to keep it nice and warm
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Og
Joined: 18 Jul 2012
Posts: 30
Location: UK
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| Posted: Wed Sep 19, 2012 8:00 pm Post subject: |
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Thanks Oily. The days before the forum where dark days indeed. I will carry on with my sunny day approach to riding and keep an eye out for the elusive thermostat housing. I suppose it makes the bike lighter! Og 
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crankcase
Joined: 09 Nov 2011
Posts: 387
Location: Frankfurt Germany
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Desmo_Demon
Joined: 19 Sep 2011
Posts: 240
Location: Easley, SC, USA
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| Posted: Thu Sep 20, 2012 7:53 am Post subject: |
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How difficult would it be to use some other thermostat, modify it if necessary, and custom fabricate a housing for it to fit in the same location as the original or very close to it? I'm not familiar with the thermostat on the SB6, so I was wondering. Have a pic, Oily?
Edit - From the picture from crankcase's link, it looks like they make similar ones for marine applications - http://www.ebay.com/itm/Marine-Inline-Thermostat-Housing-Fresh-Water-Cooling-Bypass-/370584615898
Same as this one - http://bpi.ebasicpower.com/p/SEASK3002/Inline+Thermostat+Housing+Fresh+Water+Cooling
That one looks to be 1-1/2" (38.1 mm) water connections and 5/8" (15.8 mm) bypass and probably from a Seadoo watercraft by the part number.
From other research, it looks like some tractors use similar designs.
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Last edited by Desmo_Demon on Thu Sep 20, 2012 8:17 am; edited 2 times in total |
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oily
Joined: 05 Apr 2008
Posts: 4788
Location: worcestershire
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| Posted: Thu Sep 20, 2012 8:07 am Post subject: |
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I did find that one when I was restoring my Mk11 but couldn't justify that cost 
Daz from metalsliders gave me his for a fiver 
People don't realise what these things are worth and when they have a cooling problem, first thing they do is ram a screwdriver through it to eliminate it.
Had two like that now but also rescued two "duf" ones that were supposedly stuck.
DD..I've looked at making the housings which would not be an issue but have yet to find a thermostat which is small enough. Probably from an Italian moped or something as it's a quarter of the size of a GSXR.
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Sb6 mk2 ( Big Bore)
Sb6 mk2 ( Restored)
Sb6R fighter
Sb6 or Sb7 WANTED |
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Desmo_Demon
Joined: 19 Sep 2011
Posts: 240
Location: Easley, SC, USA
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| Posted: Thu Sep 20, 2012 8:25 am Post subject: |
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| oily wrote: |
| but have yet to find a thermostat which is small enough. Probably from an Italian moped or something as it's a quarter of the size of a GSXR. |
I imagine there isn't much room in there.
I edited my post above a few times before realizing you'd replied. You see the one I listed above that is similar to the Bimota's? What is the size of the inlet and outlet pipes of the SB6's?
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oily
Joined: 05 Apr 2008
Posts: 4788
Location: worcestershire
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| Posted: Thu Sep 20, 2012 8:43 am Post subject: |
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inlet/outlet is 30mm....
Your right, there is very little room, the Thermostat is usually wedged twixt engine and frame unless you butcher the frame ( ). The whole thermostat arrangement could be moved around the cooling system perhaps to the left side of the engine but where it is, on top of the engine is obviously the optimum place.
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Sb6 mk2 ( Big Bore)
Sb6 mk2 ( Restored)
Sb6R fighter
Sb6 or Sb7 WANTED |
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Desmo_Demon
Joined: 19 Sep 2011
Posts: 240
Location: Easley, SC, USA
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| Posted: Thu Sep 20, 2012 8:58 am Post subject: |
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| oily wrote: |
| inlet/outlet is 30mm..... |
This go-kart thermostat looks smaller than the one listed above, but they don't have the dimensions, unfortunately. Looks like the plug is where you can put a fitting for the bypass...
http://www.fastech-racing.com/righetti-ridolfi-inline-thermostat.html
I'm at work at the tail end of an 18-hour shift. I have some time to kill to surf the Internet.
Edit - You'd think they'd give the effin' measurements of the inlet and outlets....
http://www.sqracing.com.au/radiators-and-parts/inline-thermostat-kartelli-corse
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Evilchicken0
Joined: 12 May 2010
Posts: 2996
Location: London
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| Posted: Thu Sep 20, 2012 2:32 pm Post subject: |
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Are we over thinking this though ?
The thermostat housing sits behind the block on this FZR400. If we were to use two bottoms bolted together it should work and it would be inline. I can't remember where the recess for the thermostat is, it has an integral gasket and different themperature openings are available.
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oily
Joined: 05 Apr 2008
Posts: 4788
Location: worcestershire
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| Posted: Thu Sep 20, 2012 2:43 pm Post subject: |
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That's where I was going (eventually, when time allowed) two billet caps bolted together BUT there is still limited space so a compact solution is required.
I like the idea of being able to change the stat (unlike original) for different temperatures
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SB6 mk1 (project mega light, big bore)
Sb6 mk2 ( Big Bore)
Sb6 mk2 ( Restored)
Sb6R fighter
Sb6 or Sb7 WANTED |
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morepower
Joined: 10 May 2012
Posts: 85
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oily
Joined: 05 Apr 2008
Posts: 4788
Location: worcestershire
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| Posted: Fri Dec 14, 2012 12:44 pm Post subject: |
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... Donated by a very benevolent forum member....
...destined for the first big bore when I get time.....this means I now have a working thermostat for each Bimota in the garage........for now
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Sb6 mk2 ( Big Bore)
Sb6 mk2 ( Restored)
Sb6R fighter
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Evilchicken0
Joined: 12 May 2010
Posts: 2996
Location: London
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| Posted: Fri Dec 14, 2012 12:59 pm Post subject: |
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But does that mean you'll be cutting an old thermostat up ?
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oily
Joined: 05 Apr 2008
Posts: 4788
Location: worcestershire
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| Posted: Fri Dec 14, 2012 1:09 pm Post subject: |
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...pay attention .....
I cut up the original fooked thermostat which came with the "big bore". Did it last year.....
...anything in particular you need?...dimensions?
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SB6 mk1 (project mega light, big bore)
Sb6 mk2 ( Big Bore)
Sb6 mk2 ( Restored)
Sb6R fighter
Sb6 or Sb7 WANTED |
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