Author Topic: thermostat for water cooled super 9  (Read 4577 times)

zombie

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Re: thermostat for water cooled super 9
« Reply #15 on: April 22, 2012, 03:47:16 AM »
Brutha from another mutha.
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wordslinger

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Re: thermostat for water cooled super 9
« Reply #16 on: April 22, 2012, 03:54:17 AM »
....nina, the 50cc can run 50 miles and be just warm enough that you can keep your hand on the jug afterward...


..not so with bertha....take th skin off!!!
..every mod (action) necessitates a (reaction) mod..

zombie

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Re: thermostat for water cooled super 9
« Reply #17 on: April 22, 2012, 05:36:35 PM »
May just be the nature of the beast. I'd look into a bigger/Aux. Rad. or fans...
Either one could add many miles.
Have you seen the "wetter water" products?. Lots of race engines use it along with distilled water instead of proper "anti freeze".
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Areomyst

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Re: thermostat for water cooled super 9
« Reply #18 on: April 22, 2012, 09:02:17 PM »
The water pump on that engine was actually replaced, not rebuilt.  It came off of a new Super 9 engine that was the result of some recall back in the day.  Something to do with the structural integrity of the CVT side crankcase... the recall was before I was really privy to Kymco.  That said, the water pump should hopefully be okay, but hotter running can certainly have an affect on things.

The high compression ratio is a factor, yes, but in my opinion (I have not verified with tests) the Prima cylinder's waterjacket is a more contributing factor to the heat than the cylinder head.  I went out to the shop just now, and snapped a few quick photos in effort to illustrate the point:

Above, is a stock liquid cooled cylinder.  Note the water jacket.


A Prima (or Char-Mo) cylinder, seems to be very close to what I would expect to see from a stock cylinder that has been re-bored.  I didn't have an extra Prima laying around, but I marked the cylinder with a scribe line to show the approximate re-bore.  The water jacket is the same, therefore you've got more surface area in the bore, a bigger piston, more air, (likely) higher temps, and with the same amount of water moving around the parts to cool 'em down.


This photo shows the Stock Super 9 cylinder next to a Malossi cast-iron, and an Airsal.  Notice how both have significantly larger waterjackets.

The engine in bertha was originally built an a stretched budget - thus the Prima cylinder in the first place.  For what it is, I felt it was doing alright, but I don't like to know that it's running that hot!  I've got to get on the ball and send you that other cylinder head. Despite the fact that the water jacket on the cylinders are different, the cylinder heads themselves have quite a few differences. 

Cheers!

~Josh
www.scooterinvasion.net - Tech help, repairs & tuning.

zombie

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Re: thermostat for water cooled super 9
« Reply #19 on: April 23, 2012, 12:17:32 AM »
How do you feel about adding fans/additional Rad. ?
"They have nothing in their whole imperial arsenal that can break the spirit of one Irishman who doesn't want to be broken."   Bobby Sands...

wordslinger

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Re: thermostat for water cooled super 9
« Reply #20 on: April 23, 2012, 12:49:30 PM »
The water pump on that engine was actually replaced, not rebuilt.  It came off of a new Super 9 engine that was the result of some recall back in the day

...nina has a "new" engine, as a result of that recall...

..the larger bore/with same water flow makes sense, i just need to figure out a way to cool this puppy down a bit more..

..she was fine in the winter, hotter, but not excessively, and i've not seen the temp light on at all yet...
..every mod (action) necessitates a (reaction) mod..

zombie

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Re: thermostat for water cooled super 9
« Reply #21 on: April 24, 2012, 02:35:01 AM »
Try shorting the wire at the sender. It may not be working if it is melting fans...
"They have nothing in their whole imperial arsenal that can break the spirit of one Irishman who doesn't want to be broken."   Bobby Sands...

wordslinger

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Re: thermostat for water cooled super 9
« Reply #22 on: April 24, 2012, 02:37:34 AM »
..yeah, it gets hot, bro...i've completely melted one, and the next one i put in, after repairing split cvt cooling hose, has melted around the edges.....
..every mod (action) necessitates a (reaction) mod..

zombie

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Re: thermostat for water cooled super 9
« Reply #23 on: April 24, 2012, 02:40:31 AM »
I don't know what kind of heat the seals can take... I imagine they would be even hotter!
"They have nothing in their whole imperial arsenal that can break the spirit of one Irishman who doesn't want to be broken."   Bobby Sands...

wordslinger

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Re: thermostat for water cooled super 9
« Reply #24 on: April 24, 2012, 02:44:37 AM »
...well, she's sittin over there in th corner...till winter, maybe...lmao!!!
..every mod (action) necessitates a (reaction) mod..

thebatman

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Re: thermostat for water cooled super 9
« Reply #25 on: April 24, 2012, 02:48:36 AM »
That is just crazy that she gets that hot...
I had found a kit for mine but it uses the oem head... I'm nervous awaiting your outcome...
It's looking oem for me...
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wordslinger

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Re: thermostat for water cooled super 9
« Reply #26 on: April 24, 2012, 02:52:52 AM »
...well, the head might be fine, but check out josh's pics on the jugs water jacket differences...amazing....
..every mod (action) necessitates a (reaction) mod..

thebatman

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Re: thermostat for water cooled super 9
« Reply #27 on: April 24, 2012, 02:58:11 AM »
well, the head might be fine, but check out josh's pics on the jugs water jacket differences...amazing....

I did see that.. Then i got nervous..
I think i found the prima kit he used.
I thought it was a kit on bertha, not a re-bore
I found a Naraku 70 but it looks like the water jackets are alot smaller compared to the malossi i had.
Plus it uses the oem head.. all that may cause the same heat issue
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wordslinger

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Re: thermostat for water cooled super 9
« Reply #28 on: April 24, 2012, 02:59:51 AM »
..the prima kit is just that, basically...an oem re-bore...
..every mod (action) necessitates a (reaction) mod..

zombie

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Re: thermostat for water cooled super 9
« Reply #29 on: April 24, 2012, 03:01:18 AM »
Hey Guys!!! I know a fella to talk to. Louie from SPI. He, and his buddy just finished a Yama Zuma using the Polini Evo from the S9 that has Dyno'ed at 31 HP. This guy is a world class tuner, and is Very willing to help.
I talked to him about a Mina case idea I have, and he didn't hesitate to suggest the S9 evo kit for it. (loads of adapting but worth it)
http://www.spi-parts.com/
number is top left on the page
"They have nothing in their whole imperial arsenal that can break the spirit of one Irishman who doesn't want to be broken."   Bobby Sands...

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