watt-man Thermobob II - Kawasaki KLR 650 Forum
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post #1 of 18 Old 04-22-2019, 05:46 PM Thread Starter
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Join Date: May 2018
Location: Michigan
Posts: 242
watt-man Thermobob II

I wanted to take this time to give watt-man.com a plug.

Friday night I ordered the kit for my new KLR and to my complete surprise it was in my mailbox today! Ordered Fri night, received Monday morning. That is service.
I saw them on Amazon Prime for a bit over $150 shipped and then went to watt-man.com and the kit was there for $129 shipped.
Each individual piece was hand wrapped in newspaper and he even included a new Allen wrench for the 3 cap head screws for the thermostat housing! It looks to me as professionally well made as any bit of kit I have ever seen for a bike.
Once again, I want to stress how satisfied I am with doing business on the website. If anyone here has been hesitant to order I hope this testimony will erase any worries you might have had about ordering this kit. I can't wait til Saturday so I can install it.

Never pick a fight with an old man.. If he's too old to fight, he'll just kill you..
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post #2 of 18 Old 04-23-2019, 09:42 AM
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Join Date: Aug 2010
Location: Kelowna, B.C.
Posts: 2,151
Bill rocks; in addition to his stellar products and top notch service, his website is one that I constantly refer to as it's full of useful and valuable information.

Cheers,
Dave
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post #3 of 18 Old 04-23-2019, 01:22 PM
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Join Date: Nov 2009
Location: Lander, Wyoming
Posts: 5,085
I concur with both postings.

pdwestman
Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 83,000+ miles & counting
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post #4 of 18 Old 04-23-2019, 03:11 PM
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Join Date: Jun 2017
Posts: 298
Quote:
Originally Posted by PaddyD View Post
I wanted to take this time to give watt-man.com a plug.

Friday night I ordered the kit for my new KLR and to my complete surprise it was in my mailbox today! Ordered Fri night, received Monday morning. That is service.
I saw them on Amazon Prime for a bit over $150 shipped and then went to watt-man.com and the kit was there for $129 shipped.
Each individual piece was hand wrapped in newspaper and he even included a new Allen wrench for the 3 cap head screws for the thermostat housing! It looks to me as professionally well made as any bit of kit I have ever seen for a bike.
Once again, I want to stress how satisfied I am with doing business on the website. If anyone here has been hesitant to order I hope this testimony will erase any worries you might have had about ordering this kit. I can't wait til Saturday so I can install it.
I installed mine Saturday and was overall very impressed. I will mention one thing though that I wish I had done differently, and one thing I may still do differently.

The first is the location of the bypass tee. Judging the tangent point is very subjective and I think I judged mine about 1/4” too close to the water pump end of the hose. My bypass hose touches lightly the one radiator hose. I think had my tee been 1/4 tp 1/2” closer to the radiator, I would have had no interference with the other hoses. I think it would be better to reference a “hard” location such as the end of the hose, rather than the tangent point. It would be more accurate to just run a tape measure from the radiator end of the hose around the outside of the hose curve to more accurately locate the cut line for the tee.

The second is the hose clamps. The one’s with the kit are pretty low quality. I don’t like clamps that use a slot rather than a cross head screwdriver and I much prefer to use a nut driver in any event. However, these clamps have a very short nut and as soon as the end of the clamp gets pulled through the gear, it hits against the nut driver pushing it off the nut. The stock clamps have a longer nut and a flange that keeps the end of the clamp from interfering with the nut driver.

So, I would say to err towards the radiator end of the hose tangency point when you cut and consider buying better hose clamps. I recently bought some very nice SS ones for my BMW from Amazon and will probably buy some for my KLR to replace the ones that came with the T-Bob.
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post #5 of 18 Old 04-23-2019, 07:33 PM Thread Starter
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Join Date: May 2018
Location: Michigan
Posts: 242
Quote:
Originally Posted by Voyager View Post
I installed mine Saturday and was overall very impressed. I will mention one thing though that I wish I had done differently, and one thing I may still do differently.

The first is the location of the bypass tee. Judging the tangent point is very subjective and I think I judged mine about 1/4” too close to the water pump end of the hose. My bypass hose touches lightly the one radiator hose. I think had my tee been 1/4 tp 1/2” closer to the radiator, I would have had no interference with the other hoses. I think it would be better to reference a “hard” location such as the end of the hose, rather than the tangent point. It would be more accurate to just run a tape measure from the radiator end of the hose around the outside of the hose curve to more accurately locate the cut line for the tee.

The second is the hose clamps. The one’s with the kit are pretty low quality. I don’t like clamps that use a slot rather than a cross head screwdriver and I much prefer to use a nut driver in any event. However, these clamps have a very short nut and as soon as the end of the clamp gets pulled through the gear, it hits against the nut driver pushing it off the nut. The stock clamps have a longer nut and a flange that keeps the end of the clamp from interfering with the nut driver.

So, I would say to err towards the radiator end of the hose tangency point when you cut and consider buying better hose clamps. I recently bought some very nice SS ones for my BMW from Amazon and will probably buy some for my KLR to replace the ones that came with the T-Bob.
Could you give me your best estimate as to just how far up the hose in inches from the water pump clamp I should cut to install the T?

Never pick a fight with an old man.. If he's too old to fight, he'll just kill you..
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post #6 of 18 Old 04-23-2019, 09:15 PM
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Join Date: Jun 2017
Posts: 298
Quote:
Originally Posted by PaddyD View Post
Could you give me your best estimate as to just how far up the hose in inches from the water pump clamp I should cut to install the T?
I didn’t measure so I any estimate I could give would be worse than simply following the installation instructions. I would say though to err towards the radiator rather than the pump when picking the tangency point. I think I was just a smudge too far away from the radiator. You should be fine.
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post #7 of 18 Old 04-24-2019, 11:03 AM
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Join Date: Sep 2018
Location: Just east of the Owyhees, SW Idaho
Posts: 7
Thumbs up

I installed the T-Bob before Xmas sometime. I was short a part and sent an email and got a reply and an apology right away. It was no big deal, shite happens. But, what was a big deal is how fast it was taken care of! I would highly recommend this product and the seller!

Yes, I would buy from him again
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post #8 of 18 Old 04-27-2019, 10:32 AM Thread Starter
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Join Date: May 2018
Location: Michigan
Posts: 242
Thermobob update..
Got off work early yesterday and spent a couple hours installing the kit. Probably could've done it in less time, but I like to take my time with these things and think before cutting. ( I suck at carpentry)
Got it all buttoned up and ran it through a couple of cycling s of the fan to check for leaks. Luckily there were none. Was a bit of a challenge to wrangle the housing in place without both disconnecting the hose and removing the fuel tank. I did prop up the rear of the tank on a block of 2X4 which helped with access.
Today, I went out and gave it a workout. Only rode about 15 miles as it is freezing ass cold and windy here in Michigan today. As Voyager testified in his post about the unit it came up to temp and never wavered from that spot on the gauge for the entire trip till I let it run in the driveway till the fan cycled again. Before it was hot then cold then hot again. Now? no fluctuations at all. Don't know how that will be when the temps get out of the high 30's though. Still, FAR better than before. Kudos to the inventor. You developed a great product that Kawasaki should've included from Japan.

Still wondering about the silver glitter in the drained coolant though. I may drain it again sometime in the near future to strain it out again just to be sure most is gone as it can't be good for water pump seals.
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Never pick a fight with an old man.. If he's too old to fight, he'll just kill you..
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post #9 of 18 Old 04-27-2019, 11:37 AM
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Join Date: Jun 2017
Posts: 298
Quote:
Originally Posted by PaddyD View Post
Thermobob update..
Got off work early yesterday and spent a couple hours installing the kit. Probably could've done it in less time, but I like to take my time with these things and think before cutting. ( I suck at carpentry)
Got it all buttoned up and ran it through a couple of cycling s of the fan to check for leaks. Luckily there were none. Was a bit of a challenge to wrangle the housing in place without both disconnecting the hose and removing the fuel tank. I did prop up the rear of the tank on a block of 2X4 which helped with access.
Today, I went out and gave it a workout. Only rode about 15 miles as it is freezing ass cold and windy here in Michigan today. As Voyager testified in his post about the unit it came up to temp and never wavered from that spot on the gauge for the entire trip till I let it run in the driveway till the fan cycled again. Before it was hot then cold then hot again. Now? no fluctuations at all. Don't know how that will be when the temps get out of the high 30's though. Still, FAR better than before. Kudos to the inventor. You developed a great product that Kawasaki should've included from Japan.

Still wondering about the silver glitter in the drained coolant though. I may drain it again sometime in the near future to strain it out again just to be sure most is gone as it can't be good for water pump seals.
When the temps get warmer or you work the KLR harder, it will run hotter. A thermostat only controls the lower end of temp. It does nothing for the high end. That is determined by the ratio of heat generation by the engine to heat rejected by the radiator.
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post #10 of 18 Old 04-27-2019, 03:16 PM
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Join Date: Jan 2019
Location: Long Island, NY
Posts: 36
Garage
Would be interesting to see how an oil cooler would work on the KLR. They make one for the XR650. Im really looking for ways to keep this thing cool this summer. I've already done the Pattman mod, where you wedge a piece of garden hose between the radiator and the shroud to block that air gap to keep more air flowing through the radiator. Any ideas? Im not interested in removing my shrouds or skid plate.

Please do not lecture me on the effects of temperature and density altitude on an internal combustion engine -Thank you.

2003 KLR650.... With all the bells and whistles
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