RZ/RD 350 & Misc. 2-Stroke Tech BBS

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PostPosted: Fri Jun 30, 2017 2:27 pm 
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Hi.. has anyone tried this water pump lmpela.. Is it worth the money?


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PostPosted: Fri Jun 30, 2017 6:54 pm 
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Without any further information that is essentially a useless question.

Are you having cooling issues? If not, then no, its not 'worth the money'.

Who makes the impeller? You have only provided a picture.


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PostPosted: Sat Jul 01, 2017 3:22 am 
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What I mean is, does this type of impela works much better, then the original ( you will get better cooling)

Ron


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PostPosted: Sat Jul 01, 2017 4:00 am 
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Assuming it does what it says, ie flows faster, then so long as the water is cooled adequately by the rad then it will flow cooler water round the motor, but... if your rad aint cooling the water properly or you pass the water thru too fast, its just moving more water round thats still hot. You need to know what you want with cooling i think... big rad, faster impeller, better 'juice' all make changes, but are they what you need?

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PostPosted: Sat Jul 01, 2017 5:24 am 
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I got a rod like this on my bike


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PostPosted: Sat Jul 01, 2017 11:23 am 
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Location: vancouver
DIY Radiator? Whats that bit of drain pipe doing?
Faster water flow thru an engine is often Bad... , known for creating localized Hot spots and the grief that follows.
Water needs to be in contact with a hot surface long enough to absorb as much heat as it can.
One of the reasons God gave us thermostats.


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PostPosted: Sat Jul 01, 2017 12:02 pm 
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Do a fan mod instead.


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PostPosted: Sat Jul 01, 2017 3:34 pm 
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This is my bike. So I should not go for the custum impela... it will not improve the cooling?


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PostPosted: Sat Jul 01, 2017 3:48 pm 
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Location: Calgary, Alberta
ron wrote:
What I mean is, does this type of impela works much better, then the original ( you will get better cooling)

Ron


Better cooling is hardly an issue with these bikes. LCs are terribly cold blooded and take forever to warm up. More cooling is not something that would help.

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PostPosted: Sat Jul 01, 2017 8:33 pm 
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you may well find that with USDs there isnt enough flow for a standard width rad, plus you dont say where you live... i live in Sydney and its hot (well it isnt today, but usually) so i have a wider and larger rad, but you may be in Siberia...

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PostPosted: Sun Jul 02, 2017 7:07 am 
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Live in Denmark... and I normally run about 70/80 Celsius..(koso clock)whit a thermostat Ktm 55 degrees... and the temperature is about 25 Celsius..(not like Sydney)...


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PostPosted: Sun Jul 02, 2017 5:44 pm 
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If you have a 55C thermostat and you are still running hot you have a bigger problem than your impeller. If you run consistently at 70-80C you don't have a problem. Adding a cooling fan is always the best option if you run hot, such as when you are riding in the city in traffic. Adding a product like Water Wetter to your coolant does help as well.


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PostPosted: Thu Jul 06, 2017 4:05 am 
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I just keep it as it is.. thanks..


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