Improve water pump impela

Central location for technical tips and information

Moderators: rztom, silverstrom

Post Reply
Message
Author
ron
Posts: 103
Joined: Fri Sep 06, 2013 4:51 pm

Improve water pump impela

#1 Post by ron » Fri Jun 30, 2017 2:27 pm

Hi.. has anyone tried this water pump lmpela.. Is it worth the money?
Attachments
water impeler red.JPG
water impeler red.JPG (5.91 KiB) Viewed 6406 times

evan_calgary
Posts: 1368
Joined: Tue Nov 12, 2013 2:34 am

Re: Improve water pump impela

#2 Post by evan_calgary » Fri Jun 30, 2017 6:54 pm

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.

ron
Posts: 103
Joined: Fri Sep 06, 2013 4:51 pm

Re: Improve water pump impela

#3 Post by ron » Sat Jul 01, 2017 3:22 am

What I mean is, does this type of impela works much better, then the original ( you will get better cooling)

Ron

User avatar
JonW
Posts: 10599
Joined: Sat Oct 10, 2009 4:33 am
Location: Sydney
Contact:

Re: Improve water pump impela

#4 Post by JonW » Sat Jul 01, 2017 4:00 am

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?
80 XT500 Supermoto!
81 RD350LC Resto
82 RD421LC Hybrid
82 RD350LC decapitation project
82 RD250LC JDM '251LC' YPVS
83 RZ350 Resto
84 RZ500 Resto
85 RZ350 F1 Resto
86 RZ350 F2 Resto
86 RZ350 F2 Hybrid

Like Watches? www.PloProf.com & www.DeskDivers.com

ron
Posts: 103
Joined: Fri Sep 06, 2013 4:51 pm

Re: Improve water pump impela

#5 Post by ron » Sat Jul 01, 2017 5:24 am

I got a rod like this on my bike
Attachments
1984-Yamaha-RZ350-Engine-730x411.jpg
1984-Yamaha-RZ350-Engine-730x411.jpg (80.54 KiB) Viewed 6352 times

Bare
Posts: 1196
Joined: Sun Jan 29, 2006 2:18 am
Location: vancouver

Re: Improve water pump impela

#6 Post by Bare » Sat Jul 01, 2017 11:23 am

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.

whyzee79
Posts: 99
Joined: Tue Jul 23, 2013 2:16 pm

Re: Improve water pump impela

#7 Post by whyzee79 » Sat Jul 01, 2017 12:02 pm

Do a fan mod instead.

ron
Posts: 103
Joined: Fri Sep 06, 2013 4:51 pm

Re: Improve water pump impela

#8 Post by ron » Sat Jul 01, 2017 3:34 pm

This is my bike. So I should not go for the custum impela... it will not improve the cooling?
Attachments
_IMG_000000_000000.jpg
_IMG_000000_000000.jpg (153.47 KiB) Viewed 6320 times

Hooligan
Posts: 1966
Joined: Mon Aug 20, 2012 1:37 am
Location: Calgary, Alberta

Re: Improve water pump impela

#9 Post by Hooligan » Sat Jul 01, 2017 3:48 pm

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.
'82 RD350LC in '81 colours, OEM pipes, UNI filters
'85 FZ750

User avatar
JonW
Posts: 10599
Joined: Sat Oct 10, 2009 4:33 am
Location: Sydney
Contact:

Re: Improve water pump impela

#10 Post by JonW » Sat Jul 01, 2017 8:33 pm

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...
80 XT500 Supermoto!
81 RD350LC Resto
82 RD421LC Hybrid
82 RD350LC decapitation project
82 RD250LC JDM '251LC' YPVS
83 RZ350 Resto
84 RZ500 Resto
85 RZ350 F1 Resto
86 RZ350 F2 Resto
86 RZ350 F2 Hybrid

Like Watches? www.PloProf.com & www.DeskDivers.com

ron
Posts: 103
Joined: Fri Sep 06, 2013 4:51 pm

Re: Improve water pump impela

#11 Post by ron » Sun Jul 02, 2017 7:07 am

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)...

silverstrom
Moderator
Moderator
Posts: 7030
Joined: Wed Mar 24, 2010 2:20 am

Re: Improve water pump impela

#12 Post by silverstrom » Sun Jul 02, 2017 5:44 pm

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.

ron
Posts: 103
Joined: Fri Sep 06, 2013 4:51 pm

Re: Improve water pump impela

#13 Post by ron » Thu Jul 06, 2017 4:05 am

I just keep it as it is.. thanks..

User avatar
jimrd
Posts: 1012
Joined: Sun Jun 13, 2004 9:59 pm
Location: Toronto
Contact:

Re: Improve water pump impela

#14 Post by jimrd » Thu Feb 15, 2018 9:45 am

Hooligan wrote:
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.

I agree LC are terribly cold

four corner piston lock up a few times , they have to warm up , before you ride
1964 Austin Cooper S 1071cc
1967 Austin Cooper S vintage race car
1999 Ducati ST 4
1981 RD350LC , R1 Front,toomey pipes, Barnet Clutch, ported , PJ carbs, R1 Speedo 01
1983 RZ 350 - stroker bike,R6 rear shock,tapered stem bearings,progressive springs,

RuZty
-----
-----
Posts: 3584
Joined: Fri Oct 03, 2003 11:11 pm
Location: Southern Ontario, Canada

Re: Improve water pump impela

#15 Post by RuZty » Thu Feb 15, 2018 10:58 am

As mentioned earlier, there is no point improving cooling if you don't have heat problems. I have the same rad and a 55 deg C thermostat and the stock temp gauge never goes above halfway unless it idles for a long time. I do not ride in traffic, if you do a fan would help. Summer temperatures here are probably same or a bit higher than Denmark.
To answer your original question, if the impeller flows more coolant (without cavitating) it will improve cooling up to the radiators ability to pass the heat on to the environment. More mass flow of coolant and greater temperature difference between the coolant and engine will result in better heat exchange. The same happens between the radiator and air, a greater mass of air at a lower temp moving over the rad sheds more heat, which is why fans help at low speed and the engine runs cooler on cold days. Same laws apply to getting heat into the coolant and getting it out again.

Post Reply