Author Topic: Magnesium waterpumps  (Read 3390 times)

0 Members and 1 Guest are viewing this topic.

Offline pecrazy

  • B-Grade
  • ***
  • Posts: 257
    • View Profile
Magnesium waterpumps
« on: October 31, 2017, 08:23:53 pm »
Got a couple CR's that have the dredded magnesium water pumps, just wondering if it is worth using liquid intelligence for bikes that may get ridden once or twice a year or just use distilled water and drain after ridding and leave dry.

Offline Hoony

  • Legend
  • *****
  • Posts: 4309
  • Melbourne, Vic.
    • View Profile
Re: Magnesium waterpumps
« Reply #1 on: October 31, 2017, 09:02:45 pm »
use a waterless coolant like evans i think they recommend. mine now has a billet cover to stop the rot.
Long time Honda Fan, but all bike nut in general, Big Bore 2 stroke fan.    http://www.youtube.com/watch?v=XJoKP6MawYI
1985 Honda CR500RF "Big Red"
1986 Honda CR250RG
2005 KTM 300EXC "The GruntMeister" ( I love that engine)

Offline Woody

  • A-Grade
  • ****
  • Posts: 395
  • Heaven #70
    • View Profile
Re: Magnesium waterpumps
« Reply #2 on: November 01, 2017, 08:36:28 pm »
I used Liquid intelligence in my '83 CR and it seemed to slow the process. Like Hoony though, I ended up getting an alloy cover for peace of mind.
WANTED 

1988/89 125 - CR KX YZ   
YZ125G, YZ250H and YZ80G parts
IT200 stuff
CR250RD parts

Offline djr

  • C-Grade
  • **
  • Posts: 112
    • View Profile
Re: Magnesium waterpumps
« Reply #3 on: November 01, 2017, 08:48:56 pm »
does anyone know what coolant Honda recommended when these CRs were new ?
never had one of these bikes, but if I did I would probably use a 50-50 mix of water + good antifreeze with corrosion inhibitors and drain between rides
there is a lot of mixed reviews of Evans Waterless Coolant { and similar products } some people love it, and some people  finding engines running hotter when Evans etc. are used


Offline pecrazy

  • B-Grade
  • ***
  • Posts: 257
    • View Profile
Re: Magnesium waterpumps
« Reply #4 on: November 02, 2017, 06:21:43 am »
My DT200r runs 11 degrees hotter with liquid intelligence, ran back to back tests on the road on the same day. I compared Liquid intelligence to distilled water and coolant.

Offline djr

  • C-Grade
  • **
  • Posts: 112
    • View Profile
Re: Magnesium waterpumps
« Reply #5 on: November 02, 2017, 10:08:51 am »
My DT200r runs 11 degrees hotter with liquid intelligence, ran back to back tests on the road on the same day. I compared Liquid intelligence to distilled water and coolant.
[/
That backs up a lot of peoples results when using Evans etc. In cars & bikes , some people are getting increases a lot more than 11 degrees 
but it shouldn't be surprising as most of these "waterless" coolants are just about 100% Glycol , which doesn't transfer heat as well as water .
This is probably why motor manufacturers ( and antifreeze manufacturers) generally recommend 50/50  mixes, up to a maximum of 65% antifreeze / 35% water
Personally I wouldn't be changing anything on a bike/ car etc. Which caused it to run at a higher temperature 
( but this is just my opinion, other opinions are available)

Offline Woody

  • A-Grade
  • ****
  • Posts: 395
  • Heaven #70
    • View Profile
Re: Magnesium waterpumps
« Reply #6 on: November 02, 2017, 11:28:24 am »
I haven’t taken any temp readings or scientific proof but I would have to say that my CR ‘appears’ to run cooler with the LI than when I was running socool.
WANTED 

1988/89 125 - CR KX YZ   
YZ125G, YZ250H and YZ80G parts
IT200 stuff
CR250RD parts