Radiator guards and cooling.
Page 1 of 3 123 LastLast
Results 1 to 10 of 23
  1. #1
    Senior Member tucksie's Avatar
    Join Date
    Jul 2014
    Location
    Berkshire
    Posts
    371
    Member #
    3654
    Liked
    36 times

    Radiator guards and cooling.

    Hello All,
    Anyone have a view or an opinion on the effect of a rad guard on cooling? Some of the guards seem to block a good percentage of the radiator and does this affect cooling, particularly in higher temperatures? Also, are mesh type guards more efficient?
    Thanks
    Last edited by tucksie; 07-25-2019 at 09:08 AM.

  2. #2
    Junior Member trevloc's Avatar
    Join Date
    Jun 2019
    Posts
    24
    Member #
    9632
    In ten years on the forum I have never seen a post by anyone saying their rad guard had made their engine overheat.

    As for a guards efficiency I guess that depends on the size of the holes and what they might let through.

  3. #3
    Senior Member tucksie's Avatar
    Join Date
    Jul 2014
    Location
    Berkshire
    Posts
    371
    Member #
    3654
    Liked
    36 times
    Not so much overheat but run hotter than normal, noticeably so in very warm weather. It could be a consideration between protecting the radiator and accepting higher engine temps perhaps?

  4. Remove Advertisements
    HondaCB1000R.com
    Advertisements
     

  5. #4
    Senior Member oldcorollas's Avatar
    Join Date
    Aug 2018
    Posts
    618
    Member #
    9082
    some guards may reduce airflow...
    but..

    at low speed, radiator efficiency is limited by the fan pulling air through... guard or not can run hot in hot weather
    and at high speed there is likely a big enough pressure difference front to back that _most_ guards make little difference..
    and temp is controlled by thermostat...

    (and does depend on the bike and how much cooling overhead the radiator has.. my NSC was fine in 40+ temps, no difference to engine temp)

    I reckon the Evotech type hex guards have almost no effect..
    Name:  PRN011172-01.jpg
Views: 37
Size:  662.4 KB

    but ones like this or worse area coverage? not so sure
    Name:  radiator-guard-honda-nc700-530x469.jpg
Views: 35
Size:  53.8 KB
    Last edited by oldcorollas; 07-26-2019 at 03:36 AM.

  6. #5
    Senior Member tucksie's Avatar
    Join Date
    Jul 2014
    Location
    Berkshire
    Posts
    371
    Member #
    3654
    Liked
    36 times
    The Evotech guard looks efficient but ive been unable to locate a similar guard for the earlier CB, without making permanent alterations to the bike.

  7. #6
    Senior Member leedsrhino15's Avatar
    Join Date
    Mar 2014
    Location
    East Yorkshire
    Posts
    131
    Member #
    3421
    Liked
    27 times
    I have a guard on mine like the one in the NC700 pic. Its been on pretty much since I got it in 2012 and I really cant remember if it runs hotter. Its run fine all the time in any weather even in this hot spell or when I've been to Europe on it. Its worth it to stop stones getting in there. Mines a Beowulf one

  8. #7
    Senior Member tucksie's Avatar
    Join Date
    Jul 2014
    Location
    Berkshire
    Posts
    371
    Member #
    3654
    Liked
    36 times
    A guard is definitely worth the peace of mind for me regarding possible damage. However, i’ve been more aware in the recent very warm weather how the engine temp soon climbs and it got me thinking more about how a guard might be affecting the cooling.

  9. #8
    Senior Member oldcorollas's Avatar
    Join Date
    Aug 2018
    Posts
    618
    Member #
    9082
    What does the engine temp climb to? >110C?

  10. #9
    Senior Member BigOne-94-14's Avatar
    Join Date
    May 2014
    Location
    Silicon Valley, CA
    Posts
    1,917
    Member #
    3528
    Liked
    228 times
    Quote Originally Posted by oldcorollas View Post
    What does the engine temp climb to? >110C?
    I've seen 238f on my old CB1000R, and I had no aftermarket guard, just the factory plastic one.


    I've never cared to look on the NSC,though I do have the EvoTech guard. It hasn't been that warm here (relatively) this year. No 110f yet, so who cares? LOL

  11. #10
    Senior Member tucksie's Avatar
    Join Date
    Jul 2014
    Location
    Berkshire
    Posts
    371
    Member #
    3654
    Liked
    36 times
    Quote Originally Posted by oldcorollas View Post
    What does the engine temp climb to? >110C?
    The engine temp briefly read 106c, which is the highest i can remember seeing in the time i’ve owned the bike (5 years approx.).
    Last edited by tucksie; 07-27-2019 at 01:01 AM.

Page 1 of 3 123 LastLast

Sponsored Links

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •