Results 1 to 11 of 11

Thread: 93 ZXR400 fork oil weight?

  1. #1
    Join Date
    11th July 2006 - 17:01
    Bike
    FXR1fiddy
    Location
    Albany, Auckland
    Posts
    509

    93 ZXR400 fork oil weight?

    Changing the oil in my track 93 ZXR400 front forks. I picked up some 10w Motul on Friday and changed the oil today in just one fork.

    The return on the shock I have changed is a lot slower than the unchanged one. Doesn't seem to be any noticeable difference in compression rate.

    I am not sure what weight oil is in the unchanged one but standard is 5w with 85mm air gap.

    Just to add some more info into the mix I just checked the zxrworld.co.uk forums and the racers there seem to use 7.5w.

    So my question is should I just change the other one to the 10w as well and give it a go, change it later if it doesn't work out, or would it be recommended to just go lighter weight now?

    Thanks

  2. #2
    Join Date
    9th June 2006 - 22:34
    Bike
    avanti sprint
    Location
    Wanganui
    Posts
    818
    setting rebound is dependent on a number of variables, keen to see what the suspension pro's recommend.....

  3. #3
    Join Date
    11th July 2006 - 17:01
    Bike
    FXR1fiddy
    Location
    Albany, Auckland
    Posts
    509
    Yeah I am not specifically trying to tune the rebound but noticed it had changed significantly with the 'push down on the fork leg' test.

    If it makes any difference to the recomendations I suspect most of the riding will be at Puke over summer maybe with a dabble at Hampton Downs.

  4. #4
    Join Date
    31st January 2005 - 11:15
    Bike
    Meads speed 650R
    Location
    feilding
    Posts
    1,027
    hmmm this stuff can be i bit of a black art... have you changed spring rate?? are you using heavier oil to "stiffen" it up??

    Simply out i would rebuild the other fork to what ever you have done - even if the other fork contains 10w it could be from 1993 when dino fossis were stil being found in oil!

    Make them the same then adjust from there.
    Chappy

    Come see what the fuss is about....................http://www.californiasuperbikeschool.co.nz/

  5. #5
    Join Date
    11th July 2006 - 17:01
    Bike
    FXR1fiddy
    Location
    Albany, Auckland
    Posts
    509
    Thanks Neil.

    Yeah I was trying to 'stiffen' them up a bit. Thinking about it now I spose I should have started with fresh 5w and gone up if I needed seeing as I have no idea when the last fork oil change was (ever?).

    Any better brand of fork oil? I have seem RT reccomend Maxima. The local has Motul, Belray and I think they should be able to get Maxima in.

  6. #6
    Join Date
    11th June 2007 - 08:55
    Bike
    None
    Location
    New Plymouth
    Posts
    5,043
    Quote Originally Posted by boostin View Post
    This quote is hidden because you are ignoring this member. Show Quote
    Thanks Neil.

    Yeah I was trying to 'stiffen' them up a bit. Thinking about it now I spose I should have started with fresh 5w and gone up if I needed seeing as I have no idea when the last fork oil change was (ever?).

    Any better brand of fork oil? I have seem RT reccomend Maxima. The local has Motul, Belray and I think they should be able to get Maxima in.
    Heavier oil in cartridge forks will only ''stiffen up'' bypass bleed and have little effect when the shim stacks open.

    Ph: 06 751 2100 * Email: robert@kss.net.nz
    Mob: 021 825 514 * Fax: 06 751 4551

  7. #7
    Join Date
    31st January 2005 - 11:15
    Bike
    Meads speed 650R
    Location
    feilding
    Posts
    1,027
    Yeah is the normal track that people try, unfourtunately its a bit.... as rob has told me.... catching the horse after it had bolted.

    The forks do work well if you can throw a set of heavier springs in it, thats all i have and what ever oil ohlins or Rob put it in them. The valving in them is very basic but can be moddified.

    its all dependant on your riding style and weight. oh and that thing called $$$
    i'm currently trying to save up to throw about $1500 into my front end...

    Quote Originally Posted by boostin View Post
    This quote is hidden because you are ignoring this member. Show Quote
    Thanks Neil.

    Yeah I was trying to 'stiffen' them up a bit. Thinking about it now I spose I should have started with fresh 5w and gone up if I needed seeing as I have no idea when the last fork oil change was (ever?).

    Any better brand of fork oil? I have seem RT reccomend Maxima. The local has Motul, Belray and I think they should be able to get Maxima in.
    Chappy

    Come see what the fuss is about....................http://www.californiasuperbikeschool.co.nz/

  8. #8
    Join Date
    20th May 2007 - 12:07
    Bike
    ZX7r
    Location
    Auck Land
    Posts
    103
    I'm pretty sure Kawasaki road bikes take KYB #1 fork oil, which is 5w in most other brands.
    You used 10w so that would slow and stiffen the forks a lot.
    The best thing to do is consult Mr Robert Taylor about this. He helped me set up my bike and on this subject he is a LEGEND.
    ZX Rider

  9. #9
    Join Date
    11th July 2006 - 17:01
    Bike
    FXR1fiddy
    Location
    Albany, Auckland
    Posts
    509
    Yeah I have now put it back to 5w. It seems to have fixed the slow rebound I was worried about, I think...

  10. #10
    Join Date
    28th April 2004 - 11:42
    Bike
    tedium
    Location
    earth
    Posts
    3,485
    Quote Originally Posted by boostin View Post
    This quote is hidden because you are ignoring this member. Show Quote
    Yeah I have now put it back to 5w. It seems to have fixed the slow rebound I was worried about, I think...
    You fixed the non working brakes on that thing yet? Gotta say I loved the ZXR motor but the front end on it was awful.


    and shhh...it's a 1989
    Quote Originally Posted by Kickha
    This quote is hidden because you are ignoring this member. Show Quote
    Fuck off, cheese has no place in pies
    Quote Originally Posted by Akzle
    This quote is hidden because you are ignoring this member. Show Quote
    i would could and can, put a fat fuck down with a bit of brass.

  11. #11
    Join Date
    11th July 2006 - 17:01
    Bike
    FXR1fiddy
    Location
    Albany, Auckland
    Posts
    509
    Hmmm working on the brakes, better but still squishy. Might rebuild the master cylinder and if that doesn't work might to the calipers, and if that doesn't work then who needs brakes?

    Going out to Puke this weekend to check it all out.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

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