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  1. #1

    Default Tire heat question

    Have a metric hobby and after coming off track the rr tire is hot but the lr isnt. Is this normal or is something wrong. Car dosent handle bad but isnt a rocket ship. Here is what the scale numbers on it lf 943, rf 636,lr 734 rr 851 left side 53, right side 47.1 rear 50.1 rear bite 119 The springs are lf 1000,rf 900, lr 300, rr250 qa shocks on all corners

  2. #2
    Join Date
    Aug 2010
    Posts
    19

    Default

    Yes you have a problem, you are 119# RR heavy and only 43.3 cross. Do you have weight jacks? Give us more detail like what kinda track you're racing on, tacky, slick? Long, short? Low banked, high banked?

    The more info you can provide, the better advice we can give you.

  3. #3
    Join Date
    Sep 2011
    Posts
    104

    Default

    You have -119# bite

  4. #4

    Default

    Quote Originally Posted by nthdrt View Post
    Have a metric hobby and after coming off track the rr tire is hot but the lr isnt. Is this normal or is something wrong. Car dosent handle bad but isnt a rocket ship. Here is what the scale numbers on it lf 943, rf 636,lr 734 rr 851 left side 53, right side 47.1 rear 50.1 rear bite 119 The springs are lf 1000,rf 900, lr 300, rr250 qa shocks on all corners
    we run on a 1/3 and 3/8 high banked dirt. imca class track is tacky for heats and most times turns to dry slick for features. any ideas?

  5. #5
    Join Date
    Aug 2010
    Posts
    19

    Default

    Work on getting your LR to weigh more than your RR, shoot for at least 49-50% cross, you're at 43.3 right now.

    See how you like that, then report back.

  6. #6

    Default

    Thanks for the help (to the front) We used someone elses scales and hell be gone for a while so i guess it will be trial and error. Were going to start by moving rear springs around and see what happens. This could be interesting.

  7. #7
    Join Date
    Aug 2010
    Posts
    19

    Default

    Don't change the rear springs unless you have some with lower rates. Swap the front springs around, 900LF 1000RF.

    Do you have adjustable spring buckets on top of the springs in the front?

    You can check your rear bite without scales by placing a 5/8" socket on top of a floor jack & jack the rear of the car up by the center of the rearend. You want the RR tire to come off the ground before the LR. I'd shoot for something like 2-3" or so.

    Thats an old school way of doing things, but it will get you in the ballpark until you can get back on some scales.

  8. #8

    Default

    no adjustable buckets but we do have lower number rear springs.Would you say swap the frt springs and do the jack thing by using lighter rear springs if needed thanks for the help

  9. #9
    Join Date
    Aug 2010
    Posts
    19

    Default

    If you want to use what you have, I'd put the 250 in the LR and a 225 or 200 in the RR and try it out.

  10. #10
    Join Date
    Aug 2010
    Posts
    19

    Default

    nthdrt, let me know if I can help you with anything else, you can PM me from now on.

  11. #11
    Join Date
    Dec 2007
    Location
    Red Dirt USA
    Posts
    1,024

    Default

    Your springs are close enough for now.The rates are not that far off from what i recommend for my customers.

    Your best bet is to add adj. spring spacers to the front springs.

    I usually try to get 52-53% rear weight, and 90-125lbs of LR bite.

    Try this before buying/swapping springs.

  12. #12
    Join Date
    Jun 2011
    Posts
    9

    Default

    Quote Originally Posted by stock car driver View Post
    He has a 50 rear split now, changing to 25 wont change but 20 lbs of bite MAX approx.

    Putting the 250 200 would do nothing, same split hes already got.

    If your new to this scale stuff you shouldnt really be advising others.

    Well, that's one more person you've run off this board. I know several now that will only reply on PM because of you. Good job guy!

  13. #13
    Join Date
    Aug 2010
    Posts
    19

    Default

    Quote Originally Posted by stock car driver View Post
    Thats good if its true.

    Nobody needs to be told incorrect information on here, lol.

    Ive gotten over 40 friend requests on fb thanks to the thread on this forum where I posted my info for 2 days. Also another 15 emails asking for help, it appears there are more people who want good and correct help then there are total street stock posters on this forum...
    Wow man, get a life. Did you beat your meat while you typed that?

    One can only hope that you didn't reproduce, not sure if there's enough room on earth for another ego like yours.

    I've been registered on this board for a couple years now but I haven't posted anything because I knew this idiot would get on here and have something stupid to say, didn't take long did it!

    All hail the mighty one Jeff J who is the only person in the world that knows anything about setting up a racecar, nobody else on this board has ever made a car work the way he can, just ask him!

    Seriously man, you're eat up with dumbass.

  14. #14
    Join Date
    Aug 2010
    Posts
    19

    Default

    nthdrt, disregard anything I suggested, ask Jeff J for help, he knows the only way to make it work.

  15. #15
    Join Date
    Aug 2010
    Posts
    19

    Default

    Yea you're right, changing spring rates and moving weight around to achieve a different set of numbers on scales cannot be done unless you are in charge.

    Seems as if you came in after me and told him to work toward the same goal by a different means, the only way, the Jeff J way.

    I told him to work with what he has, you jump in and tell him to spend more $$.

    I do things one way & make it work, you obviously do things your very own way and make it work.

    If anybody is "butt hurt" it's you, because someone else came on here and offered advice other than what you consider the only way, the Jeff J way.

    Either way, it's all yours boss, you da man!!!!

  16. #16
    Join Date
    Jun 2011
    Posts
    9

    Default .

    Jeff,

    How many times do you have to be told... WE..DO..NOT..CARE if you are right or wrong or even try to correct someone.
    It's your stinking ATTITUDE when you do it. Are you really that much of an idiot that you do not see this ? Or do you just not care ?

  17. #17
    Join Date
    Aug 2010
    Posts
    19

    Default

    Yea I get it, you're always right & everybody else is always wrong, you push this point everytime you post.

  18. #18
    Join Date
    Aug 2010
    Posts
    19

    Default

    Going to softer rear springs was just part of what I suggested, CLEARLY isn't the only thing I suggested he do, not sure why you're so hung up on that?

    I also said to swap the front springs & work with his weight in order to get more on the LR, after all most hobby stocks do have lead, maybe he doesn't? Either way....

    I didn't get the opportunity to discuss anything further with the OP, you came in & said I was lazy because I suggested softer springs, can someone else confirm who threw the first punch here?!

    For you to call someone else arrogant, WOW is all I can say.

    I didn't intend on getting into a pissing match with you but you came in & did as you do with everyone who tries to help anyone out on here, start with your same old (not a nice word)(not a nice word)(not a nice word)(not a nice word) about how nothing anyone suggests works, but yours does.

    You're the only person on here that argues with everybody, I guess that means that everyone else is wrong, make sense don't it lol.

  19. #19
    Join Date
    May 2007
    Posts
    1,289

    Default

    like this?

  20. #20
    Join Date
    Nov 2008
    Posts
    359

    Default

    In IMCA hobby stocks, the use of Ballast and adjustable spring spacers is illegal, FWIW.

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