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Thread: specs for a ltd mod animal?

  1. #1
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    specs for a ltd mod animal?

    does anyone know where (if at all) a person could find online, the complete specs to do a limited modified animal build?
    thx!

  2. #2
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    Open wallet. Dump a pile of cash, until you get someone's attention.

    Lol

    Depends on your budget, and the competition. Jimbo at faster motors offers some recipes for different budgets on his website.

    For a real basic example.

    Wf short block and head. Change cam and coil. Alky carb, per your rules.

    Race the bejesus out of it.

  3. #3
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    Stock stroke crank/billet rod, stock ported head with oversize valves and dual valve springs, stock rockers, big cam, better coil, alky bowl carb? Did I miss anything? I've got a worn out stocker animal thinking about doing something with, don't have the money to go all out open, thought maybe a limited - mild open might be a good project.... Thx!

  4. #4
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    I have several options for you.
    Call me and i'll point y0u in the right direction.
    Wake up America!

  5. #5
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    anyone with kart motor knowledge maybe know......how close power wise is a limited mod animal to a blue wazoom animal? I'm thinking the two have to be pretty close, except for the camshaft choice for the blue wazoom version.....?

  6. #6
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    Not familiar with the animal wazoom. The flathed version was slightly better than the superstock.

    With what you listed, your mild open build should be a lot better.
    Make your parts choices carefully, should run good for a long while.

  7. #7
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    I guess my version of limited modified would be stock block and crank, any stock size overbore piston, any length rod, stock valves. Stock head. Any cam, stock rockers, any springs, larger spec carb and intake, stock style flywheel and coil.
    Last edited by 95 shaw; 05-18-2018 at 01:51 AM.

  8. #8
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    Limited flathead is pretty much a stocker with a long rod/piston combo, bigger cam, double valve springs, & a 304WX carb. About a 50% gain in power over a stocker.
    Doesn't sound like what you are wanting to build.


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  9. #9
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    Im not 100% entirely certain, but I believe the animal blue wazoom has a stock and stock stroke crank, billet aluminum stock length rod, standard bore cylinder with wiseco aluminum piston, untouched head, stock size valves with dual springs, unknown aftermarket cam and a small zama bowl type carb on alcohol and a standard rlv pipe with muffler....guessing maybe along the lines of a limited mod, but maybe not quite there?

  10. #10
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    Quote Originally Posted by spincycle View Post
    Im not 100% entirely certain, but I believe the animal blue wazoom has a stock and stock stroke crank, billet aluminum stock length rod, standard bore cylinder with wiseco aluminum piston, untouched head, stock size valves with dual springs, unknown aftermarket cam and a small zama bowl type carb on alcohol and a standard rlv pipe with muffler....guessing maybe along the lines of a limited mod, but maybe not quite there?
    Yes.

    The cam and carb are the limiters.
    Small changes to get to be a limited. Lots of relatively cheap things you can do to make more power from either of these combos.
    Also can be done in stages to be easier on the budget.

    Make sure the short block is in good shape first, then cam and matching springs, carb and intake, port work and big valves, ratio rockers, etc.
    Long rod and matching piston is a good upgrade for little money difference if bore size needs changed. Dome for more compression, if you want. etc.

  11. #11
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    One more thing to keep in mind.

    Generally speaking, as power goes up, reliability and driveability go down.
    Finding the balance for your budget, track size, and mechanical ability become a concern.
    The biggest, baddest engine sitting in the infield as the checkered falls did little for the driver.

    Sometimes, the simple combo that keeps running is the ticket.

  12. #12
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    I run an open class on a relatively small track, we are all running the basic blue wazoom animal, I'm giving up overall weight to everybody, trying to figure out a way to have just a little more motor without going overboard and having something I can't handle or drive effectively.... Thx!

  13. #13
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    If you can or want to tune a tillotson, the one listed above will likely be a upgrade from the zama. The wf carb converted to alky would be good also.

  14. #14
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    Quote Originally Posted by spincycle View Post
    I run an open class on a relatively small track, we are all running the basic blue wazoom animal, I'm giving up overall weight to everybody, trying to figure out a way to have just a little more motor without going overboard and having something I can't handle or drive effectively.... Thx!
    Just install one of Jimbo's domed pistons - that will help on compression. Uses stock length rod and stock rings. That should be that little "something extra" that you are looking for without making tons of changes.

    Personally, the first thing I'd do is dump that carb for something better.

  15. #15
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    ive put a 304wx on it, seen a nice difference on performance and smoother acceleration, of course, always trying to look for a little more while trying to be mindful of the $$$$$ being spent.....

  16. #16
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  17. #17
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    Quote Originally Posted by spincycle View Post
    ive put a 304wx on it, seen a nice difference on performance and smoother acceleration, of course, always trying to look for a little more while trying to be mindful of the $$$$$ being spent.....
    I have some stickers that add 10 hp.

    Says so right on them. lol

    https://www.ebay.com/itm/This-Sticke...ed3425:m:mQrrS

  18. #18
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    gonna get the cylinder bored and oversize replacement piston/rings, bigger valves with dual springs, head ported with matched intake/carb and bigger/better camshaft, gonna stay with stock stroke crank/stock length billet rod and call that good enough......decided that reliability was the most important, may try some of the more exotic stuff next time around...thanks for all the input, much appreciated! btw- 95shaw, I did order a couple of them stickers just for a conversation piece...LOL

  19. #19
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    Lol

    Come west August 18.
    https://m.facebook.com/lincojrraceway

    See video.

    You'll know as much about the track as the locals.

    Don't put too many stickers on.

    Stay and race on Sunday at the track.
    Bring friends.
    It'll be funnnnn...
    Last edited by 95 shaw; 05-23-2018 at 12:36 AM.

  20. #20
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    Quote Originally Posted by spincycle View Post
    gonna get the cylinder bored and oversize replacement piston/rings, bigger valves with dual springs, head ported with matched intake/carb and bigger/better camshaft, gonna stay with stock stroke crank/stock length billet rod and call that good enough......decided that reliability was the most important, may try some of the more exotic stuff next time around...thanks for all the input, much appreciated! btw- 95shaw, I did order a couple of them stickers just for a conversation piece...LOL
    motor finished and on the kart, gonna give it a run tonite for the first time, showed right at 33hp on a local kart engine shop dyno, sure hoping it makes me poop my pants...LOL!

  21. #21
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    Hot Dog that sounds like fun.
    It should make things interesting for sure.

  22. #22
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    well, I raced it last nite at a brand new track located in Crete Ne, Tuxedo Raceway Park, 1/6th mile and HAD A BLAST! the motor performed flawlessly, didn't poop my pants tho thankfully , but man all that power just wore this old man out. Cant wait to race it again next Saturday nite!

  23. #23
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    ive got a new tilly 304wx on alcohol on the engine, its got three weekends on it, i'm still having trouble getting it to take off on starts, still wants to stumble, low side is about 2 3/4 out, high at 1 out, how much more out can I safely go on the low side before I run out of threads? ive bumped the idle rpm to about 3100 which helps on the starts, except when everyone gets jumbled up and I have to slow down/hit the brakes momentarily...im gonna say after the build was all said and done, the motor is probably something a little more than a typical "limited mod", but not necessarily a flown blown open, is maybe the 304wx not enough carb? is there a model of tilly that might be better for my motor in anyones opinion? THX!

  24. #24
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    Make sure none of the idle holes by the throttle are plugged.

    Also, does your clutch give the engine some room to run up before locking? Or are you already locked coming to the green?

    My 304 was giving problems last 2 races.
    Went to start Sunday, and throttle shaft was stuck.
    Put carb off spare and was good all around.

    Need more stickers?!!! Lol

  25. #25
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    What stall rpm is your clutch set at? Maybe it needs to be a little higher?

  26. #26
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    Clutch is set up to engage 5800 - 5900....id sure think that would provide for enough "run up"....i actually took the low side needle all the way out, I don't have another right now to compare too, but the end of it doesn't come to a sharp point, almost looks like the tip may have broke off, is that at all possible/common? The high side needle comes to a sharp point....

  27. #27
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    My clutch was not unlocking (too much airgap).

    Was going to look at carb needles over lunch, but can't get to it in trailer.
    Will look later.

  28. #28
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    Here is an old thread. Freezeman had an interesting comment near the end.

    https://karting.4cycle.com/showthrea...-drill-pattern

  29. #29
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    5800 – 5900, is that close to peak torque! Does it drop below that rpm when the clutch locks up? If it does, that shows a loss of torque.

  30. #30
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    Quote Originally Posted by 95 shaw View Post
    Here is an old thread. Freezeman had an interesting comment near the end.

    https://karting.4cycle.com/showthrea...-drill-pattern
    This was written gas tilly but It is the same for alcohol except for drill patterns.
    https://www.kartpulse.com/article/54...or-tuning-tips

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