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  1. #561
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    I remember you have the same problem last year DJ. I have to think that it's somehow your climate since it's the same overheating with two different engines.

    The fuel you came up with may be the solution, but I would wait until the pinch on the .21TM is gone first.

    I ran mine yesterday and today w/outside temps 71% and temps didn't go past 210% w/ 30% O'Donnell's.

    Have you tried any other fuel besides the sidewinder, or is that all you can get?
    REVO LRP .30x

  2. #562
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    Quote Originally Posted by revonitro
    I remember you have the same problem last year DJ. I have to think that it's somehow your climate since it's the same overheating with two different engines.

    The fuel you came up with may be the solution, but I would wait until the pinch on the .21TM is gone first.

    I ran mine yesterday and today w/outside temps 71% and temps didn't go past 210% w/ 30% O'Donnell's.

    Have you tried any other fuel besides the sidewinder, or is that all you can get?
    Do you meant by pinch on the engine is to wait till it consume a gallon ?
    forgive me bro because sometimes i can keep up with American slang

    i got Hong Kong made 25% nitro that comes in gallons without any label on the container.. but i didn't try it as i know it's low quality.
    last year i tried this 25% on the trx3.3, it raised it's temp more worse.

    it's impossible to me run anyway below 250F after less than 10 min.

  3. #563
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    ... yeh, i forget to ask this also : is it possible that if the fuel went bad
    or altered that it could be a reason behind raising the engine's temp ?

    i think that my fuel is o.k, but everythings is possible .

  4. #564
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    Quote Originally Posted by Desert JATO
    Do you meant by pinch on the engine is to wait till it consume a gallon ?
    forgive me bro because sometimes i can keep up with American slang

    i got Hong Kong made 25% nitro that comes in gallons without any label on the container.. but i didn't try it as i know it's low quality.
    last year i tried this 25% on the trx3.3, it raised it's temp more worse.

    it's impossible to me run anyway below 250F after less than 10 min.
    Yes the piston and sleeve pinch. Your engine is still new and probably still tight. As that metal contact wears the engine will loosen up causing less friction or heat. It will also get stronger.

    Mine loosen up before or right at the gallon mark.
    REVO LRP .30x

  5. #565
    RC Turnbuckle Jr. Desert JATO's Avatar
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    i'm counting consumed fuel by tanks with engine. it's now 30tanks
    that's 75x30= 2250ml = 2.25 liters so far.
    i'm also looking daily for the expected weather forecast to take my caution
    while driving it... tomorrow will be the hottest since winter came this year,
    it should be around 100F at shade after noon.

    thanks revonitro & all others for keeping up with me
    i'll keep updating
    ..

  6. #566
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    dude, i have an 18tz and i could not imagine something like a 21! i'm going to loo into this bro!

    Edited for language. If you see a starred out word in your post, the word has been blocked by the language filter. Please remove these words from your post in the future, or warning points will likely be issued.
    Last edited by cooleocool; 03-21-2009 at 08:29 AM.

  7. #567
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    yeh i know 2 guys did placed this engine on their jatos.. working great

    check your inbox PM NOW !

  8. #568
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    I got one too.......... going to on my off-roader, replace the 18tm EB.
    Slash PE & Ja-two.

  9. #569
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    Quote Originally Posted by RC-Crazy
    I got one too.......... going to on my off-roader, replace the 18tm EB.
    so that's make you guys 3 so far that's cool

  10. #570
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    Quote Originally Posted by revonitro
    Yes the piston and sleeve pinch. Your engine is still new and probably still tight. As that metal contact wears the engine will loosen up causing less friction or heat. It will also get stronger.

    Mine loosen up before or right at the gallon mark.

    That is right about where mine began to wake up too. Im just past the 1.5 gallon mark now and it is running great.
    2CH3NO2 + CH3OH + 3O2 → 3CO2 + 5H2O + N2 =Jato Fun

  11. #571
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    You .21TM guys may want to try a BB header and pipe. My engine is modded, so it is stronger, but it may give the stock .21TM better performance as well.

    I just placed a SB gasket insdie the BB one for a snug fit. I noticed an improvement as soon as I pulled it off the bump box.

    DJ, you are just over the half gallon mark. Give it some more time bro before you start to experiment to much. Mine is running like a fine swiss watch.
    REVO LRP .30x

  12. #572
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    I was thinking about putting a 21tm in my Jato when my 3.3 goes.

    What is needed to put it in? Does it drop right in? Can I use a 3.3 pull start on it?

  13. #573
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    Quote Originally Posted by revonitro
    You .21TM guys may want to try a BB header and pipe. My engine is modded, so it is stronger, but it may give the stock .21TM better performance as well.

    I just placed a SB gasket insdie the BB one for a snug fit. I noticed an improvement as soon as I pulled it off the bump box.

    DJ, you are just over the half gallon mark. Give it some more time bro before you start to experiment to much. Mine is running like a fine swiss watch.
    What header and pipe would you recommend for it? Right now i have the HPI header that you had mentioned back on page one of this thread with a drilled stock resonator. I was thinking about possibly getting the new THS pipe for it
    2CH3NO2 + CH3OH + 3O2 → 3CO2 + 5H2O + N2 =Jato Fun

  14. #574
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    THS pipe kit comes w/ header.
    Slash PE & Ja-two.

  15. #575
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    Quote Originally Posted by RobF353
    I was thinking about putting a 21tm in my Jato when my 3.3 goes.

    What is needed to put it in? Does it drop right in? Can I use a 3.3 pull start on it?
    it's a right drop in Rob. & if it can adopt the ez start system so it's pull start
    capable if you removed the ez stat.
    use the older fly wheel & it's nut from the trx3.3 and you're done.

    Quote Originally Posted by clegg
    What header and pipe would you recommend for it? Right now i have the HPI header that you had mentioned back on page one of this thread with a drilled stock resonator. I was thinking about possibly getting the new THS pipe for it
    make sure that you buy the hard coated ( THS144H )
    one - not the aluminum polished - because it got a wider stinger.
    Last edited by Desert JATO; 03-21-2009 at 05:07 AM.

  16. #576
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    just came back from outside doing some runs to complete few tanks.
    the outside temp was perfect tonight exactly 71F with winds blowing, but this
    didn't help my engine cooler.
    if i made some speed runs it's o.k but if stopped or did some slow speed
    back & forth along the street it raised to 266-271 ( body on ).

    finally i set over the cars hood i kept the truck running at idle waiting
    to empty the tank ( body off ) it raised to 286F
    so i shut it down at once.

    i guess that i have to carry out that fuel mixture. better to me to solve this
    before the outside temp reach 125F on day.

  17. #577
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    got my 21tm install & run. what I can say is..........WOW!!! , alot more low end power than my 18tm. Awesome!
    Slash PE & Ja-two.

  18. #578
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    How is the 21tm on the tranny and drive train?

  19. #579
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    I ran for 4 tanks today, I loosen the spur gear clutch by 1/2 turn from bottom........ so far so good.
    Slash PE & Ja-two.

  20. #580
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    i'm keeping it 1 1/4 out a turn out. i'd rather prefer to keep in the safe side

  21. #581
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    i made the hard decision today and add the moded fuel ( nitro fuel + octane booster mixture ). i really got no choice but to do this.. running a single tank
    is kind of suffering and it should be at night.

    anyway, the outside temp after noon were exactly 104F today and i ran it at direct sun beam with body off.

    temp were from 219-188 at the glow plug with no speed runs
    if I kept it idling for few minutes stand still it will raise to 242F

    i say i love it that way. the only issue now is that it looks like that i have to
    retune the engine.. i'll go back to the manual to check this.. so if any one know how much turns from close for both needles it would be helpful

  22. #582
    RC Turnbuckle Jr. Desert JATO's Avatar
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    o.k.. default setting for HSN is 2 1/2 turn out from close.
    & for the LSN, aka Metering Needle it's 30 deg clockwise to lean and vice versa to rich.
    Last edited by Desert JATO; 03-23-2009 at 01:59 PM.

  23. #583
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    Glad you on to something with the temps DJ.

    Clegg.

    I have tried both chrome THS pipes, the larger and the small stinger version, and liked them both. Didn't see a diff in perfromance.

    The BB pipe i'm running seems to be the best so far, but I am still testing the set up.
    REVO LRP .30x

  24. #584
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    Good job on getting th temps down DJ. That environment must be tough on those engines.

    Revonitro what pipe are you running now? Considering you said that the THS didnt show much performance i will just stick with the resonator for now. I wont be able to even run my Jato until late May again so hopefully by then someone will have a good pipe combo for it.
    2CH3NO2 + CH3OH + 3O2 → 3CO2 + 5H2O + N2 =Jato Fun

  25. #585
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    I think I might buy a Jato locally today.

    It has a 21tm, Vantage pipe and a few other upgrades. The guy only ran about 6 tanks on the truck and motor.

    He is asking $250 for it RTR. Its a good deal so I'm going to get it.

  26. #586
    RC Turnbuckle Jr. Desert JATO's Avatar
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    thanks guys for encouraging real test just ahead ... late july

    Quote Originally Posted by RobF353
    I think I might buy a Jato locally today.

    It has a 21tm, Vantage pipe and a few other upgrades. The guy only ran about 6 tanks on the truck and motor.

    He is asking $250 for it RTR. Its a good deal so I'm going to get it.

    that's a very fine deal Rob i really can't believe it !!
    the .21TM costs 299 if i still recall... so it's not a good deal .. it's a perfect DREAM deal

    just check everything quadro ( 4 times not triple ) i still not believe that
    anyone would sell this with this price

  27. #587
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    I just got back from meeting the guy with the Jato. I bought it for $250.

    Its a Jato 3.3 with an OS21tm, Vantage carbon fiber pipe and Integy piggyback shocks.

    I took the shocks off and put on some stock ones back on it. I also took the motor off and took the EZ Start off and put on a pull start.

    Now I need to know a few things:
    -what are the factory settings for the 21tm?
    -what setting should my slipper be set to?

    I will update later with some pictures of the Jato.

  28. #588
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    Quote Originally Posted by RobF353
    ....

    Now I need to know a few things:
    -what are the factory settings for the 21tm?
    -what setting should my slipper be set to?

    ....
    Factroy setting from o.s support i just received today:

    "Thank you for contacting product support. Here are the factory settings. Needle Settings:
    - High Speed Needle (Needle Valve) 2-1/2 turns out from close.
    To break-in close approximately 30 after running one tank
    of fuel through vehicle, repeat five times
    - Mid Range Needle (Mixture Control Valve) Screw head is exactly
    1/2 turn in from flush with the carb body
    - Low Speed Needle (Metering Needle) Turn 30 clockwise to lean
    mixture or counter-clockwise to richen mixture"

    Mike M
    Product Support Technician
    Great Planes Model Distributers
    PS9021


    incase of silpper adjustment, revo nitro advised me to start with 1 & 1/2
    turns from close.
    myself ended up with 1 & 1/4 turns. i don't want to take no risks.

    .... btw, cong's for this perfect deal

  29. #589
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    Here are some pictures, got it all for $250.












    As you can see, the truck is in great shape. Only a few minor scratches on the chassis and a few on the cooling head. I'm going to run and tune it tomorrow. Can't wait to see how it runs.

  30. #590
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    i got a question...compare the 3.3 motor with the picco .26 red dot or the os .21 whats overall better and which one last the longest? what do the warranties cover? im new to rc's! thanks for any info!!!

  31. #591
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    Quote Originally Posted by GIFTS
    i got a question...compare the 3.3 motor with the picco .26 red dot or the os .21 whats overall better and which one last the longest? what do the warranties cover? im new to rc's! thanks for any info!!!
    revonitro got the best answer ....
    actualy he were the 1st to install the 21.TM & the red dot on the jato
    as far as i know....

  32. #592
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    Desert, what do you think of the Jato?

  33. #593
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    true fun truck.. yes some of it's parts would damaged if crashed front nose
    first but this is because it's a speedy thing.
    with some skills that everybody should got ... such hits will be avoided.
    i think that speed is the most important factor in the rc world wheather
    it's electric or nitro... the jato has this factor for real.

  34. #594
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    Hey RobF353, you got a goooooooooooooooooood deal! the engine itself cost about the same when new.
    Slash PE & Ja-two.

  35. #595
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    Desert.....I meant what do you think of my Jato lol.

    RC-Crazy......yea, the engine usually goes for $250+, plus I got a pipe that costs $80 and basically a brand new truck.

  36. #596
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    r u running it on or off road?
    Slash PE & Ja-two.

  37. #597
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    Quote Originally Posted by RC-Crazy
    r u running it on or off road?
    Havent decided yet, probably a mix of both.

  38. #598
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    I would go for 22/54 gearing & upgrade to steel CVD for such hi power engine.
    Slash PE & Ja-two.

  39. #599
    RC Turnbuckle Jr. Desert JATO's Avatar
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    Quote Originally Posted by RobF353
    Desert.....I meant what do you think of my Jato lol.

    ...


    hahaha.... sorry
    it appears very new. you can judge if it's under chassis color as you showed
    plus ( which is the most important, the condition of the rear driving shaft boots. it's almost brand new ).

    i say you got the best deal ever i sew. i don't think that anyone will like
    this ever : almost a new jato + o.s engine 21 + a CF vantage pipe + biggypack shock sets for only $250 totally insane.

    the wierd thing tha he didn't added the rpm a arms & the front bumper,
    although he placed .21TM on board plus all these high class upgrades !

    it just flipped once at least ( scratch on the roll bar and the cooling head )
    beside this very new.
    happy for you man

  40. #600
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    Nice setup revonitro. I was wondering what I would need to see benefit from my ofna force .26 carb using my stock jato 3.3 motor? Will i see any improvement with it on a stock motor?

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