Traxxas 2.5R Tear Down Inspection and 3.3 crank mod

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  • Опубліковано 16 січ 2025

КОМЕНТАРІ • 66

  • @williamchisholm5776
    @williamchisholm5776 4 роки тому +2

    Good to see a master at work teaching us to fix our own problems and mistakes

    • @thebug4046
      @thebug4046  4 роки тому

      Hey man glad you enjoyed the video there will be lots more to come sense my weather is going to be terrible for the next little while so hopefully to do a lot more rebuilds possibly little bit abashing if I can keep on watchin

  • @damonbridgmon7199
    @damonbridgmon7199 Рік тому +1

    Great video!! Im so glad i came across your page!!! Looks like my 2.5r might get that 3.3 crank and a new oem piston and sleeve.. definitely getting that losi card too

    • @thebug4046
      @thebug4046  Рік тому

      Honestly if you go on ebay you can pick up the 2.5 pretty cheap buy a 3.3 crank and put the 2.5R cylinder head on and OS LC3 glow plug

    • @damonbridgmon7199
      @damonbridgmon7199 Рік тому +1

      @thebug4046 I have the 2.5r in my hands, was told it has no compression but it has decent pitch. Runs good and strong for about 10 mins and than wants a new glow plug

    • @thebug4046
      @thebug4046  Рік тому

      @@damonbridgmon7199 Yeah it's what these entrances will do when they get older they feel like they have great compassion when they're cold but as soon as they warm up they have almost nothing

    • @damonbridgmon7199
      @damonbridgmon7199 Рік тому +1

      @thebug4046 well with that being said... do I replace my 2.5 witha new 2.5 and 3.3 crank or just get a 3.3? I'm not sure if I want to spend the 100 bucks USA for the os 11k but I want a good motor on this revo.. I've been on your page for like 9 hrs today going back and fourth on my best options... I'm ready to buy something this weekend

    • @thebug4046
      @thebug4046  Рік тому

      @@damonbridgmon7199 the 11k is a little expensive but it's awesome to have and you can put it on any of your Traxxas engines. But if you go with just the 3.3 crank in your 2.5 thst will wake it up big time

  • @rogerruiz1934
    @rogerruiz1934 11 місяців тому +1

    I have a jato 3.3 After rebuild that for my jato would not start with Ez start nor Pull Start, So after watching your video a couple of times ,I torn the engine apart again and found the rear crank that goes to the back plate of engine has a hair line crack no wonder it would not crank. IT BURNS NITRO NOW 👍

    • @thebug4046
      @thebug4046  11 місяців тому

      Oh man that sucks! Glad you found it! KBN 🤘🏻🍻

  • @debbgord
    @debbgord 4 роки тому +3

    Came across your channel and not meaning to brag but a year ago I got tired of dealing with my Traxxas 3.3 engine on my revo that I bought brand new. So I swapped in a LRP .32x spec 4 and I’ll tell you one thing it was all worth the money. Just recently I got it modded and a buddy of mine that was modding it even said that it was the very first engine that he’s ever seen that didn’t need timing adjusted. I also recently bought a Traxxas Revo platinum and I’ll be swapping in a O.S .21 tm in it with a THS racing pipe.

    • @thebug4046
      @thebug4046  4 роки тому

      Hey right on im not a big Traxxas guy I just fix them for people haha

  • @ozoneswiftak
    @ozoneswiftak 7 місяців тому +1

    How much is a piston / sleeve/ bearing kit? 280.00 is to much for a new motor. Thanks for sharing prices. Its a huge factor rebuilding these. Esp for a son that might run it up a tree!

    • @thebug4046
      @thebug4046  7 місяців тому

      The 3.3 cost 320$ here and it's about 150 for a rebuild here so that's the reason. I know in the USA it's fairly cheap to buy new ones

    • @Troubledboy88
      @Troubledboy88 3 місяці тому

      @@thebug4046why are they so much more up there? On eBay I see new ones for around 160$ and a rebuild(sleeve, conrod, and piston) for 75$ and about 15$ for bearings. Do they gouge you guys with shipping?

  • @Absolutecorn5767
    @Absolutecorn5767 4 роки тому +1

    finally someone else said it. the 2.5r and 2.5 sleeve are exactly the same. just literally paying more for an anodized blue head.

    • @thebug4046
      @thebug4046  4 роки тому +2

      Yup! Just another bullshit scam from Traxxas to get you to spend more on the same thing with no benefits hahaha

    • @Absolutecorn5767
      @Absolutecorn5767 4 роки тому +1

      @@thebug4046 I want to see someone do a temp. comparison with the og head and the 2.5r head. just curious.

    • @Absolutecorn5767
      @Absolutecorn5767 4 роки тому +1

      @@thebug4046 also, you guys get boned over there for motors. a 2.5 brand new is about 120 here and the 33 is about 200

    • @thebug4046
      @thebug4046  4 роки тому

      @@Absolutecorn5767 If I can find a 2.5 cylinder head somewhere in my C of junk I will compare them on video they're both identical on the combustion chamber side just one is C&C and then anodized the other is just a cast had there's no difference people say it runs cooler and has more power i have run them back to back before and they are identical power and tuning wise

    • @thebug4046
      @thebug4046  4 роки тому

      @@Absolutecorn5767 Pretty much any RC related product with has to be brought in there is no manufacturers or suppliers here so everything cost twice as much plus our dollar isn't worth as much either right now so when you guys paid 20 we pay 50

  • @mad_mechanic
    @mad_mechanic 3 роки тому +3

    I drilled my 2.5r crank center hole and got about 5 to 10 percent increase after tuning couple years ago had about 4 tanks on it before I started having problems... Would I do it again yes but honestly just buy a different motor I am so happy with my dynamite .19 wish I would have got one sooner

    • @thebug4046
      @thebug4046  3 роки тому

      I hear ya! But it's fun to play around

    • @mad_mechanic
      @mad_mechanic 3 роки тому +1

      @@thebug4046 ain't that the truth

  • @thercguy2428
    @thercguy2428 2 роки тому +1

    Interesting i may try this with the 2.5 engine in the rustler when ever it arrives the suply chain is really bad at the monent

  • @rawrc
    @rawrc 4 роки тому +1

    Nice vids!....where do you get you sleeves pinched?

    • @thebug4046
      @thebug4046  4 роки тому

      Thanks man and I have a few guys on my Facebook group nitro/diesel/gas rc and more If you decide to join just pop up and ask there will be a few guys that will get to you

  • @KernCountyFoamFlingers
    @KernCountyFoamFlingers 4 роки тому +1

    Long time ago the 2.5 piston and sleeve used to be different from 2.5r but I believe that changed in 2006 or 2007

    • @thebug4046
      @thebug4046  4 роки тому

      It's been the same for the last 22 years since the 2.5R came out It's all lies

    • @KernCountyFoamFlingers
      @KernCountyFoamFlingers 4 роки тому +1

      @@thebug4046 I’m sure you’re right just going by what I read long ago , I’ve changed a ton of pistons and sleeves on the 2.5’s but never bothered to notice . Nice tip on the 3.3 crankshaft by the way , I’m building a 2.5 to put in my Losi lst and that should help it breathe better!

    • @thebug4046
      @thebug4046  4 роки тому +1

      @@KernCountyFoamFlingers no problem and you can ask guys like Rick from rb mod he will tell you the sam the porting on the 2.5 2 5r 3 3 all the same

  • @jacksonvillejetriders6529
    @jacksonvillejetriders6529 10 місяців тому +1

    Where does your piston/ sleeve re pinching?

    • @thebug4046
      @thebug4046  10 місяців тому

      Ray A Racing or RB Mods

  • @vkvitalykainov6497
    @vkvitalykainov6497 4 роки тому +1

    Great 👍

  • @mach389
    @mach389 4 роки тому +1

    Good stuff 👍👍

  • @cyclicracer
    @cyclicracer 4 роки тому +3

    Do you know what pullstart will fit the XTM 24.7? I was thinking the sh 25 but I'm not sure. Please help.

    • @thebug4046
      @thebug4046  4 роки тому +2

      Basically any SH pull starter i also am using a LRP 28 back plate and Which is aluminum and set of plastic there's a few left on eBay and that way you can use the dynamite LRP or SH pull starters

  • @rc_teo_nade_216
    @rc_teo_nade_216 4 роки тому +1

    Well I had a 3.3 and well it's pretty facked up because I tried repinching it without proper tools when I was about 10yo and the sleeve it's oval now lmao but I do still have everything except screws and the one way bearing lmao

    • @thebug4046
      @thebug4046  4 роки тому

      Yeah unfortunately you can't just stick it in a vise or anything like that at house to be done properly otherwise it will never run again

    • @rc_teo_nade_216
      @rc_teo_nade_216 4 роки тому +1

      @@thebug4046 yeah now I remember that I tried doing it with a vise lmao and like making it thinker with like tape at the top and squeezing it hahaha I mean it wouldn't run so I said well I am going to do it

    • @thebug4046
      @thebug4046  4 роки тому

      @@rc_teo_nade_216 That's the thing you were experimented to see what happen now you know

    • @rc_teo_nade_216
      @rc_teo_nade_216 4 роки тому

      @@thebug4046 yeah

  • @robertsoreststomsons5291
    @robertsoreststomsons5291 3 роки тому

    I am about to buy my first nitro, is it worth buying a rc with traxxas 3.3 engine or 2.5

    • @JohnDoe-ek7ic
      @JohnDoe-ek7ic 3 роки тому

      3.3 cost more and is a bigger engine

  • @pitbikecookracing3324
    @pitbikecookracing3324 3 роки тому +1

    👊

  • @jeremybenfer7627
    @jeremybenfer7627 11 місяців тому

    Is it ok to use after run oil to rebuild ur engine

  • @nitrogas5719
    @nitrogas5719 4 роки тому +2

    I’m not a fan of the 2.5r, heard they overheat like hell. It’s also sucky to see that novarossi went down and died

    • @thebug4046
      @thebug4046  4 роки тому +1

      Yeah the trx 2.5/3.3 Seem to run very hot compared to others for some reason Even with a good quality fuel they seem to be happy at almost 300゚ not a big fan

  • @rtorres2079
    @rtorres2079 2 роки тому +1

    Maybe traxxas engines are bad but you can use the traxxas power up . 3.3 engine only cost 115 dlls just take the old engine back to you local hobby shop the sell traxxas products.

    • @thebug4046
      @thebug4046  2 роки тому

      320$ Canadian or 250 trade in. We rebuild for cheaper

    • @elpelon10501
      @elpelon10501 2 роки тому

      Wells that means I m lucky just change 4 old engines trx.15. I take to hobby shop for the power up program and change for 4 trx3.3 engines for 505dlls US .