• Welcome to RCTalk! 🚀

    Join the #1 RC community where hobbyists connect, share, and get expert advice on RC cars, trucks, boats, drones, and more!

    • Friendly & passionate RC enthusiasts
    • RC tips & troubleshooting
    • Buy, sell & trade RC gear
    • Share builds & upgrades

Mach .28 in a maxx?

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, and others.

DoYouKnowzMe

Gone - bye bye.
Messages
15
Reaction score
0
Points
0
RC Driving Style
  1. Bashing
  2. Racing
I have about 3 Mach .28 motors laying around and i would like to put one in my tmaxx

i'm talikng about this motor
2e31ngn.webp

what would i need?
i have the tmaxx w/o extended chassis.

or should i just make a dual engine max with 2 mach.28's???

heres my max now
34ov57n.webp

2qth0fr.webp
 
Last edited:
I believe all this will get you running:
Big block conversion: http://www.rc-monsters.com/proddetail.php?prod=FLM16050&cat=71
Pipe: http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXDVK7&P=7
Header: http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXCAM7&P=7
Clutch/Flywheel: http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXGWY3&P=7
Flywheel nut: http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXDLF5&P=M
Spur: http://shop.rc-solutions.com/T-Maxx-Big-Block-Gear-54-tooth-066.htm
Hardened Bell: http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXBL93&P=7
Shim kit: http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXNT03&P=ML

And stock up on diffs and center axles. ;)

I had one about 8 years or so ago... was a never ending "break, replace, break, replace" cycle with the trans and diffs. I eventually upgraded the trans to all steel (robinson racing) and also an alloy trans case. The diffs also were upgraded to alloy cups, alloy cases. Revo spec diffs would hold up much better though, so maybe try that instead. Might be cheaper, especially since you can get new revo diffs off ebay fairly cheap.
 
Last edited:
Aside from future driveline issues, the engine should be a direct replacement to the trx series. I was planning on dropping in the axial .28 but went with the 2.5r instead to save my driveline!
 
Aside from future driveline issues, the engine should be a direct replacement to the trx series. I was planning on dropping in the axial .28 but went with the 2.5r instead to save my driveline!

Yeah... that's not right. A big block will not fit into a t-maxx without an alternate chassis and rear center axle and all the other stuff I listed.

2.5cc = .15ci
3.71cc = .28ci

The foot print for a big block is longer and wider. It's also quite a bit taller.

This was mine with an XTM BB conversion chassis:
2004-0518-21Maxx-exhaustlow.JPG
 
Aside from future driveline issues, the engine should be a direct replacement to the trx series. I was planning on dropping in the axial .28 but went with the 2.5r instead to save my driveline!
Yup I am with Old on that one....no way would it fit with out the longer chassis. Mine had a Sirio .30 and now a LRP .28. Here is a link to it. I have done a LOT of upgrades to it since this too.
https://www.rcnitrotalk.com/forum/showthread.php?t=75504

I haves since went with the FLM hybrid diffs with Ofna Spyder diffs and FLM shock towers too. All RRP tranny guts....it is pretty solid now.
https://www.rcnitrotalk.com/forum/showthread.php?t=76378
I am also running a Savage spur gear and slipper clutch to hold the crazy power of the LRP. So a few mods would need to be done to make your engine work.
 
My bad guys! I was thinking of the dynamite mac 2 .19T! Beats me how i messed that up?
 
Last edited:
Back
Top