500 lb. koolaid man

Is a 2.5(not the R version) a direct drop-in to a .15 model? I might be able to get a 2.5 from a friend running or not for $10, it was given to him. I need to know if that would be a direct drop-in into my .15 t-maxx.

Thanks.

Edfltchr

It should bolt right in the only diff is gonna be rotary carb.15 to slide carb 2.5 for 10 bucks I'd buy it in a heartbeat

crazy 8t

My Feedback: (3)

ive done it not worth it you need a 2.5 tranny to get anny more of a increase in performance there geared different

Pacific Rider

The exaust manifold is different, and throtle linkage. The tranny is the same, motor mount,clutch bell are all the same. Flywheel is the same but has a different nut on it.
Easy start or pull is different.
Good luck.

Edfltchr

Yea I forgot about exhaust but still for 10$ I'd convert it. Keep adding on and work your way to putting a 3.3 on that bad boy [>:]

DaveG55

It is NOT a direct drop in. You can get a conversion kit from Traxxas, Tower or on e-bay - they're usually around $25 I think. That will take care of everything except the starter system.
I've done it too and contrary to what crazy8t said. I thought the performance increase was worth the effort, And no real problems from the upgrade.
If the 2.5 runs then it's worth the $10. If it does not run then, IMHO, it's worth is as a paperweight. Absolutely not worth rebuilding or doing an exchange because you can get them new off e-bay for less than the engine exchange program.
If you want a good engine to put in that truck check out the OS.18 CV-RX(s). That's about as close to a direct drop in hop-up engine as you'll find.

crazy 8t

My Feedback: (3)

yes there is a little but i mean they are 100% geared different im shore of it but there is a little increase and like what daveg55 said if it runs hells yes but if it doesnt and it will be a hassle then dont

DaveG55

Actually, the transmission in the Pro.15 and the 2.5 versions are the same except for the way the primary shaft connects together. The internal gears are all identical and interchangeable. You can see for yourself at Traxxas website. They provide blow-up diagrams and parts lists free.

500 lb. koolaid man

Thanks for all the help guys!

Edfltchr

Bute Dave the question was will a 2.5 fit? Thats not the same mount as a 2.6 or 3.3 I know the 15 carb is rotary. Just learning so please tell me.

DaveG55

Yes, it will fit IF you get the conversion kit - which comes with a new tuned pipe, manifold, bellcrank, and linkage kit.
http://www3.towerhobbies.com/cgi-bin...?&I=LXDAJ7&P=7
Everything else (except the starting system) will transfer from the Pro.15 to the 2.5/2.5r/3.3 including the motor mount, flywheel and clutch shoes.
You will have to get a pull start or ez-start system (including a new owb) that is compatible with the 2.5/2.5r/3.3 as the one from the Pro.15 will not fit the 2.5/2.5r/3.3 engines.

For the record, anything that fits externally on a 2.5 will also fit the 2.5r AND the 3.3