Upgrade from 2.5 to 3.3
I have an older revo with a 2.5 in it and I've always wanted to upgrade to a 3.3. I'm thinking about doing it in the near future but had a question. What's the difference between the ips shafts and multishaft? Is one better than the other? And what other parts did I need for the swap? I'm not a racer but I want as much speed as possible.
You can send the 2.5 to traxxas, and upgrade to a 3.3 for a bit more of 100.00
They both are the crankshaft; IPS shaft is the standard shaft which comes with the vehicles. Read up on it [url=http://traxxas.com/products/parts/engines/trx33-details]here[/url].
5407 TRX 3.3 Engine, IPS shaft with recoil pull starter:
For use in all Traxxas TRX 2.5 and TRX 3.3 equipped vehicles. Pull starter can be removed to install the Traxxas EZ-Start® system (sold separately).
5409 TRX 3.3 Engine, multi-shaft with recoil pull starter:
Includes threaded crankshaft inserts for "short" and "standard" applications. Pull starter can be removed to install the Traxxas EZ-Start system (sold separately).
5404 TRX 3.3 Engine, IPS shaft without starter:
For use in all Traxxas TRX 2.5 and TRX 3.3 equipped vehicles with flywheel access. Requires use of an electric bump starter or starter box. Does not accept a pull start or the Traxxas EZ-Start system.
5406 TRX 3.3 Engine, multi-shaft without starter:
Includes threaded crankshaft inserts for "short" and "standard" applications. Requires use of an electric bump starter or starter box. Does not accept a pull start or the Traxxas EZ-Start system.
With the multi-shaft you'll need additional parts to make it work in your vehicle. There was a good thread about this with photos in this engine forum within the past week or two.
Here's my delima, my 2.5 has about a gallon through it. I can go do power up for $110, or buy the 3.3 outright for $140. I can see if my 2.5 was junk and trading it in but it's not. What's a good asking price if I were to sell my 2.5 in the marketplace?
I would run the dawg out of the 2.5 until it is needing replaced. I think you couldn't get more than the $30.00 difference in the new vs power up price. Unless you had a buddy who wants the motor. I put a 3.3 in my T-Maxx this week and man, what a difference!
Just buy the 3.3 new. The trade up program is really not worth it.
Keep the old 2.5 motor for backup.
[QUOTE=Colby;5415050] I put a 3.3 in my T-Maxx this week and man, what a difference![/QUOTE]
What kind of difference? What else did you have to replace? Have you broke and parts on the truck because if the upgrade being more powerful
[QUOTE=ericg2000;5423064]What kind of difference? What else did you have to replace? Have you broke and parts on the truck because if the upgrade being more powerful[/QUOTE]
Well, mine is in a T-Maxx and not a Revo but the only thing that has been upgraded is a resinator pipe. When I get the motor tuned and warm you have to be careful on take off or it will do a back flip. I need a wheelie bar but all that I have seen seem to cilp to the round stock bumper and mine has a flat aluinum bumper. I'm sure things in the drive train will break and I will upgrade them as the do.
Right now I'm running a 15/36 gearing, would that be ok if I drop a 3.3 in my revo or should I go back to the previous 15/38? I want speed but I want some wheelies too