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Old 06-12-2008, 08:38 PM   #1
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Default which engine size best for truggy, .21 or .28?

im expecting my x2 in a couple of days, i wonder what engine size is best for racing it:

would it be a .21, or the new .28s in the market.. if it's a .21, which among my choices: OS speed, nova 7ports or nova 367?...

if it's gonna be a .28, my choice would only be the new nova .28, but should it be the - 3port, 5port or 7port?

thanks
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Old 06-12-2008, 08:47 PM   #2
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I'm running an OS .28 XZ with a 2060 pipe right now. Unbeleivable power, and 8:30 to a tank is making me very happy right now.

The OS Speed is a very fast, and fuel efficient engine. They can get expensive though..
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Old 06-12-2008, 08:53 PM   #3
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it really just depend on what your doing with it
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Old 06-12-2008, 09:02 PM   #4
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This is basically a ford vs chevy debate.

People who read a magazine will swear to the 21. Others will swear to the 28.

I personally run a RB 728 in my mugen and love it. Couldnt ask for a better motor with a 14t CB and a JP3 pipe.
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Old 06-12-2008, 09:38 PM   #5
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Quote:
Originally Posted by Flying Monkey View Post
This is basically a ford vs chevy debate.

People who read a magazine will swear to the 21. Others will swear to the 28.

I personally run a RB 728 in my mugen and love it. Couldnt ask for a better motor with a 14t CB and a JP3 pipe.
Agreed. I see guys using the Jammin .21 in their truggies and they fly. Just get something with great fuel mileage, reliable, and all around good powerband.
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Old 06-12-2008, 10:42 PM   #6
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I could get into all sorts of techni-speak, and offer a lot of differing reasons for going either way - but the most basic example is that while I usually prefer to run a .21 in my own truggy, it's not only just as fast as my buddies that are running .28s but I get a lot better mileage.
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Old 06-12-2008, 10:49 PM   #7
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I run a CEN TR Factory with a .21 PICO. My local track is Revaltion, I run stock gearing and need more bottom and top. I'm down to a couple .21 motors. I want something I can run 6-7 gallons threw and is easy to tune.

What do you think of the.

O.S. 21VZ-B V-Spec EB Mod w/21C Slide Carb???

EB mod V-spec motors have some bad reviews of missing parts and subpar assembly???

Or a.

O.S. Speed 21 VZ-B V-SPEC AL

Tower has a cool flex play on the OS motors... I just want a solid mill.

I know they have the .28 truggy motor, I just feel I might be a little squirley with a .28 and mileage???

I was also told RB has a long life span and is a good peice.

RB Concept WS7 TURBO L2G

How about the WASP???



Thanks
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Old 06-12-2008, 10:56 PM   #8
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that new Ninja motor is KILLER for any truggy! allot less than the speed but provides more bottom and has a killer top end! cant beat it for the cash.

http://momentum-rc.com/publicforum/v...ded1ca516f32b8
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Old 06-13-2008, 01:23 AM   #9
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.21 is more than enough with right clutch setup and .28 will make it easier for short run ups...but a powerful .21 is enough...we're talking vspecs,nova's,grp's,etc.

.28's os,nova,werks,etc.
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Old 06-13-2008, 03:08 PM   #10
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I have been very impressed with the go tech .25 , very good top , bottom , and run times as well , perfect for a truggy in my opinion
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Old 06-14-2008, 01:52 AM   #11
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Quote:
Originally Posted by Flying Monkey View Post
This is basically a ford vs chevy debate.

People who read a magazine will swear to the 21. Others will swear to the 28.

I personally run a RB 728 in my mugen and love it. Couldnt ask for a better motor with a 14t CB and a JP3 pipe.
Yeah always CHEVY!! hahahahaha!
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Old 06-14-2008, 07:31 AM   #12
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In the Chevy vs. Ford thing, I have to stay neutral. MOPAR--->

For the the .21 vs .28 I run them both. Depending on the track size and turf you will have to be the judge. In the past two years I have run RB 928 and 728 with great success. 728 has so much torque that it can climb a tree with little to no effort. The 928 is just an insane 728 that wants you to beat on it! for a smaller track, just run a 21. For larger more technical tracks I would run a .28. If your track is dry with little traction go with a .21 . If you have good traction, a 28 (especially a RB 28) is very hard to beat!
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Old 06-14-2008, 07:44 AM   #13
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RB .21 or RB .28. nuff said.

I go for Toyota. JGR all the way.
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Old 06-27-2008, 03:06 PM   #14
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WE did a pretty indepth article with Scott Hughes on the Pros/Cons of each size engine.

.28 have more power, but will also get you into trouble more. I'd say if you're racing go for a .21 (all the pros are doing it ) and if you're just a weekend racer who cares that they have an insane fast truck and can't keep it on the wheels (which a .28 will make it harder to do) go for the .28.
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