new engine help

[Hyper Rusty]

well after many gallons of fuel i have finally brought the hyper .21 on my 7 to its end. i have been wanting to replace it for a more powerful .21 engine. what would any of you guys recommend putting in.

[LSXEric]

Do u race? that would help. If ur not racing I would go up to a high end .28 like the LPR .28. 3.95hp!
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Holy crap:eek:

[Hyper Rusty]

yea, i been racing for two years now. i was thinking about the Jammin' .21JPX or something from O.S.

[Taylor]

Go with the OS i know tons of people that would swear by them! They have some much power its great! :D

[Hyper Rusty]

yeah, they are great engines. never had one fail on my tower 40. i also have guys at my track that swear by Jammin'. i'm still new to the nitro racing scene so i'm taking a poll on what everyone says.

[Taylor]

I dont think you could go wrong with either one their both great! ;)

[Hyper Rusty]

i loved the hyper .21 but sometimes it left me wanting more power on the low end, i upgraded the clutch to some jammin clutch shoe which gave me better "snap." but it still was lacking alittle.

[LSXEric]

Go with the JPX .21. Its awsome. Easy to break in great power (I recomend the JP-4 pipe) to emprove the top end a little bit. My most important thing IT HOLDS A TUNE!:cool:
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Holy crap:cool:

[j88h]

go with the o.s v spec it is like 280 dollars and everyone at my home track runs one.

[Greg B]

The Jammin .21 engine pushes my Jammin truggy around with no trouble at all. Very good torque and when matched with the Jp-4 pipe the Rev is off the chart.
One of the best I have owned. Very seldom needs tuned and sips fuel. Last night at the track, during 20 minute runs I would pit when they would announce 10 minutes. In 20 minutes you pit twice ! I can pit once. This engine allows me to push it to the limit.

Greg B.

[LSXEric]

See me and Greg have the same good luck with the JPX.21 with a JP-4!

[KID]

The Jammin .21 engine pushes my Jammin truggy around with no trouble at all. Very good torque and when matched with the Jp-4 pipe the Rev is off the chart.
One of the best I have owned. Very seldom needs tuned and sips fuel. Last night at the track, during 20 minute runs I would pit when they would announce 10 minutes. In 20 minutes you pit twice ! I can pit once. This engine allows me to push it to the limit.

Greg B.


Also, the o.s. v-specs, and GRP .21's have been know to get awesome mileage.

[Hyper Rusty]

thanks for the advice. I went with the JPX and a month later i destroyed the 7 in a race against one of my buddies. i loved the setup.