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Old 09-14-2004, 09:46 PM   #1
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Default for the same price: JP X12 or JP FX

They cost about the same; which one would you pick?
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Old 09-15-2004, 12:43 AM   #2
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I don't know this for sure, but I am fairly sure they are the same engine with a different head button and different colored head.

They are both novarossi based engines. They use the same case and con rod. Not positive if the X12 (Mugen JP X12S3) has the filled crank. I am also not sure which piston (MCP or not) each uses. It probably depends when they were produced as to if they are the same or not.

The Bling Bling factor goes to the FX.

All of this depends on if you are talking about the mod version of the FX. IF you are talking about the stock version of the FX, then get the JP X12 which is a JP modded version of the mugen.
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Old 09-15-2004, 10:56 AM   #3
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I once thought the JP FX is solely produced under JP Plant. Well, I would pick the JP FX for its Blue head!

Quote:
Originally posted by Scott Fisher
I don't know this for sure, but I am fairly sure they are the same engine with a different head button and different colored head.

They are both novarossi based engines. They use the same case and con rod. Not positive if the X12 (Mugen JP X12S3) has the filled crank. I am also not sure which piston (MCP or not) each uses. It probably depends when they were produced as to if they are the same or not.

The Bling Bling factor goes to the FX.

All of this depends on if you are talking about the mod version of the FX. IF you are talking about the stock version of the FX, then get the JP X12 which is a JP modded version of the mugen.
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Old 09-15-2004, 11:07 AM   #4
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I have a JP FX motor in a serpent 710 I get 5 1/2 minute run time with the motor tuned at 220 it is very very fast and consistent I origionally broke in the motor on 30% Odonnell but switched to 20% after running it I am very pleased it was easy to tune and came off at the same temp after a 30 minute main at regionals last weekend.
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Old 09-15-2004, 11:38 AM   #5
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I have the JPX12 and it has the filled crank and the flow directors on the sleeve. However, it doesn't have the IDM style ports like the FX on JP's website. But the JPX12 still is a fast motor.
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Old 09-15-2004, 11:40 AM   #6
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So, the rumor that it woudn't last a 5-min qualify is not true then. How hot do you usually run the engine? That might be the factor.

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I have the JPX12 and it has the filled crank and the flow directors on the sleeve. However, it doesn't have the IDM style ports like the FX on JP's website. But the JPX12 still is a fast motor.
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Old 09-15-2004, 11:59 AM   #7
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Quote:
So, the rumor that it woudn't last a 5-min qualify is not true then. How hot do you usually run the engine? That might be the factor.
Nah, I ran it at 235 at the 2004 nats in Toledo got about 5:30. At my local track which is very small I can get close to 6-min at 255-260.
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Old 09-15-2004, 05:34 PM   #8
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I'm running a STOCK JP Fx12, and my partner, James is running a Murnan modified Mugen X-12, and we're within a second of each other in laotimes, running the same basic set up, Mugen pipe, and same gear ratio, his car looks faster, but they're close. My JP has the stock, non fanged sleeve.
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Old 09-15-2004, 05:35 PM   #9
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I had trouble making 5 mins. at 1st but tuned on the lowspeed a lil and it's doing 5 mins. and a lap now.
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Old 09-16-2004, 02:16 AM   #10
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Default JP X12

Were did you guys get the JP X12 from?
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Old 09-16-2004, 03:14 AM   #11
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I got my first one from nitrohouse, and my second one from a guy that sold it a week ago on the for sale forum here on RC tech
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Old 09-16-2004, 10:07 AM   #12
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My local hobby shop ordered it from mugen.
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Old 09-16-2004, 04:02 PM   #13
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Default Mugen X12 JP Mod

Atomic Hobbies has them in stock for $399.99 www.atomichobbies.com
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Old 09-17-2004, 12:49 AM   #14
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Default Re: Mugen X12 JP Mod

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Atomic Hobbies has them in stock for $399.99 www.atomichobbies.com
It say that its a "standard plug" do they make a turbo plug?
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Old 09-17-2004, 02:05 AM   #15
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The mugen engine as well as the JP version uses the standard glow plug only. For about $25 or so you can get a turbo button. Any of the Novarossi (Top, nova, rex) turbo buttons will fit.
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