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Old 05-05-2009, 06:41 PM   #136
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They do come super rich from the factory for break in.
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Old 05-05-2009, 06:58 PM   #137
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Yup, that is rich from the factory for break-in. You might want to try flush on the low speed and 1/4 turn IN from flush on the high speed as a starting point if your motor is not brand new.
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Old 06-08-2009, 08:04 PM   #138
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Quote:
Originally Posted by Jaz240 View Post
factory break in settings are super rich! you can lean slightly if your engine is not new, or until it fires
What's supose to be a good setting for the first start?
The factory setting look too much rich to fire the first time...
Thanks for the help
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Old 06-08-2009, 08:22 PM   #139
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Quote:
Originally Posted by triloya View Post
What's supose to be a good setting for the first start?
The factory setting look too much rich to fire the first time...
Thanks for the help


1/4 turn 1/2 turn....dont go overkill....you need it to still be on the rich side...but just enough to get it started.
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Old 06-17-2009, 01:12 PM   #140
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Can any one tell me how this engine does in a truggy?

I had a JPX .28 in an 8ight-B, never raced, and it was wicked. Had to gear it up +3.
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Old 06-17-2009, 01:32 PM   #141
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I run a JPX .21 in my Jammin X2 truggy and it has more than enough power. I am running it with a JP4 and I am getting around 9 minutes of runtime on a tank. Hope this helps.
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Old 06-17-2009, 01:40 PM   #142
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Originally Posted by losifiend View Post
Can any one tell me how this engine does in a truggy?

I had a JPX .28 in an 8ight-B, never raced, and it was wicked. Had to gear it up +3.

Most people prefer it in Truggy, as the power is almost too much for a buggy
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Old 06-17-2009, 08:59 PM   #143
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Thanks guys. I'm defenitly going to put that on my list then. I have a JP3. I dont know if thats better or worse for run times, compared to the JP4, but I'll slap it on and see what happens.
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Old 06-17-2009, 09:22 PM   #144
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Thanks guys. I'm defenitly going to put that on my list then. I have a JP3. I dont know if thats better or worse for run times, compared to the JP4, but I'll slap it on and see what happens.
Try the 053, or 086 pipes you will get better run times than any of the JP's

I would go 086 on large open tracks where you use allot of top end, and 053 on everything else. also get the Ofna pipes, that double bent manifold that looks like this ] will greatly increase your bottom end, which is slightly lacking on the Jammin engine
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Old 06-17-2009, 10:16 PM   #145
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I have ran both the JPX .21 & .28 with great results. The .28 has an abundance of power in a truggy. (to much in fact) but I love running it in A truggy on a wet high traction track. The .21 is def. the best for racing. I have owned 2 JPX.21'S and 1 JPX .28. At aprox. 2 1/2 gallons I replaced the bearings with TKO ceramics and when I quit running them at aprox 9 gallons they still ran awesome. Infact I still have them cleaned and ready to run when I am ready. I have not tried the picco glow plugs or the OS. I do know the taper on a OS & picco are completely different. I have always ran the Novarossi C5 or C6 ULTRA plugs with a perfect fit, great idle and crisp response.
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Old 06-18-2009, 05:44 AM   #146
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I have a gallon through my first .21
Must say that I love this engine. So much power and an easy tune,

I think I will be stuck on these engines for a while.

For a beginner like me it has made life easy.
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Old 06-18-2009, 08:37 AM   #147
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Originally Posted by Jaz240 View Post
Try the 053, or 086 pipes you will get better run times than any of the JP's

I would go 086 on large open tracks where you use allot of top end, and 053 on everything else. also get the Ofna pipes, that double bent manifold that looks like this ] will greatly increase your bottom end, which is slightly lacking on the Jammin engine
Are those OFNA numbers or OS? I think you were trying to post pictures but they didnt come through.
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Old 06-18-2009, 08:44 AM   #148
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Ofna Pipe numbers, here are links:

053 pipe set:

http://www.amainhobbies.com/product_...oad-Tuned-Pipe


086 Pipe set:

http://www.amainhobbies.com/product_...oad-Tuned-Pipe

You will see the shape of the header I am referring too, its make a world of difference with the Jammin, or any other Top end engine. remember the more ports an engine has, the more top end (speed) it has. The less ports, the more bottom end (torque) it has
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Old 06-21-2009, 11:54 PM   #149
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Default Jammin

Any idea what is happening with the Jammin JPX .21 & .28 engines. Was considering buying another JPX.21 and it looks like most companies are out of stock, Amain, Nitrohouse etc. Just wondering if they are being discontinued,changed or what ?
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Old 06-22-2009, 08:46 AM   #150
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try performance rc hobbies 208-676-9616.

you can also check thier web site but not everything is up on there yet. i know they have the JPX .21 and .28 in stock for sure! i just saw them there.

www.performancerchobbby.com
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