Jammin JPX 21 Plus ( new)
08-30-2009, 05:56 AM
#1
Jammin JPX 21 Plus ( new)
I had to wait a while to get a new Jammin 21 from my local crackhouse, and when it came in it was the new Plus version. I see the head has been drilled,and carb is a little different. I plan on breaking in starting later today.Does anyone know if theirs any other changes to this engine. I cant wait to try this .21 in my truggy. I have been running .28 Jammins for acouple years with great luck.And I will be watching my lap times to see if they improve. 
08-30-2009, 09:25 AM
#3
I just picked mine up yesterday from the LHS. I havent had a chance to start the breakin process yet but I must say it sure is nice and shiny outside 
08-30-2009, 11:41 AM
#4
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jpx .21
Any pics of the new engine
08-31-2009, 04:57 AM
#7
Ended up waiting to go get a new flywheel instead of one I had. Looked a little closer and saw a little wear on the pins. So I didnt get to fire my new .21 plus today. No hurry been raining for days, are big club race of the year,rained out both days. I will get back with some info when I can. Theirs more info on this engine in the Ofna site, they just put it up a day ago. And their are internal changes. Look under Press Release in the Ofna site.
09-02-2009, 06:03 PM
#9
Just started bench break in tonight. After preheat, this engine fired with just one bump and sat their and idled perfect. Ran a couple of tanks and a few heat cycles tonight, and will pick where I left off tommorrow. Myself and a couple buddies where very impressed with this engine so far .
09-02-2009, 08:57 PM
#10
hmm if jammin got the runtime up to 9-12 min i will be impressed. old jammins were getting 7:30-8:00 of fuel
09-02-2009, 09:05 PM
#11
Ended up waiting to go get a new flywheel instead of one I had. Looked a little closer and saw a little wear on the pins. So I didnt get to fire my new .21 plus today. No hurry been raining for days, are big club race of the year,rained out both days. I will get back with some info when I can. Theirs more info on this engine in the Ofna site, they just put it up a day ago. And their are internal changes. Look under Press Release in the Ofna site.
picco is Notorious for changing timing #'s without informing any one of the changes.....so it wouldn't surprise me too much to find out they once again went and tweeked the #'s....but there again i would never run one stock as max would already have his sticky finger's on it before it ever saw fuel.
09-03-2009, 06:29 AM
#13
09-03-2009, 09:18 AM
#14
Integra, I never ran a stock Jammin .21 before. I know their fuel mileage sucks ! I will run this engine the rest of the year, Only about five races left around my area. I will see if the timing changes help on mileage.And I will have to try my next Jammin .21 done up by Maximo.
09-03-2009, 02:26 PM
#15
Integra, I never ran a stock Jammin .21 before. I know their fuel mileage sucks ! I will run this engine the rest of the year, Only about five races left around my area. I will see if the timing changes help on mileage.And I will have to try my next Jammin .21 done up by Maximo.
you wont be disappointed with a clocked JPX....I can guarantee that.
Last edited by Integra; 03-08-2010 at 03:36 PM.