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Old 10-28-2005, 01:22 PM   #16
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V12 is faster than JP FX3.

However, latest JP FX5 engine maybe is equivalent to V12 Latest FX5 and FX3 engines have new design for piston head, ignition chamber, and heatsink.

Btw, I can't meet 5 min refueling with JP FX5. FX3 is okay, infact my friend even use EFRA pipes for more fuel economy.
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Old 10-28-2005, 01:39 PM   #17
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Well i just put a fx12 3 port and compared to my modded evo 3 the fx is by far faster and wayy more top end and barly running at 200
and i am waiting to get the 21 ro3 for my 8th scale soon
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Old 10-28-2005, 02:00 PM   #18
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yes jo i was refering to the mod motors..a v12 5 port will outrun a jp mod 3port sure..but we are comparing 3 port to 3 port correct?..i have almost 4 gallons through my fxt-03 and the red silicon is fine and intact,same to be said for my .21 fxr-03 i have NEVER had an issue with mugen's customer service,although i havent ever tried to have anything covered under warenty either..which is most of the reason i buy thier product.as far as rb rody motors go..hell yeah they rip but all in all jp mod vs rody mod in the end its gonna come down to IF you can drive the car!!
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Old 10-28-2005, 02:22 PM   #19
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Quote:
Originally Posted by TrickPonYracing
quaility of workmanship is poor clay fell out in less than 25 mins run time.. 20 of on run in bench.. quaity of repair extra poor it was sent back to jp for repair they did not change the bearings or piston and sleave after there poor workmanship [red clay/silicone] fell out of the crank.. metalurgy poor and no i did not do a rockwell hardness test.. why should i have to after spending all that money on a motor that has failed hence the pile of scrap metal that left. i will take some timer after this weekends racing to post some picts
Well, the only one thing I found in your post about that motor-red clay fell off, the rest was again about service, which is not a topic. I saw that clay fell off on MAX too. Then you sad metalurgy is poor-how do we have to understand that stament? Which part is poor?
I am not sure if you know what I was asking you, when I ask give some tech info to proove that JP is crap.
We did test a lot of parameters on banch of motors-crancase pressure, expantion rates vs tapers, back pressure to carb from crancse by 5% increaments of opening, unleaniarity of crankshaft under pressure of combustion process etc. We found nothing is wrong with a lot of motors. I wouldn't agree with some ports lay outs (everybody has their own opinion on tech data), balancing is another thing I am not agree with.
So because you can't proove that JP is crap, you didn't post any valuble info beside clay fell out, I wouldn't take your statment seriosly and I will not recomend to anybody do that.
Sorry man, but if you make claims like that you need to stay behind it, not just empty words.
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Old 10-28-2005, 02:32 PM   #20
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Quote:
Originally Posted by ntro75
yes jo i was refering to the mod motors..a v12 5 port will outrun a jp mod 3port sure..but we are comparing 3 port to 3 port correct?..i have almost 4 gallons through my fxt-03 and the red silicon is fine and intact,same to be said for my .21 fxr-03 i have NEVER had an issue with mugen's customer service,although i havent ever tried to have anything covered under warenty either..which is most of the reason i buy thier product.as far as rb rody motors go..hell yeah they rip but all in all jp mod vs rody mod in the end its gonna come down to IF you can drive the car!!
thanks man... and yes i can drive the car because i am the champion of the champions!!!! just kidding

but yeah 3 ports is all we are comparing about. 5 ports is cool but they are illegal so what's the point.. unless, of course the outlaw class, but i'm into the "legal" class.

what about reliability and sensitiveness of the carburetor?? which one is easier to tune?? the next question would be the fuel mileage, which is very critical. i don't want to go to pit in a 5 minute qualifying!
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Old 10-28-2005, 02:37 PM   #21
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If you're getting the JP, make sure that you have the newest batch. Incredible power. You can't recognize it from the outside though because it has new piston design. Just ask your LHS and see if they're telling you the truth
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Old 10-28-2005, 02:42 PM   #22
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Oh another thing to add, for me the V12 is the fastest on the straight but always had fuel mileage while JP always give me the fastest lap time, and that's with the older JP. Last couple races, I must say my new JP outperform all of my competitor...
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Old 10-28-2005, 02:46 PM   #23
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you're right because when the fx series first came out, i heard that they were having a problem with the "clay". i read someone posted that the clay fell off on his but all he did was take if off completely and the motor ran just fine!

so it has to be the latest jpfx12t03
or
the rody v12 ....25 <----- i guess the "...25" is the latest (part#)

you know what's killing me also is the new profi 12 palmaris motor. the dyno number on it was killer! the jp came in second but it was a different jp with a palmaris bimetal inner. it came in a close thin hair difference of 0.02 horsepower! the rody wasn't dynoed unfotunately.

here's a copy of the results from xdyne dyno system:
Palmaris Profi 12 BM 1.00hp @ 35,500rpm 31.33oz-in @ 32,500rpm
JP 12 FX T03 BM 0.98hp @ 33,700rpm 31.54oz-in @ 32,000rpm
JP 12 FX T03 BRB 0.90hp @ 33,500rpm 28.77oz-in @ 32,500rpm
REX 12 RER3 BM 0.89hp @ 35,450rpm 34.16oz-in @ 25,500rpm
JP 12 FX T03 0.88hp @ 36,950rpm 27.66oz-in @ 25,000rpm
TOP 12 TSR3 0.80hp @ 30,400rpm 30.21oz-in @ 21,500rpm
STS 12 D3R IFMAR 0.78hp @ 35,650rpm 26.34oz-in @ 24,500rpm
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Old 10-28-2005, 02:52 PM   #24
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Quote:
Originally Posted by Jo Gutierrez
thanks man... and yes i can drive the car because i am the champion of the champions!!!! just kidding

but yeah 3 ports is all we are comparing about. 5 ports is cool but they are illegal so what's the point.. unless, of course the outlaw class, but i'm into the "legal" class.

what about reliability and sensitiveness of the carburetor?? which one is easier to tune?? the next question would be the fuel mileage, which is very critical. i don't want to go to pit in a 5 minute qualifying!
If you are looking for a motor to race(and I use that word losely)at SRS,you are wasting your money on any modified engine. I know the JP's really struggle to make miledge and the Rody's are not quite as aggressively timed and seem to be just as fast. That it why I have switched to the O.S. motors, I just finally got tired of always having to take pitstops in qualifying.
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Old 10-28-2005, 02:53 PM   #25
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Quote:
Originally Posted by Jo Gutierrez
you're right because when the fx series first came out, i heard that they were having a problem with the "clay". i read someone posted that the clay fell off on his but all he did was take if off completely and the motor ran just fine!

so it has to be the latest jpfx12t03
or
the rody v12 ....25 <----- i guess the "...25" is the latest (part#)

you know what's killing me also is the new profi 12 palmaris motor. the dyno number on it was killer! the jp came in second but it was a different jp with a palmaris bimetal inner. it came in a close thin hair difference of 0.02 horsepower! the rody wasn't dynoed unfotunately.

here's a copy of the results from xdyne dyno system:
Palmaris Profi 12 BM 1.00hp @ 35,500rpm 31.33oz-in @ 32,500rpm
JP 12 FX T03 BM 0.98hp @ 33,700rpm 31.54oz-in @ 32,000rpm
JP 12 FX T03 BRB 0.90hp @ 33,500rpm 28.77oz-in @ 32,500rpm
REX 12 RER3 BM 0.89hp @ 35,450rpm 34.16oz-in @ 25,500rpm
JP 12 FX T03 0.88hp @ 36,950rpm 27.66oz-in @ 25,000rpm
TOP 12 TSR3 0.80hp @ 30,400rpm 30.21oz-in @ 21,500rpm
STS 12 D3R IFMAR 0.78hp @ 35,650rpm 26.34oz-in @ 24,500rpm

This is why we don't race dyno's. I thought I was done listening to dyno races when I sold all of me electric crap.
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Old 10-28-2005, 02:56 PM   #26
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Quote:
Originally Posted by YBSLOW
If you are looking for a motor to race(and I use that word losely)at SRS,you are wasting your money on any modified engine. I know the JP's really struggle to make miledge and the Rody's are not quite as aggressively timed and seem to be just as fast. That it why I have switched to the O.S. motors, I just finally got tired of always having to take pitstops in qualifying.
hey brad,

no, this will not be for SRS racing... it will be for out of town races for next year. i sold my offroad stuff and my bro did as well. we are planning on just concentrating in onroad and be able to go race out of town more next year.

congratulations by the way on your strong showing in vegas!
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Old 10-28-2005, 02:57 PM   #27
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Default Fastest motor

The two fastest .12 motors I've seen have both been modded Mugen X-12's One by Mrunan and the other by Ritchey which neither were dynoed. I can tell you the one I have is a missile and will run for about 4 1/2 minutes on a tank of 20% fuel.
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Old 10-28-2005, 03:00 PM   #28
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Quote:
Originally Posted by Jo Gutierrez
hey brad,

no, this will not be for SRS racing... it will be for out of town races for next year. i sold my offroad stuff and my bro did as well. we are planning on just concentrating in onroad and be able to go race out of town more next year.

congratulations by the way on your strong showing in vegas!

Cool, I hope you guys make a bunch of races next year. Believe me when I tell you look at the O.S. TZR motors. Under 200 bucks parts are super cheap and they make great torque. That is what I ran in Vegas. The only Qualifier I ran out of gas I was running the X-12, had to try it at least once.
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Old 10-29-2005, 01:37 AM   #29
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I'm running the RB V12 Rody 3 port standard plug. It doesn't rev as high as the ROAR and EFRA version, but it's not as finicky and still gives good power and reliability. I also didn't ruin as many bearings and shims as my friend's Rody...which he happened to get for a cheaper price since the box was mislabled. Got it for $230, but it was quite a pisser to run. I too am interested in that JP .12 for $309.
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Old 10-29-2005, 09:09 AM   #30
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rody has great bottom and mid but gota choose right gears for long stret and clucth setting too,FX mid and top end is marvelous..
but stil go back to roll out ratio and cluct settin..and hands too
not to foget,PIPE plays d rule too
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