JP engines
#331
Re: weard?
Originally posted by Brett.w
Ok have i been racing today and it has been very hot, i have run my JP and i only seem to get 4 mins, i was going to lean it a bit to get more milage but its runnning hot and i dont want to lean it anymore. I have checked the plug and the bottom is brown to going black and the coils is bright silver but it looks "burnt" were it touches the edge (bottom) of the plug.
Any ideas about what to do would be great!
i have tried another engine and it does the same thing.
Ok have i been racing today and it has been very hot, i have run my JP and i only seem to get 4 mins, i was going to lean it a bit to get more milage but its runnning hot and i dont want to lean it anymore. I have checked the plug and the bottom is brown to going black and the coils is bright silver but it looks "burnt" were it touches the edge (bottom) of the plug.
Any ideas about what to do would be great!
i have tried another engine and it does the same thing.
As for the overheating part, I'd like to know what type of track did you run the engine? Technical or high speed? What plug number did you run? High speed would prefer colder plug like 7TF. Shorter technical tracks you could live with a no. 6. Wrong plug would make the engine overheat and make for higher fuel consumption. But my guess is you're using a hot plug on a hot day which would make fuel consumption high as well as overheating the engine.
Was the car overgeared? Did the engine rev at the top end a lot or were you at 0 to 50% of the throttle most of the time? How was the idle? Rich and difficult to start in the beginning or the idle coming in high after a few rounds?
If the engine revved a lot at top end RPM, then your HSN needle would have been too lean which made the car overheat this time and not the last time previous. If the engine was at mostly 0 to 50% throttle on the track, then your low end would have been too lean to overheat your engine. My 2 cents...
#332
Re: JP Comparison
Originally posted by opposite lock
I just got a brand new JP NOVAROSSI 12 S3 MODIFIED and was wondering how they compare to the new JP's?
Are piston & liners etc still available for the older models?
Thanks all.
I just got a brand new JP NOVAROSSI 12 S3 MODIFIED and was wondering how they compare to the new JP's?
Are piston & liners etc still available for the older models?
Thanks all.
#333
JP Comparison
No I mean the purple head versions
#334
Hi
The RS or the NS version?
If NS JP it should have RACE and NS3
If RS JP it should have RACE and S3 writen on the purple head
The RS or the NS version?
If NS JP it should have RACE and NS3
If RS JP it should have RACE and S3 writen on the purple head
#335
JP Comparison
It just has RACE S3 on the head
#336
That is the RS JP
#337
does it have the JPracing name etched on the head aswell?
#338
JP Comparison
I realise this but I am after a comparison with the new JP's.
The internals of mine look mighty fine.
I will completely pull it down and clean it to remove any metal shavings etc and reassemble ready for run in
The internals of mine look mighty fine.
I will completely pull it down and clean it to remove any metal shavings etc and reassemble ready for run in
#339
Yes i know you are after a comparison but first we need to know what version it is.
It depends on what size track you race on
On a larger track you wont be able to have the same top end speed as with the NS, X12 and FX series JPs.
It depends on what size track you race on
On a larger track you wont be able to have the same top end speed as with the NS, X12 and FX series JPs.
#340
JP Comparison
So does the S3 have more torque or just not rev as high?
What is durabilty like ?
What is durabilty like ?
#341
It has less revs than the newer versions.
Don’t get me wrong the smaller-medium track I race on they are just as quick cause the straight is not long enough for the newer JP versions to reach there optimum speed.
Durability is great will last a long time if you take the run in stage carefully and don’t rush it.
Don’t get me wrong the smaller-medium track I race on they are just as quick cause the straight is not long enough for the newer JP versions to reach there optimum speed.
Durability is great will last a long time if you take the run in stage carefully and don’t rush it.
#342
Re: JP Comparison
Originally posted by opposite lock
So does the S3 have more torque or just not rev as high?
What is durabilty like ?
So does the S3 have more torque or just not rev as high?
What is durabilty like ?
#343
All JP engines, past and current, begin life at the Novarossi factory.
#344
Tech Apprentice
if any one is interested in jpfx motors try pdl racing thats where i got my fx21r-01 at $800 bucks thats with break in and dyno
#345
Ceramic Bearing
Does anyone know where i can order the ceramic bearing that came with the JP FX? [.12]...Not BOCA please, they don't fit well onto the crankshaft.
Thanx.
Thanx.