OS TR engine thread
10-26-2004 | 02:43 AM
#406
Originally posted by rcosmax
glad to here you like your os! Mine has been a rock solid performer for me. At the end of sundays race my os tr started to get tired out temps were still fine but it is just tired and compression has dropped and blowby can be heard. In no way is this a complaint as i have run this engine hard for around 20 liters. I am rebuilding it this week. Initial tear down showed that the bearings are in good shape and only p/s needs to be redone. I am very happy with how this motor has performed against the italian mills and for the price is definately a great choice.
ffr how much did your tq mod cost?
thanks.
glad to here you like your os! Mine has been a rock solid performer for me. At the end of sundays race my os tr started to get tired out temps were still fine but it is just tired and compression has dropped and blowby can be heard. In no way is this a complaint as i have run this engine hard for around 20 liters. I am rebuilding it this week. Initial tear down showed that the bearings are in good shape and only p/s needs to be redone. I am very happy with how this motor has performed against the italian mills and for the price is definately a great choice.
ffr how much did your tq mod cost?
thanks.
and may i ask what temps are you running?
10-26-2004 | 05:07 PM
#407
Tech Adept
Joined: May 2004
Posts: 221
From: Japan
Yeah i changed the conrod 2 times (8 bucks for a conrod and they are almost disposable). My temps where ranging from 110-125 depending on track and conditions. It started to warp speed at the higher temps and never sounded lean but it makes me a bit nervous to get to close to the lean overheat. I always have this battle in my head of: man the engine sounds good and is very fast but maybe it is too lean and i back it off a bit. The plugs always looked good though. I guess i should just get rid of my temp gun and trust plug reading and sound tuning.
10-26-2004 | 08:54 PM
#409
Tech Adept
Joined: May 2004
Posts: 221
From: Japan
I had used the kyosho 2 piece pipe that came with my fw-05. I dont have that car anymore so i can messure the stinger. but i think it was 5.2? After i had it ported and tuned i was using a zac flanged pipe that was 7.0mm. The best performance was the kyosho, but they are so fragile!
11-01-2004 | 06:31 AM
#413
Joined: Dec 2003
Posts: 3,840
From: Cebu City, Philippines and Ocala, Florida, USA
Originally posted by FirstLoser
Where can i find a crankshaft collet to fit my new OS 12TR R-Spec engine.......?
Where can i find a crankshaft collet to fit my new OS 12TR R-Spec engine.......?
11-10-2004 | 10:45 AM
#415
Re: 12TR R-Spec engine discontinued
Originally posted by i300i
Does anyone know the story on this engine being discontinued by O.S.?
My friend put one in his NTC3 this summer and it's a stellar performer. I was planning on buying one.
Does anyone know the story on this engine being discontinued by O.S.?
My friend put one in his NTC3 this summer and it's a stellar performer. I was planning on buying one.
http://www2.towerhobbies.com/cgi-bin...&I=LXGPF1&P=ML
11-10-2004 | 07:13 PM
#416
Re: Re: 12TR R-Spec engine discontinued
Originally posted by Marcos.J
as of today it is showing discontinued in tower hobbies
http://www2.towerhobbies.com/cgi-bin...&I=LXGPF1&P=ML
as of today it is showing discontinued in tower hobbies
http://www2.towerhobbies.com/cgi-bin...&I=LXGPF1&P=ML
11-20-2004 | 09:46 PM
#419
...or maybe they just want to repackage the motor and raise the price!
It's a shame really because the motor is decent. I'd equate it to a MT-12 but more bottom end! So long as I run the motor above 240deg. it has good power. I ran it a whole day at 250 deg. 80 minutes of racing. C, B and A main. The temp was consistent and no sign of detonation. It isn't quite a Novarossi killer on those bigger tracks, but it sure is an awesome small track motor. Granted my motor has been worked on, I wouldn't hesitate to run it stock so long as the track isn't too big. I lost some gas milage with the modification but it's still awesome compared to the Novarossis. I got 7minutes with it stock and now I get 5:50 with the mods.
I also noticed something very weird. The compression got better after 2 gallons. I've never had this happen to me before. I am absolutely sure the compression increased since the last time I ran it. I'm not exactly sure why but it's very interesting. Anyone have insight as to why?
I also reccomend the new VR 12 pipe from Skyline Racing. I just got the pipe and it really exploits all the power from this motor. I was running a RD pipe, a Yokomo pipe and a Rex pipe on this motor and so far the Skyline pipe has been the best.
It's a shame really because the motor is decent. I'd equate it to a MT-12 but more bottom end! So long as I run the motor above 240deg. it has good power. I ran it a whole day at 250 deg. 80 minutes of racing. C, B and A main. The temp was consistent and no sign of detonation. It isn't quite a Novarossi killer on those bigger tracks, but it sure is an awesome small track motor. Granted my motor has been worked on, I wouldn't hesitate to run it stock so long as the track isn't too big. I lost some gas milage with the modification but it's still awesome compared to the Novarossis. I got 7minutes with it stock and now I get 5:50 with the mods.
I also noticed something very weird. The compression got better after 2 gallons. I've never had this happen to me before. I am absolutely sure the compression increased since the last time I ran it. I'm not exactly sure why but it's very interesting. Anyone have insight as to why?
I also reccomend the new VR 12 pipe from Skyline Racing. I just got the pipe and it really exploits all the power from this motor. I was running a RD pipe, a Yokomo pipe and a Rex pipe on this motor and so far the Skyline pipe has been the best.
11-21-2004 | 01:16 AM
#420
Originally posted by Racing4Evo
...or maybe they just want to repackage the motor and raise the price!
It's a shame really because the motor is decent. I'd equate it to a MT-12 but more bottom end! So long as I run the motor above 240deg. it has good power. I ran it a whole day at 250 deg. 80 minutes of racing. C, B and A main. The temp was consistent and no sign of detonation. It isn't quite a Novarossi killer on those bigger tracks, but it sure is an awesome small track motor. Granted my motor has been worked on, I wouldn't hesitate to run it stock so long as the track isn't too big. I lost some gas milage with the modification but it's still awesome compared to the Novarossis. I got 7minutes with it stock and now I get 5:50 with the mods.
I also noticed something very weird. The compression got better after 2 gallons. I've never had this happen to me before. I am absolutely sure the compression increased since the last time I ran it. I'm not exactly sure why but it's very interesting. Anyone have insight as to why?
I also reccomend the new VR 12 pipe from Skyline Racing. I just got the pipe and it really exploits all the power from this motor. I was running a RD pipe, a Yokomo pipe and a Rex pipe on this motor and so far the Skyline pipe has been the best.
...or maybe they just want to repackage the motor and raise the price!
It's a shame really because the motor is decent. I'd equate it to a MT-12 but more bottom end! So long as I run the motor above 240deg. it has good power. I ran it a whole day at 250 deg. 80 minutes of racing. C, B and A main. The temp was consistent and no sign of detonation. It isn't quite a Novarossi killer on those bigger tracks, but it sure is an awesome small track motor. Granted my motor has been worked on, I wouldn't hesitate to run it stock so long as the track isn't too big. I lost some gas milage with the modification but it's still awesome compared to the Novarossis. I got 7minutes with it stock and now I get 5:50 with the mods.
I also noticed something very weird. The compression got better after 2 gallons. I've never had this happen to me before. I am absolutely sure the compression increased since the last time I ran it. I'm not exactly sure why but it's very interesting. Anyone have insight as to why?
I also reccomend the new VR 12 pipe from Skyline Racing. I just got the pipe and it really exploits all the power from this motor. I was running a RD pipe, a Yokomo pipe and a Rex pipe on this motor and so far the Skyline pipe has been the best.