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2017 OS Speed R2103 3.5cc Nitro On Road Engine

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2017 OS Speed R2103 3.5cc Nitro On Road Engine

Old 08-19-2017, 01:05 AM
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Problem is when you feel the difference of 2 different stroke motors there are always more differences between the motors so no way to tell if it is the stroke.
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Old 08-19-2017, 01:11 AM
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Originally Posted by Roelof View Post
Problem is when you feel the difference of 2 different stroke motors there are always more differences between the motors so no way to tell if it is the stroke.
do they change the inside of the engine block also, like the exhaust hole on the block? or the workings in side the engine block ? another words if I took the p/s from the 03 and put it into a 02 block or even an 01 is it the same?
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Old 08-19-2017, 02:11 AM
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For a longer stroke only the groove for the conrod needs to be enlarged. But between 2 different engens there are always timing differences. Just one degree more or less cranktiming can be feeled easilly.
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Old 08-28-2017, 12:23 AM
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Originally Posted by VS_Rody View Post
We tried many times 9-ports in several configurations but no real advantage over the 7-port.

hey rody if I may ask u was scott kimbrow running one of your motors this past weekend at the glc? and if so which one?

also have u modified the new os v.3 yet? and if so what do u think about it ?
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Old 10-07-2017, 10:24 PM
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VS_Rody or any one else Can anyone tell me which hipex tuned pipe would be similar to the OS Speed T-2080SC tuned pipe, the pipe is for my R2103. Thanks in advance.
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Old 10-07-2017, 10:35 PM
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Originally Posted by HSV427 View Post
Can anyone tell me which hipex tuned pipe would be similar to the OS Speed T-2080SC tuned pipe, the pipe is for my R2103. Thanks in advance.
if u want my opinion I ran the exact hipex collari ran on his os and I had better lap times with the nova 2015 and the nova was faster then the os pipe, but to answer your ? it would b the hipex evo 3
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Old 10-07-2017, 10:47 PM
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Originally Posted by ralphierace13 View Post
if u want my opinion I ran the exact hipex collari ran on his os and I had better lap times with the nova 2015 and the nova was faster then the os pipe, but to answer your ? it would b the hipex evo 3
Thank you and what manifold for the nova and hipex pipes
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Old 10-08-2017, 04:55 AM
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Originally Posted by HSV427 View Post
Thank you and what manifold for the nova and hipex pipes

sorry I don't recall the model numbers of the manifolds which ever manifold each of there sites recommended to use and if u mean in terms as far as what lenth long med or short well that depends on the track size
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Old 10-08-2017, 01:01 PM
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Originally Posted by ralphierace13 View Post
hey rody if I may ask u was scott kimbrow running one of your motors this past weekend at the glc? and if so which one?

also have u modified the new os v.3 yet? and if so what do u think about it ?
Yes Scott has been running the VSR02 engines at the GLC but it seems the high traction track was giving them some issue's to be really performing. I think the level of racing was quite high at that event.

As for the OS R2103 yes I have made some modifications on this engine(still have some available on my website) and tried some kind of same configuration on some of our engines for testing too. More torque is available especially in the first part of the rpm area.
Hope to release the newer version soon.
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Old 10-08-2017, 01:04 PM
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Originally Posted by HSV427 View Post
VS_Rody or any one else Can anyone tell me which hipex tuned pipe would be similar to the OS Speed T-2080SC tuned pipe, the pipe is for my R2103. Thanks in advance.
For me the Hipex 2115 is very similar to the 2080-SC, the Hipex is less noisy, for me the performance, very similar.
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Old 02-11-2018, 01:51 AM
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HIPEX 21 2069 STRADA HD vs HIPEX 21 2115 STRADA HD
pros and cons used on a 2103?
Will run mostly on a medium sized track.
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Old 02-11-2018, 01:18 PM
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Originally Posted by Houmb View Post
HIPEX 21 2069 STRADA HD vs HIPEX 21 2115 STRADA HD
pros and cons used on a 2103?
Will run mostly on a medium sized track.
Hi,

The 2069 is more smooth compared to 2115 which comes in more brutal but also has more power.
If you have a lot of grip then use the 2115 if traction is not so high then go for the 2069

Hope this has helped you further.
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Old 02-11-2018, 01:34 PM
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Originally Posted by VS_Rody View Post
Hi,

The 2069 is more smooth compared to 2115 which comes in more brutal but also has more power.
If you have a lot of grip then use the 2115 if traction is not so high then go for the 2069

Hope this has helped you further.
2069 it is then, traction is not so high grip. Thank you!
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Old 02-11-2018, 02:01 PM
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Originally Posted by Houmb View Post
2069 it is then, traction is not so high grip. Thank you!
You are welcome...:-)
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Old 02-19-2018, 12:57 PM
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Was wondering what the factory Carb settings are for the VS R02?
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