invrtd

iTrader: (29)

Smoother acceleration and better fuel mileage is a win for me. I will have to try it out next time I am at the track. Thanks for the input.

wichitafc98

iTrader: (47)

Rody can you explain when to use the OS RP6,7,8 plugs. What temps. I want to run 25%

VS_Rody

In theory you use the RP6 in a range of 10-20°C, the RP7 in a range of 15-35°C and the RP8 from 35°C and over.
But in general we always use the RP7.

Temps, don't go over 110°C, you always want to see some smoke and the power of the engine should never fade away.

Mad Max

I am getting back to 1/10 Touring and my Xray is in need of a new motor. What choices are there? Whats the difference between the Std 1204 and your modifications. You offer a combo.

VS_Rody

The stock version and combo of the latest T1204 are already very good and reliable.
The tuned version generates a little more power overall.
You can find all these engines and combos here https://www.worldchampionproducts.co...3-touring-1-10

Mad Max

Thank you for the answer, however I have additional questions. In the past I have run Novarossi and RB motors with good success. Typically I tune via Temp after run, smoke out pipe albeit as little as possible. Temp about 275 to 290 F Usually don't have more than a ten minute races. Don't burn up plugs but I've been known to foul up the tuning with the idle and low speed needle. Used to drive pretty smooth but I've gotten 10 years older and who knows since all my RC was burned up. Can you expand upon the OS vs a modded motor based on what I am capable of or what I should do. It seems that there is not much difference then, so a modded motor would be the way to go.

VS_Rody

For me it looks like you have some experience, so I think you know that a good tuned stock motor performs better then an average tuned modified motor. For me it seems that you are ok with the temps and way of tuning, so I suggest you stick with what you remember. Today the overall quality of the engines have improved, so you should not encounter too much difficulties.

Joaosilvab

Hi , hope everyone is doing well through these difficult times...
i have a question for Rody regarding os r21gt exhaust system. Do you find that hipex 2115 pipe + manifold s48 is best in terms of performance compaired to the stock 2060sc+70mm manifold? Have you tested other hipex GT manifolds with 2115 pipe (like the conical or the gtp2 square type)?
​​​​​​Do you recomend os p4 plug over the rp7?

​thank you

VS_Rody

​​​​​​
Hello,
I propose the Hipex pipe and manifold just as a cheaper alternative. The performance compared to the original OS is about the same, if not better.
Using other manifolds will alter the behavior of the engine but this you have to try yourself because depends a lot on the track conditions.
I suggest the P4 plugs over the P7 for GT because the cars are more heavy and you need the low end power to be efficient.

Hope this has helped you further.

Sincerely, Rody

Joaosilvab

Thank you for your quick answer Rody and for the advices!

RCRjuanabbe

how are these OS engines compared to Nova based Rody tuned engines?

Roelof

I loved my C5 engine's and today for many racers they could still provide enough performance but today's engines are generations ahead and are better in the hands of toplevel racers.

RCRjuanabbe

I am with you, love my C5's and V12 3 and 5 ports rody's but they are getting old.time for a new mill. i thought I saw these engines at AMAINN website, will check it out

BigC2007

iTrader: (9)

Rody is this a good pipe set to run on a OS R2104 ? >>>>

VS Racing EFRA 2098 Tuned Pipe Combo w/MR02 On-Road Manifold.

Roelof

As most OS engines are set to 25% with an 0.1 and 0.15mm headhim and is advised to remove 0.1mm for the use of 16% I wonder if with the new EU law 16% fuel, that is actually 12.5%, you can remove the 0.15 shim and leave the 0.1mm