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REDS Engines (Mario Rossi)

Old 10-27-2022, 03:35 PM
  #2596  
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I picked up a red r5r v1.1 and the manual says up to 25% nitro. If I wanted to run 30% I would have to add a shim?
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Old 12-20-2022, 10:27 AM
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Originally Posted by wely324 View Post
I picked up a red r5r v1.1 and the manual says up to 25% nitro. If I wanted to run 30% I would have to add a shim?
I would say run it, if it gives you any issues add a shim.
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Old 12-20-2022, 10:29 AM
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Pretty......

721 S SCUDERIA GEN3 PRO SUPERVELOCE SV



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Old 12-20-2022, 10:34 AM
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Originally Posted by RsA89 View Post
I bought an oring kit for the 521 sport. I could not get the orings onto the needles. Anybody else have a hard time or have some tips.
A touch of o rings lube helps and makes them seal better. It will make the o ring swell a bit as well.
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Old 12-20-2022, 10:35 AM
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Double post.
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Old 12-29-2022, 07:30 PM
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So reading about the 521 sport and people saying reds are
hard to tune should I not get it? Should I get a os based engine? New to nitro
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Old 12-30-2022, 06:19 AM
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Originally Posted by splitoris View Post
So reading about the 521 sport and people saying reds are
hard to tune should I not get it? Should I get a os based engine? New to nitro
If you are new to nitro any motor will have a learning curve. I switched from OS to Reds last year and I am happy so far. The 521 will be less of an investment if you find out you don't like nitro.


Check out this video if you haven't yet, its long but lots of info. --------->Nitro engine tuning.
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Old 01-04-2023, 01:08 PM
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https://www.liverc.com/news/new-reds...kplate-teaser/

Anyone have an idea what this is supposed to do, beyond adding complexity and another potential air leak source?
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Old 01-04-2023, 01:25 PM
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Originally Posted by captain america View Post
https://www.liverc.com/news/new-reds...kplate-teaser/

Anyone have an idea what this is supposed to do, beyond adding complexity and another potential air leak source?
Reduce drag between the back plate and the crank I would imagine. I am curious to see how well it works.
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Old 01-04-2023, 04:41 PM
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Originally Posted by captain america View Post
https://www.liverc.com/news/new-reds...kplate-teaser/

Anyone have an idea what this is supposed to do, beyond adding complexity and another potential air leak source?

I can see it now.. Hey can you help me tune my engine??? it doesn't seem to run right... its a little lean well everywhere.. lol
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Old 01-04-2023, 05:49 PM
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Originally Posted by Pharcyed View Post
Reduce drag between the back plate and the crank I would imagine. I am curious to see how well it works.
Same. There would have to be a noticeble improvement to justify the extra complexity, weight and cost. The cranks are already DLC coated and the friction with the back plate is likely marginal since everything bathes in lubricated fuel anyway. Part of me thinks this is the 2023 equivalent to fuel tube heat sinks.
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Old 01-08-2023, 11:59 PM
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Hello, i think about a new engine and i like the look of the new Reds 721
Is it correct that reds tuned in a different way than OS?

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Old 01-09-2023, 12:11 AM
  #2608  
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Originally Posted by captain america View Post
Same. There would have to be a noticeble improvement to justify the extra complexity, weight and cost. The cranks are already DLC coated and the friction with the back plate is likely marginal since everything bathes in lubricated fuel anyway. Part of me thinks this is the 2023 equivalent to fuel tube heat sinks.
Do not forget the added rotating mass
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Old 01-10-2023, 07:28 PM
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How many quarts of bones brew break in fuel should I order for a pre broke in 521? 1 or 2?
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Old 01-11-2023, 03:21 AM
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Originally Posted by splitoris View Post
How many quarts of bones brew break in fuel should I order for a pre broke in 521? 1 or 2?
You should only need one.
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