Nitro engine timing profiles.

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Old 04-25-2018, 09:07 AM
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Default Nitro engine timing profiles.

Is there a site/database that lists the common/popular nitro enginesí port timing profiles? I have an engine that Iíd like to find out if itís factory box stock or if itís been modified.
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Old 04-27-2018, 04:48 AM
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Engine timing must still be a massively voodoo-esque subject. Oh well.
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Old 04-27-2018, 07:22 AM
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Not really, engine timing goes beyond 99% of the users on this forum. It is a kind of voodoo, acacadabra or what ever they name it.

On my site: Roelof's hoompeets click on "motoren timings" A page with on the bottom my list and on top in the text a link to so far I know the only other site on the web.
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Old 04-27-2018, 07:47 AM
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The P5XLT isn’t listed there or on the First Racing site. I’m just trying to find out what the stock timings are for the pre-2016 P5XLT Turbo plug engine is.
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Old 04-27-2018, 09:26 AM
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If no one did list it on the web it will be hard to find them than only find someone who has one and ask if you may meassure it (I did several times). On the other hand if you look at most Novarossi models you can see they all fall in a same window of timings, when modified you will see huge differences from avarage.
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Old 04-27-2018, 10:06 AM
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I got 64 for transfers, 87.5 exhaust and I believe 34/62 for the crank inlet. The crank bore is 9.5mm at the crankweb and 9.2mm at the inlet port. It struck me as a bit hotter than I’d expect from a buggy/truggy engine that needs to get good fuel mileage. IIRC this engine is timed a little “hotter” than the Legend 28-8 was stock. Maybe my idea of “hotter” is more
normal than I originally thought.
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Old 04-27-2018, 10:29 AM
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Sounds like normal timings.
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Old 04-27-2018, 10:41 AM
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Sounds reasonable. Thanks.
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Old 04-28-2018, 05:32 AM
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You can cross reference parts on Novarossi's web page, most P5 uses the same sleeve, just two different pistons.
Though they might have done some minor running change and positioned it slightly differently in the case, it's most likely pretty much the same.
Houston probably have all the specific details, if he likes to share.
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Old 04-28-2018, 09:52 AM
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Originally Posted by NitroVein View Post
You can cross reference parts on Novarossi's web page, most P5 uses the same sleeve, just two different pistons.
Though they might have done some minor running change and positioned it slightly differently in the case, it's most likely pretty much the same.
Houston probably have all the specific details, if he likes to share.
Yeah, I’m slowly gathering a fairly good idea of how Nova “does things”. Unfortunately, it’s hard to get simple answers to simple questions. Because of that, this thread came to be. I would hope my questions don’t/didn’t come across as threatening or malicious. Since there wasn’t a response for some time, I figured that’s just how some folks operate.





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Old 04-28-2018, 11:19 AM
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Originally Posted by SlowLST2 View Post

Yeah, I’m slowly gathering a fairly good idea of how Nova “does things”. Unfortunately, it’s hard to get simple answers to simple questions. Because of that, this thread came to be. I would hope my questions don’t/didn’t come across as threatening or malicious. Since there wasn’t a response for some time, I figured that’s just how some folks operate.

Most brands have a couple of different sets with the different engine parts, and then they mix it up every now and then to release something "new" or increase their portfolio. Lets just say the wheel is already invented.

I went through my notes here, and found numbers around 122 total for transfers, 168 total for exhaust. But I'm not sure where I got these numbers, and I do know that there can be small differences between batches. I hope that helps.

No hurt feelings here, for whatever reason.

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Old 04-28-2018, 01:04 PM
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My very last comment was in regard to a PM I had sent - not about this thread.
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Old 04-28-2018, 02:31 PM
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Originally Posted by SlowLST2 View Post
My very last comment was in regard to a PM I had sent - not about this thread.
No worries!
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