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Best way to run/start your engine

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robriguez

robriguez

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Question..... after hangin out at the LHS tonight after work a long argumant broke out (as usually happens :D ) about the best way to run an engine. Once the owner of the shop started putting his .02 into the mix we divided into two groups.

Group 1:
Once you have found the sweet spot you should be able to leave the needles there no matter what and have it start in the first 3-4 pulls (or 1-2 sec on the starter box) no matter what and run like hell without overheating.

Group 2:
Once you have found the sweet spot you should always start the engine at factory specs "then" move your needles to where you know the sweet spot is and run like hell without overheating.

I was in group 1....what do you guys think about these opinions?
 
I would be in group 1. Once I have my engine running the way I like it why change it? The only reason you should have to go back to factory settings and tune from there is if you are having problems with the engine. Just my opinion. :)
 
i would go with group 1 but it really depends on the day.i leave my settings the same when i find the sweet spot but when it gets hummid outside its not sweet anymore.but when we get dry air look out..
 
hehe, I'd been in group 1 but I haven't found the sweet spot on my SNR yet I don't think.
 
how do u know u've found the sweet spot :confused: ah so much to learn... anyway, i would be grooup 1 since i'm not good at tuning it yet so i'd stay away from fiddling with it if i didn't have to
 
As far as "I'm" concerned (and some people may or may not disagree with me) The sweet spot is where the engine runs as good as it can possibly run without overheating.
 
The only time I ever go back to factory settings, is if my engine is running like crap, and I need a base line setting. Otherwise I leave the needles where they were from the last time out and go from there.
 
Originally posted by mcvickj
OK I'll bite. What is the SNR? You have the HSN, LSN, and ISS. Whats left?
Click to expand...
It's HPI's Super Nitro Rally, you can have a 280 mm wheelbase or switch it to a 300mm wheelbase. It's tonnes of fun, can't really take much bashing but still fun to rip around on 'cause it can handle most terrain.:banana:
 
Yeah, once you find a good setting for your needles, why would you want to touch it again? I mean, I realize you'll have to adjust it depending on the weather conditions, but you would only adjust it at a minimum. 1/4 turn here, maybe 1/2???? Why would you always want to go back to factory settings? Too much work if you ask me.
 
I *think* group 2 wants to know where the sweet spot is. So after they tune, they crank the needles in and count the number of turns. Why do this? Because everyday that you run your nitro will probably have different weather, temp, humidity, etc. I would guess that group 2 are the really advanced nitro people. Everyday they put the carb back in the sweet stop and adjust here and there for the current conditions. Then the next day the weather has changed so they put it back where they started and make the small adjustments yet again.

It's a good idea, but I'm in group 1. Once I get my carb tuned I don't want to mess with it.

-Rob
 
Group 1 is on the right track, although seeing that weather changes daily, the last good tune, is where you should start.
 

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