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Change Gets - Don't change Jets That is the Question
Posted: Thu May 23, 2013 10:18 am
by Tailspin
I already have my Answer but want to get the general idea of what people think.
Do i change the Jets on my Trike or Don't I
Take a look at the Pic and vote.
Re: Change Gets - Don't change Jets That is the Question
Posted: Fri May 24, 2013 7:12 am
by weedy
A ball hair rich but that's better than to lean.
Re: Change Gets - Don't change Jets That is the Question
Posted: Fri May 24, 2013 5:23 pm
by Bundy
I didnt "vote" because I dont know...
When the results are finalised would you post your reasoning Gav? For the less mechanically minded folks like me...
Re: Change Gets - Don't change Jets That is the Question
Posted: Sun May 26, 2013 9:38 am
by Loco
Bundy wrote:I didnt "vote" because I dont know...
When the results are finalised would you post your reasoning Gav? For the less mechanically minded folks like me...
Same here...
Re: Change Gets - Don't change Jets That is the Question
Posted: Mon May 27, 2013 9:07 am
by Tailspin
Actually Guys the Plugs are burning Damn near perfect. Like weedy said, Ball hair rich but Perfect.
I just wanted some feedback cos like you guys the people out there have no Idea and well it is better to learn from somebody else's mistakes than to do it all by yourself.
I have some idea's i want to bounce off a couple of guys. Will chat to a local AP fellow and see if i can come up with something.
Re: Change Gets - Don't change Jets That is the Question
Posted: Mon May 27, 2013 10:16 am
by klein
Tailspin wrote:Actually Guys the Plugs are burning Damn near perfect. Like weedy said, Ball hair rich but Perfect.
I just wanted some feedback cos like you guys the people out there have no Idea and well it is better to learn from somebody else's mistakes than to do it all by yourself.
I have some idea's i want to bounce off a couple of guys. Will chat to a local AP fellow and see if i can come up with something.
Great Info....Thanks !! keep it coming
Re: Change Gets - Don't change Jets That is the Question
Posted: Thu May 30, 2013 4:54 pm
by Keep them level
Great info. now know what to look for.
would it be correct if I said:
too rich = darker colour - basically a "waste" of unburnt full - I use the word "waste" loosely.
vs
too lean = whiter colour : on route to burn valves
Re: Change Gets - Don't change Jets That is the Question
Posted: Fri May 31, 2013 11:29 am
by Tailspin
Re: Change Gets - Don't change Jets That is the Question
Posted: Fri May 31, 2013 10:55 pm
by Duck Rogers
Keep them level wrote:.....too lean = whiter colour : on route to burn valves
Except there's no valves to burn on our 2 strokes.....more like overheating and a hole in the piston...
Re: Change Gets - Don't change Jets That is the Question
Posted: Tue Jun 04, 2013 12:05 pm
by braam hechter
Good Day Gents.
You do touch some interesting aspects. We had some meetings with some of the major fuel suppliers. With all the current additives, including the two stroke oil that is being mixed in, the change to unleaded fuel, the different octane ratings etc, it is nearly impossible to state that the mixture is correct, too lean or too rich, based on the color of the spark plugs. It would seem that plugs on average burns darker with the usage of unleaded fuel. (Take a look and see what your car's exhaust pipe look like.)
It is suggested that the manufacturers recommendations being followed. I know that the Rotax manual has an interesting graph making provision for altitude etc. This gives you the suggested needle and jetting information.
Greetings
Braam Hechter
Re: Change Gets - Don't change Jets That is the Question
Posted: Tue Jun 04, 2013 6:16 pm
by leprechaun
I prefer to run a 503 DCDI on 155 main jets instead of the recogmended 150 , reason being hole in the piston , slightly more lubrication , less heat , with 155 jets the exhaust will still burn white with unleaded petrol , if it is darker clean them airfilters , remember enrich the talliban by replacing jet needles and needle jets every 200 hours , Leprechaun
